VARIATIONS IN THE REACTION OF CHICKS TO DIFFERENT METHODS OF ADMINISTERING ANDROGENS1

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Abstract
Using White Leghorn cockerels, it was found that the relative effectiveness of oreton and oreton-B, as measured by comb growth, was the same whether injected subcut. or intraperit. Both were more efficient administered subcut., but comb growth was always greater with oreton-B. Androstenedione and de-hydroandrosterone were less effective than oreton or oreton-B. Androstenedione plus oreton-B was more effective than oreton plus oreton-B. Body weight was essentially the same in both control and injected chicks until after cessation of injs.; then controls became progressively heavier. Baby cockerels given oreton plus oreton-B for the first 5 days after hatching crowed on the 7th day. Birds given oreton-B alone but in an amt. equal to combined dosage of oreton plus oreton-B crowed on the 5th day of age.