| Autor: |
Ali William Canaza-Cayo, Fernando Amarilho Silveira, Roxana Churata-Huacani, Júlio Sílvio de Sousa Bueno Filho |
| Jazyk: |
angličtina |
| Rok vydání: |
2024 |
| Předmět: |
|
| Zdroj: |
Reproduction and Breeding, Vol 4, Iss 3, Pp 174-178 (2024) |
| Druh dokumentu: |
article |
| ISSN: |
2667-0712 |
| DOI: |
10.1016/j.repbre.2024.07.001 |
| Popis: |
The present study aimed to estimate the genetic parameters for direct and maternal influences on birth weight (BW), weaning weight (WW) and postweaning weight (PW) of Texel sheep, raised in an extensive system from Brazil. Data file used in this study consisted of 834 body weight records of 834 Texel lambs (376 males and 458 females) born from 2020 to 2021, offspring of 475 ewes and 45 rams. Multivariate animal model was conducted to estimate the variance components, heritability and genetic correlations using the restricted maximum likelihood method in ASReml-R software, while the effects of fixed factors were analyzed by the general linear model procedure of statistical analysis system. Five different animal models, with or without maternal genetic effect, maternal permanent environment effect and covariance between additive genetic and maternal genetic effects, were fitted on the growth traits data of the Texel sheep population. AIC and BIC test results were used to evaluate the best fit models for growth traits. The effect of lamb's sex was significant on BW, WW and PW while birth type and year of lambing effects were on all traits (P |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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