Wireless system for pregnancy detection in cows by monitoring temperature changes in body

Wireless system was designed to measure body temperature remotely and detect early stage of pregnancy in multiple cows which consists of Personal computer (PC), Xbee modules and MATLAB program. The Xbee transmitters with the LM35 temperature sensors were attached under the tail head of the cows. The study investigated whether body temperature increases in cows after 5^th to 12^th day after insemination as suggested by previous study that an increase in milk or body temperature could be an indicator of an immune response of the mother to the entry of embryo into the uterus. A significant increase in body temperature was noted after insemination in the pregnant cow and otherwise in the non-pregnant cow. The results obtained in the study could suggest that low cost, commercially available electronic components and materials could be used as non-invasive pregnancy detection in cows with range of up to 40 m without human intervention.