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New selection objectives in poultry breeding programmes

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Authors: J. L. Campo,M. García Gil
Issue: 94A-3 (244-249)
Topic: Animal Production
Keywords: tonic immobility, leucocyte ratio, shell quality, yolk cholesterol, residual consumption

Results from three groups of experiments for behavioural traits, quality products, and feed efficiency are reviewed. The two first groups have been realised with laying hens: tonic immobility duration, heterophil to lymphocyte ratio, shell strength, shell colour, and yolk cholesterol content. Feed efficiency has been analysed in Tribolium, considering two experiments of selection for residual feed consumption.

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