Effect of Exposure to Sun and Exercise on Heat Tolerance Coefficient in Murrah Buffalo Calves

Abstract

IN continuation of our previous work¹, this experiment was designed to find out the effect of exposure to sun and exercise on heat tolerance coefficient. Eight Murrah buffalo calves, varying between 8 and 12 months of age, constituted the experimental material. These calves were randomly divided into two groups of four each. One group was exposed to sun, while the other ran at a speed of four miles per hour as recorded by the distance covered in a given time. The calves in each group acted as their own control. These experiments were conducted at 12 noon for half an hour on six consecutive hottest days in the month of May. The atmospheric temperature during test hours ranged between 92 and 105° F. and relative humidity between 28 and 47 per cent. The conditions of management of these calves has been given in detail².