The Effect of Processing Method and Certain Supplements on a Lysine Deficiency in Cottonseed Meal for Chicks

IN THE processing of cottonseed meal, the preservation of or the improvement of protein quality and also detoxification has long been an important factor. Milligan and Bird (1951), have reviewed the literature on this subject. Among the variables tested in processing cottonseed meat, the temperature of processing had the greatest effect on the quality of the protein (Milligan, Machlin, Bird and Heywang, 1951). Richardson and Blaylock (1950) and Blaylock and Richardson (1950) showed that a cottonseed meal of low gossypol content, when supplemented with both lysine and vitamin B12 concentrate, was satisfactory as the sole source of protein for the growth of chicks to 6 weeks of age. Almquist (1945), Blaylock and Richardson (1950) reported that soybean oil meal could be used to correct the lysine deficiency in cottonseed meal. German and Couch (1951) suggested that lysine was probably made more available to chicks when properly heated. Milligan and Bird …