New research from Charles Sturt University explores the challenges sheep producers face as dry conditions put pressure on pastures, feed supplies and farm budgets.
A new four-part podcast series shares the results of trials conducted in the NSW Riverina, examining four questions sheep producers ask during drought: Do supplements improve ewe performance? What feed additives are worth using in feedlots? How should ewes be joined in confinement? Can ewes successfully lamb in confinement?
In a trial involving 900 ewes, researchers found that the seaweed supplement Algimun did not improve pregnancy rates, foetal numbers or lamb survival compared with standard mineral supplements or no supplements.
The results were different in feedlots. Researchers found that lambs fed grain with lick supplements gained six to seven kilograms more liveweight over 70 days than lambs fed grain with only lime and salt. For producers finishing lambs during summer, those extra kilograms can make a significant difference to profitability.
Trials looking at joining ewes in confinement also delivered clear guidance. Adding more roughage to rations increased feed costs but did not improve fertility. However, a short, well-timed lupin flush increased foetal numbers by seven per cent.
Researchers also examined whether ewes can successfully lamb in confinement. Single-bearing ewes achieved lamb survival rates similar to those lambing in paddocks.
All four episodes of Sheep Confinement During Drought podcast can be found here.
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