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Journal of Dairy Science Vol. 40 No. 11 1405-1415
© 1957 by American Dairy Science Association ®
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Heat Tolerances of Jersey and Sindhi-Jersey Crossbreds in Louisiana and Maryland

M. W. Schein1, R. E. McDowell2, D. H. K. Lee3 and C. E. Hyde4

Louisiana Agricultural Experiment Station, Jeanerette and Dairy Husbandry Research Branch, USDA, Beltsville, Md.

ABSTRACT

In an effort to utilize to greater advantage the dairy potentialities of the Gulf Coast Region of the United States, several southern Agricultural Experimental Stations, in cooperation with the Dairy Husbandry Research Branch of the USDA, have instituted experiments to determine the possibility of increasing the climatic adaptability of dairy cattle maintained there. One phase of the program has been carried out at the Iberia Livestock Experiment Station, Jeanerette, Louisiana, in cooperation with the Louisiana Agricultural Experiment Station; it involved the cross-breeding of Red Sindhi cattle (a milking strain of Zebu, native to India and Pakistan) with purebred Jerseys, in hopes of increasing the productivity of the Jersey progeny by adding some of the heat tolerance inherent in Indian cattle.

It is recognized that Zebu (Bos indicus) cattle are physiologically better able to withstand hot climates than are European-evolved (B. taurus) cattle. Differences between the two types of cattle are clearly evidenced by their responses to a variety of test situations.

FOOTNOTES

1 Louisiana Agricultural Experiment Station. Present address: Pennsylvania State University, University Park.

2 Dairy Husbandry Research Branch, Beltsville, Maryland.

3 Johns Hopkins University. Present address: Quartermaster Corps, U. S. Army.

4 Iberia Livestock Experiment Station, Jeanerette, Louisiana.






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Copyright © 1957 by the American Dairy Science Association ®.