Data/hora: 23/09/2024 16:38:14

Biblioteca(s): 	Embrapa Caprinos e Ovinos.	
Data corrente: 	01/08/1992	
Data da última atualização: 	05/12/2023	
Autoria: 	GUNAWAN, B.; JAMES, J. W.	
Título: 	The use of 'bending' in multiple trait selection of Border Leicester–Merino synthetic populations.	
Ano de publicação: 	1986	
Fonte/Imprenta: 	Australian Journal of Agricultural Research, v. 37, n. 5, p. 539-547, 1986.	
DOI: 	10.1071/AR9860539	
Idioma: 	Inglês	
Conteúdo: 	Abstract: The consistency of phenotypic and genetic parameters estimated for various body weight and wool characters in Border Leicester-Merino synthetic populations was investigated by calculating the eigenvalues of matrices of phenotypic covariances (P), genetic covariances (G), and the product of the inverse of the phenotypic with the genetic covariance matrix (P-1G). If these estimates were found to be inconsistent (non-positive definite), the bending technique was applied before genetic selection indices were calculated. In general, the P were positive definite, but the G or P-1G were always non-positive definite. The results suggest that P and G should always be checked carefully before genetic selection indices are calculated. The bending technique was quite effective in giving reasonable results for accuracy of selection.	
Palavras-Chave: 	Genetic parameters; Ovinos; Parametros geneticos.	
Thesagro: 	Melhoramento; Seleção.	
Thesaurus Nal: 	Animal genetics; Genetic correlation; Genetic covariance; Sheep.	
Categoria do assunto: 	H Saúde e Patologia	
Registro original: 	Embrapa Caprinos e Ovinos (CNPC)	
Exemplares: 	CNPC - (6092-1) - ADD - AP - PP - SP 01252 -  - SP 01252 - DIS