The Effects of Hexoestrol Implantation On Carcass Analysis, Energy Balance and Nitrogen Retention of Cattle

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Date
1970
Authors
Rogerson A.
Ledger H.P
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Abstract
Seven pairs of identical twin steers were used to study the effects of a 60 mg. hexoestrol implant on carbon-nitrogen balance, heat production, live-weight gain and carcass characteristics. The rations given ranged from near maintenance to one giving a probable liveweight gain of around 1 kg. Per day. Losses of energy in faeces, urine and in combustible gases were not materially affected by implantation. Water consumption was slightly greater in the treated animals. Heat production, when related to metabolic weight, was consistently higher for the implanted animals. Nitrogen lost in urine was greater for control animals and amounted to about 0.05g nitrogen per 100g food ingested. The maximum benefit from hexoestrol implantation was derived by animals on moderate protein intake but consuming a ration high in available energy
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East African Agricultural And Forestry Journal, XXXVI (2), p. 177-181
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