Lamb mortality and growth to weaning in commercial Merino [sheep] flocks in Western Australia
1992
Kelly, R.W. (Western Australian Dept. of Agriculture, South Perth. Sheep and Wool Branch)
The condition of ewes and lambs were studied in 18 farm flocks of 4-tooth ewes over the period from 2 to 4 weeks pre-joining until 12 weeks post-lambing. Among the measurements were average ewe liveweights and weight changes, condition score, number of dry ewes, lambs born and alive at marking, growth to marking. It is concluded that liveweight of the ewe in mid-pregnancy, representing starting liveweight and weight change, is the most important single and practical criterion to use in guidance of nutritional management.
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