• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 6
  • Tagged with
  • 6
  • 6
  • 6
  • 6
  • 3
  • 3
  • 2
  • 2
  • 2
  • 2
  • 2
  • 2
  • 2
  • 2
  • 1
  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Uso de probi?tico sobre a energia e digestibilidade de nutrientes em ra??es para su?nos / Use of probiotic on energy and nutrient digestibility in diets for pigs

Souza, Gabrielle Silva 19 September 2014 (has links)
Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2016-01-12T13:44:42Z No. of bitstreams: 2 license_rdf: 22974 bytes, checksum: 99c771d9f0b9c46790009b9874d49253 (MD5) gabrielle_silva_souza.pdf: 711781 bytes, checksum: 08d13594e2bccca237e6f3c4656e613c (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2016-01-12T13:45:15Z (GMT) No. of bitstreams: 2 license_rdf: 22974 bytes, checksum: 99c771d9f0b9c46790009b9874d49253 (MD5) gabrielle_silva_souza.pdf: 711781 bytes, checksum: 08d13594e2bccca237e6f3c4656e613c (MD5) / Made available in DSpace on 2016-01-12T13:45:16Z (GMT). No. of bitstreams: 2 license_rdf: 22974 bytes, checksum: 99c771d9f0b9c46790009b9874d49253 (MD5) gabrielle_silva_souza.pdf: 711781 bytes, checksum: 08d13594e2bccca237e6f3c4656e613c (MD5) Previous issue date: 2014 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / Chr. Hansen / Para avaliar os efeitos do uso de probi?ticos sobre a metabolizabilidade da energia e digestibilidade de nutrientes em ra??es para su?nos, realizou-se um experimento com 32 su?nos, machos castrados, com peso de 31,2?4,7Kg, distribu?dos em delineamento experimental em blocos casualizados, em arranjo fatorial 2x2, sendo dois n?veis de energia metaboliz?vel (3200 e 3300 kcal/kg de energia metaboliz?vel), com ou sem adi??o de probi?tico, em 4 tratamentos e 8 repeti??es com um animal por unidade experimental. Os tratamentos foram assim constitu?dos: T1 - ra??o com 3200 kcal/kg de EM (3200 EM), T2 -ra??o T1 + 400 g/tonelada de probi?tico (3200 EM+P), T3 - ra??o com 3300 kcal/kg de EM (3300 EM) e T4 - ra??o T3 + 400 g/tonelada de probi?tico (3300 EM+P) e o per?odo experimental foram de 10 dias, sendo 5 dias para adapta??o dos su?nos ?s gaiolas e 5 dias para coleta de fezes e urina. Foram determinados os valores digest?veis da energia (ED), energia metaboliz?vel (EM), energia metaboliz?vel corrigida para balan?o de nitrog?nio (EMn), prote?na bruta (PB), extrato et?reo (EED), fibra bruta (FD), fibra em detergente neutro (FDND) e fibra em detergente ?cido (FDAD), mat?ria mineral (MMD), c?lcio (CaD) e f?sforo (PPD) das ra??es, para c?lculo dos coeficientes de metabolizabilidade e digestibilidade da energia e dos nutrientes. Maiores valores (P<0,05) de ED, EM e EMn, FDAD, EED e coeficiente de digestibilidade de extrato et?reo foram determinados na ra??o contendo 3300 EM+P. N?o houve diferen?a (P>0,05) entre as ra??es em rela??o aos coeficientes de digestibilidade e metabolizabilidade de energia, assim como para os valores de MMD, CaD, PPD, PD, FD e FDND. A inclus?o de probi?tico nas ra??es proporcionou incremento na energia das ra??es, devido ? melhoria na digestibilidade da FDA e EE. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Zootecnia, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2014. / ABSTRACT To evaluate the effects of probiotics on the metabolizable energy and digestibility of nutrients in diets for pigs, we made an experiment with 32 pigs, barrows weighing 31.2 ? 4,7Kg distributed in experimental design randomized blocks in a 2x2 factorial arrangement, with two levels of metabolizable energy (3200 and 3300 kcal / kg metabolizable energy), with or without added probiotic in 4 treatments and 8 repetitions with an animal per experimental unit. Treatments were: T1 - diet with 3200 kcal / kg of ME (3200 ME), T2 - T1 diet + 400 g / ton probiotic (3200 ME + P), T3 - diet with 3300 kcal / kg of ME (3300 ME) and T4 - T3 diet + 400 g / ton probiotic (3300 ME + P) and the experimental period was 10 days, with 5 days for adaptation of pigs cages and 5 days for collection of faeces and urine. We evaluated the digestible of energy (DE), metabolizable energy (ME), metabolizable energy corrected for nitrogen (MEn), crude protein (CP), ether extract (EE), crude fiber (FD), neutral detergent fiber (DNDF) and acid detergent fiber (DADF), mineral matter (MMD), calcium (CaD) and phosphorus (PPD) to calculate the coefficients of digestibility and metabolizable energy and nutrients. Higher values were found ??(P <0.05) of ED, ME, MEn, DADF, EE and digestibility of ether extract in diets containing 3300 ME + P. There was no difference (P> 0.05) among diets in relation to digestibility and metabolizable energy, as well as the values ??of PD, FD, DNDF, MMD, CaD and PPD. The inclusion of probiotics in feed resulted in increased energy rations due to improved digestibility of DADF and EE.
2

Res?duo ?mido de Cervejaria na Alimenta??o de Cabras. / Use of Wet Brewery Residue for Lactating Goats.

Silva, Viridiana Basoni 14 February 2007 (has links)
Made available in DSpace on 2016-04-28T14:59:46Z (GMT). No. of bitstreams: 1 2007 - Viridiana Basoni Silva.pdf: 2120660 bytes, checksum: 288bfedc4575c16c602010bb3ef36609 (MD5) Previous issue date: 2007-02-14 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior / This work was accomplished with aim of evaluate intake and apparent digestibility of nutrients, nitrogen balance, feeding behavior and water balance in lactating goats, fed with diets contend different levels of substitution of the concentrate by wet brewery grains (WBG): 0, 25, 50, 75 and 100%. Five goats Boer x Saanen and five Saanen goats were randomly assigned in two 5x5 Latin squares. The five experimental periods had duration length of 15 days, 10 for adaptation and five days for data and sample collections. The roughage used was tifton hay, in roughage:concentrated rate of 60:40. The animals were allocated in metabolic cages, fed twice a day. For the feeding behavior the feeding times (FT), idle time (IT) and rumination time (RT) were evaluated for each animals every 20 minutes during 24 hours. The dry matter intake (DMI), organic matter (OMI), crude protein (CPI), ether extract (EEI) neutral detergent fiber (NDFI) and total digestible nutrients (TDNI) in g/d and dry matter intake body weight (DMI BW) and neutral detergent fiber intake body weight (NDFI BW) had quadratic effect, diets more consumed were the with levels of substitution of 0 and 25%. The apparent digestibility of the dry matter (DM), organic matter (OM) and total carbohydrate (CT) decreased with linear effect with the increase of the levels of WBG in the diet and the digestibility of CP it had quadratic effect, increasing digestibility to the level of substitution of 25% of WBG of concentrate. The nitrogen balance had decreased linear effect lesser with increasing WBG. The feeding times (FT) and idles times (IT), weren t affected by increasing of levels of WBG in the diet, however, the rumination times and total chewing time had growing linear effect with increase of levels of WBG in the diet. The alimentary efficiency (ALE) and rumination efficiency (RUE) in DM/h had decreasing linear effect with increase of WBG in the diet, but when ALE NDF/h obtained a quadratic effect where larger efficiency were observed in the diets with 50% of WBG, RUENDF had decreased linear effect with increase of levels of WBG. The water balance was also influenced by the increase of the levels of WBG in diet, where larger intakes and excretions were obtained by animals that intake diet without WBG in its composition. Increases of levels of WBG decreased intake and excretions of water. It can be concluded the at diet can be used up to 50% of replacing of concentrate in the diets of lactating goats. / Este trabalho foi realizado com o objetivo de avaliar o consumo, a digestibilidade aparente dos nutrientes, o balan?o de nitrog?nio, comportamento alimentar e balan?o h?drico em cabras lactantes, alimentadas com dietas contendo diferentes n?veis de substitui??o do concentrado por res?duo ?mido de cervejaria (RUC): 0, 25, 50, 75 e 100%. Foram utilizadas cinco cabras mesti?as Boer x Saanen e cinco cabras Saanen distribu?das em dois quadrados latinos 5x5. Os cinco per?odos experimentais tiveram dura??o de 15 dias, sendo 10 de adapta??o e cinco dias de coleta de dados e de amostras. O volumoso utilizado foi o feno de tifton, na rela??o volumoso: concentrado de 40:60. Os animais foram alojados em gaiolas metab?licas, alimentados duas vezes ao dia. Na avalia??o do comportamento alimentar foram medidos os tempos dispendidos com alimenta??o, tempo de rumina??o e tempo de ociosidade que foram avaliados por observa??es dos animais a cada 20 minutos at? completarem 24 horas. O consumo de mat?ria seca em kg e em porcentagem do peso vivo (% PV), mat?ria org?nica, prote?na bruta, extrato et?reo, carboidratos totais e nutrientes digest?veis totais em g/d e fibra em detergente neutro em gramas e %PV, apresentaram resposta quadr?tica, onde as dietas mais consumidas foram a sem inclus?o de RUC e com n?vel de substitui??o de 25%. Observou-se resposta linear decrescente para a digestibilidade aparente da MS, MO e CT de acordo com o aumento dos n?veis de RUC na dieta e resposta quadr?tica para digestibilidade da PB , onde maior digestibilidade ocorreu na dieta com n?vel de substitui??o de 25% de RUC. O balan?o de nitrog?nio obteve resposta linear decrescente com o aumento de RUC na dieta. O tempo gasto com alimenta??o (TA) e com ociosidade (TO), n?o diferiram (P>0,05) quanto aos n?veis de RUC na dieta, no entanto, resposta linear crescente foi observada para os tempos dispendidos com rumina??o e com a mastiga??o total, com o aumento dos n?veis de RUC na dieta. A efici?ncia alimentar (EAL) e a efici?ncia de rumina??o (ERU) expressas em MS/h obtiveram resposta linear decrescente com o aumento de RUC na dieta, mas quando expressas em FDN/h a EAL obteve resposta quadr?tica onde maiores efici?ncias foram observadas nas dietas com 50% de RUC, a efici?ncia de rumina??o expressa em FDN/h apresentou resposta linear, diminuindo ? medida que aumentavam os n?veis de RUC. O balan?o h?drico tamb?m foi influenciado pelo aumento dos n?veis de RUC na dieta, onde animais que consumiram as dietas com 0% de RUC apresentaram maiores consumos e excre??es. ? medida que aumentaram os n?veis de RUC, menor foi o consumo e excre??o de ?gua. Concluiu-se que o RUC pode ser utilizado em at? 50% de substitui??o do concentrado na dieta de cabras lactantes.
3

N?veis de prote?na bruta e de concentrado em dietas para cordeiros / Levels of crude protein and concentrate in diets for lambs

Santos, Regina Silva 18 July 2013 (has links)
Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-01-05T15:55:10Z No. of bitstreams: 2 regina_silva_santos.pdf: 994226 bytes, checksum: 2d65c8a318f4c25b5c82de13adb8fbad (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-01-05T15:56:19Z (GMT) No. of bitstreams: 2 regina_silva_santos.pdf: 994226 bytes, checksum: 2d65c8a318f4c25b5c82de13adb8fbad (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-01-05T15:56:37Z (GMT) No. of bitstreams: 2 regina_silva_santos.pdf: 994226 bytes, checksum: 2d65c8a318f4c25b5c82de13adb8fbad (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) / Made available in DSpace on 2015-01-05T15:56:37Z (GMT). No. of bitstreams: 2 regina_silva_santos.pdf: 994226 bytes, checksum: 2d65c8a318f4c25b5c82de13adb8fbad (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) Previous issue date: 2013 / Foram conduzidos dois experimentos para avaliar o efeito de dietas, contendo dois n?veis de prote?na bruta e de concentrado sobre o consumo e a digestibilidade aparente total dos nutrientes, o balan?o de nitrog?nio (BN), o pH, a concentra??o de nitrog?nio amoniacal (N-NH3) no r?men, a efici?ncia microbiana e o desempenho em cordeiros. As dietas consistiram de 10,0 e 14,25% de prote?na bruta (PB) e de 40 e 60% de concentrado (CONC), utilizando-se a silagem de milho como volumoso. No ensaio de digestibilidade, foram utilizados quatro cordeiros machos, n?o castrados, F1 Santa In?s x Texel desmamados, com peso vivo m?dio de 21 kg, fistulados no r?men e distribu?dos em quadrado latino 4 x 4, com quatro animais, quatro dietas e quatro per?odos. Cada per?odo experimental teve dura??o de 15 dias, sendo nove dias para adapta??o e seis para coletas. Houve efeito da intera??o tripla (PBxCONCxTempo) sobre os teores de nitrog?nio amoniacal ruminal, enquanto o pH n?o foi afetado. N?o houve efeito da intera??o PB x CONC sobre as vari?veis estudadas. Houve efeito de n?veis de PB sobre o consumo e a digestibildade de PB, bem como, sobre as quantidades de N ingerido, absorvido, urin?rio e retido (BN) e sobre as excre??es de ?cido ?rico. No ensaio de desempenho, foram utilizados 30 cordeiros F1 Santa In?s x Texel, n?o castrados, com peso vivo m?dio de 19 kg, distribu?dos em esquema fatorial 2x2, no delineamento em blocos casualizados, com quatro dietas e oito repeti??es. Al?m desses, mais quatro cordeiros foram abatidos no in?cio da fase experimental, representando os animais refer?ncia. Houve efeito da intera??o de n?veis de PB e de concentrado para os consumos de EE, FDNcp e CNF. Houve efeito de n?veis de PB sobre os consumos de MS, MO, PB, FDNcp, NDT, PDR e PNDR, o GMD, GCPCJ e a CA. Houve efeito dos n?veis de concentrado sobre os consumos de MS, MO, PB, CNF e NDT e sobre GMD, GCPCJ, GCPCJ/GMD e CA. Conclui-se que, dietas com n?vel mais alto de PB ou de concentrado, proporcionam mais alto consumo de nutrientes e melhor desempenho animal. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Zootecnia, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2013. / ABSTRACT Two essays were performed in order to evaluate the effects of diets containing two levels of crude protein and concentrate on the consumption, the total apparent digestibility of the nutrients, the nitrogen balance, the pH, the N-NH3 concentration in the rumen, the microbial efficiency and the performance in lambs. The diets consisted of 10,0 and 14,25% crude protein (CP) and 40 and 60% concentrate, using corn silage as forage. In the digestibility essay, four male lambs were used. The animals were not castrated, F1 Santa In?s x Texel, weaned, rumen fistulated, presented an average live weight of 21 kg and were distributed in Latin square 4 x 4, with four diets and four periods. Each experimental period lasted 15 days, being nine of it for adaptation and six for the collections. Triple interaction (CP x CONC x Time) acted on the ruminal ammonia nitrogen contents, while the pH was not affected. The interaction between CP x CONC had no effect on the studied variables. The CP levels presented an effect on the consumption and the PB digestibility, as for the amounts of ingested, absorbed and urinary nitrogen and for the uric acid excretions. In the performance essays, 30 ?F1 Santa In?s x Texel? castrated lambs were used, presenting an average live weight of 19 kg and distributed in the randomized block design using four treatments and eight replicates. Beside these lambs, other four were slaughtered in the beginning of the experimental phase, representing the reference animals. The PB and the concentrate levels interaction affected the EE, NDFap and NFC consumption. The CP levels also affected the DM, OM, CP, NDFap, TDN, RDP and RUP, ADG, CGBWF and FC consumption. The concentrate levels affected DM, OM, CP, NFCap and TDN and also ADG, CGBWF, GCBWF/ADG and FC replicates. So, we conclude the crude protein and concentrate levels do not affect the nutrients consumption and digestibility, except for the crude protein which is higher in a diet with high protein levels, that also provide higher nitrogen balance values, N-NH3 concentrations and uric acid excretions. The diets containing 14,25% PB or 60% concentrate promote higher nutrients consumptions and better lambs performances.
4

Consumo, digestibilidade e desempenho de ovinos alimentados com casca de maracuj? desidratada / Intake, digestibility and performance of sheep fed with dried passion fruit peel

Sena, Janaina Adna Barbosa 26 September 2011 (has links)
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
5

N?veis de prote?na degrad?vel no r?men em dietas para cordeiros / Levels of rumen degradable protein in diets for lambs

Silva, Janaina de Lima 25 June 2010 (has links)
Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-11-18T18:04:13Z No. of bitstreams: 2 janaina_lima_silva.pdf: 2943351 bytes, checksum: eedd3d2b236bb813951c76f45384d9d9 (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-11-18T18:04:38Z (GMT) No. of bitstreams: 2 janaina_lima_silva.pdf: 2943351 bytes, checksum: eedd3d2b236bb813951c76f45384d9d9 (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) / Made available in DSpace on 2015-11-18T18:04:38Z (GMT). No. of bitstreams: 2 janaina_lima_silva.pdf: 2943351 bytes, checksum: eedd3d2b236bb813951c76f45384d9d9 (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (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) / Foram conduzidos dois experimentos para avaliar o efeito de dietas com diferentes n?veis de prote?na degrad?vel no r?men (PDR) sobre o consumo, a digestibilidade aparente total dos nutrientes, o balan?o de nitrog?nio e o desempenho em cordeiros. As dietas consistiram de quatro n?veis de PDR (9,15; 9,97; 10,79 e 11,61% na MS), correspondentes a 14,25; 15,50; 16,75 e 18,00% de PB, com 40% de silagem de milho e 60% de concentrado, na base da mat?ria seca. No ensaio de digestibilidade e balan?o de nitrog?nio foram utilizados oito cordeiros machos inteiros da ra?a Santa In?s, com peso vivo m?dio de 26,9 e 24,7 kg, distribu?dos em dois quadrados latinos 4 x 4. Cada per?odo experimental teve a dura??o de 15 dias, sendo 10 para adapta??o e cinco para coletas. Os animais foram mantidos em gaiolas metab?licas individuais, usando-se sacolas para coleta total de fezes, para fins de c?lculos dos coeficientes de digestibilidade in vivo. A coleta de urina foi realizada durante 24 horas, utilizando-se baldes pl?sticos cobertos com telas, quando mediu-se o volume da quantidade excretada nesse per?odo. N?o houve efeito de n?veis crescentes de PDR sobre os consumos de nutrientes, exceto de PDR. As digestibilidades aparentes totais dos nutrientes, bem como o balan?o de nitrog?nio, tamb?m n?o foram influenciadas pelos n?veis de PDR. No ensaio de desempenho foram utilizados 31 cordeiros machos inteiros da ra?a Santa In?s, com peso vivo m?dio de 22,0 kg, distribu?dos no delineamento inteiramente casualizado, com quatro tratamentos (9,15 a 11,61% de PDR na MS), tr?s com oito repeti??es e um com sete repeti??es. Al?m desses animais, mais quatro foram abatidos no in?cio da fase experimental, representando os animais-refer?ncia na metodologia do abate comparativo. N?o houve efeito de n?veis crescentes de PDR sobre os consumos de nutrientes, exceto de PB, PDR e PNDR, bem como para o peso vivo ao abate, ganho de peso total, ganho m?dio di?rio, convers?o alimentar e caracter?sticas de carca?a (peso, ganho e rendimento). Conclui-se que os n?veis de PDR, de 9,15 a 11,61% na MS das dietas, n?o alteram o consumo de nutrientes, exceto de PB, PDR e PNDR, nem a digestibilidade aparente total dos nutrientes, o balan?o de nitrog?nio e o desempenho de cordeiros. Assim, pode-se recomendar a utiliza??o do n?vel mais baixo de PDR (9,15% na MS, com 14,25% de PB), contribuindo para a redu??o da excre??o de nitrog?nio no ambiente e de custos no sistema de produ??o. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Zootecnia, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2010. / ABSTRACT Two experiments were conducted to evaluate the effect of diets with different levels of rumen degradable protein (RDP) on the intake, total apparent digestibility of nutrients, nitrogen balance and performance in lambs. Diets consisted of four levels of RDP (9.15, 9.97, 10.79 and 11.61% in DM), corresponding to 14.25, 15.50, 16.75 and 18.00% CP, with 40% corn silage and 60% concentrated on dry matter basis. In the digestibility trial and nitrogen balance were used eight Santa In?s lambs, with average weight of 26.9 and 24.7 kg divided into two 4 x 4 latin squares. Each experimental period lasted 15 days, considering 10 for adaptation and five for collections. The animals were kept in individual metabolic cages, using bags for total fecal collection for purposes of calculating the digestibility in vivo. The urine collection was performed during 24 hours, using plastic buckets covered with canvas, when the volume of the amount excreted in this period was measured. There was no effect of increasing levels of RDP on the nutrients intake, except for RDP. The apparent digestibilities of nutrients and nitrogen balance were also not influenced by levels of RDP. In the performance test were used 31 male Santa In?s lambs, with average weight of 22.0 kg, allotted in a completely randomized design with four treatments (9.15 to 11.61% RDP in DM), three with eight and one with seven replicates. Besides these animals, four were slaughtered in the early experimental stage, representing the reference animals in the methodology of comparative slaughter. There was no effect of increasing levels of RDP on intake of nutrients, except for CP, RDP and RUP as well as the slaughter live weight, total weight gain, average daily gain, feed conversion and carcass traits (weight, gain and yield). We conclude that levels of RDP, from 9.15 to 11.61% in DM of diets, do not alter nutrient intake, except for CP, RDP and RUP nor the total apparent digestibility of nutrients, nitrogen balance and lambs performance. Thus, we can recommend the use of the lower level of RDP (9.15% DM, with 14.25% CP), contributing to the reduction of nitrogen excretion in the environment and of costs in the production system.
6

Avalia??o nutricional do farelo de crambe em dietas para ovinos

Azevedo, Katharine Kelly de 25 September 2017 (has links)
Submitted by Jos? Henrique Henrique (jose.neves@ufvjm.edu.br) on 2018-07-19T20:36:06Z No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) katharine_kelly_azevedo.pdf: 1197322 bytes, checksum: 47b2dff938cb953a1d3c90817b658008 (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2018-08-22T12:59:16Z (GMT) No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) katharine_kelly_azevedo.pdf: 1197322 bytes, checksum: 47b2dff938cb953a1d3c90817b658008 (MD5) / Made available in DSpace on 2018-08-22T12:59:16Z (GMT). No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) katharine_kelly_azevedo.pdf: 1197322 bytes, checksum: 47b2dff938cb953a1d3c90817b658008 (MD5) Previous issue date: 2018 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / Objetivou-se avaliar o efeito de n?veis crescentes de substitui??o da PB do concentrado (0, 25, 50 e 75% com base na MS) pela PB do farelo de crambe (FC) em dietas para ovinos, sobre o consumo e digestibilidade de nutrientes, par?metros ruminais, N ureico no plasma sangu?neo (NUP), excre??o urin?ria de N ureico (EUNU), balan?o de N, fluxo intestinal de N microbiano (NMIC) e efici?ncia de s?ntese de prote?na microbiana (EFIM). Foram utilizados quatro ovinos fistulados no r?men, SRD, machos, castrados, alojados em gaiolas metab?licas, com idade m?dia inicial de 18 meses e peso vivo m?dio inicial de 50 kg, distribu?dos em delineamento quadrado latino 4 x 4 (4 tratamentos e 4 per?odos). Cada per?odo foi composto de 14 dias, sendo sete dias destinados ? adapta??o dos animais ? dieta e ?s condi??es experimentais e sete dias para as coletas. As dietas foram compostas por 50% de volumoso (silagem de milho) e 50% de concentrado (%MS). Os resultados foram submetidos ? an?lise de vari?ncia e estudo de regress?o a 5% de signific?ncia, utilizando-se o programa estat?stico SAS. Foi verificado efeito linear crescente para o consumo de extrato et?reo e linear decrescente para o consumo de carboidratos n?o fibrosos corrigidos para cinzas e prote?na. Com o aumento dos n?veis de FC nas dietas observou-se redu??o na digestibilidade de todos os nutrientes avaliados, exceto para PB e EE. N?o houve efeito para o pH do l?quido ruminal, por?m para os valores de N amoniacal no l?quido ruminal foi observado efeito linear decrescente com a inclus?o do FC na dieta. Tamb?m n?o foi observado efeito das dietas para o balan?o de N e EUNU. Contudo, para a concentra??o de NUP houve efeito linear decrescente. O NMIC e EFIM apresentaram efeito linear crescente com a inclus?o do FC. De acordo com os resultados alcan?ados no presente estudo, o FC possui potencial como alimento proteico alternativo na dieta de ovinos, pois assegura consumo e utiliza??o do N semelhante a alimentos convencionais e contribui pra melhor s?ntese de prote?na microbiana. Apesar da redu??o da digestibilidade dos nutrientes com a inclus?o do FC ?s dietas, o consumo de NDT n?o foi prejudicado. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Zootecnia, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2017. / The objective of this study was to evaluate the effect of increasing levels of CP replacement of concentrate (0, 25, 50 and 75% based on DM) for crambe meal (CM) CP in sheep diets regarding on nutrient intake, digestibility, ruminal parameters, blood plasma urea nitrogen (NUP), urinary urea nitrogen excretion (EUNU), N balance, intestinal flow of microbial nitrogen (NMIC), and efficiency of microbial protein synthesis (EFIM). Four rumen fistulated male sheep of undefined breed, castrated, housed in metabolic cages, with initial mean age of 18 months and initial mean body weight (BW) of 50 kg, were distributed in a 4 x 4 Latin square design (4 treatments and 4 periods). Each period was composed of 14 days, seven days for the adaptation of the animals to the diet and the experimental conditions and seven days sampling. The diets were composed of 50% of roughage (corn silage) and 50% of concentrate (% MS). The results were submitted to analysis of variance and regression study at 5% of significance using the SAS statistical program. It was verified crescent linear effect for the intake of ethereal extract and linear effect decreasing for the intake of non-fibrous carbohydrates corrected for ashes and protein. It was observed a reduction of the digestibility of all the nutrients with increase of CM levels in the diets, except for PB and EE. There was no effect on the ruminal fluid pH, but it was observed linear decreasing effect for the values of ammoniacal nitrogen in the rumen according to the inclusion of the CM in the diets. It was not observed effect of diets on N balance and EUNU. However, there was a linear decreasing effect for NUP. The was in increasing linear effect on NMIC and the EFIM with the inclusion of CM. According to the results obtained in the present study, the CM has potential as an alternative protein food in the diets of sheep, because the intake and use of N is similar to conventional foods and improves the microbial protein synthesis. Even with the reduction of nutrient digestibility with the inclusion of CM in diets, the intake of TDN was not affected.

Page generated in 0.1025 seconds