1.61; p ≤ 0.001) than the high breast yield chickens [ 16 ], whereas the changes in animal behaviour according to genotype showed a significant trend in the percentage of standing animals (higher in high-breast chickens) and in the percentage of animals pecking the floor (higher in standard-breast chickens).
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Effect of Feed Restriction on the Behaviour and Welfare of Broiler Chickens.
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