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Journal of Dairy Science Vol. 33 No. 11 851-852
© 1950 by American Dairy Science Association ®
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Comparative Fertility of Diluted Bull Semen Treated with Calcium Chloride Complex Streptomycin or Dihydro Streptomycin Sulfate1,2

H. L. Easterbrooks, P. Heller3, W. N. Plastridge and E. L. Jungherr

Storrs (Connecticut) Agricultural Experiment Station, Department of Animal Diseases, University of Connecticut, Storrs

ABSTRACT

Five hundred and eighty cows were inseminated with diluted semen containing 500 units of dihydro streptomycin sulfate per milliliter and 586 cows with split portions of the same semen containing 500 units of streptomycin calcium chloride complex. No statistical significance was associated with the 3.2 per cent non-returns increase for the dihydro streptomycin sulfate-treated group.

Streptomycin calcium chloride complex was found to be incompatible with phosphate buffers.

FOOTNOTES

1 Streptomycin used in this investigation was supplied by Merck and Co., Inc., Rahway, N. J.

2 Supported in part by funds received under project NE1 of the Research and Marketing Act of 1946.

3 Manager, Connecticut Artificial Breeding Association.






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