Table 1

Classification and symptoms of THI

THI	Classification of HS	Symptoms
< 72	None	Optimum productive and reproductive performance
72-78	Mild	Dairy cows seek for shade, increase in respiration rate and dilation of blood vessels
79-88	Moderate	Increase in respiration rate and saliva secretion. Reduction in feed intake and water consumption. Body temperature is increased and reproductive performances are severely affected in cattle
89-98	Severe	There is rapid increase in respiration and excessive saliva production. The reproductive performances in animals are significantly decreased

Journal of Animal Reproduction and Biotechnology 2022;37:266-75 https://doi.org/10.12750/JARB.37.4.266