The effect of GnRH administration/insemination time on follicular growth rate, ovulation intervals, and conception rate of Nili Ravi buffalo heifers in 7 -day-CIDR Co-synch.
Buffalo heifers
CIDR Co-synch
Conception rate
GnRH
Timed artificial insemination
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:
03 Dec 2021
03 Dec 2021
Historique:
received:
18
06
2021
accepted:
25
11
2021
entrez:
3
12
2021
pubmed:
4
12
2021
medline:
15
12
2021
Statut:
epublish
Résumé
The present study aimed to compare two different insemination times (72 vs 84 h) associated with an ovulation induction (GnRH) in a 7-day CIDR Co-synch to improve the conception rate of Nili Ravi buffalo heifers. Forty Nili Ravi buffalo heifers were randomly separated into two treatments based on artificial insemination (AI) timing (72 vs 84 h). All heifers were subjected to controlled internal drug release (CIDR), containing 1.38 g of progesterone for 7 days. On CIDR removal, both treatments received 150 µg of prostaglandin intramuscularly. In 7-day CIDR Co-synch (n = 20), animals were injected 100 µg of GnRH administration intramuscularly and inseminated concurrently at 72 h after CIDR removal. The remaining half (n = 20) were injected and inseminated concurrently at 84 h of CIDR removal. Pregnancy diagnosis was performed on day 40 of timed artificial insemination (TAI) with ultrasound. The follicular growth rate between 72 h after PGF
Identifiants
pubmed: 34860311
doi: 10.1007/s11250-021-03003-8
pii: 10.1007/s11250-021-03003-8
doi:
Substances chimiques
Pharmaceutical Preparations
0
Gonadotropin-Releasing Hormone
33515-09-2
Progesterone
4G7DS2Q64Y
Dinoprost
B7IN85G1HY
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
558Informations de copyright
© 2021. The Author(s), under exclusive licence to Springer Nature B.V.
Références
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