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| Nascimento,Carlos Souza do; Machado,Marco Antonio; Martinez,Mario Luiz; Silva,Marcos Vinícius G. Barbosa da; Guimarães,Marta Fonseca Martins; Campos,Ana Lúcia; Azevedo,Ana Luisa Sousa; Teodoro,Roberto Luiz; Verneque,Rui da Silva; Guimarães,Simone Eliza Facioni; Oliveira,Denise Aparecida Andrade. |
| The effect of the bovine major histocompatibility complex (BoLA) locus on animal health may be due to a direct action of its alleles on immune functions, whereas its indirect effect on production traits might be explained by the better general health conditions of more productive animals. In the present study, the BoLA-DRB3 gene was investigated in 1058 cows belonging to seven Brazilian Gyr Dairy herds (Bos indicus, Zebu cattle). A total of 37 alleles were identified, 15 of them described for the first time in a Zebu breed. A highly significant association (p < 0.02) was observed between allele *54 and a decrease (-26.1 kg) in milk protein yield and there was a significant association (p < 0.05) between this allele and lower (-26.07 kg) milk fat... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cattle; Marker-assisted selection; Molecular markers; PCR-RFLP. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572006000400011 |
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| Silva,Marcos Vinicius Gualberto Barbosa da; Martinez,Mário Luiz; Machado,Marco Antonio; Nascimento,Carlos Souza do; Campos,Ana Lúcia; Guimarães,Marta Fonseca Martins; Azevedo,Ana Luisa Sousa; Moita,Antônia Kécya França; Lui,Jeffrey Frederico. |
| O objetivo deste trabalho foi avaliar a associação dos polimorfismos dos genes bGH, IGF-1 e PIT-1 com características de peso e ganho de peso numa população F2 de bovinos (Gir x Holandês), pela técnica de PCR-RFLP. As freqüências alélicas A e B, do gene PIT-1, e dos genótipos AA, AB e BB, nas populações parentais foram semelhantes entre si, mas diferentes das freqüências nas populações cruzadas F1 e F2, para esse gene. Quanto ao gene bGH, os animais da raça Holandesa apresentaram freqüência de 100% para o alelo E e os animais da raça Gir, 92% para o alelo F, resultando em alta freqüência de indivíduos heterozigotos nas populações F1 e F2. Quanto ao gene IGF-1, todos os animais da raça Holandesa eram heterozigotos (AB) e, nos animais Gir, a maioria dos... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Marcadores moleculares; PCR-RFLP. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2006000600013 |
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| Silva,Kleibe de Moraes; Guimarães,Simone Eliza Facioni; Lopes,Paulo Sávio; Nascimento,Carlos Souza do; Lopes,Marcos Soares; Amaral,Mayara Morena Del Cambre. |
| Uma população F2 de suínos obtida a partir do intercruzamento da geração F1, proveniente do acasalamento divergente de dois machos da raça naturalizada brasileira Piau com 18 fêmeas comerciais (Landrace × Large White × Piétrain) e genotipada para cinco marcadores tipo microssatélite foi utilizada com o objetivo de mapear locos de características quantitativas associados a características de desempenho no cromossomo 4. As características avaliadas foram: número de tetas, peso ao nascimento, peso aos 21, 42, 63, 77 e 105 dias de idade, peso ao abate, consumo de ração, conversão alimentar e ganho de peso médio diário dos 77 aos 105 dias de idade e idade ao abate. Utilizou-se o método de regressão por intervalo de mapeamento com análises realizadas por meio do... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cruzamento divergente; Marcadores microssatélite; Melhoramento animal. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982009000300011 |
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| Ribeiro,Marta Jeidjane Borges; Pinto,Luís Fernando Batista; Barbosa,Ana Carla Borges; Santos,Gladston Rafael de Arruda; Pinto,Ana Paula Gomes; Nascimento,Carlos Souza do; Barbosa,Leandro Teixeira. |
| ABSTRACT: This study aimed to identify the principal components (PC) that explain the highest percentages of total variance and best characterize the in vivo and carcass morphologies of Anglo-Nubian crossbred goats. Nineteen carcass morphometric traits and six in vivo morphometric traits were measured in 28 kids at eight months of age. Principal component analysis indicated that five PC were able to explain 83.57% of the total variance in the 19 original carcass traits. Those components were termed PC1-Carcass Size, PC2 - Body Condition, PC3-Carcass Width, PC4-Chest Depth, and PC5 - Hindquarter. For in vivo morphometric traits, the first two principal components explained 78.86% of the total variance. These components were called PC1-In vivo Size and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Carcass; Correlation; Multivariate analysis; Variance.. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018000600653 |
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| Band,Guilherme de Oliveira; Guimarães,Simone Eliza Facioni; Lopes,Paulo Sávio; Peixoto,Jane de Oliveira; Faria,Danielle Assis; Pires,Aldrin Vieira; Figueiredo,Frederico de Castro; Nascimento,Carlos Souza do; Gomide,Lúcio Alberto de Miranda. |
| The PSS genotypes of 596 F2 pigs produced by initial mating of Brazilian native boars commercial sows and were characterized by PCR-RFLP and their carcass and performance traits were evaluated. Among the 596 animals analyzed, 493 (82.72%) were characterized as NN and 103 (17.28%) as Nn. With respect to carcass traits, Nn animals presented higher (p < 0.05) right half carcass weight, left half carcass weight, loin depth and loin eye area, and lower shoulder backfat thickness, backfat thickness between last and next to last but one lumbar vertebrae and backfat thickness after last rib at 6.5 cm from the midline compared to NN animals. Nn animals also showed (p < 0.05) higher values for most of the cut yields, indicating higher cutting yields for... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Carcass; Performance; PSS gene; PCR-RFLP; Pig. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572005000100016 |
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| Sousa,Bráulio Maia de Lana; Rizato,César Augusto; Fagundes,Jailson Lara; Fontes,Pryanka Thuyra Nascimento; Backes,Alfredo Acosta; Oliveira Júnior,Luiz Fernando Ganassali de; Cruz,Natan Teles; Nascimento,Carlos Souza do. |
| Abstract: The objective of this work was to evaluate the tillering dynamics of 'Suvernola' digit grass (Digitaria eriantha) when subjected to different defoliation frequencies. Four defoliation frequencies (interval among harvests) were evaluated - very high, when the grass reached 25 cm in height; high, 35 cm; medium, 45 cm; and low, 55 cm - in two seasons of the year, with higher and lower insolation, from January 2015 to January 2016. A randomized complete block design with four replicates was used. The increase in defoliation frequency increased the number of generations and the appearance, mortality, and density rates of tillers, besides decreasing their survival rate, without changing population stability. At the time of lower insolation, tiller... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Digitaria eriantha; Harvest height; Pasture persistence. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2019000104303 |
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