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.

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 2015-01-13T11:01:33Z 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.