Global warming has two way effects on animal production system. Directly affects the health, reproduction, nutrition etc. of the animals resulting in poor performance, inferior product quality, outbreak of novel diseases, etc. On the other hand there are indirect effects on animal production due to change in soil fertility, decrease in preferred vegetation, rangeland degradation, desertification and decrease in production of feed stuffs. Animals exposed to heat stress reduce feed intake and increase water intake. Environmental stressors reduce body weight, average daily gain and body condition of livestock.