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The Possibility of Increasing Milk and Butterfat Production by the Administration of Drugs¹

Dairy Husbandry Section, Iowa Station, Ames, Iowa

ABSTRACT

Résumé:

1. The action of galactagogues on the production of cows has received little experimental study.
   
2. The results obtained from the use of galactagogues with dairy cattle and even laboratory animals are very conflicting.
   
3. The drugs used in the present study could not be relied on to induce an increase in the production of milk or in the yield or percentage of butterfat.
   
4. The most noted changes were decreases in the yield and percentage of butterfat brought about by pituitrin and castor oil.
   
5. Wide individual variations in their response to the drugs were shown by the cows.
   

¹ A paper presented at the annual meeting of the American Society of Animal Production, Ames, Iowa, December, 1917.