Feeding trials with rations including ground black-eyed cowpeas for swine resulted in reduced consumption and utilization of feed as well as lower gains—but there was no evidence of toxicity. Twenty-four growing hogs with an initial weight of about 80 pounds were fed a control ration and rations containing 20 per cent and 50 per cent ground black-eyed cowpeas (Vigna sinensis) for an experimental period of 70 days. As the percentage of black-eyed peas increased, gain in weight decreased. The pigs on the ration containing 50 per cent black-eyed peas gained about 38 per cent less weight than the controls.

P. C. Enge, Extension Veterinarian, U.C. Davis, and A. W. Mitchell, Farm Advisor, Butte County, assisted with advice and help in planning and completing the study. D. R. Cordy, Professor of Veterinary Science, U.C. Davis, assisted with the histological studies. Cleaned black-eyed peas used in the feeding trials were supplied by Jasper S. Connell, Oroville, and West Los Angeles Milling Company, Durham.