Effect of trenbolone acetate combined with oestradiol -17β on the response of steers to changes in dietary protein

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Abstract
Hormonal anabolic compounds are used in certain countries to improve the efficiency of meat production from ruminant animals. The combination of trenbolone acetate (TBA) and oestradiol-17β (OE2) has been shown to be particularly effective in stimulating growth in cattle (e.g. Galbraith & Topps, 1981). These improvements in growth have been associated with increases in nitrogen retention and changes in protein metabolism within the animal. The present study therefore investigated the effect of implantation with TBA + OE2 on the growth and metabolic response of growing steers to alterations in protein nutrition.