Body weight, egg weight and egg production

Manson, J.M.

Egg formation and production: 115-137

1972


Accession: 000031516

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Abstract
Genetical interrelationships of biological traits in the hen, recognised as being the chief determinants of profit in strains kept for the production of eggs for domestic consumption, are reviewed. Attention is drawn to the genetic factors that tend to impede progress in overall performance. Consideration is also given to the prospect of increasing egg number by conventional within- strain selection and to the scope for other improvements in the efficiency of the commercial layer through selective breeding.