Article
Poor reproductive response of anestrous Suffolk ewes to ram exposure is not due to failure to secrete luteinizing hormone acutely.
Journal of animal science - 1 Aug 1991
Minton J E, Coppinger T R, Spaeth C W, Martin L C
Abstract excerpt
Twenty Polypay-sired ewes (Group P) and 14 Suffolk ewes (Group S) were bled at 48-h intervals for 10 d beginning on April 6, 1989, and the serum was assayed for progesterone to determine which ewes were anestrous; 9/20 Group P ewes were anestrous, compared with 14/14 Group S ewes (P less than .001). Catheters were placed into the jugular vein of anestrous ewes from both breed groups (eight of Group P, seven of...
Topics
- Anestrus
- Animals
- Breeding
- Female
- Genotype
- Luteal Phase
- Luteinizing Hormone
- Male
- Ovulation
- Progesterone
- Seasons
- Sexual Behavior, Animal