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Evaluation of Hydrolyzed Hog Hair Meal as a Protein Source for Swine

Virginia Polytechnic Institute and State University, Blacksburg 24061 and Holland, Virginia 23391

Abstract

Four trials using 285 crossbred growing pigs were conducted to evaluate hydrolyzed hog hair (HHH) meal as a protein source for swine. In diets with 0 to 8% added HHH meal, it was found that 2 to 3% HHH meal could be substituted for soybean meal without depressing gain and gain/feed, if the diets were formulated on a digestible protein basis. Feed intake was not depressed until the diets contained more than 6% HHH meal. Carcass characteristics obtained in one trial were not affected by the substitution of HHH meal in the diet on a digestible protein basis. Pigs fed the higher level protein diets had larger loin eye areas than pigs fed the low protein level diet. The failure to get a response to higher levels of HHH meal suggests that amino acid deficiencies or imbalances were occurring, or that the amino acids were not as available in HHH meal as in soybean meal and corn.

¹ Department of Animal Science and Tidewater Research Station.

² This work was supported in part by a grant from ITT Gwaltney, Inc., Smithfield, Va. Appreciation is expressed to John Blaha and Charlie Babb for caring for animals; to Peter Gati for laboratory analyses; to Dr. C. Y. Kramer for statistical analysis and to J. H. Carter, Jr. for taking carcass measurements.