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Department of Biochemistry and Veterinary Science, College of Agriculture, University of Wisconsin, Madison
ABSTRACT
Conclusions: A practical ration which was used as a control ration apparently supplied abundant amounts of Cu, Zn, Co and Mn for Holstein cows, since dietary supplements of these trace minerals had little or no effect in changing the mean blood and liver concentrations in these animals.
Infection with Br. abortus in Holstein cows had no effect on the liver concentrations of Fe, Cu, Zn and Co and probably none on liver concentrations of Mn. The cattle which contracted induced Bang's disease had approximately the same concentrations of these five minerals in their livers as the cattle which were similarly exposed without becoming infected.
1 Published with the approval of the Director of the Wisconsin Agricultural Experiment Station. Supported in part by a grant from the Tennessee Eastman Corp., Kingsport, Tenn.
2 Present address: Dept. of Animal Husbandry, Iowa State College, Ames, Ia.
3 Present address: Dept. of Animal Sciences, Ohio Agricultural Experiment Station, Wooster, O.
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