Special Solvent Cottonseed Meal with and without a Vitamin B12 Supplement and Streptomycin as a Source of Protein for Pigs1
I. A. Dyer, A. E. Cullison and W. J. Hays
Summary and Conclusions
As high as 35% of the total ration was fed as “detoxified” cotton seedmeal to weanling pigs. No typical symptoms of gossypol toxicity occurred. However, dermatitis, depigmentation of the hair coat of the Duroc pigs, a slow rate of growth as well as a reduction in feed efficiency were encountered. These deficiency symptoms suggest that this “detoxified” cottonseed meal is deficient in factors essential for optimum growth and physiological well-being of the pig. Results of this test indicate that neither vitamin B12 nor streptomycin are the first limiting factors. When cottonseed meal and solvent soybean oil mealwere fed together (each comprising 50% of the protein supplement), the soybean oil meal apparently supplied some factor(s) in whichcottonseed meal was deficient.