Data/hora: 07/06/2024 11:01:01

Biblioteca(s): | Embrapa Caprinos e Ovinos.
Data corrente: | 06/12/1995
Data da última atualização: | 03/10/2016
Autoria: | MANFREDI, E.; RICORDEAU, G.; BARBIERI, M. E.; AMIGUES, Y.; BIBE, B.
Título: | Génotype caséine alpha s1 et sélection des boucs sur descendance dans les races Alpine et Saanen.
Ano de publicação: | 1995
Fonte/Imprenta: | Genetics Selection Evolution, v. 27, n. 5, p. 451-458, 1995.
Idioma: | Inglês
Conteúdo: | Genotype at the asi-casein locus and selection of bucks on progeny test in the Alpine and Saanen breeds. A retrospective study on 184 Alpine and 96 Saanen bucks born between 1987 and 1990 indicates that the fractions of bucks selected after progeny testing depended on the as1-casein genotype. In these breeds, the asl-casein locus exhibits 3 strong alleles (pooled under the A designation), 2 week alleles (E and F), and one null allele (0). In the Alpine breed, current selection criteria resulted in 49% of AA bucks retained after progeny testing. Corresponding figures for the genotypes AE, AF, AO and bucks not carrying the strong allele A are 30%, !8%, 0% and 0%, respectively. In the Saanen breed, percentages of bucks retained after progeny testing were 44%, 36% and 18% for the genotypes AE plus AF, EE, and EF plus FF, respectively. These results highlight the value of typing young bucks in order to avoid progeny testing of males not carrying strong alleles at the asl-casein locus.
Palavras-Chave: | Polimorfimo genético; Priogênie.
Thesagro: | Caprino; Leite; Melhoramento genético animal; Produção; Seleção genética.
Thesaurus Nal: | Genetic polymorphism; Goats; Milk production.
Categoria do assunto: | L Ciência Animal e Produtos de Origem Animal
Registro original: | Embrapa Caprinos e Ovinos (CNPC)
Exemplares: | CNPC - (2991-1) - ADD - AP - PP -  -  -  - DIS