COMPARISON OF THERMAL STRESS ALLEVIATION METHODS FOR MURRAH BUFFALOES IN HUMID TROPICS

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dc.contributor.advisorManju Sasidharan
dc.contributor.authorSRUTHI S.
dc.date.accessioned2020-09-23T05:49:20Z
dc.date.available2020-09-23T05:49:20Z
dc.date.issued2019
dc.description.abstractA study was conducted to compare the different thermal stress alleviating methods for Murrah buffaloes in humid tropics. Twenty-four lactating Murrah buffaloes were randomly selected from University Livestock Farm and Fodder Research Development Scheme, Mannuthy and grouped into four treatments with six animals each namely, T1 as control, T2 was allowed to wallow, T3 was provided with THI based automated foggers and T4 was provided with THI based automated wetting and forced ventilation and were studied under two seasons with different THIs (low – 76.93 ± 0.53) and high – 82.55 ± 0.35). The mean rectal temperature (°F) was 102.04 ± 0.02, 102.08 ± 0.02, 101.96 ± 0.02 and 100.89 ± 0.02 in T1, T2, T3 and T4 respectively during high THI season. The mean pulse rate (beats per minute) was 57.92 ± 0.15, 55.71 ± 0.15, 56.33 ± 0.15 and 55.23 ± 0.15 in T1, T2, T3 and T4 respectively during high THI season. The mean respiratory rate (breaths per minute) was 17.92 ± 0.15, 16.48 ± 0.15, 17.08 ± 0.15, 15.28 ± 0.15 in T1, T2, T3 and T4 respectively during high THI season. The respiratory rate, pulse rate and rectal temperature were found to be lowest in T4 with a significant difference with all other treatment groups in both seasons. On analysis for cortisol, no significant difference was observed in low THI season but significant difference was observed within the treatments in the high THI season. In high THI season, cortisol level in T4 group was significantly higher than the control group. Even though there was no significant difference, a substantial increase in milk yield was found in T4 when compared to control group in both the seasons. It may be concluded that animals in T4 group experienced relatively mild heat stress when compared to control group. Among the three thermal stress alleviating measures, T4 (automated wetting and forced ventilation) was the group that exhibited lowest heat stress during high THI which was evident by the lower values in physiological and biochemical parameters. So, it could be suggested that in tropical humid climate, automated wetting and forced ventilation with respect to dynamic variation in temperature and relative humidity maybe preferred in comparison to other thermal stress alleviating measures for Murrah buffaloes.en_US
dc.identifier.urihttps://krishikosh.egranth.ac.in/handle/1/5810151814
dc.keywordsCOMPARISON THERMAL STRESS ALLEVIATION METHODS MURRAH BUFFALOES HUMID TROPICSen_US
dc.language.isoEnglishen_US
dc.pages73en_US
dc.publisherCollege of Veterinary and animal Science,Mannuthyen_US
dc.research.problemCOMPARISON OF THERMAL STRESS ALLEVIATION METHODS FOR MURRAH BUFFALOES IN HUMID TROPICSen_US
dc.subLivestock Production and Managementen_US
dc.themeCOMPARISON OF THERMAL STRESS ALLEVIATION METHODS FOR MURRAH BUFFALOES IN HUMID TROPICSen_US
dc.these.typeM.V.Sc.en_US
dc.titleCOMPARISON OF THERMAL STRESS ALLEVIATION METHODS FOR MURRAH BUFFALOES IN HUMID TROPICSen_US
dc.typeThesisen_US
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