Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-11-18T12:55:36Z No. of bitstreams: 2 gustavo_henrique_campos_souza.pdf: 742717 bytes, checksum: ef326795d986831c7d96eea8901db2ce (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-11-18T12:56:03Z (GMT) No. of bitstreams: 2 gustavo_henrique_campos_souza.pdf: 742717 bytes, checksum: ef326795d986831c7d96eea8901db2ce (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) / Made available in DSpace on 2015-11-18T12:56:03Z (GMT). No. of bitstreams: 2 gustavo_henrique_campos_souza.pdf: 742717 bytes, checksum: ef326795d986831c7d96eea8901db2ce (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) Previous issue date: 2011 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / O presente trabalho foi realizado em Couto de Magalh?es de Minas- MG no m?s de Maio, com o objetivo de avaliar diferentes n?veis de inclus?o de ractopamina na dieta para su?nos em termina??o. Foram utilizados 32 su?nos h?bridos comerciais com o peso inicial de 88,0 ? 4,0 kg e peso final de 109,0 ? 5,0 kg. Os animais foram distribu?dos em delineamento inteiramente casualizado, composto por quatro tratamentos (4, 8, 12 e 16 ppm de ractopamina) e quatro repeti??es. A unidade experimental constitu?da por dois animais, um macho e uma f?mea na baia, sendo que nas dietas experimentais houve um aumento de 30% de lisina digest?vel. As an?lises estat?sticas das vari?veis de desempenho (consumo de ra??o, ganho de peso e convers?o alimentar), das caracter?sticas quantitativas de carca?a (profundidade de lombo, espessura de toucinho, porcentagem de carne magra e deposi??o de carne magra di?ria) e dos par?metros fisiol?gicos (temperatura de superf?cie, frequ?ncia respirat?ria e temperatura retal) foram determinadas por an?lises de regress?o. O per?odo experimental teve dura??o de 14 dias. A temperatura m?dia do ar obtida foi de 23,7 ? 0,5?C, a umidade relativa foi de 69,6 ? 5,2% e o ?ndice de Temperatura de Globo e Umidade (ITGU) foi calculado em 71,1 ? 1,3. Os n?veis de ractopamina n?o influenciaram o ganho de peso, entretanto, foi observado efeito quadr?tico sobre o consumo de ra??o e a convers?o alimentar dos su?nos, de acordo com o aumento do n?vel de ractopamina na dieta, que melhorou at? o n?vel estimado de 11 e 13,2 ppm respectivamente. Os n?veis de ractopamina n?o influenciaram a espessura de toucinho, profundidade de lombo e porcentagem de carne magra, medidas por ultra-som. Observou-se efeito quadr?tico na deposi??o de carne magra di?ria dos su?nos com o aumento do n?vel de ractopamina na dieta, que melhorou at? o n?vel estimado de 11,4 ppm. Os n?veis de ractopamina n?o influenciaram a frequ?ncia respirat?ria dos su?nos. Notou-se que os n?veis crescentes de ractopamina nas dietas, promoveram aumento linear na temperatura retal e temperatura superficial. Concluiu-se que a suplementa??o de 13,2 e 11,4 ppm de ractopamina em dietas para su?nos em termina??o, durante 14 dias pr?-abate, proporcionam melhores resultados de convers?o alimentar e deposi??o de carne magra di?ria. No entanto, com o aumento dos n?veis de ractopamina, foi observada moderadas altera??es fisiol?gicas, n?o afetando o desempenho dos animais. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Zootecnia, Universidade Federal dos Vales do Jequitinhonha e Mucuri, [2011]. / ABSTRACT This work was performed in Couto de Magalh?es de Minas Gerais in the month of May, with the objective of evaluate different levels of inclusion of ractopamine in diet for finishing pigs. We used 32 commercial hybrid pigs with initial body weight of 88.0 ? 4.0 kg and final weight de109 ? 5.0 kg. The animals distributed in a completely randomized design, with four treatments (4, 8, 12 and 16 ppm ractopamine) and four replications. The experimental unit consists of two animals, one male and one female in the bay, and the experimental diets was an increase of 30% of lysine digestible. The statistical analysis of the performance variables (feed intake, weight gain and feed conversion), quantitative characteristics of the carcass (loin depth, backfat thickness, lean percentage and lean meat gain per day) and the physiological parameters (surface temperature, respiratory rate and rectal temperature) were determined by regression analysis. The experimental period lasted 14 days. The average temperature recorded was 23,7 ? 0,5?C, relative humidity was 69,6 ? 5,2% and BGHI was calculated at 71,1 ? 1,3. The levels of ractopamine did not affect weight gain, however, was observed quadratic effect on feed intake and feed conversion of pigs, according to the increased level of ractopamine in diet, which improved up to the level of 11 and 13,2 ppm respectively. The levels of ractopamine did not affect backfat thickness, loin depth and lean percentage, measured by ultrasound. There was a quadratic effect on daily lean meat gain of pigs with increased levels of ractopamine in the diet, which increased up to the estimated level of 11.4 ppm. The levels of ractopamine did not affect the respiratory rate of pigs. It was observed that increasing levels of ractopamine in diets, a linear increase in rectal temperature and surface temperature. We conclude that the supplementation of 13.2 and 11.4 ppm of ractopamine in diets for finishing pigs during 14 days pre-slaughter, showed the best feed conversion and daily lean meat gain. However, with increasing levels of ractopamine, there is moderate physiological alterations, not affecting the performance of animals.

Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2014-12-24T12:55:23Z No. of bitstreams: 2 felipe_santos_dalolio.pdf: 505298 bytes, checksum: 3f8523ffd1b6b2eef9de24a1fddc10db (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2014-12-24T12:55:48Z (GMT) No. of bitstreams: 2 felipe_santos_dalolio.pdf: 505298 bytes, checksum: 3f8523ffd1b6b2eef9de24a1fddc10db (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2014-12-24T12:56:07Z (GMT) No. of bitstreams: 2 felipe_santos_dalolio.pdf: 505298 bytes, checksum: 3f8523ffd1b6b2eef9de24a1fddc10db (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) / Made available in DSpace on 2014-12-24T12:56:07Z (GMT). No. of bitstreams: 2 felipe_santos_dalolio.pdf: 505298 bytes, checksum: 3f8523ffd1b6b2eef9de24a1fddc10db (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) Previous issue date: 2014 / Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico (CNPq) / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / Funda??o de Amparo ? Pesquisa do estado de Minas Gerais (FAPEMIG) / A inclus?o de enzimas em dietas ? base de milho e farelo de soja pode melhorar o desempenho produtivo dos frangos de corte. O experimento foi conduzido com o objetivo de avaliar o efeito da inclus?o de diferentes n?veis de um complexo enzim?tico composto por fitase, protease, xilanase, ? ? glucanase, celulase, amilase e pectinase, em dietas ? base de milho e farelo de soja, sobre os par?metros de desempenho, rendimento de carca?a e partes e qualidade da carne de frangos de corte. Foram utilizadas 600 aves, de um dia de idade, f?meas, da linhagem Cobb 500, distribu?das segundo um delineamento inteiramente casualizado, com cinco n?veis de inclus?o de complexo enzim?tico (0.000; 0.100; 0.200; 0.300 e 0.400 kg/ton), e seis repeti??es de 20 aves cada. Foram avaliados, em cada fase (1-21, 1-35, 1-42), o ganho de peso, a convers?o alimentar e o consumo de ra??o. O rendimento de carca?a e partes foi avaliado aos 35 e 42 dias de idade e a qualidade da carne foi avaliada nos mesmos per?odos, sobre as caracter?sticas de perda de peso por cozimento (PPC), maciez objetiva (MO), capacidade de reten??o de ?gua (CRA), pH, luminosidade (L*) e cor (a* e b*). N?o foi observado efeito significativo (P?0,05) para os par?metros de desempenho aos 21, 35 e 42 dias de idade. N?o foi observado efeito significativo (P?0,05) para rendimento de carca?a e cortes e para a qualidade de carne aos 35 e 42 dias de idade. A inclus?o de diferentes n?veis de complexo enzim?tico SSF n?o afeta o desempenho, rendimento de carca?a e partes e a qualidade da carne dos frangos de corte. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Zootecnia, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2014. / ABSTRACT The inclusion of enzymes in diets based on corn and soybean meal can improve the productive performance of broiler chickens. The experiment was conducted to evaluate the effect of the inclusion of different levels of an enzyme complex consisting of phytase, protease, xylanase, ? - glucanase, cellulase, amylase and pectinase in diets based on corn and soybean meal on performance parameters, carcass yield and parts and meat quality of broilers chickens. There were used 600 birds, one-day-old, females, from the Cobb 500 strain, distributed in a completely randomized design with five inclusion levels of the enzyme complex (0.000, 0.100, 0.200, 0.300 and 0.400 kg/ton) and six replicates of 20 birds each. At each stage (1-21, 1-35, 1-42) were evaluated weight gain, feed conversion and feed intake. The yield of carcass and parties was evaluated at 35 and 42 days of age and quality of the meat was evaluated in the same periods on the characteristics of weight loss by cooking (PPC), objective tenderness (MO), retention capacity water (CRA), pH, lightness (L *) and color (a * and b *). No significant effect (P ? 0.05) was observed for the performance parameters of 21, 35 and 42 days of age. No significant effect (P ? 0.05) was observed for carcass yield and cuts and meat quality at 35 and 42 days of age. The inclusion of different levels of the enzyme complex SSF does not affect performance, yield of carcass and parts and the meat quality of broiler chickens.

Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-01-13T11:29:26Z No. of bitstreams: 2 felipe_sousa_moreira.pdf: 747902 bytes, checksum: c48aace073efb527178a79a337f76a81 (MD5) license_rdf: 22974 bytes, checksum: 99c771d9f0b9c46790009b9874d49253 (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-01-13T11:31:15Z (GMT) No. of bitstreams: 2 felipe_sousa_moreira.pdf: 747902 bytes, checksum: c48aace073efb527178a79a337f76a81 (MD5) license_rdf: 22974 bytes, checksum: 99c771d9f0b9c46790009b9874d49253 (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-01-13T11:31:47Z (GMT) No. of bitstreams: 2 felipe_sousa_moreira.pdf: 747902 bytes, checksum: c48aace073efb527178a79a337f76a81 (MD5) license_rdf: 22974 bytes, checksum: 99c771d9f0b9c46790009b9874d49253 (MD5) / Made available in DSpace on 2015-01-13T11:31:47Z (GMT). No. of bitstreams: 2 felipe_sousa_moreira.pdf: 747902 bytes, checksum: c48aace073efb527178a79a337f76a81 (MD5) license_rdf: 22974 bytes, checksum: 99c771d9f0b9c46790009b9874d49253 (MD5) Previous issue date: 2013 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / Avaliaram-se as caracter?sticas de desempenho de 48 bovinos inteiros dos grupos gen?ticos Guzer?, F1Guzer? x Holand?s (Guzolando), F1 Guzer? x Nelore (Guzonel) e F1 ? Simental + ? Guzer? + ? Nelore (Tricross) com idade m?dia de vinte meses e peso corporal m?dio de 386,45 ? 9,7 kg; 395,25 ? 14,2 kg; 435,07 ? 20,5 kg e 461,59 ? 11,7 kg, respectivamente. Os animais foram confinados por 83 dias, com dieta a base de silagem de sorgo e o concentrado (50: 50). O delineamento experimental utilizado foi inteiramente casualizado. Os animais Guzolando apresentaram ganho de peso di?rio semelhante ao dos grupos Tricross e Guzer? e superior aos animais Guzonel. Os animais Guzonel apresentaram menores ganhos de peso total, por?m n?o houve diferen?a na efici?ncia alimentar e convers?o alimentar entre os grupos. O consumo de mat?ria seca foi menor para o grupo Guzer? e igual entre os demais grupamentos; o consumo de mat?ria seca em rela??o ao peso corporal foi menor no grupo Tricross. Para as caracter?sticas de carca?a, foram abatidos dezoito animais, sendo seis Guzolando, seis Guzonel e seis Tricross. O grupo Tricross apresentou melhor efici?ncia biol?gica (EB) e maior ganho de peso de carca?a do que os demais grupos gen?ticos. O rendimento de carca?as quente e fria foi menor para o grupo Guzolando e semelhante entre os grupos Tricross e Guzonel. N?o houve diferen?a entre os grupos para as perdas por resfriamento e propor??o do traseiro. O grupo Tricross apresentou maiores rendimentos de costela e contrafil? e menores para o de fil? mignon que os demais grupos. O grupo Guzonel foi superior para os rendimentos de alcatra completa e alcatra. Houve semelhan?a entre os grupos para os rendimentos dos cortes fraldinha, cox?o, maminha, lagarto e picanha. Para os componentes n?o integrantes da carca?a, o grupo Guzonel apresentou maior rendimento de couro; o Guzolando, maior rendimento de f?gado e o Tricross, menor rendimento de patas. N?o houve diferen?a no rendimento de cabe?a, l?ngua, pulm?o e traqu?ia, ba?o, cora??o e rabo entre os grupos gen?ticos. Para qualidade da carne, a an?lise das vari?veis foi feita em amostras do Long?ssimus dorsi retirados entre a 12a e a 13a costela de cada animal. Os animais Tricross apresentaram maior ?rea de olho-de-lombo e profundidade do que os demais cruzamentos, n?o havendo diferen?a no comprimento entre os grupos gen?ticos e na espessura de gordura subcut?nea. A for?a de cisalhamento foi maior para os animais Guzonel comparada aos Guzolando, entretanto foi semelhante aos animais Tricross. Os valores para pH, capacidade de reten??o de ?gua e caracter?sticas de colora??o da carne foram semelhantes entre os grupos gen?ticos. Os animais do grupo Tricross foram mais eficientes em direcionar alimentos em carca?a. Os grupos foram equivalentes em produzir cortes c?rneos de valor comercial e nos componentes n?o-integrantes de carca?a, por?m os animais Guzolando apresentaram a carne mais macia. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Zootecnia, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2013. / ABSTRACT The aim of this study was to evaluate the performance characteristics of cattle of 48 genetic groups Guzerat (GZ), F1 Guzerat x Holstein (GH), F1 Guzerat x Nellore (GN) and F1 ? Simmental + ? Guzerat + ? Nellore (SG) with average age of twenty months and weight body average 386.45 ? 9.7 kg, 395.25 ? 14.2 kg, 435.07 ? 20.5 kg and 461.59 ? 11.7 kg, respectively. The animals were confined for 83 days and its diets were composed of sorghum silage and concentrate (50:50). The analysis was performed by a completely randomized design. The GH group showed an average daily weight gain similar to SG and GZ groups and higher than GN group. GN group gained less total weight, but there was no difference in feed efficiency and feed conversion among the groups. The dry matter intake was lower for the GN group and similar among the other groups; the dry matter intake relative to body weight was lower for SG group. For carcass traits were slaughtered eighteen animals: six GH, six GN and six SG group. The SG group showed better biological efficiency and higher carcass weight gain than the other genetic groups. The hot and cold carcass yields were lower for the GH group and were similar between SG and GN groups. There was no difference among groups for cooling losses and hindquarter yield. The SG group had higher rib and striploin yields and lower tenderloin yield than the other groups. The GN group was superior to full rump and rump yields. There were similar among groups for skirt steak, rump roast, titty, eye round and steak yield. For the non-integrate body components of the carcass, the GN group showed the highest rawhide yield, the GH highest liver yield and SG lower feets yield. There was no difference in the head, tongue, lung and trachea, spleen, heart and tail yields among genetic groups. For meat quality, analysis of variables was performed on samples taken from the Longissimus dorsi between the 12th and 13th rib of each bull. The SG group had higher loin eye area than the other groups, but the subcutaneous fat thickness was similar among the genetic groups. The shear force was higher to GN group compared GH group, however was similar to SG group. The values for pH, water holding capacity and staining characteristics of meat were similar among the genetic groups. The SG group was more efficient in directing food into carcass, however the groups were equivalent in producing commercial value higher meat`s cuts and non-integrate body components of carcass. The GH group showed higher tenderness of meat.

Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-11-18T16:55:54Z No. of bitstreams: 2 janaina_adna_barbosa_sena.pdf: 803348 bytes, checksum: 7fcbe004c490cd56b913efb2969519b6 (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-11-18T16:56:20Z (GMT) No. of bitstreams: 2 janaina_adna_barbosa_sena.pdf: 803348 bytes, checksum: 7fcbe004c490cd56b913efb2969519b6 (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) / Made available in DSpace on 2015-11-18T16:56:20Z (GMT). No. of bitstreams: 2 janaina_adna_barbosa_sena.pdf: 803348 bytes, checksum: 7fcbe004c490cd56b913efb2969519b6 (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) Previous issue date: 2011-09-26 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / Funda??o de Amparo ? Pesquisa do Estado de Minas Gerais (FAPEMIG) / O experimento foi conduzido no Campus Experimental Moura, no Laborat?rio de Ruminantes do Departamento de Zootecnia da Universidade Federal dos Vales do Jequitinhonha e Mucuri ? Curvelo, MG. Foram utilizados para o ensaio de digestibilidade 12 ovinos, machos mesti?os Santa In?s, alimentados com quatro dietas totais, com diferentes n?veis de substitui??o do feno de Tifton 85 pelo res?duo de maracuj?: 0% (controle); 20%; 40% e 60% de substitui??o. Avaliou-se o consumo e fez-se coleta total de fezes e urina, com devidas amostragens para posteriores an?lises. O delineamento utilizado foi o DIC, com peso inicial como covari?vel. O consumo de nutrientes n?o foi influenciado pelos n?veis de substitui??o. ? exce??o da FDN, n?o houve diferen?a significativa para a digestibilidade aparente dos nutrientes, bem como para o balan?o de nitrog?nio. Para o ensaio de desempenho foram utilizados 20 animais, machos mesti?os Santa In?s, confinados. Os mesmos tratamentos foram testados. Ra??es fornecidas e sobras foram amostradas para an?lises. Pesagens foram realizadas semanalmente para avaliar o ganho de peso. Ao final de 63 dias de confinamento avaliou-se as medidas biom?tricas e os animais foram abatidos. Avaliou-se ent?o, pesos e rendimentos de carca?a, e os componentes n?o-carca?a. O delineamento utilizado foi blocos casualizados, sendo as m?dias submetidas ? an?lise de regress?o pelo PROC GLM do programa estat?stico SAS (SAS, 2002). Os consumos de MS e PB foram influenciados pelos tratamentos, com superioridade para o n?vel de 40% de substitui??o; assim como os ganhos em peso. Para os rendimentos de carca?a os melhores resultados foram registrados para 60% de substitui??o. Para a an?lise de cortes e medidas biom?tricas apenas a paleta e a circunfer?ncia de t?rax diferiram, assim como r?men/ret?culo, omaso e intestino delgado para os componentes n?o-carca?a. Recomenda-se a substitui??o do feno pelo res?duo de maracuj? quando houver redu??o no custo da dieta. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Zootecnia, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2011. / ABSTRACT The experiment was conducted at Moura?s Experimental Campus, in the Laboratory of Ruminants, Department of Animal Science, University of the Jequitinhonha and Mucuri, in the town of Curvelo, Minas Gerais state, Brazil. There had been used for the digestibility trial 12 sheep, Santa Inez crossbred males fed with four diets in total, with different levels of substitution of Tifton 85 hay by the residue of passion fruit: 0% (control), 20%, 40% and 60% replacements. Consumption was evaluated and there was a total collection of feces and urine, with appropriate samples for further analysis. The experimental design was randomized with initial weight as covariate. The nutrient intake was not influenced by levels of substitution. With the exception of the NDF, there was no significant difference in the apparent digestibility of nutrients, or with nitrogen balance. For the performance test were used 20 confined animals, male crossbred Santa In?s. The same treatments were tested. Rations were supplied and sampled for analysis. Weight measurements were performed weekly to assess weight gain. At the end of 63 days of confinement was evaluated biometric measurements and the animals were slaughtered. Therefore, there have been analyzed, weights and carcass, and non-housing components. The experimental design was randomized blocks, and the means subjected to regression analysis using PROC GLM of SAS statistical software (SAS, 2002). The intake of DM and CP were influenced by treatments with high values to the level of 40% substitution, as well as gains in weight. For carcass yield the best results were recorded for 60% substitution. For analysis of cuts and biometric measures only the palette and chest circumference differed, as well as rumen/reticulum, omasum and small intestine for non-housing components. It is recommended to replace the hay residue of passion when there is a reduction in the cost of the diet

Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-10-26T11:43:04Z No. of bitstreams: 2 Adriana_Paiva_Paula_Pinto.pdf: 808282 bytes, checksum: cbd4f16f675570942d78c7eb503d2425 (MD5) license_rdf: 22974 bytes, checksum: 99c771d9f0b9c46790009b9874d49253 (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-10-26T11:43:40Z (GMT) No. of bitstreams: 2 Adriana_Paiva_Paula_Pinto.pdf: 808282 bytes, checksum: cbd4f16f675570942d78c7eb503d2425 (MD5) license_rdf: 22974 bytes, checksum: 99c771d9f0b9c46790009b9874d49253 (MD5) / Made available in DSpace on 2015-10-26T11:43:40Z (GMT). No. of bitstreams: 2 Adriana_Paiva_Paula_Pinto.pdf: 808282 bytes, checksum: cbd4f16f675570942d78c7eb503d2425 (MD5) license_rdf: 22974 bytes, checksum: 99c771d9f0b9c46790009b9874d49253 (MD5) Previous issue date: 2010 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / Funda??o de Amparo ? Pesquisa do estado de Minas Gerais (FAPEMIG) / O experimento foi conduzido na Universidade Federal de Lavras, objetivando-se determinar a influ?ncia de dietas com inclus?o de gordura protegida e vitamina E sobre o desempenho, rendimentos, caracter?sticas de carca?a e de qualidade de carne de cordeiros confinados com diferentes pesos. Utilizaram-se 32 cordeiros Santa In?s n?o-castrados recebendo dietas com propor??o de 40% de volumoso e 60% de concentrado, ? vontade, com presen?a ou aus?ncia de gordura protegida e/ou vitamina E, totalizando 4 dietas. Foram considerados ainda dois pesos de in?cio de confinamento: entre 20 e 25 kg; e entre 30 e 35 kg.Todos os animais foram abatidos com 84 dias de confinamento. Os animais alimentados com dietas sem adi??o de gordura protegida, independente do uso de vitamina E, apresentaram os maiores consumos de mat?ria seca, prote?na bruta, fibra em detergente neutro e cinza, e os menores consumos de extrato et?reo. Os ganhos de peso total e di?rio n?o foram influenciados pelas vari?veis avaliadas. A convers?o alimentar foi melhor nos animais confinados em pesos mais leves recebendo dietas sem gordura protegida. Os cordeiros confinados mais pesados alimentados com dietas com vitamina E apresentaram maiores pesos de carca?a fria. Os maiores rendimentos de carca?a quente foram para os animais confinados mais leves recebendo dietas com vitamina E, e para os mais pesados alimentados com dietas contendo gordura protegida e vitamina E, esses tamb?m apresentaram os maiores rendimentos de carca?a fria. As medidas objetivas realizadas na carca?a fria apresentaram as maiores m?dias para os cordeiros confinados mais pesados. Os cordeiros confinados de 20-25 kg apresentaram as maiores percentagens de trato gastrintestinal. Os cordeiros mais pesados recebendo dietas com gordura protegida tiveram as maiores percentagens de dep?sitos de gordura. As maiores m?dias para o rendimento do lombo foram dos cordeiros de 30-35 kg que consumiram dietas sem gordura. Os par?metros f?sicos de qualidade da carne no Longissimus dorsi n?o foram influenciados por nenhuma das vari?veis avaliadas, entretanto para o fil? mignon houve diferen?a. A adi??o de gordura protegida na dieta reduz o consumo de mat?ria seca, aumenta o consumo de extrato et?reo, e n?o apresenta resultados relevantes quanto ?s caracter?sticas da carca?a e qualidade de carne. Apesar da inclus?o de vitamina n?o ter efeito expressivos sobre os fatores avaliados, ela protege as carca?as das perdas durante o resfriamento. O confinamento de cordeiros com diferentes pesos n?o apresenta vantagens quanto ?s caracter?sticas estudadas, exceto para as medidas de carca?a fria e percentagens do trato gastrintestinal. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Zootecnia, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2010. / ABSTRACT The experiment was conducted at the Universidade Federal de Lavras, aiming to determine the influence of diets with inclusion of protected fat and vitamin E on performance, yield and carcass characteristics of feedlot lambs with different weights. We used 32 uncastrated Santa Ines lambs fed on diets with a ratio of 40% forage and 60% concentrate ad libitum, with presence or absence of protected fat and / or vitamin E, a total of four diets. Were still considered two weights of early containment: between 20 and 25 kg and between 30 and 35 kg. All animals were slaughtered at 84 days of confinement. Animals fed on diets without added fat protected, regardless of the use of vitamin E, had the highest intakes of dry matter, crude protein, neutral detergent fiber and ash, and decreased intake of ether extract. The total weight gains and daily were not influenced by variables. Feed conversion was better for the animals confined in lighter weights fed without protected fat. The heavier feedlot lambs fed on diets with vitamin E showed higher cold carcass. The higher incomes of warm carcass were for the lighter confined animals fed with vitamin E, and for the heavier ones fed with protected fat and vitamin E, they also had the highest yields of cold carcass. Objective measures of the cold carcass had the highest average for the heavier feedlot lambs. The feedlot lambs of 20-25 kg showed the highest percentages of the gastrointestinal tract. The heaviest lambs fed on protected fat had the highest percentages of fat deposits. The largest average yield of loin were lambs of 30-35 kg fed on diets without fat. The physical parameters of meat quality in Longissimus dorsi were not affected by any variable evaluated, however for the filet mignon there was a difference. The addition of fat in the diet reduces the dry matter intake, increases consumption of fat, and does not present significant results concerning the characteristics of carcass and meat quality. Despite the inclusion of vitamin have no significant effect on the evaluated factors, it protects the carcasses of the losses during cooling. Confinement of lambs with different weights have no advantages for the studied traits, except for measures of cold carcass.

Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-12-17T16:19:18Z No. of bitstreams: 2 mariana_almeida_dumont.pdf: 710594 bytes, checksum: da03f9fb44e9700ddeb23cb6ebdc8d80 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-12-17T16:19:44Z (GMT) No. of bitstreams: 2 mariana_almeida_dumont.pdf: 710594 bytes, checksum: da03f9fb44e9700ddeb23cb6ebdc8d80 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) / Made available in DSpace on 2015-12-17T16:19:44Z (GMT). No. of bitstreams: 2 mariana_almeida_dumont.pdf: 710594 bytes, checksum: da03f9fb44e9700ddeb23cb6ebdc8d80 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Previous issue date: 2012 / Funda??o de Amparo ? Pesquisa do estado de Minas Gerais (FAPEMIG) / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico (CNPq) / Objetivou-se avaliar diferentes n?veis de prote?na bruta para codornas de corte nos per?odos de 1-14, 14-28 e 28-42 dias de idade. O delineamento experimental foi inteiramente casualizado, constitu?do de cinco tratamentos e cinco repeti??es. Para a primeira fase, as ra??es experimentais foram formuladas com 26%, 28%, 30%, 32% e 34% PB, para a segunda fase, foram formuladas com 22%, 24%, 26%, 28% e 30% PB e para a terceira, com 19%, 21%, 23%, 25% e 27% PB. Para o per?odo de 1 a 14 dias de idade, os n?veis de prote?na bruta estudados n?o influenciaram o ganho de peso e a convers?o alimentar das aves, por?m, o n?vel de 26% PB apresentou menor consumo. Os n?veis de prote?na bruta utilizados no per?odo de 14 aos 28 dias de idade influenciaram o consumo de ra??o, ganho de peso e convers?o alimentar das codornas de corte, com o n?vel de 22% PB apresentando melhor ganho de peso e melhor convers?o alimentar. Para a fase de crescimento (28 a 42 dias) das codornas de corte, as caracter?sticas de desempenho apresentaram efeito significativo em rela??o aos n?veis de prote?na bruta estudados, com melhores resultados de ganho de peso e convers?o alimentar observados em codornas alimentadas com 23% PB. A exig?ncia de prote?na bruta recomendada ? de 26%, 22% e 23% PB para as fases de 1 a 14 dias, 14 a 28 dias e 28 a 42 dias de idade, respectivamente. Por?m, para melhor rendimento de carca?a e rendimento de carne de peito, aos 42 dias de idade das codornas, o n?vel de prote?na bruta da terceira fase poder? ser reduzido para 19% de PB. Em rela??o ? qualidade da carne de peito, houve efeito significativo (P<0,05) dos n?veis de prote?na para as caracter?sticas pH, maciez objetiva, perda de ?gua por cozimento e tend?ncia ao vermelho. O n?vel que apresentou melhor resultado para essas caracter?sticas foi o de 19% PB. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Zootecnia, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2012. / ABSTRACT The objective was to evaluate different levels of crude protein for meat quails at 1-14, 14-28 and 28-42 days of age. The experiment was arranged in a completely randomized design, consisting of five treatments and five repetitions. For the first stage, the experimental diets were formulated with 26, 28, 30, 32 and 34% CP; for the second one, they were formulated with 22, 24, 26, 28 and 30% CP and for the third with 19, 21, 23, 25 and 27% CP. From 1 to 14 days of age, the levels of crude protein did not influence weight gain and feed, however, the level of 26% CP had lower intake. The crude protein levels used from 14 to 28 days of age influenced (P<0.05) feed intake, weight gain and feed of quails, being the best weight gain and feed showed at 22% CP. For the growth stage (28 to 42 days), the performance characteristics had a significant effect compared to the levels of crude protein studied, with better results in weight gain and feed observed in quails fed with 23% CP. The crude protein recommended is 26, 22 and 23% CP for stages 1 to 14 days, 14-28 days and 28-42 days of age, respectively. However, to a better carcass and breast meat yield, the crude protein level at third stage could be reduced to 19% CP at 42 days of quail age. Regarding the quality of breast meat, there was a significant protein levels effect on pH characteristics, objective tenderness, cooking loss and a tendency to red. The level that showed the best result for these characteristics was the 19% CP.

Made available in DSpace on 2016-04-28T14:59:46Z (GMT). No. of bitstreams: 1 2008 - Andre Mantegazza Camargo.pdf: 109997 bytes, checksum: 9f21786351e160d7370d8a4ebed4a890 (MD5) Previous issue date: 2008-07-08 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior / Carcass characteristics of ? Guzer? + ? Nellore (F1) and ? Guzer? + ? Limousin + ? Nellore (F2) were evaluated. Each experimental group was constituted by twelve animals. The bovines presented respective average weights to F1 and F2 of 477,50 ? 18,54 and 468,89 ? 21,03 kg at the beginning of experimental period and 526,83 ? 18,77 kg and 516,08 ? 20,03 kg in the slaughter occasion. The steers were maintained in Panicum maximum cv. Tanz?nia pastures and received feeding, in proportion of 1% live weight, with 22,2% of crude protein and 72,5% of total digestible nutrients (TDN). There was no significant difference (P>0,05) between genetic groups to the majority of body measures, cold carcass, special hindquarter and forequarter weights, special hindquarter percentage, cold carcass and special hindquarter yield, fat thickness, fat thickness adjusted to 100 kg of cold carcass, conformation e the variables that express the carcass physical composition. There was no significant correlation, positive or negative, between carcass measures and economical interesting characteristics. The F1 animals were superior to F2 to side cut weight, percentage and yield. On the other hand, the F2 animal presented higher values to spine-loin length, side cut percentage and yield, loin eye area and loin eye area adjusted to 100 kg of cold carcass when compared to F1 ones. To the correlations, there was significant and positive association between thoracic perimeter (0,62), thoracic depth (0,35), rump length (0,40) and cold carcass weight, as well as there was significant and positive correlations between spine-loin length and loin eye area (0,61) and cushion thickness and special hindquarter yield (0,43). Significant and negative correlation was detected between rump length and muscle yield (-0,43). Considering the experimental condition and the evaluated genetic groups, it is concluded that F2 animals are longer and present right proportions of carcass commercial cuts and measures as loin eye area in relation to the F1. Thoracic perimeter and depth, spine-loin and rump length and cushion thickness are positively associated to the cold carcass weight, loin eye area and muscle and special hindquarter yield. / As caracter?sticas da carca?a de novilhos ? Guzer? x ? Nelore (F1) e ? Guzer? x ? Limousin x ? Nelore (F2) foram avaliadas. Cada grupo experimental era constitu?do por doze animais. Os bovinos apresentaram pesos m?dios respectivos para F1 e F2 de 477, 50 ? 18,54 e 468,89 ? 21,03 kg no in?cio do per?odo experimental e 526,83 ? 18,77 kg e 516,08 ? 20,03 kg na ocasi?o do abate. Os novilhos foram mantidos em pastagens de Panicum maximum cv. Tanz?nia e receberam alimenta??o, na propor??o de 1% do peso vivo, com 22,2% de prote?na bruta e 72,5% de nutrientes digest?veis totais (NDT). N?o houve diferen?a significativa (P>0,05) entre grupos gen?ticos para a maioria das medidas corporais, peso da carca?a resfriada, corte serrote e dianteiro, percentagem do corte serrote, rendimento da carca?a resfriada e do corte serrote, espessura de gordura de cobertura, espessura de gordura de cobertura ajustada para 100 kg de carca?a resfriada, conforma??o e as vari?veis que expressam a composi??o f?sica da carca?a. N?o houve correla??o significativa, positiva ou negativa, entre medidas obtidas na carca?a e caracter?sticas de interesse econ?mico. Os animais F1 foram superiores aos F2 para peso, percentagem e rendimento do corte costilhar. Por outro lado, os animais F2 apresentaram valores mais elevados de comprimento dorso-lombo, percentagem e rendimento do corte dianteiro, ?rea de olho de lombo e ?rea de olho de lombo ajustada para 100 kg de carca?a resfriada quando comparados aos F1. Para as correla??es, houve associa??o significativa e positiva entre per?metro tor?cico (0,62), profundidade tor?cica (0,35), comprimento de garupa (0,40) e peso da carca?a resfriada, assim como existiram correla??es positivas e significativas entre comprimento dorso-lombo e ?rea de olho do lombo (0,61) e espessura de cox?o e rendimento do corte serrote (0,43). Correla??o significativa e negativa foi detectada entre o comprimento da garupa e rendimento de m?sculo (-0,43). Considerando as condi??es experimentais e os grupos gen?ticos avaliados, conclui-se que animais F2 s?o mais longil?neos e apresentam propor??es adequadas dos cortes comerciais da carca?a e de medidas como a ?rea de olho do lombo em rela??o aos animais F1. O per?metro e a profundidade tor?cica, o comprimento dorso-lombo e da garupa e a espessura do cox?o s?o positivamente associados ao peso da carca?a resfriada, ?rea de olho do lombo, e rendimentos de m?sculo e do corte serrote.

Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-01-05T16:04:05Z No. of bitstreams: 2 renata_gomes_oliveira.pdf: 686590 bytes, checksum: 0f17761923025eae7337021352f6c0bd (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-01-05T16:04:40Z (GMT) No. of bitstreams: 2 renata_gomes_oliveira.pdf: 686590 bytes, checksum: 0f17761923025eae7337021352f6c0bd (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-01-05T16:04:58Z (GMT) No. of bitstreams: 2 renata_gomes_oliveira.pdf: 686590 bytes, checksum: 0f17761923025eae7337021352f6c0bd (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) / Made available in DSpace on 2015-01-05T16:04:58Z (GMT). No. of bitstreams: 2 renata_gomes_oliveira.pdf: 686590 bytes, checksum: 0f17761923025eae7337021352f6c0bd (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) Previous issue date: 2013 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / Funda??o de Amparo ? Pesquisa do estado de Minas Gerais (FAPEMIG) / Foram conduzidos quatro experimentos para avaliar n?veis de lisina digest?vel para frangos de corte tipo caipira, linhagem Colonial, machos e f?meas, criados em semiconfinamento durante as fases: inicial (1 a 21 dias), crescimento I (22 a 42 dias), crescimento II (43 a 56 dias) e final (57 a 60 dias). As aves foram alojadas em 30 boxes (?rea de abrigo), com acesso ? ?rea de pastejo. Em cada experimento foram utilizados 630 frangos e o delineamento experimental utilizado foi inteiramente casualisado, em esquema fatorial 5x2 (n?veis de lisina x sexo) e tr?s repeti??es de 21 aves cada. Os n?veis de lisina digest?vel avaliados foram: 8,1; 9,5; 10,9; 12,3 e 13,7(g/kg) na fase inicial; 7,07; 8,07; 9,07; 10,7 e 11,07 (g/kg) na fase de crescimento I; 6,07; 7,07; 8,07; 9,07 e 10,07 (g/kg) na fase de crescimento II e 6,0; 7,0; 8,0; 9,0 e 10,0 (g/kg) na fase final. As vari?veis de desempenho avaliadas foram: consumo de ra??o (CR, g/ave), consumo de lisina (CL, g/ave), ganho em peso (GP, g/ave) e convers?o alimentar (CA, g ra??o consumida/ g de ganho em peso). Foram avaliadas as vari?veis de carca?a e de qualidade da carne: rendimento de carca?a, peso da gordura, rendimento e peso dos cortes de peito, de asa+coxinha e de coxa+sobrecoxa, o potencial hidrogeni?nico (pH), a capacidade de reten??o de ?gua (CRA), a perda de peso por cozimento (PPC), a maciez objetiva (MO) cor e luminosidade (L*, a*, b*). Para o per?odo inicial, recomenda-se o n?vel de 12,95 g de lisina/kg, na ra??o de machos e f?meas para melhor CA. Na fase de crescimento I, recomenda-se 9,61 g de lisina/kg na ra??o para minimizar a CA de ambos os sexos, e, para melhor GP, os n?veis de 10,08 e 9,49 g de lisina digest?vel/kg na ra??o de machos e f?meas, respectivamente. Verificou-se que, para a fase de crescimento II, o n?vel de 6,0 g lisina/kg de ra??o atende ?s exig?ncias dos frangos. Para a fase final, observou-se efeito dos n?veis de lisina digest?vel para a CA, sendo recomendados 8,51 g de lisina/kg de ra??o. Para as vari?veis de rendimento de carca?a obteve-se efeito linear crescente de lisina sobre o rendimento de coxa + sobrecoxa das f?meas. A MO da carne de coxa aumentou, linearmente, com os n?veis de lisina, e, para a CRA e L* da carne do peito, observou-se efeito linear decrescente dos n?veis de lisina. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Zootecnia, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2013 / ABSTRACT Four experiments were carried out to determine the digestible lysine requirements for alternative line of broilers, Colonial line, male and female, created in free range system during phases: initial phase (1 to 21 days), growing I (22-42 days), growing II (43-56 days) and last phase (57-60 days). The birds were distributed into 30 pens (shelter area) with access to the pasture. In each trial, 630 birds were used and the experimental design was a completely randomized in a factorial arrangement 5 x 2 (levels of lysine and gender), with three replicates of 21 birds each. The digestible lysine levels evaluated were: 8.1; 9.5; 10.9, 12.3 and 13.7 (g/kg) for initial phase, 7.07, 8.07, 9.07, 10.07 and 11.07 (g/kg) for growing phase I, 6.07, 7.07, 8.07, 9.07 and 10.07 (g/kg) for growing phase II and 6.00, 7.00, 8.00, 9.00 and 10.0 (g/kg) for the last phase. The performance parameters evaluated were: feed intake (FI, g/bird), lysine intake (LI, g/bird), weight gain (WG, g/bird) and feed convertion (FC, g feed intake/ g weight gain). There was evaluated carcass parameters and meat quality: carcass yield, fat weight, yield and weight about the cuts (breast, wing + drumstick, thigh + drumstick), hydrogen potential (pH), water holding capacity (WHC), cooking loss (CL), tenderness, color and brightness (L*, a*, b*). For the initial phase we recommend the level of 12.95 g of lysine/ kg, on the ration for males and females to improve FC. In the growing phase I, we recommend 9.61 g of lysine/kg in the ration to minimize FC for both genders, and to improve WG the levels 10.08 and 9.48 g of digestible lysine/kg on the ration for males and females, respectively. We verified that for growing phase II, the level of 6.0 g of lysine/kg on the ration meets the chicken?s requirements. At last phase, there was digestible lysine effect for FC and can be recommended 8.51 g of lysine/ kg. For yield carcass parameters, there was an increasing linear effect of females? thigh + drumstick. The tenderness increased linearly with lysine levels and for WHC and L* of the meat breast there was a decreasing linear effect of lysine levels.

Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-01-13T11:01:33Z No. of bitstreams: 2 catia_borges_ferreira.pdf: 412834 bytes, checksum: 40122e3e956bdcbc843271a59c4c3b02 (MD5) license_rdf: 22974 bytes, checksum: 99c771d9f0b9c46790009b9874d49253 (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-01-13T11:01:56Z (GMT) No. of bitstreams: 2 catia_borges_ferreira.pdf: 412834 bytes, checksum: 40122e3e956bdcbc843271a59c4c3b02 (MD5) license_rdf: 22974 bytes, checksum: 99c771d9f0b9c46790009b9874d49253 (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-01-13T11:02:12Z (GMT) No. of bitstreams: 2 catia_borges_ferreira.pdf: 412834 bytes, checksum: 40122e3e956bdcbc843271a59c4c3b02 (MD5) license_rdf: 22974 bytes, checksum: 99c771d9f0b9c46790009b9874d49253 (MD5) / Made available in DSpace on 2015-01-13T11:02:12Z (GMT). No. of bitstreams: 2 catia_borges_ferreira.pdf: 412834 bytes, checksum: 40122e3e956bdcbc843271a59c4c3b02 (MD5) license_rdf: 22974 bytes, checksum: 99c771d9f0b9c46790009b9874d49253 (MD5) Previous issue date: 2013 / Funda??o de Amparo ? Pesquisa do estado de Minas Gerais (FAPEMIG) / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico (CNPq) / Objetivou-se, com este trabalho, avaliar a redu??o dos n?veis de prote?na bruta (PB) e a suplementa??o de amino?cidos industriais para frangos de corte, tipo caipira, a fim de determinar suas exig?ncias para este nutriente. Foram realizados quatro ensaios, abrangendo as fases iniciais (um a 21 dias), crescimento I (22 a 42 dias), crescimento II (43 a 56 dias) e final (57 a 70 dias). Em cada ensaio, 630 machos de linhagem Colonial com idade correspondente ? fase de cria??o foram alojadas nas instala??es experimentais constitu?das por 30 boxes e piquetes. Todos os boxes dispunham de ?rea coberta e ?rea de pastejo. O delineamento utilizado foi inteiramente casualisado, com cinco tratamentos e seis repeti??es de 21 aves cada. Os n?veis de redu??o da PB avaliados foram: 21,5; 21,0; 20,5; 20,0 e 19,5% (fase inicial); 19,0; 18,5; 18,0; 17,5 e 17% (fase crescimento I); 17,5; 17,00; 16,5; 16,0 e 15,5% (fase crescimento II); 17,0; 16,5; 16,0; 15,5 e 15,0% (fase final). Foram avaliadas as caracter?sticas de desempenho (ganho em peso, consumo de ra??o e convers?o alimentar), de carca?a (peso e rendimento de carca?a e de cortes nobres) e de qualidade da carne (cor, luminosidade, capacidade de reten??o de ?gua, perda de peso por cozimento e maciez objetiva). Os n?veis de PB para frangos de corte tipo caipira podem ser reduzidos para 19,5% para a fase inicial e 17% para a fase de crescimento I, desde que seja feita a suplementa??o de amino?cidos. Para as fases crescimento II e final n?o s?o necess?rios mais que 15,5 e 15,0% de PB, respectivamente, por n?o acarretar em baixo desempenho e rendimento de carca?a e cortes, desde que seja atendida a rela??o ideal dos amino?cidos essenciais com a lisina digest?vel. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Zootecnia, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2013. / ABSTRACT The objective of this study was to evaluate the reduction of crude protein (CP) and industrial amino acid supplementation for broilers hillbilly type in order to determine their requirements for this nutrient. Four experiments were conducted, covering the initial stages (one to 21 days), growth I (22 to 42 days), growth II (43 to 56 days) and final (57 to 70 days). In each trial, 630 broilers males Colonial lineage corresponding to the phase were housed in experimental facilities consisted of 30 boxes and paddocks. Each box had a covered area and grazing area. The experimental design was completely randomized with five treatments and six replicates of 21 birds each. The reduction levels of CP were: 21.5, 21.0, 20.5, 20.0 and 19.5% (initial phase), 19.0, 18.5, 18.0, 17.5 and 17% (growth phase I), 17.5, 17.0, 16.5, 16.0 and 15.5% (growth phase II), 17.0, 16.5, 16.0, 15.5 and 15.0% (final phase). We evaluated the performance characteristics (weight gain, feed intake and feed conversion), carcass (weight and carcass yield and prime cuts) and meat quality (color, brightness, water holding capacity, loss of weight cooking and objective tenderness). The CP levels for broilers hillbilly type can be reduced to 19.5% for the initial phase and 17% for stage growth I, provided it is done the amino acid supplementation. For growth II and final phases is not need more than 15.5 and 15.0% CP, respectively, for not result in poor performance and carcass yield and cuts, provided it is done in proper supplementation of essential amino acids relative to lysine.

Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-11-17T13:38:09Z No. of bitstreams: 2 eduardo_silva_cordeiro_drumond.pdf: 944408 bytes, checksum: 0673816ae808cf0bd1ee00e74496c7ea (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-11-17T13:38:47Z (GMT) No. of bitstreams: 2 eduardo_silva_cordeiro_drumond.pdf: 944408 bytes, checksum: 0673816ae808cf0bd1ee00e74496c7ea (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) / Made available in DSpace on 2015-11-17T13:38:47Z (GMT). No. of bitstreams: 2 eduardo_silva_cordeiro_drumond.pdf: 944408 bytes, checksum: 0673816ae808cf0bd1ee00e74496c7ea (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) Previous issue date: 2012-08-10 / Funda??o de Amparo ? Pesquisa do estado de Minas Gerais (FAPEMIG) / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico (CNPq) / Objetivou-se com este trabalho avaliar o controle g?nico das caracter?sticas de desempenho, rendimento de carca?a, produ??o e qualidade dos ovos de codornas de corte, por meio da an?lise de um dialelo completo, bem como a indica??o de linhagens e cruzamentos superiores. O experimento foi realizado nas instala??es do Programa de Melhoramento de Codornas da UFVJM no per?odo de dezembro de 2011 a maio de 2012. Foram avaliadas quatro linhagens de codornas de corte em cruzamentos dial?licos, denominadas L1, L2, L3 e L4, sendo proporcionados 16 grupos de prog?nies avaliadas segundo a metodologia de dialelos completos de Griffing. No primeiro experimento, foi avaliado o peso corporal ao nascimento, aos 35 e aos 42 dias de idade; o consumo de dieta e a convers?o alimentar, do nascimento aos 35 e do nascimento aos 42 dias de idade. Houve signific?ncia da capacidade geral de combina??o para todas as caracter?sticas avaliadas, com exce??o do consumo m?dio de dieta, e da convers?o alimentar do nascimento aos 35 dias de idade. Houve efeito significativo da capacidade espec?fica de combina??o, que representa a influ?ncia dos efeitos gen?ticos n?o aditivos, para o peso ao nascimento, convers?o alimentar do nascimento aos 35 e do nascimento aos 42 dias de idade, e o consumo de dieta do nascimento aos 35 dias de idade. O efeito rec?proco apresentou signific?ncia apenas para o peso ao nascimento. Com base na capacidade geral de combina??o as linhagens L1 e L2 foram as mais favor?veis para aumento do peso corporal. Para a convers?o alimentar, pela capacidade espec?fica de combina??o, os cruzamentos L1xL3 e L2xL4 s?o os mais favor?veis, enquanto para o consumo de dieta do nascimento aos 35 dias de idade, os cruzamentos L1xL3 e L2xL3 foram os melhores. No segundo experimento, foram avaliados o peso corporal, o peso e rendimento de carca?a, peito, pernas e asas de machos abatidos aos 42 dias de idade. Foi observada a predomin?ncia de efeitos aditivos na express?o das caracter?sticas, nas quais as linhas L1, L2 e L4 foram recomendadas para as caracter?sticas de peso, sendo o cruzamento L2xL4 recomendado para um maior peso de pernas. No terceiro experimento, foi avaliada a postura do 51? ao 150? dia de idade das aves, dividido em tr?s per?odos (51 a 80; 81 a 110 e 111 a 150 dias de idade), em cada um dos quais foi realizada an?lise para qualidade dos ovos, sendo avaliado o peso do ovo e a unidade Haugh. A variabilidade gen?tica aditiva, expressa pelos quadrados m?dios da capacidade geral de combina??o foi significativa para peso do ovo em todos os per?odos avaliados, da mesma forma a unidade Haugh, com exce??o do per?odo de 51 a 80 dias de idade. Assim a escolha de progenitores geneticamente superiores dentro das linhas puras ? vi?vel. A capacidade espec?fica de combina??o foi significativa apenas para unidade Haugh com exce??o do segundo per?odo, permitindo a identifica??o de combina??es h?bridas superiores para esta caracter?stica. Visando maior produ??o de ovos os cruzamentos da L3 resultam em ganhos satisfat?rios, enquanto para peso do ovo as linhagens L1 e L4 podem aumentar esta caracter?stica, j? para unidade Haugh o cruzamento L2xL3 ? o mais indicado. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Zootecnia, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2012. / ABSTRACT The objective of this study was to evaluate the gene control of the performance traits, carcass yield, egg`s production and quality of meat quails through the analysis of a complete diallel, as well as indicating superior strains and crosses. The experiment was conducted on the premises of the Genetic Improvement Program for Quails of UFVJM, from December 2011 to May 2012. Four strains of meat quails in diallel crosses were evaluated, named L1, L2, L3 and L4, which provided 16 groups of progenies according to the method of Griffing's complete diallel. In the first experiment, there have been determined body weight at hatch, at 35 and at 42 days of age, feed intake and feed conversion, from hatch to 35 days old and from hatch to 42 days old. The combining ability analysis revealed significance for general combining ability for all traits, except for average feed intake and feed from hatch to 35 days old. There was significant effect of specific combining ability, what shows the influence of non-additive genetic effects for hatch weight, feed efficiency from hatch to 35 days of age and from hatch to 42 days of age and feed intake from hatch to 35 days of age. The reciprocal effect showed significance only for hatch weight. Based on the general ability of the lines for combining, L1 and L2 showed to be the most suitable ones for increasing body weight. For food conversion, for the specific ability for combining, crosses L1xL3 and L2xL4 are the most suitable, while for feed intake from hatch to 35 days old, crosses L1xL3 and L2xL3 would be satisfactory. In the second experiment, there have been evaluated body weight, and carcass weight and yield, breast, legs and wings of males quails slaughtered at 42 days old. It was observed the predominant additive effects of the expression characteristics, and the lines L1, L2 and L4 were the recommended for weight characteristics, and the cross L2xL4 being more suitable for a heavier weight of legs. In the third experiment, there have been evaluated the egg`s laying from 51st to 150th days of age of the birds, dividing the period in three (51-80, 81-110, and 111 to 150 days of age) in each period analysis were performed for egg quality, being rated the egg weight and Haugh unit. The additive genetic variability, expressed as the mean squares of general combining ability was significant for egg weight in all periods, as the Haugh unit, except for the first period. So the choice of genetically superior the hat within the inbred lines is feasible and can provide satisfactory earnings. The specific combining ability, which represents the influence of non-additive genetic effects, was significant only for Haugh unit with the exception of the second period, allowing the identification of superior hybrids for this trait, resulting from genetic complementation between the parents. In order to maximize egg production the L3 crosses can result in satisfactory earnings, while for egg weight lines L1 and L4 can print an increase in this feature, for Haugh unit, the cross L2xL3 is the most suitable.