Genetic and non-genetic factors affecting semen production and quality characteristics of Gir cattle breed under semi-arid climate.
Gir
and semen production
bull effect
longitudinal analysis
repeatability
Journal
Veterinary world
ISSN: 0972-8988
Titre abrégé: Vet World
Pays: India
ID NLM: 101504872
Informations de publication
Date de publication:
Aug 2020
Aug 2020
Historique:
received:
28
03
2020
accepted:
07
07
2020
entrez:
16
10
2020
pubmed:
17
10
2020
medline:
17
10
2020
Statut:
ppublish
Résumé
This study aims to evaluate genetic and non-genetic factors influencing semen production potential of Gir bulls. Data on semen quantity (n=6911) and quality (n=466) available from January 2011 to December 2018 at BAIF's frozen semen station, Jind, Haryana, India, were utilized for the study. Factors, namely, season of collection, age at collection, and bull (random effect) were studied for their effect on quantitative and qualitative semen traits. Least square means for the traits were obtained using a general linear model. The effect of age within bull for repeatable traits was analyzed using a longitudinal model with age as the control variable. Multivariate analysis using mixed repeatability model equation was utilized to estimate bull effect correlation (genetic + permanent environmental correlation), phenotypic correlations, and repeatability. The overall least square means of ejaculate volume, sperm concentration, total sperms, initial and post-thaw motility, hypo-osmotic swelling test, and acrosome integrity of frozen semen were 6.62±0.03 ml, 1.22±0.01 10 Individual bulls showed variation in traits measured over age. The result of the study could be utilized in suggesting suitable management plans to achieve the desired profit by improving semen quality in Gir bulls.
Identifiants
pubmed: 33061249
doi: 10.14202/vetworld.2020.1714-1718
pii: Vetworld-13-1714
pmc: PMC7522933
doi:
Types de publication
Journal Article
Langues
eng
Pagination
1714-1718Informations de copyright
Copyright: © Bhave, et al.
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