Effects of MGA and PGF on estrus induction and synchronization in cows and heifers (1986)

Authors

G.W. Boyd
D.J. Patterson
L.R. Corah
J.R. Brethour

Keywords

Cattlemen's Day, 1986; Kansas Agricultural Experiment Station contribution; no. 86-320-S; Report of progress (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service); 494; Beef; MGA; PGF; Estrus; Synchronization

Abstract

Three trials were conducted in the spring of 1985 to evaluate the effectiveness of MGA feeding and Prostaglandin (PGF) injection on estrus induction and synchronization. Trials 1 and 2 were both done on a Kansas ranch and involved 70 heifers and 86 cows, respectively. In both trials, all cycling and non-cycling females were fed MGA (7 days in trial 1, 9 days in trial 2) and half of the cows and heifers received a PGF injection. The estrus response was higher (P.05). The MGA treatment also initiated cyclicity in prepuberal females of both crosses.

Recommended Citation

Boyd, G.W.; Patterson, D.J.; Corah, L.R.; and Brethour, J.R. (1986) "Effects of MGA and PGF on estrus induction and synchronization in cows and heifers (1986)," Kansas Agricultural Experiment Station Research Reports: Vol. 0: Iss. 1. https://doi.org/10.4148/2378-5977.2395