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The dietary requirement of young turkey poults (0–3 weeks of age) for linoleic acid was investigated. The first 2 experiments determined the influence of soybean extract and level of hydrogenated coconut fat (1–3%) on the response of poults to dietary linoleic acid (3%). The results showed a highly significant growth response to linoleic acid which was independent of the extract or the coconut fat. Feed/gain and mortality were markedly reduced by linoleic acid. In a third experiment, oleic acid (0.85%) or graded levels of linoleic acid (0, 0.25, 0.51, 1.02, 1.44, 2.09 and 4.25%) were fed in a casein-glucose basal diet. Weight gains and feed conversions were improved by linoleic acid supplements up to 1.02% of diet. Additions beyond this level gave no further improvement. Oleic acid had no effect on growth or feed conversion. In addition to growth and feed conversion, lipid composition of liver and heart also indicated that the minimum requirement for linoleic acid by young growing turkeys was 1% of the diet or 3.2% of the calories.
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Ketola et al. (1973) studied this question.
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