Yasothai, R.TANUVAS2018-12-202018-12-202018-08http://krishikosh.egranth.ac.in/handle/1/5810086161TNV_IJSET_2018_7(4)1403-1405Poultry is subject to multiple environmental factors such as temperature, humidity, light, altitude, wind velocity, solar energy, quality of air and water and density of population. None of these factors are completely constant and are all interrelated. These factors counteract/reinforce the impact each one has on the bird. Acclimatization tends to allow poultry to withstand sudden short-term excursions from normal (NRC, 1981). Temperature is one of the important factor, affecting poultry production. Most parts of India are tropical, and the temperature in some parts of the year exceeds 35ºC. Heat stress is a problem in broilers from 4 weeks of age onwards and in layers and breeders during production. Environmental interventions available for reducing the temperature are not economically feasible for many broiler producers to modify the environment. Hence, means of reducing the heat load on broilers through nutritional strategies would be valuable.enVeterinary ScienceArticle