beef cattle, breeding system, produciton efficiency
Preliminary results are presented on production efficiency for a comparison of two-breed rotational crossbreeding to the terminal phase of a rotational-terminal combination system with Charolais as the terminal sire breed. The breeding system comparisons were made within each of three types of dam: Simmental x Hereford, Angus x Hereford, and Tarentaise x Hereford. The two breeding systems had similar average values for dam size, condition score, and feed ME through weaning. Results indicate an increase for terminal matings compared to rotational matings in terms of weaning weight and efficiency ratio (calf weaning weight/dam and calf feed ME) within the Angus x Hereford group, while the effect of breeding system was nonsignificant within the other two dam types.
Number of Pages
South Dakota State University
Copyright © 1992 South Dakota State University.
Marshall, D. M., "Breeding System Effects on Production Efficiency Through Weaning-Preliminary Results" (1992). South Dakota Beef Report, 1992. 7.