Abstract

Two field trials were conducted to compare the pasture and finishing performance of heifers spayed by the Kimberling-Rupp(K-R) technique or by flank spaying plus autografting a piece of ovarian tissue into the rumen wall (FS+A). In trial 1, neither spaying method resulted in gains of grazing heifers different from that of intake controls; however, FS+A heifers gained 5.1% faster than K-R spayed heifers. In trial 2, grazing gains of heifers spayed by the two techniques were similar. During the finishing phase, no performance difference was found among intact, K-R, or FS+A heifers in trial 1 or between K-R and FS+A heifers in trial 2.

Keywords: Cattlemen's Day, 1987, Kansas Agricultural Experiment Station contribution, no. 87-309-S, Report of progress (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service), 514, Beef, Performance, Heifers, Spayed

How to Cite:

Laudert, S., Kuhl, G. L. & Edwards, A., (1987) “Grazing and feedlot performance of heifers spayed by two methods”, Kansas Agricultural Experiment Station Research Reports 1(1), 77-79. doi: https://doi.org/10.4148/2378-5977.2407