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The study aims to examine the effects of selecting sheep based on residual feed intake (RFI) on various production and feeding behavior traits.

March 26, 2026animalOpen Access

Romane sheep divergently selected on residual feed intake: consequences on production and feeding behaviour traits

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The study aims to examine the effects of selecting sheep based on residual feed intake (RFI) on various production and feeding behavior traits.
Developed divergent lines based on RFI in Romane breed sheep.
Phenotyped 821 male lambs over five generations for production and feeding behavior traits.
Conducted tests under ad libitum low energy concentrate diet using automated feeders.
Efficient lambs consumed 9.36% less concentrate than less efficient lambs.
No significant differences in growth rates, but efficient rams produced more prolific ewes.
Efficient lambs spent less time feeding and had lower feeder visits.

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Divergent selection analyzes feeding behavior and production traits in lambs for breeding improvements.

Tortereau et al. (2026) studied this question.

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