Texas A&M University (TAMU) ANSC 305 Animal Breeding Exam 1 Practice

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Beefmaster is a Bos indicus influenced American Composite Breed developed at Lasater Ranch in South Texas. What is its genetic composition?

1/2 Bos indicus, 1/4 Shorthorn, 1/4 Hereford

Beefmaster is defined by a three-breed composite makeup designed to blend the strengths of Bos indicus with taurine cattle. The standard composition is 50% Bos indicus (Brahman), 25% Hereford, and 25% Shorthorn. This mix gives heat tolerance and parasite resistance from the Bos indicus side while preserving desirable maternal and carcass traits from Hereford and Shorthorn. Also, the exact order of listing these components doesn’t change the actual proportions. Proportions like 3/4 Bos indicus or 1/3 each don’t match Beefmaster’s established makeup.

1/2 Bos indicus, 1/4 Hereford, 1/4 Shorthorn

3/4 Bos indicus, 1/4 Shorthorn

1/3 Bos indicus, 1/3 Shorthorn, 1/3 Hereford