Ovarian responses of anestrous ewes to the "ram effect"

Abstract

Ovarian responses to the "ram effect" were characterized in 11 anestrous Corriedale ewes. In seven ewes, there was a luteinizing hormone (LH) surge 36.7 +/- 12.3 h (mean SEM) after ram introduction and a concurrent increase (P < 0.05) in serum follicle stimulating hormone (FSH). Ovarian responses (monitored ultrasonographically) were highly variable. One ewe had two luteal phases (short and normal, respectively), three had delayed ovulation (days 5-7), two had luteinization of non-ovulatory follicles, one developed a luteinized follicular cyst, and four had no luteal phase

Published in

Canadian Journal of Animal Science
2002, volume: 82, number: 4, pages: 599-602
Publisher: AGRICULTURAL INST CANADA

SLU Authors

• Forsberg, Mats

  • Department of Animal Biosciences, Swedish University of Agricultural Sciences
    

UKÄ Subject classification

Gynaecology, Obstetrics and Reproductive Medicine

Publication identifier

• DOI: https://doi.org/10.4141/A02-005

Permanent link to this page (URI)

https://res.slu.se/id/publ/66