Urea and Stilbestrol for Fattening Lambs1

Light, Merle R.; Dinusson, W. E.; Richard, R. M.; Bolin, D. W.

doi:10.2527/jas1956.152570x

Cited by 6 publications

(1 citation statement)

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“…Hale et al (1953) reported that increases in rates of gain were obtained when stilboestrol was fed at levels of 1 -5, 2-0 and 3 -0 microgrammes per lb. Groom (1955 and found no advantage in feeding stilboestrol to lambs at levels of from 0-1 to 2-0 mg. per head per day, whereas Light et al (1956) found that feeding 2-0 mg. per head per day produced increased gains. The same authors later reported an increase of 22% in rate of gain and little effect on the carcass from feeding 2-0 mg. per head per day (Hale et al, 1955).…”

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confidence: 96%

The effect of hormones on growth rate and carcass quality of fattening lambs and hoggets

Burgess

1960

Anim. Prod.

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The effects on average daily gain of a 12 mg. implant of diethylstilboestrol has been tested in male suckling lambs and in male hoggets. In both types stilboestrol produced some mammary stimulation. One case of rectal prolapse was encountered in the hoggets. In suckling lambs, treatment did not significantly increase rate of gain nor significantly affect any of several carcass characteristics studied. In hoggets, treatment produced a highly significant increase in rate of gain (33%), a highly significant increase in pelt weight and a highly significant decrease in the percentage of fat in the last rib section. It produced a non-significant increase in muscle and bone in the last rib section. Carcass score and dressing percentage were not significantly affected by treatment.The oral administration of L-thyroxine to suckling female lambs from 30–70 lb. live-weight did not significantly affect the rate of gain or the carcass characteristics studied.

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confidence: 96%