Sheep, Australian merino, Female fertility, Reproductive performance, Liveweight, Western Australia
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Analysis of lambing trials with Merino ewes has shown a highly significant association between pre-mating liveweight and lambing performance.
With May-June lambing ewes there was a 2.9 per cent, lambing increase for every extra 10 lb. liveweight; for July-August- September lambing ewes there was a 6.9 per cent, increase for every 10 lb. liveweight increase.
With the May-June lambing there was a critical weight below which twinning was negligible.
Suiter, R J.
"High pre-mating liveweights improve the lambing performance of merino ewes,"
Journal of the Department of Agriculture, Western Australia, Series 4: Vol. 11
, Article 5.
Available at: https://researchlibrary.agric.wa.gov.au/journal_agriculture4/vol11/iss10/5