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Can rearing ability be improved by selection ?



Can rearing ability be improved by selection ?



Reproduction in sheep: 210-212



For 1 Dorset Horn flock and 2 Merino flocks, the repeatability of rearing performance (number of lambs weaned/number born) averaged 0.10. Rearing success at 2 yr of age was indicative of superior rearing performance at subsequent lambings. Differences in maternal pelvic dimensions partially accounted for repeatability in 2 flocks. In the 3rd flock (Merino), there was no apparent association between pelvic dimensions and rearing efficiency.

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