Abstract
Sexually immature pullets were treated for 10 days with testosterone propionate (TST) in doses of hormone ranging from 0.25 to 5.0 mgm. per day. TST increased live weight gains, the effect being significant for the highest dosage; TST also increased oviduct weight. Both these results are in agreement with those of previous workers. TST did not affect significantly the net liver weight or the liver weight per kgm. live weight. Liver deoxyribonucleic acid phosphorus (DNAP) per kgm. live weight was not affected by lower dosage levels, but was slightly and significantly increased by higher dosage levels. Liver pentose nucleic acid phosphorus (RNAP) was affected in the same way as liver DNAP; and hence TST had no effect on the ratio RNAP/DNAP in the liver. TST depressed kidney weight, thus confirming previous observations. TST also depressed kidney DNAP and increased kidney RNAP, thereby increasing the ratio RNAP/DNAP in kidney to a marked extent. Spleen weight was depressed by TST, though the effect did not attain statistical significance.
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