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Journal of the Department of Agriculture, Western Australia, Series 4

Authors

R J. Suiter

Keywords

Sheep, Australian merino, Female fertility, Reproductive performance, Liveweight, Western Australia

First Page Number

223

Abstract

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.

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