Severe diarrhea in newborn calves ( calf neonatal diarrhea) is one of the most important diseases of calves, resulting in considerable economical losses to producers. Recent studies have indicated that the cause of calf diarrhea involves an interplay between enteropathogenic bacteria and viruses (enteropathogenic E. coli , rota and corona virus - like viruses ) , the immunity of the calf and the effects of environment. -The importance of colostral immunity in preventing c a l f scours i s a lso well es tabl ished. The objective of this study was to compare four breed groups of beef cattle for their susceptibility to calf scours under range condition. I f breed differences exist , they could be important in reducing the incidence of the disease in newborn calves by r a i s in g the more re s is tan t breed groups in the infected regions. The influence of age of dam and sex of calf on the incidence of calf scours was a lso examined.
Proceedings of the World Congress on Genetics Applied to Livestock Production, Volume 7. Symposia (1), , 344-350, 1982
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