author(s)
Asha Lata Murmu, RK Verma, Shiv Kumar Yadav, Sasmita Barik, SK Maurya and Sanjay Kumar

abstract
Despite having well-developed mechanisms of thermoregulation, animals do not maintain strict homeothermy under extreme climatic conditions. As a result, animals develop various adaptive mechanisms that enable them to survive under those conditions of extreme heat or extreme cold. The study was conducted on twelve healthy Black Bengal Goats to determine the effect of seasonal variations on biochemical profiles during autumn and winter. Blood samples collected from the jugular vein at fortnightly interval used for biochemical analysis. Among the biochemical constituents the mean concentration of glucose (mg/dl) was found to be significantly (p<0.05) higher during winter than the autumn season and observed to be inversely proportional to the THI. The estimated serum total protein non-significantly differed and was directly proportional to the THI. The serum mineral profile studied in Black Bengal Goat showed significant (p<0.05) variation in between the seasons. The serum calcium (mg/dl), inorganic phosphorous (mg/dl) and magnesium level were significantly (p<0.05) lowered during winter than autumn and were found to be directly proportional to the THI. The study revealed that some of the parameters studied were visibly drifted from normal values as a result of climate stress during the winter season.