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Shep­par­ton max­i­mum THI fore­cast

Dairy cows feel the heat more than you re­alise. The Tem­per­a­ture Hu­mid­ity In­dex (THI), which ac­counts for tem­per­a­ture and hu­mid­ity, is a use­ful mea­sure of cow com­fort and risk of heat stress. • When THI > 72, cows be­gin to ex­pe­ri­ence

heat stress and in-calf rates are af­fected. • When THI > 78, cows’ milk pro­duc­tion is

se­ri­ously af­fected. • When THI > 82, very sig­nif­i­cant losses in milk pro­duc­tion are likely, and cows may show signs of se­vere heat stress. This THI fore­cast helps dairy farm­ers mon­i­tor the daily heat stress risk level and ad­just their cool­ing strate­gies to main­tain cow com­fort and pro­duc­tiv­ity.

Pro­vided by Dairy Aus­tralia’s Cool Cows pro­gram

For the lat­est four-day THI fore­cast for your lo­cal area and more in­for­ma­tion, visit­

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