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Individual production parameters of a population of Single Comb White Leghorn hens (SCWL) were recorded for 48 weeks. At this time six efficient and six inefficient birds were selected on the basis of feed efficiency. These groups had similar mean body weights, egg weight, and egg production. Individual bird feather weight and comb and wattle surface area were recorded. There was a significant (P<.01) correlation only between feather weight and feed efficiency. Regression analysis showed feed efficiency to deteriorate .04 per one-gram reduction in feather weight. The role of feather cover in relation to maintaining optimum performance is discussed.
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Leeson et al. (1978) studied this question.
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