Summary

Heat stress on dairy cows affects more than just the quantity of milk produced—warming temperatures also reduce the fat and protein content of the milk, new research finds. The study, published in Environmental Research Letters , identifies a new impact of climate change on milk production, with researchers finding that the economic losses from a decrease in fat and protein in milk equal those of well-established heat-related losses in yield. Farmers in the U.S. are compensated based on milk's fat and protein content.

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