Heat tolerance ability and its variability in different breeds of goat with reference to pulse rate

Thakare P.D., Sirothia A.R and Sawarkar A.R

The pulse rates were recorded a 76.43+0.602, 79.26+1.121, 80.80 + 0.506, 76.81+0.197 and 72.60 + 0.43 beats / minute for Barbari, Jamnapari, Sirohi, Osmanabadi and Local breeds of goat respectively. Negative correlation observed in pulse rate in Osmanabadi and Local goat breed. However significant positive correlation between respiration rate and pulse rate was observed in Jamnapari (0.670) but it was positive and non-significant in Barbari and Sirohi. The relationship between relative humidity and pulse rate was found to be non-significant except Local where it was recorded to be highly significant. The correlation coefficient between pulse rate and environment temperature positively non-significant in Sirohi, Osmanabadi and Local and positively significant in Barbari and Jamnapari breeds of goat. Among five breeds, the ranking of animals according to their heat tolerance mechanism obtained by both the methods showed marked differences. The local goat breed was found to be readily adaptable in Nagpur climate and environment and shown by their lower respiration, pulse rate and Benezera Coefficient of Adaptability which was followed by Osmanabadi and Sirohi. Thus selection of goat with high tolerance to thermal stress is of primary importance as basis for the future development of goat industry in Vidarbha (Maharashtra).

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