نتایج جستجو برای: crossbred cattle
تعداد نتایج: 52906 فیلتر نتایج به سال:
The objective of this study was to characterize breeds representing diverse biological types for postweaning growth and carcass composition traits in terminal crossbred cattle. Postweaning growth and carcass traits were analyzed on 434 steers and 373 heifers obtained by mating F1 cows to Charolais sires. Maternal grandsires represented Hereford, Angus, and MARC III (1⁄4 Hereford, 1⁄4 Angus, 1⁄4...
Extension of beef cattle genetic evaluation procedures to multibreed data sets is proposed as a way to allow inclusion of crossbred animals into current analyses and to provide comparisons between purebred animals of different breeds. Previous papers dealing with multibreed BLUP have proposed sire or sire-maternal grandsire models. Because current models used in the beef industry are predominan...
Heat stress and dusty conditions are common challenges for cattle during the summer, and a typical method of alleviating these problems involves sprinkling cattle and pens with water. The effect of sprinkling water on the incidence of zoonotic pathogens has not been previously studied. Four pens of heifers (n = 41) were cooled using sprinklers, and four pens (n = 43) served as controls. Heifers...
Materials and Methods Haemoprotozoan infections are very common in cattle and cause devastating losses to the livestock industry and pose a major threat to the dairy industry throughout the world [1]. Most of the haemoprotozoan parasites are transmitted by ticks and is of great economic importance in Asia and has always been a formidable barrier to the survival of exotic and cross bred cattle i...
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