Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-12-17T18:08:09Z No. of bitstreams: 2 rogerio_carvalho_veloso.pdf: 757216 bytes, checksum: fe993450a9e7686366dfe072342dd019 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-12-17T18:08:35Z (GMT) No. of bitstreams: 2 rogerio_carvalho_veloso.pdf: 757216 bytes, checksum: fe993450a9e7686366dfe072342dd019 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) / Made available in DSpace on 2015-12-17T18:08:35Z (GMT). No. of bitstreams: 2 rogerio_carvalho_veloso.pdf: 757216 bytes, checksum: fe993450a9e7686366dfe072342dd019 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Previous issue date: 2012 / Funda??o de Amparo ? Pesquisa do estado de Minas Gerais (FAPEMIG) / Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico (CNPq) / Objetivou-se com este trabalho comparar o padr?o de crescimento, avaliar o desempenho, as caracter?sticas de carca?a e, verificar a diverg?ncia gen?tica por meio de t?cnicas de an?lise multivariada de diferentes gen?tipos de aves tipo caipira. Foram utilizados 840 pintos de um dia, machos, distribu?dos em delineamento inteiramente casualizado, dos seguintes gen?tipos: Caboclo, Carij?, Colorpak, Gigante Negro, Pesad?o Vermelho, Pesco?o Pelado e Tricolor. Para a determina??o das curvas de crescimento do peso corporal das aves, os dados coletados foram avaliados a partir dos modelos n?o-lineares: Brody, Gompertz, Log?stico, Richards e von Bertalanffy. Foi empregado o ?proc nlin? do SAS, utilizando o m?todo interativo de Gauss-Newton. Os crit?rios utilizados para escolha do modelo de melhor ajuste da curva de crescimento foram o coeficiente de determina??o, o desvio padr?o assint?tico, o desvio m?dio absoluto dos res?duos e o ?ndice assint?tico. O estudo do crescimento relativo dos cortes foi realizado mediante o modelo da equa??o alom?trica de Huxley. As caracter?sticas de desempenho (convers?o alimentar, ganho em peso m?dio di?rio, consumo de ra??o m?dio di?rio) foram avaliadas em quatro per?odos: 1 a 28, 1 a 56, 1 a 70 e 1 a 84 dias de idade. As caracter?sticas de carca?a (peso e rendimento de carca?a, peito e pernas) foram obtidas a partir do abate de 2 aves por boxe, aos 85 dias de idade. O peso corporal foi medido ao nascimento, 14, 28, 42, 56, 70 e 84 dias de idade. As an?lises estat?sticas foram realizadas utilizando-se o ?proc glm? do SAS. O desempenho dos gen?tipos tamb?m foi avaliado por meio da an?lise de vari?ncia multivariada e da fun??o discriminante linear de Fisher, usando os testes do maior autovalor de Roy e da uni?o-interse??o de Roy para as compara??es m?ltiplas. O estudo da diverg?ncia gen?tica foi feito por meio da an?lise por vari?veis can?nicas e pelo m?todo de otimiza??o de Tocher. Apenas as equa??es propostas por Gompertz, von Bertalanffy e Log?stico atingiram a converg?ncia, sendo que o modelo de von Bertalanffy o mais adequado para descrever o crescimento das aves. Todos os gen?tipos apresentaram crescimento alom?trico tardio, indicando que o crescimento do peito ? lento em rela??o ? carca?a. Verificou-se que em todos os per?odos, as aves do gen?tipo Colorpak apresentaram maior peso corporal, consumo de ra??o m?dio di?rio, ganho em peso m?dio di?rio e convers?o alimentar. Entretanto, os gen?tipos Caboclo e Gigante Negro apresentaram os piores desempenhos. Quanto ao rendimento de cortes pode ser observado que o gen?tipo Tricolor diferiu estatisticamente somente do Colorpak o para o rendimento de pernas. Para o rendimento de peito o Carij? e o Pesad?o Vermelho diferiu estatisticamente dos gen?tipos Caboclo e Gigante Negro, n?o diferindo dos demais. As duas primeiras vari?veis can?nicas explicaram 97,41% da varia??o entre os gen?tipos. A escolha do gen?tipo para cria??o deve ser feita de acordo com o interesse de mercado, pois h? diferen?as no desempenho e no rendimento de carca?a e dos cortes. A diverg?ncia gen?tica entre os gen?tipos avaliados permitiu a forma??o de quatro grupos com os seguintes gen?tipos: grupo 1 - Colorpak, grupo 2 - Pesad?o Vermelho e Pesco?o Pelado, grupo 3 - Carij? e Tricolor e grupo 4 - Caboclo e Gigante Negro. / 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 work was to compare the growth pattern, evaluate performance, carcass characteristics, and verify the genetic diversity by means of multivariate analysis of different genotypes in alternative lines of broiler chickens. We used 840 day old chicks, males distributed in a completely randomized design, the following genotypes: Caboclo, Carij?, Colorpak, Gigante Negro, Pesad?o Vermelho, Pesco?o Pelado and Tricolor. To determine the growth curves of the body weight of birds, collected data were evaluated from the nonlinear models: Brody, Gompertz, Logistic, Richards and von Bertalanffy. Was used "proc nlin" of SAS, using the iterative method of Gauss-Newton. The criteria used to choose the best model of the growth curve were the coefficient of determination, the asymptotic standard deviation, the mean absolute deviation of the waste and the asymptotic index. The study of the relative growth of the sections was performed using the model of Huxley's allometric equation. The performance characteristics (feed conversion, average daily weight gain, average daily feed intake) were evaluated in four periods: 1-28, 1-56, 1-70 and 1-84 days old. The carcass traits (weight and carcass yield, breast and leg) were obtained from the slaughter of two birds per pen, at 84 days old. Body weight was measured at birth, 14, 28, 42, 56, 70 and 84 days of age. Statistical analyzes were performed using the "proc glm" SAS. The performance of genotypes was also evaluated by multivariate analysis of variance and Fisher's linear discriminant function, using the tests of the largest eigenvalue of Roy and the Roy union-intersection for multiple comparisons. The study of genetic diversity was done by canonical variate analysis and the method of Tocher. Only the equations proposed by Gompertz, von Bertalanffy and Logistic reached convergence, and the von Bertalanffy model more appropriate to describe the growth of the birds. All genotypes showed late allometric growth, indicating that breast growth is slow relative to the housing. It was found that in all periods, the birds Colorpak genotype had higher body weight, average daily feed intake, average daily weight gain and feed conversion. However, the genotypes Caboclo and Gigante Negro had the worst performances. The yield of the cuts can be seen that the genotype Tricolor significantly different only from Colorpak to yield the legs. For breast meat yield Carij? and the Pesad?o Vermelho significant different genotypes Caboclo and Gigante Negro, not differing from the others. The first two canonical variables accounted for 97.41% of the variation among genotypes. The choice of the genotype for breeding should be done according to market interest, because there are differences in performance and carcass yield and cuts. The genetic divergence between the genotypes allowed the formation of four groups with the following genotypes: group 1 - Colorpak, group 2 - Pesad?o Vermelho and Pesco?o Pelado, group 3 - Carij? and Tricolor and group 4 - Caboclo and Gigante Negro.

Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-01-13T12:04:48Z No. of bitstreams: 2 maria_teresa_polcaro_silva.pdf: 541921 bytes, checksum: 0d8c69748e86719c4e99ab0805589c84 (MD5) license_rdf: 22974 bytes, checksum: 99c771d9f0b9c46790009b9874d49253 (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-01-13T12:06:12Z (GMT) No. of bitstreams: 2 maria_teresa_polcaro_silva.pdf: 541921 bytes, checksum: 0d8c69748e86719c4e99ab0805589c84 (MD5) license_rdf: 22974 bytes, checksum: 99c771d9f0b9c46790009b9874d49253 (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-01-13T12:06:45Z (GMT) No. of bitstreams: 2 maria_teresa_polcaro_silva.pdf: 541921 bytes, checksum: 0d8c69748e86719c4e99ab0805589c84 (MD5) license_rdf: 22974 bytes, checksum: 99c771d9f0b9c46790009b9874d49253 (MD5) / Made available in DSpace on 2015-01-13T12:06:46Z (GMT). No. of bitstreams: 2 maria_teresa_polcaro_silva.pdf: 541921 bytes, checksum: 0d8c69748e86719c4e99ab0805589c84 (MD5) license_rdf: 22974 bytes, checksum: 99c771d9f0b9c46790009b9874d49253 (MD5) Previous issue date: 2013 / 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 esse trabalho, avaliar caracter?sticas de desempenho e de carca?a de tr?s gen?tipos comerciais de frangos de corte, nos per?odos de 1 a 35, 1 a 42 e 1 a 49 dias de idade. Foram utilizados 2.970 pintos de um dia, machos e f?meas, sexados, de tr?s gen?tipos comerciais de frangos de corte (Cobb 500, Hubbard Flex e Ross 308). Foram utilizados tr?s programas nutricionais, com diferentes n?veis de amino?cidos. As aves foram distribu?das em delineamento inteiramente casualizado, em ensaio fatorial 3x3x2 (gen?tipo x ra??o x sexo), com cinco repeti??es e 33 aves/parcela. As caracter?sticas convers?o alimentar (CA), ganho em peso m?dio di?rio (GPMD) e consumo de ra??o m?dio individual (CR) peso corporal aos 35 (PC35), 42 (PC42) e 49 (PC49) dias de idade. Duas aves de cada repeti??o foram abatidas aos 35, 42 e 49 dias de idade para se avaliarem as caracter?sticas de carca?a: peso corporal ao abate, peso e rendimento da carca?a, peso e rendimento dos cortes (peito, pernas e asas). Verificou-se, no per?odo de 1 a 35 dias, intera??o entre gen?tipo x sexo para GPMD e PC35. No per?odo de 1 a 42 dias de idade, n?o houve diferen?as entre os gen?tipos para PC42, CR, GPMD ou CA. Verificou-se intera??o significativa sexo x gen?tipo para peso do peito, sendo que, entre os frangos de corte machos, as aves Cobb 500 apresentaram maior peso do peito, n?o diferindo dos machos Ross, que por sua vez n?o diferiram dos machos Hubbard. Por fim, no per?odo de 1 a 49 dias de idade, n?o houve diferen?a entre os gen?tipos para CR, GPMD ou PC49. De maneira geral, os desempenhos das aves Cobb 500, Hubbard Flex e Ross 308 n?o foram muito diferentes, sendo essas diferen?as mais presentes nas caracter?sticas de carca?a. A ra??o basal apresentou, de forma geral, melhores resultados que as ra??es com mais ou menos 10% de amino?cidos, evidenciando a boa adequa??o dos n?veis nutricionais da mesma. Os machos apresentaram-se superiores, de forma geral, para as caracter?sticas de desempenho e de carca?a, em rela??o ?s f?meas. / 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 performance characteristics and carcass traits of three genotypes of commercial broilers in the periods 1-35, 1-42 and 1-49 days of age. We used 2,970 day-old chicks, male and female, sexed, three cultivars of commercial broilers (Cobb 500, Hubbard Flex and Ross 308). We used three nutritional programs with different levels of amino acids. The broilers were distributed in a completely randomized design in factorial design 3x3x2 (genotype x diet x sex) with five replications and 33 birds / plot. The characteristics of feed conversion (FC) , average daily weight gain (ADG) and feed intake average individual (CR) body weight at 35 (PC35) , 42 (PC42) and 49 (PC49) days of age . Two birds per replicate were slaughtered at 35, 42 and 49 days of age to evaluate carcass traits: body weight at slaughter weight and carcass yield, weight and yield of cuts (breast, legs and wings). It was found in the period 1-35 days genotype x sex interaction for ADG and PC35. In the period 1-42 days of age, there were no differences among genotypes for PC42, CR, DWG or CA. There was significant interaction sex x genotype for breast weight, and between broilers, Cobb 500 had higher breast weight, did not differ from Ross 308 males, who in turn did not differ from males Hubbard. Finally, in the period 1-49 days of age, there was no difference between genotypes CR, DWG or PC49. In general, the performance of broilers Cobb 500, Hubbard Flex and Ross 308 were not very different, and these differences were more present in carcass characteristics. The basal diet showed, in general, better results than diets with more or less 10 % of amino acids, which shows the good nutritional adequacy of the same. The males showed themselves superior, overall, to the performance characteristics and carcass, compared to females.