The effect of ewe prelamb body condition on triplet lamb performance in a commercial flock
作者： Smith Pj , Smith Tr , Rendel Jm , Everett-Hincks Jm , Stevens Dr
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摘要: Triplet-bearing ewes (n = 999) were identified at pregnancy scanning (PS) and randomly assigned to two pasture feeding treatments through lamb weaning, FeedPlus (FP) Control (C). fed according theoretical requirements based on live weight a fetal number of three while C as for twinning ewes. Ewe body condition score (BCS) was similar FP PS (BCS 3). had higher BCS than set-stocking one month before the mean lambing date (PL, 2.9 ± 0.1 versus 2.6 0.1, P <0.001). Every unit increase in improved litter survival weaning by 0.33 0.17 lamb. An 0.45 0.18 (P <0.05). Litter increased with increasing PL (β 1.2 0.5 kg/unit BCS, Low ≤ 2.5) weaned 3.5 kg less medium ≥ 3) (82.4 1.1 85.9 1.4 kg, <0.05) when rearing triplets. Pre-lamb positive effect 1.3 0.6 growth rates from birth 13.5 6.0 g/day per The study highlighted importance ewe triplet performance.
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