The effect of prostglandin F2α (PGF) on gestation in the ewe following mating was evaluated during the 1983-84 and 1984-85 breeding-lambing season. Ewes were exposed to Suffolk (trial I) or Hampshire (trial II) rams and received 10 mg of PGF intramuscularly on either day 1, 2, 3, 4, 5, 6 pr 7 postmating in trial I or on either day 2, 2, 1/2, 3, 3 1/2, 4, 4 1/2, 5, 5 1/2, 6 or 6 1/2 postmating in trial II. Administration of PGF later than day 4 decreased the number of ewes lambing to the first mating but had no effect on subsequent fertility in either trial as compared with the controls.
Number of Pages
South Dakota State University
Copyright © 1985 South Dakota State University
Naasz, P. E. and Slyter, A. L., "Effect of Prostaglandin F2α Administered During Early Gestation in Ewes" (1985). South Dakota Sheep Field Day Proceedings and Research Reports, 1985. 4.