J. Anim Sci.
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J. Anim Sci. 1954. 13:694-705.
© 1954 American Society of Animal Science
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The Effect of Certain Mineral Supplements on Lambs Infected with the Stomach Worm (Haemonchus Contortus)1

R. M. Richard2, R. F. Shumard3, A. L. Pope, P. H. Phillips, C. A. Herrick and G. Bohstedt4

University of Wisconsin,5

Abstract

Experiments were conducted to determine the effect of mineral supplementation on lambs infected with stomach worms (Haemonchus contortus).The results show that the greatest resistance of lambs to infection was obtained by feeding cobalt and steamed bone meal in combination. The effect produced by cobalt supplementation may be due, at least in part, to an increased rate of synthesis of vitamin B12 in the rumen and its increased availability to the host. The exact mechanism by which steamed bone meal functions to increase resistance to stomach worm infection is not clear. It does appear, however, that when lambs are subjected to the severe strain of heavy parasitic infection, the requirements for factors contained in steamed bone meal are considerably increased.

Footnotes

1 Published with the approval of the Director of the Wisconsin Agricultural Experiment Station, Madison. Supported in part by the Research Committee of the Graduate School with funds from the Wisconsin Alumni Research Foundation.

2 Present address: Animal Husbandry Dept., North Dakota Agricultural College, Fargo, N. D.

3 Present address: Zoology Dept., North Dakota Agricultural College, Fargo, N. D.

4 The authors gratefully acknowledge the assistance of W.G. Hoekstra in certain phases of this work.

5 Departments of Animal Husbandry, Biochemistry, and Veterinary Science, Madison, Wisconsin.






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Copyright © 1954 by the American Society of Animal Science.