J. Anim Sci.
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J. Anim Sci. 1951. 10:916-921.
© 1951 American Society of Animal Science
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Thyrotropic-Hormone Deficiency in Homozygous Dwarf Beef Cattle1

F. D. Carroll, P. W. Gregory and W. C. Rollins

University of California2

Abstract

Physiological studies have been undertaken to determine why hereditarily conditioned beef cattle dwarfs fail to grow. Results were obtained which indicate the pituitary glands are deficient in thyrotropic hormone. This deficiency might largely account for the dwarfism. Additional data indicate that the growth hormone in the dwarf pituitary as well as gonad stimulating hormone are present.

Footnotes

1 This work was supported by the Kellogg fund for the application of genetics to farm mammals. The study was in cooperation with the Bureau of Animal Industry, U.S.D.A. and the state experiment stations under Western Regional project W-1 on beef cattle breeding research.

2 Davis, California.






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Copyright © 1951 by the American Society of Animal Science.