title: Effects of a prostaglandin F2 alpha synchronization program in lactating dairy cattle.
abstract: 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.
authors.affiliation: Department of Clinical Studies, School of Veterinary Medicine, University of Pennsylvania, Kennett Square 19348.
authors.forename: M
authors.initials: M
authors.lastname: Kristula
authors.forename: R
authors.initials: R
authors.lastname: Bartholomew
authors.forename: D
authors.initials: D
authors.lastname: Galligan
authors.forename: C
authors.initials: C
authors.lastname: Uhlinger
mesh_terms: 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
chemical_list: D015237:Dinoprost