TAILIEUCHUNG - systems of production markets organisations and performance phần 3

người học nghề cần đào tạo kinh doanh bổ sung. Không có năng lực đào tạo kinh doanh tồn tại trong vùng dự án, do đó, có một nhu cầu xây dựng năng lực của các nhà cung cấp nên được trả cho sự phù hợp của các bậc thầy họ không luôn luôn hiểu được vai trò cố vấn của họ và chức năng đào tạo | PRODUCTION SYSTEM Circadian variations in heat production and heat loss in Murrah buffaloes during different season Vaidya M. Kumar P. Vir Singh . Dairy Cattle Physiology Division. National Dairy Research Institute Karnal -132001 India ABSTRACT Rhythmicity in physiological parameters is an important process both as convenient and reliable markers of operation of the biological clock and as an indicator of general health of an animal. Keeping the hypothesis in mind 6 each of growing 8-12 months and adult 18-24 months female Murrah buffaloes were selected from NDRI herd to monitor the circadian physiological functions during winter Dec- Jan spring Feb-March and summer April-May season. Physiological functions were recorded at hrs interval . and hrs. Physiological responses respiration rate RR rectal temperature RT skin temperature ST and pulse rate PR oxygen consumption heat production and heat loss through sweating and panting were recorded at four hourly intervals round a day. Environmental variables viz. dry bulb and wet bulb temperature relative humidity minimum and maximum temperature wind speed was also recorded at the same interval and THI was calculated. Physiological responses RR RT ST and PR increased significantly p during spring and summer season compared to winter in both growing and adult buffaloes. Oxygen consumption of growing and adult Murrah buffaloes was found to be significantly higher p at hrs than at hrs during summer compared to spring and winter. Heat storage and heat production differed significantly p among adult and growing buffaloes during spring and summer season. Heat loss through skin and pulmonary system was higher p in adult compared to growing buffaloes during summer. Significantly higher p heat load was observed in adult compared buffaloes during summer. THI showed a positive correlation with physiological responses oxygen consumption heat production .

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