An experiment was conducted to determine the influence of added fat on the performance of large turkey hens. The addition of 4% animal fat to the diet significantly increased energy consumption and increased egg production. A numerical decrease in feed consumption and significant increase in egg production were obtained by increasing added fat from 4 to 8%. Added fat did not influence specific gravity or fertility and hatchability of fertile eggs.
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Harms et al. (1983) studied this question.
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