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Mating-Type Comparisons among Crossbred Beef Cattle for Preweaning Traits¹

Louisiana State University, Baton Rouge

Abstract

Preweaning data from 1,270 beef calves (straightbred, singlecross, backcross, and three-breed cross) were analyzed to descriptively classify the effects of years, breeds of sire, breeding of dam and the first-order interactions. Angus, Brahman, Brangus, Charolais and Hereford bulls were used on straightbred cows of the Angus, Brahman, Brangus and Hereford breeds and singlecross cows of the five breeds. Three separate analyses were conducted on selected portions of the data. Years, breeds of sire, mating type of calf, breeding of cow and breeding of calf were all found to be significant sources of variation in the collective analyses. Three-breed cross calves were generally found to be superior for all traits while breed-of-sire effects varied with each trait.

¹ Published with the approval of the Director of the Louisiana Agricultural Experiment Station. Cooperative with A.R.S., A.H.R.D., U.S.D.A. and the Southern Regional Beef Cattle Breeding Project, S–10.

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