Effects of a prostaglandin F2 alpha synchronization program in lactating dairy cattle.
A comparison was made between two different methods of reproductive management in the dairy cow. One protocol administered prostaglandin to open cows weekly; the other administered prostaglandin to open cows with a corpus luteum identified by rectal palpation. Survival analysis was used to analyze the data. Cows receiving weekly doses of prostaglandin had a 30% higher pregnancy rate (number of pregnancies per time) than the cows receiving prostaglandin based on rectal palpation of a corpus luteum. The average number of days to first insemination was shorter in cows given prostaglandin weekly.
Kristula
M
M
Department of Clinical Studies, School of Veterinary Medicine, University of Pennsylvania, Kennett Square 19348.
Bartholomew
R
R
Galligan
D
D
Uhlinger
C
C
D000818:Animals; D002417:Cattle / Q000502:physiology*; D015237:Dinoprost / Q000008:administration & dosage*; D005260:Female; D007774:Lactation; D011247:Pregnancy; D011270:Pregnancy, Animal; D012099:Reproductive Techniques / Q000191:economics / Q000662:veterinary
D015237:Dinoprost