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Birsa Agricultural University, Ranchi

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20201
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Subject: Veterinary Pharmacology × End date: 2023 × Start date: 2020 ×
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    ThesisItemOpen Access
    STUDIES ON THE EFFECT OF METEOROLOGICAL VARIABLES ON PHYSIOLOGICAL, HAEMATO-BIOCHEMICAL AND OXIDATIVE STRESS IN BLACK BENGAL GOAT
    (Birsa Agricultural University, Ranchi, 2020) Lata Murmu, Asha; Verma, R.K.
    Despite having well-developed mechanisms of thermoregulation, animal do not maintain strict homeothermy under extreme climatic condition (Lu, 1989).Harsh environments constitute stressful conditions to animals raised in extreme climatic areas, and as a result, animals develop various adaptive mechanisms that enable them to survive under conditions of extreme heat or extreme cold. The present investigation was therefore proposed to be undertaken with the following title and objectives: The study entitled, “The effect of Meteorological variables on Physiological, Haemato-Biochemical and Oxidative Stress in Black Bengal Goat” was conducted on twelve adult apparently healthy Black Bengal goats with the objective to determine the seasonal variations in different physiological responses, haemato-biochemical constituents and antioxidant status. Twelve Black Bengal does were investigated for their physiological, haematobiochemical and antioxidants profiles during autumn(Oct to Nov) and winter (Dec to Jan) seasons. All Physiological parameters such as rectal temperature, respiration rate and heart rate measured daily at 6 a.m. and 3 p.m. throughout the study period. Blood samples were collected from the Black Bengal goats atfortnightly interval during experimental period for various biochemical analyses. Meteorological parameters like dry bulb temperature and relative humidity were recorded daily for two times at 6 am and 3 pm for estimation of THI throughout the study period. In addition to that the meteorological data for last one year was also collected for estimation of THI. In the present study, the mean THI found during autumn and winter season was 70.45±0.60 and 57.58±0.91, respectively while the mean THI for last oneyears was 72.09±0.38 during autumn and 62.14±0.28 during winter season. During autumn season, the mean rectal temperature (0F), respiration rate (breaths/min.) and heart rate (beats/min.) were 101.17±0.19, 25.50±0.43and 69.45±1.51 respectively. During winter season, the mean rectal temperature, respiration rate and heart rate were 98.67±0.29, 22.34±0.21and 67.55±0.88, respectively. Significant (p<0.05) differences were found in between day and season (autumn and winter) for all the physiological parameters during the experimental period. These physiological parameters were directly proportional to the THI. Among the Hematological attributes, the TEC (106/μl), PCV (%), monocyte(%), neutrophil (%) and eosinophil(%)levels were found significantly (p<0.05) higher during winter than during autumn season while the non-significant results were found in Hb(g/dl), Lymphocyte (%) and Basophil(%) level in both the season. Among the biochemical constituents of black bengal goat, the mean concentration of glucose (mg/dl) were significantly (p<0.05) higher during winter than the autumn season. The serum total protein was non significantly differed. Its value decreased during winter in the present study. The serum total protein were found directly proportional to the THI and the glucose level were inversely proportional to the THI. The serum minerals studied in Black Bengal goat showed significant (p<0.05) difference in between the seasons. The serum calcium, inorganic phosphorous and magnesium levels in Black Bengal goat showed variations during both season. The serum calcium (mg/dl), inorganic phosphorous (mg/dl) and magnesium level were significantly (p<0.05) lowers during winter than autumn. The serum calcium, inorganic phosphorus and magnesium level was directly proportional to the THI. All the antioxidants that studied (SOD, LPO and GPx) showed significant (p<0.05) variations during autumn and winter season. The SOD (IU/ml), LPO (nmol of MDA/ml of packed cells) level higher during winter season than the autumn season whereas GPx(IU/ml)level was lower during winter. Thus the SOD and LPO was inversely proportional to THI and GPx was 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 winter season. The results also highlighted drastic variations in the values of some of the constituents in animals. The information obtained is useful in understanding the adaptive physiology of the Black Bengal goats during environmental stress. The data generated may also help to distinguish and discriminate healthy animals from stressed ones under special physiological status of goats.