Genomic merit for reproductive traits. II: Physiological responses of Holstein heifers.
dairy heifer
genomic merit
reproductive physiology
Journal
Journal of dairy science
ISSN: 1525-3198
Titre abrégé: J Dairy Sci
Pays: United States
ID NLM: 2985126R
Informations de publication
Date de publication:
Jul 2019
Jul 2019
Historique:
received:
19
06
2018
accepted:
24
09
2018
pubmed:
30
4
2019
medline:
21
8
2019
entrez:
30
4
2019
Statut:
ppublish
Résumé
Fertility traits were recently added to the evaluation of genetic merit, allowing for the selection of Holstein cattle with improved reproductive performance. In the current study, we investigated the associations among genomic merit for daughter pregnancy rate (GDPR) and heifer conception rate (GHCR) and physiological responses during proestrus and diestrus. Holstein heifers (n = 99) were classified based on GDPR [high = 3.26 ± 0.76 (1.6 to 5.3), n = 48; low = -0.17 ± 0.75 (-1.8 to 1.0), n = 51] and GHCR [high = 2.75 ± 0.77 (1.5 to 5.5), n = 49; low = 0.06 ± 0.67 (-2.1 to 1.2), n = 50]. Heifers were fitted with an automated estrous detection device, were treated with PGF
Identifiants
pubmed: 31030930
pii: S0022-0302(19)30371-6
doi: 10.3168/jds.2018-15245
pii:
doi:
Substances chimiques
Progesterone
4G7DS2Q64Y
Types de publication
Journal Article
Langues
eng
Pagination
6639-6648Informations de copyright
Copyright © 2019 American Dairy Science Association. Published by Elsevier Inc. All rights reserved.