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Effects of diethylstilbestrol implants on the performance of wether lambs under various schemes of management and nutrition


, : Effects of diethylstilbestrol implants on the performance of wether lambs under various schemes of management and nutrition. Journal of Animal Science 25(1): 161-166

The absence of a diethylstilbestrol (DES) effect and its lack of interaction with dietary levels of total digestible nutrients (TDK) and crude protein appeared to result from low intakes of TDN. The low TDN intakes coincided with feeding in individual stalls for restricted periods twice daily and without access to water during feeding. Reduced dietary levels of roughage in combination with hammering and pelleting of the diets resulted in an average increase of 9% in TDN consumption and 92% in body weight gains. This was associated with significantly improved effects of DES implants in higher body weight gains, as well as lowered commercial carcass grades. The effect of group feeding as compared to individual feeding was a significantly increased intake of feed and TDN, significantly greater gain and dressing per cent, as well as marked increases in carcass grades. The above-mentioned effects of DES implants were significantly greater under group feeding than individual feeding. These studies also failed to show that estrogenic activity of alfalfa may interact with the effects of DES implants in fattening lambs.

US$29.90

PMID: 5905499


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