Table 2 Heat and cold stress categories of the mesonet comprehensive climate index (CCI)21.

From: Increasing frequency and spatial extent of cattle heat stress conditions in the Southern plains of the USA

Mesonet category

Impacts

CCI [oC]

Heat Danger

Animal deaths may exceed 5%

CCI > 40

Heat Caution

Production decreased by at least 20% Conception decreased to as low as 0%

30 < CCI ≤ 40

Comfortable

–

-10 < CCI ≤ 30

Cold Caution

Dry animal feed increased by 18–36%

-30 < CCI ≤ -10

Cold Danger

–

CCI ≤ -30

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