Protein and roughage supplements for pregnant and lactating ewes fed wheat for survival
1985
Watson, M.J. (Victorian Dept. of Agriculture and Rural Affairs, Werribee (Australia). Animal Research Inst.) | Egan, J.K. (Victorian Dept. of Agriculture and Rural Affairs, Melbourne (Australia))
Soybean meal, meat and bone meal, and lupins, provided protein. Safflower meal provided protein and roughage. Barley straw provided roughage. Ewes received vitamin A and mineral supplementation, including Ca, Na, S, Mg, K, Cu, Co, I and Se. There were metabolic disorders in late pregnancy, particularly hypocalcaemia. Lamb birth weight was increased with supplements of protein or roughage which had not been pelleted. A nutritional myopathy associated with vitamin E deficiency resulted in the sudden death of 5 percent of the lambs born alive. On wheat alone, ewe liveweight increased after lambing but lamb growth rate was inadequate for survival. With added protein, lamb growth rates were initially higher than with added roughage, but this difference was not maintained over the 6-week period. With added protein and roughage, lamb growth rate tended to be higher and ewes lost more liveweight.
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