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| Silva,Elizabete Cristina da; McManus,Concepta Margaret; Guimarães,Maria Pia Souza Lima Mattos de Paiva; Gouveia,Aurora M.G.; Facó,Olivardo; Pimentel,Daniel M.; Caetano,Alexandre Rodrigues; Paiva,Samuel Rezende. |
| Brazilian goats are generally kept in small herds and extensive rearing systems, mainly in the northeastern region of the country. Despite production improvement in recent years, the lack of pedigree control has affected genetic progress. This study aimed to validate a panel of 16 microsatellites for parentage testing in locally adapted and commercial goats breeds raised in Brazil, as well as to compare its efficiency with the panel recommended by the Brazilian Ministry of Agriculture, Livestock and Supplies (MAPA) in 2004. The number of alleles and expected heterozygosity (He) per marker ranged from four to 18, and from 0.051 to 0.831, respectively. Using all markers, 100% of parentage cases of the validation dataset were resolved with a strict confidence... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Parentage errors; Animal breeding; Animal genetic resources; Capra hircus. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572014000100010 |
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| Silva,Elizabete Cristina da; Dutra Junior,Wilson Moreira; Ianella,Patrícia; Gomes Filho,Manoel Adrião; Oliveira,Cláudio José Parro de; Ferreira,Débora Nathália de Moura; Caetano,Alexandre Rodrigues; Paiva,Samuel Rezende. |
| This study estimated the genetic diversity and structure of 12 genetic groups (GG) of locally adapted and specialized pigs in the state of Pernambuco using 22 microsatellite markers. Nine locally adapted breeds (Baé, Caruncho, Canastra, Canastrão, Mamelado, Moura, Nilo, Piau and UDB (Undefined Breed)) and 3 specialized breeds (Duroc, Landrace and Large White), totaling 190 animals, were analyzed. The Analysis of Molecular Variance (AMOVA) showed that 3.2% of the total variation was due to differences between genetic groups, and 3.6% to differences between local and commercial pigs. One hundred and ninety eight alleles were identified and apart from the Large White breed, all GG presented Hardy-Weinberg Equilibrium deviations for some loci. The total and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Animal genetics resources; Genetic variability; Microsatellites loci; Sus Scrofa. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011000800010 |
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| Abreu,Bueno da Silva; Barbosa,Severino Benone Paes; Silva,Elizabete Cristina da; Santoro,Kleber Régis; Batista,Ângela Maria Vieira; Martinez,Rafael Leonardo Vargas. |
| ABSTRACT Using multivariate analyses, this study attempted to identify important traits explaining the relationship between milk production and quality produced by Holstein cows. Monthly milk records from three commercial dairy farms located in the Agreste region of Pernambuco, Brazil, collected in the period from 2007 to 2017, were used. A total of 5,872 observations regarding milk production, milk components and somatic cell score (SCS) were analyzed using principal component analysis (PCA) and cluster analysis. According to the former analysis, the first three principal components explained 79.69% of the total variation. Total solids content contributed 29.66% of the variation in the first principal component, while lactose content contributed 49.43% of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Multivariate analysis; Dairy cattle; Milk composition. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902020000300417 |
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