beef heifers, synchronization, melengestrol acetate, prostaglandin
Crossbred beef heifers were used to compare conception rate when synchronizing estrus with melengestrol acetate (MGA) and prostaglandin or two injections of prostaglandin. Melengestrol acetate was fed to one group of heifers for 16 days and prostaglandin injected 16 days after MGA removal or two injections of prostaglandin given 11 days apart in the other group. The MGA group had a higher conception rate (Pc.05) to timed Al, but there was no difference between the two groups for the breeding season. It appears MGA with prostaglandin results in increased conception to a timed insemination.
Number of Pages
South Dakota State University
Copyright © 1989 South Dakota State University
Miller, H. L.; Wagner, J. J.; and Hanson, R. L., "Comparison of Melengestrol Acetate and Prostaglandin with Two Injections of Prostaglandin for Estrous Synchronization in Beef Heifers" (1989). South Dakota Beef Report, 1989. 13.