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Effect of Epinephrine on Nitrogen and Fat Deposition of Pigs¹

Canada Department of Agriculture, Nappan, N. S.

Abstract

Six experiments using growth, carbon-nitrogen balance and carcass analysis techniques were conducted to determine the effects of subcutaneous injections of epinephrine in oil on protein and fat deposition of pigs under equalized restricted feeding. Pigs often refused to eat for several hours after the injections of high levels of epinephrine but older pigs were more tolerant to the same dosage per kg. of body weight than younger pigs. Daily injections of 0.15 mg. per kg. of body weight of epinephrine in 65 kg. pigs resulted in significant increases in growth rate and nitrogen retention. There was also a significant decrease in urine volume, a slight, but not significant, decrease in carbon dioxide production and no appreciable change in fat deposition. Daily injections of 0.20 to 0.0625 mg. per kg. of epinephrine in 2 to 8-week old pigs increased the percentage of carcass protein but decreased growth rate and fat deposition.

¹ Contribution No. 142. Division of Animal and Poultry Science, Research Branch, Canada Department of Agriculture, Nappan, N. S.