Data/hora: 16/06/2024 00:52:29

Biblioteca(s): | Embrapa Caprinos e Ovinos.
Data corrente: | 20/09/2007
Data da última atualização: | 20/09/2007
Autoria: | BAGHERI, M.; MORADI SHAHRBABAK, M.; VAEZ TORSHIZI, R.
Título: | Genetic and phenotypic correlation of compositive traits with birth and weaning weight in Baluchi sheep.
Ano de publicação: | 2006
Fonte/Imprenta: | In: WORLD CONGRESS ON GENETICS APPLIED TO LIVESTOCK PRODUCTION, 8., 2006, Belo Horizonte, MG. Proceedings... Belo Horizonte: Instituto Prociência, 2006. 4 f. 1 CD-ROM.
Idioma: | Inglês

Conteúdo:

Knowledge of genetic correlations among economic traits is essential for deriving a selection strategy for any breed. In this study, data collected on the Baluchi sheep in a breeding station in north-east of Iran, were used to estimate genetic and phenotypic correlations of total weight of lamb weaned per ewe joined in first, 2nd, 3rd and 4th parity (TWW1/EJ?TWW4/EJ) with birth (BW) and weaning weight (WW). (Co) variance components and genetic correlations were estimated using bivariate animal models with DFREML procedures. Genetic correlations of TWW/EJ with BW in different parities were low to moderate and positive (0.159 to 0.320). High positive genetic correlations were estimated between WW and TWW/EJ in all parities that ranged from 0.948 (with TWW2/EJ) to 0.971 (with TWW3/EJ). Phenotypic correlations were lower than genetic correlations which were variable from 0.097 (between BW and TWW3/EJ) to 0.491 (between WW and TWW2/EJ). The result of this study indicate that TWW/EJ, as an important but sex limited traits could be used in selection criterion to indirectly
improve the related traits.

Palavras-Chave: | Correlação fenótipica; Correlação genética.
Thesagro: | Ganho de Peso; Ovino; Peso ao Nascer.
Categoria do assunto: | --
Registro original: | Embrapa Caprinos e Ovinos (CNPC)
Exemplares: | CNPC - (20302-1) - ADD - PL - -- - CD 0171 -  -  - DIS