University of Adelaide study finds potential lamb deaths from heat stress could increase from 2.1m to 3.3m per year under a 3C rise
Rising temperatures due to global heating will decrease lamb survival and fertility rates in Australia’s sheep flock resulting in industry-wide losses of up to $166m annually, new analysis predicts.An estimated 2.1 million potential lambs are currently lost annually due to heat stress, the study said. If temperatures were to rise by 3C, that number would rise to 3.3 million.
“When it’s hotter ewes have fewer lambs,” Van Wettere said. “Then there is the effect of heat during pregnancy that results in smaller lambs which are less likely to survive.” The director of the South Australian Drought Hub, Stephen Lee, said feed supplements, selective breeding and more shade cover would allow sheep to adapt to a warming climate.
“All of us in the farming sector need to reduce our carbon footprint so we can protect our food supply and the viability of our businesses in the long term,” Collard said.
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