ABSTRACT
This study aims to set up an automatic environment monitoring system in a dairy farm through the use of wireless communication technology in order to replace traditional manual measurement and control the dairy farm environment. The acquired data are compared with the dairy lactation yield in order to provide the most comfortable environmental parameters for the dairy, to increase the dairy lactation yield and enhance the appetite of the cows. The experimental results reveal that the average lactation yield of a cow during the cool season is 4.0935 l/day (16.43%) more than in the muggy season. Under the same moderate heat stress and during the same season, the lactation yield of a cow reduces by about 0.6481 l/day (3.11%) for every 1°C increase in average temperature. Sudden ambient temperature changes during an attack of cold weather (about 3 days) would reduce the average lactation yield of a cow by about 1.0273 l/day (4.12%). The effect of humidity on the dairy lactation yield is not significant. Temperature appears to have a larger influence on lactation yield than humidity. In this case, work should be undertaken to reduce temperature levels in order to improve the dairy lactation yield under heat stress, e.g. by controlling the cooling devices of fans, and water valves, and using shading to reduce the ambient temperature.
