Mid-pregnancy shearing of autumn-lambing ewes in New Zealand

摘要: The aim of the present experiment was to ascertain if mid-pregnancy shearing autumn-lambing ewes would increase birthweight lambs. Following pregnancy diagnosis, 123 pregnant were randomly allocated one two treatment groups. One group shorn on day 74 (P74) and both groups managed as mob. Ewe liveweights recorded 53 (P53), 141 (P141), 45 (L45) 75 days (L75) after start lambing period. Lamb within first 24 h birth, L45 L75. In addition, girth circumference, crown–rump length, fore leg length rear measured birth. liveweight, inclusive removed fleece, did not differ between at P53, P141, or Lambs born heavier birth compared with lambs unshorn (P < 0.05; 4.56 v. 4.24, respectively), but Girth circumference (P < 0.01), (P < 0.05) (P < 0.01) also longer in ewes. It concluded that summer–autumn period can be used a means increasing lamb birthweight.