| Autor: |
Hale, W. H., Sherman, W. C., Appel, P. P., Reynolds, W. M., Luther, H. G. |
| Zdroj: |
Journal of Animal Science; May 1959, Vol. 18 Issue: 2 p710-717, 8p |
| Abstrakt: |
Six lamb feeding experiments were conducted to determine the effect on growth, feed efficiency and carcass quality of low-level diethylstilbestrol (stilbestrol) implantation, oral supplementation with the tranquilizer, hydroxyzine, and oral supplementation with the antibiotic, oxytetracycline. During the experimental period all lambs were self-fed a pelleted ration.In six treatment groups, lambs implanted with 3 mg. of stilbestrol outgained controls by an average of 28% with a 19% average improvement in feed efficiency. There was some reduction in dressing percent and carcass grade. Implantation had no effect upon maturity as judged by break joints. The 3-mg. implant appeared to be practical in effecting an economical weight gain increase in feeder lambs. The tranquilizer, hydroxyzine, fed at the level of 1.2–2.0 gm. per ton of ration in three treatment groups increased gain by 29% with an increase in dressing percent and grade. The antibiotic, oxytetracycline, increased rate of gain in four of five trials by an average of 13% with a small increase in dressing percent but no effect upon grade. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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