Abstract
Several tests were conducted to determine the chemical composition of wild brown mustard seed meal, to assess the effectiveness of FeSO4 treatment as a method of detoxifying this meal, and to study amino acid deficiencies of the detoxified meal for growing chicks. The FeSO4 treatment of mustard seed meal was found to be an effective method of detoxification of the meal for use in starting chick rations. It reduced the oxazolidinethione content of the meal by about 88% and the isothiocyanate content by 74%. The treatment of the meal resulted in a significant improvement in body weight and feed efficiency of growing chicks. Treated mustard seed meal diets were supplemented with arginine, lysine, phenylalanine and valine which were found by calculation to be the most limiting amino acids. These amino acid studies revealed that arginine is the only limiting amino acid of the four when treated mustard seed meal is incorporated at the rate of 20% of the ration with soybean meal being the only other source of protein.
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