Factors influencing first-service conception and overall pregnancy rates in commercial beef heifers

Authors

S.D. Utter
P.L. Houghton
L.R. Corah
D.D. Simms
M.F. Spire
M.D. Butine

Keywords

Cattlemen's Day, 1994; Kansas Agricultural Experiment Station contribution; no. 94-373-S; Report of progress (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service); 704; Beef; Beef heifers; First-service conception; Pregnancy rates

Abstract

Commercial beef heifers (n=1863) from 16 different sources were used to evaluate the influence of management practices and biological traits on first-service conception and overall pregnancy rates. Frame score, initial weight, overall ADG, body condition score, reproductive tract score, source, AI technician, and AI sire significantly influenced first-service conception. Overall pregnancy rates were influenced by frame score, body weight, and ADG.

Recommended Citation

Utter, S.D.; Houghton, P.L.; Corah, L.R.; Simms, D.D.; Spire, M.F.; and Butine, M.D. (1994) "Factors influencing first-service conception and overall pregnancy rates in commercial beef heifers," Kansas Agricultural Experiment Station Research Reports: Vol. 0: Iss. 1. https://doi.org/10.4148/2378-5977.2075