PREVIOUS reports from this Division have described the use of acidulated soybean-oil soapstock (Bornstein and Lipstein, 1961) and of acidulated sun-flower-oil soapstock (Bornstein and Lipstein, 1963) in chick rations. These fat supplements were found to compare with tallow in terms of chick growth and feed/gain ratio. Cottonseed-oil soapstock has been used commercially in the United States as fatty acid methyl esters, but regular acidulated cottonseed-oil soapstock (ACS) has not been accepted for general use because of the possible toxicity of gossypol. An extensive literature exists on the use of cottonseed meal and on its gossypol content, but little information is available on ACS or its gossypol. Couch (1953), Naber and Morgan (1957) and Combs (1961) mention ACS in a rather incidental manner, whereas to the best of our knowledge only Curtin and Raper (1956) investigated it systematically in broilers, and Pepper et al. (1962) in laying hens. The former workers…
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Lipstein et al. (1964) studied this question.
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