Animal husbandry is the science of rearing, feeding and caring, breeding and disease control of animals. It ensures supply of proper nutrition to our growing population through activities like increased production and improvement of animal products like milk, eggs, meat, honey, etc.
a. Poultry production depends upon the photo period. Discuss

Explanation

Light is an important aspect of an animal environment. Light energy is essential for growth and reproductive performance. Hence livestock farmers regulate the photo period of poultry and livestock to stimulate reproduction. For chicken there are three major functions of light.
(i) To facilitate sight.
(ii) To stimulate internal cycles.
(iii) To initiate hormone release.