The Influence of Ambient Temperature on Thyroid Activity, Erythrocytic Indices and Some Biochemical Parameters of Black Bengal Goats (Capra aegagrus hircus)

Abstract<br>India has a good number of Black Bengal goat populations, which has an significant role in the lives<br>of local goat rearers. The aim of the present study is to find out the effects of changing seasons on thyroid activity, erithrocytic indices and some biochemical parameters of Black Bengal goat (Capra aegagrus hircus) in the presently studied agro-climatic zone in India. The highest mean value of temperature (42.6 ± 1.5 ºC) has been reported during the month of April and May in the season of pre-monsoon. However, the lowest value of temperature (8.6 ± 0.9 ºC) has been reported during the month of December and January in the season of post-monsoon. The parameter studied here are T3 and T4 hormones as well as blood pH, blood glucose level, concentration of Hb, RBC count, PCV, MCV, MCH and MCHC. Data has analyzed for the effect of seasonal variation and the current findings implies that seasonal variation plays the major role to influence the thyroid activity, erythrocytic indices as well as biochemical parameters of Black Bengal Goats.<br>Keywords: Goats; Pre-monsoon; Post-monsoon; Purulia.