Comparison of palpable corpora lutea with serum progesterone concentrations in cows.
Serum progesterone concentrations were used to evaluate rectal palpation of corpora lutea as a method for assignment of postpartum beef cows to prostaglandin treatment and nontreatment groups. On the basis of 124 evaluations, 18% of the cows were assigned incorrectly to the treatment group and 37% of the cows were assigned incorrectly to the nontreatment group. The inability of palpators to accurately select cows with a mature corpus luteum may diminish the success of estrus synchronization regimens that use rectal palpation of corpora lutea for selection of cows for prostaglandin therapy.
D000818:Animals; D002417:Cattle / Q000502:physiology*; D003338:Corpus Luteum / Q000502:physiology*; D005260:Female; D010173:Palpation / Q000662:veterinary; D011247:Pregnancy; D011258:Pregnancy Tests / Q000662:veterinary*; D011270:Pregnancy, Animal; D011374:Progesterone / Q000097:blood*
D011374:Progesterone