A number of alternative equations are available for predicting daily feed intake of the laying pullet. Multiple regressions on body weight, weight gain and egg-mass output of food-consumption showed a correlation with observed feed-intake of 0.82 - 0 90 (Mc DONALD 1977).

BENTSEN (1980) indicated that 10-20 % of variance in feed efficiency between lines remains unexplained.

More than 50 % of the daily ME intake is used for maintenance requirement. Therefore it is of practical importance to investigate if residual variance in feed-consumption can be explained by genetic differences in energy metabolism.

K Damme, H Eichinger, H Willeke, F. Pirchner

Proceedings of the World Congress on Genetics Applied to Livestock Production, Volume 8. Symposia (2), , 835-840, 1982
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