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.

摘要
印度拥有数量可观的黑孟加拉山羊（Black Bengal goat）种群，其在当地山羊养殖户的生产生活中占据重要地位。本研究旨在探究印度本次研究涉及的农业气候区内，季节变化对黑孟加拉山羊（Capra aegagrus hircus）甲状腺活性、红细胞参数及部分生化指标的影响。研究区域在季风前季节（4月与5月）的平均气温最高，达42.6 ± 1.5 ℃；而在季风后季节（12月与1月）的平均气温最低，仅为8.6 ± 0.9 ℃。本研究测定的指标包括甲状腺激素T3、T4，血液pH值、血糖水平、血红蛋白（Hb）浓度、红细胞（RBC）计数、红细胞压积（PCV）、平均红细胞体积（MCV）、平均红细胞血红蛋白含量（MCH）及平均红细胞血红蛋白浓度（MCHC）。经季节变化效应的数据分析后，本研究结果显示，季节变化是影响黑孟加拉山羊甲状腺活性、红细胞参数及生化指标的核心因素。
关键词：山羊；季风前季节；季风后季节；普尔利亚（Purulia）