2, UV through the skin microvessels, 7-dehydrocholesterol can be converted to vitamin D3, so as to maintain the normal metabolism of calcium and phosphorus, to ensure normal bone development, prevention of soft leg disease; 3, under the direct sunlight, its ultraviolet bactericidal effect, but also can enhance the chick's immunity and disease resistance; 4, sunlight can increase the activity of oxidase, enhance gas metabolism, and can stimulate the pituitary gland, and promote the secretion of sex hormones. It can be seen that sunlight can promote the growth and sexual maturity of young chickens, early production, and enhance the disease resistance of chickens. Sunshine belongs to natural light. Artificial lighting such as incandescent lamps also has a similar effect and can be used in the chicken industry. SICHUAN UNIWELL BIOTECHNOLOGY CO.,LTD. , https://www.uniwellbio.com
1, the sun can stimulate appetite, promote digestion, accelerate blood circulation, enhance hematopoietic function;