Introduction and evaluation of Romosinuano in the U.S.A.
In the warm regions of the U.S.A., adapted breeds of cattle are primarily limited to Bos indicus (Zebu), mainly American Brahman, and to breeds developed by crossing with Brahman. Some characteristics of purebred Brahman cattle that have been criticized include reproductive and feedlot performance, carcass quality and meat tenderness, temperament, and calf survivability. Therefore, the major niche for Brahman cattle in the U.S.A. has been in crossbreeding systems that combine the heat tolerance of the Brahman with the desirable reproductive and carcass traits of temperate Bos taurus breeds. The Romosinuano is a tropically adapted, criollo beef breed native to Colombia. The breed derived its name from its origin in the Sinu river region (sinuano) of northern Colombia and its polled (romo) character. Romosinuanos are purported to be highly fertile, and are noted for their longevity, docile temperament, and combining ability with Bos indicus. The long term objectives in our evaluation of the Romosinuano are to investigate its growth, reproductive performance, and carcass quality. Short term objectives have been to determine the effect of breed of recipient dam and estrous synchronization treatment on pregnancy and preweaning performance of Romosinuano embryo transfer calves, to evaluate postweaning growth and reproductive development in bulls through 20 months of age, to evaluate postweaning growth, to measure heat tolerance, and to determine age and body weight at puberty in heifers raised in central Florida.
| Main Authors: | , , , , , |
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| Format: | Digital revista |
| Language: | spa |
| Published: |
Asociacion Latinoamericana de Produccion Animal
2005
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| Online Access: | https://ojs.alpa.uy/index.php/ojs_files/article/view/223 |
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| Summary: | In the warm regions of the U.S.A., adapted breeds of cattle are primarily limited to Bos indicus (Zebu), mainly American Brahman, and to breeds developed by crossing with Brahman. Some characteristics of purebred Brahman cattle that have been criticized include reproductive and feedlot performance, carcass quality and meat tenderness, temperament, and calf survivability. Therefore, the major niche for Brahman cattle in the U.S.A. has been in crossbreeding systems that combine the heat tolerance of the Brahman with the desirable reproductive and carcass traits of temperate Bos taurus breeds. The Romosinuano is a tropically adapted, criollo beef breed native to Colombia. The breed derived its name from its origin in the Sinu river region (sinuano) of northern Colombia and its polled (romo) character. Romosinuanos are purported to be highly fertile, and are noted for their longevity, docile temperament, and combining ability with Bos indicus. The long term objectives in our evaluation of the Romosinuano are to investigate its growth, reproductive performance, and carcass quality. Short term objectives have been to determine the effect of breed of recipient dam and estrous synchronization treatment on pregnancy and preweaning performance of Romosinuano embryo transfer calves, to evaluate postweaning growth and reproductive development in bulls through 20 months of age, to evaluate postweaning growth, to measure heat tolerance, and to determine age and body weight at puberty in heifers raised in central Florida. |
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