A retrospective analysis of bull:cow ratio effects on pregnancy rates of beef cows previously enrolled in fixed-time artificial insemination protocols.
bull
cow ratio
fixed-timed artificial insemination
Journal
Translational animal science
ISSN: 2573-2102
Titre abrégé: Transl Anim Sci
Pays: England
ID NLM: 101738705
Informations de publication
Date de publication:
Jul 2021
Jul 2021
Historique:
received:
28
09
2020
accepted:
04
08
2021
entrez:
13
9
2021
pubmed:
14
9
2021
medline:
14
9
2021
Statut:
epublish
Résumé
This retrospective study aimed to determine if the number of cows exposed per bull affects pregnancy rates of cows returning to estrus after fixed-time artificial insemination (FTAI). Data were compiled over the course of 13 breeding seasons (six fall and seven spring seasons) between 2010 and 2017 from the Virginia Department of Corrections herd. Available records contained data from 17 farms and 324 groups of cows (average 47 cows/group). Multiparous cows and heifers (average age per group: 5.11 ± 0.14 yr;
Identifiants
pubmed: 34514347
doi: 10.1093/tas/txab129
pii: txab129
pmc: PMC8427174
doi:
Types de publication
Journal Article
Langues
eng
Pagination
txab129Informations de copyright
© The Author(s) 2021. Published by Oxford University Press on behalf of the American Society of Animal Science.
Références
J Anim Sci. 1995 May;73(5):1251-7
pubmed: 7665355
Anim Front. 2018 Nov 10;9(1):32-38
pubmed: 32002237
Theriogenology. 2018 Dec;122:14-22
pubmed: 30199740
Vet Clin North Am Food Anim Pract. 1997 Jul;13(2):331-44
pubmed: 9216053
J Anim Sci. 1993 Feb;71(2):291-7
pubmed: 8440646
J Anim Sci. 2015 May;93(5):2111-23
pubmed: 26020307
J Dairy Sci. 2017 Dec;100(12):10367-10380
pubmed: 29153170
Theriogenology. 2008 Dec;70(9):1507-15
pubmed: 18692228
J Am Vet Med Assoc. 1977 Oct 1;171(7):639-42
pubmed: 914693
J Anim Sci. 1990 Mar;68(3):817-30
pubmed: 2180878
J Anim Sci. 2013 Jan;91(1):465-76
pubmed: 22785163
J Anim Sci. 2009 Mar;87(3):914-21
pubmed: 18997066
J Anim Sci. 2012 Nov;90(11):4055-62
pubmed: 22585820