J. Anim Sci.
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J. Anim Sci. 1972. 35:8-12.
© 1972 American Society of Animal Science
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Utility of Glutathione and Hemoglobin as Predictors of Calf Gain1

W. L. Brown2, T. B. Patterson3 and R. R. Shrode4

Auburn University, Auburn, Alabama 36830 and and the University of Tennessee, Knoxville 37901

Abstract

Blood samples from a total of 170 Angus, Hereford and crossbred calves were collected at approximately 110 days (preweaning observation) and 250 days (weaning observation) and analyzed chemically to determine the concentration of glutathione (GSH) and hemoglobin (Hb). These blood constituents were studied to determine the influence of certain factors on their content in the blood and to ascertain their value in predicting subsequent growth rate of the calf.

Analyses of the data indicated that GSH and Hb concentration, particularly at weaning, were related to previous performance of the calf and to change in weight of the calf's dam. The breed of calf-sire subclass to which a calf belonged had a highly significant effect on both GSH and Hb at each observation. Sex and age of calf were more important sources of variation in GSH and Hb at weaning than at preweaning.

Footnotes

1 This paper received the first place award in competition at the annual meeting of the Southern Section, American Society of Animal Science, Mobile, Ala., February 3, 1969.

2 Deceased November 25, 1970. Assistant Professor of Animal Science, University of Kentucky, Lexington.

3 Present address: Professor of Animal and Dairy Sciences, Auburn University, Auburn, Alabama.

4 Present address: Professor of Animal Husbandry, University of Tennessee, Knoxville.






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Copyright © 1972 by the American Society of Animal Science.