Author(s):

Ajaydeep Singh, Kawardeep Kour, Jonali Devi, D Chakraborty, Aditi Lal Koul and Mandeep Singh Azad

Abstract: The experiment was planned to study the influence of different seasons on physiological parameters of crossbred dairy cattle. Physiological variables like pulse rate (PR), rectal temperature (RT) and respiration rate (RR) of individual animals were measured and recorded at a week interval to observe the seasonal variation during different season which were divided into dry hot summer (DHS), humid hot summer (HHS) and winter (W). Data were analyzed by suitable statistical methods. Analysis of variance (ANOVA) showed that seasons had highly significant (P<0.01) effect of on all the physiological parameters under study. The mean values for PR, RT and RR were 58.500 ± 0.619, 38.617 ± 0.070 & 30.000 ± 0.516; 52.167 ± 0.601, 38.490 ± 0.020 & 27.667 ± 0.333 and 50.833 ± 0.477, 38.083 ± 0.060 & 25.000 ± 0.365, respectively for DHS, HHS and W seasons. During DHS all the physiological parameters of crossbred cattle increases significantly compared to other two seasons. Different managemental practices should be followed to combat the seasonal variations during different seasons to get optimum production.

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