Bayesian estimate of genetic parameters for growth traits in Lori Bakhtiari sheep.
Bayesian method
Genetic parameters
Growth traits
Lori-Bakhtiari sheep
Journal
Tropical animal health and production
ISSN: 1573-7438
Titre abrégé: Trop Anim Health Prod
Pays: United States
ID NLM: 1277355
Informations de publication
Date de publication:
19 Sep 2021
19 Sep 2021
Historique:
received:
27
04
2021
accepted:
10
09
2021
entrez:
19
9
2021
pubmed:
20
9
2021
medline:
22
9
2021
Statut:
epublish
Résumé
The information of birth (10,017 records), weaning (9439 records), 6 months (7669 records), 9 months (4536 records), and yearling weights (417 records) collected from 1989 to 2016 by the Lori Bakhtiari (Sholi) sheep breeding station located in Shahrekord were used to estimate the genotypic and phenotypic parameters of growth traits of Lori Bakhtiari sheep. The components of variance and genetic parameters were estimated by the Bayesian statistical method based on the Gibbs sampling technique due to the high accuracy of this method. Factors including birth year, lamb sex, birth type, and maternal age at lambing have significant effects on all of these traits (P < 0.01) and were considered fixed effects in the statistical model for estimation of genetic parameters. Lamb weight at weaning was used as a covariate in the model. Based on the models with the lowest Akaike information criterion, direct heritability for birth, weaning, 6-month, 9-month, and yearling weights were 0.36, 0.18, 0.21, 0.27, and 0.32, respectively. The moderate heritability obtained for the studied traits pointed up the effectiveness of selection in genetic improvement, but the environmental conditions should be improved for better performance of weight traits.
Identifiants
pubmed: 34537883
doi: 10.1007/s11250-021-02900-2
pii: 10.1007/s11250-021-02900-2
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
457Informations de copyright
© 2021. The Author(s), under exclusive licence to Springer Nature B.V.
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