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Effect of Nicotine on Nitrogen Retention and Fat Deposition in Pigs¹

Canada Department of Agriculture, Nappan, N.S.

Abstract

Four experiments using weight gain, carbon-nitrogen balance and carcass analysis techniques were conducted to determine the effects of the oral administration of nicotine on protein and fat deposition in pigs. Under conditions of restricted feeding, 70 to 80 kg. pigs fed levels of 12.5 to 250 mg. of nicotine sulfate per kg. of feed retained significantly more nitrogen than controls, but there was no apparent difference in fat deposition. Weanling pigs fed ad libitum until market weight on rations containing 5, 10 and 20 mg. of nicotine sulfate per kg. of feed showed significant improvements over controls in dressing percent, depth of back fat, area of loin eye, carcass length, carcass score, carcass protein and carcass fat. Greatest differences were observed at the 5-mg. per kg. level of nicotine in which there was a 17% increase in carcass protein:fat ratio.

¹ Contribution No. 156. Division of Animal and Poultry Science.

² The authors wish to acknowledge the assistance of the Canada Department of Agriculture, Production and Marketing Branch, Livestock Division, Moncton, New Brunswick, who kindly supervised the slaughter and grading of the pigs. The technical assistance of E. C. A. Johnson, R. M. Grant and their respective staffs is also gratefully acknowledged.