Melatonin Treatment in Rams and Their Replacement with Novel Treated Rams Advance First Lambing and Increase Fertility in Sarda Ewe Lambs.
ewe lambs
melatonin implants
puberty
ram replacement
sarda breed
Journal
Animals : an open access journal from MDPI
ISSN: 2076-2615
Titre abrégé: Animals (Basel)
Pays: Switzerland
ID NLM: 101635614
Informations de publication
Date de publication:
23 Apr 2021
23 Apr 2021
Historique:
received:
25
03
2021
revised:
22
04
2021
accepted:
23
04
2021
entrez:
30
4
2021
pubmed:
1
5
2021
medline:
1
5
2021
Statut:
epublish
Résumé
This study aims to find reliable strategies for advancing first mating and shortening the period from weaning to first lambing in ewe lambs. Sarda ewe lambs (n = 400) were selected from two farms and allocated into four separated groups of 100, all of which were exposed to fertile, adult rams over the course of a 50-day breeding period. The first treatment group (RMR) was exposed to four melatonin-treated rams which were replaced every ten days, whilst the second treatment group (RM) was exposed to four melatonin-treated rams which were not replaced. Alternatively, the first control group (RCR) was exposed to four untreated rams which were replaced every ten days, whilst the second control group (RC) was exposed to four untreated rams which were not replaced. In each group, lambing dates, fertility rate, litter size, and distance in days from ram introduction to lambing (DRIL) were recorded. The highest fertility rate was recorded in the RMR group (
Identifiants
pubmed: 33922809
pii: ani11051227
doi: 10.3390/ani11051227
pmc: PMC8146759
pii:
doi:
Types de publication
Journal Article
Langues
eng
Subventions
Organisme : RIPROGENOV by Regione Autonoma della Sardegna
ID : E88I19000200002
Organisme : Sassari University Research Fund
ID : FAR 2020
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