During the growth and development of chickens, especially in winter, if the metabolism of the body’s minerals, especially calcium and phosphorus, is destroyed, it will cause bone tissue to grow abnormally and form a kind of nutritional disease, usually called rickets.

First, the symptoms.
Mainly manifested as dysplasia, loss of appetite, bone softening, soft ribs and hard ribs at the junction of a bead-like hard section, chest flat and flat, protruding to both sides. Severe mouth is as soft as rubber, it is difficult to feed, the pain in both limbs cannot stand, and most of the bed is lying. Egg laying rate decreased.

Second, preventive measures.
1. To give the chicken enough calcium, phosphorus and vitamin D, it is best to feed full-priced compound feed.
2. Give 16 hours of light daily. At the same time supplement sand grains to improve the chicken’s digestibility of feed.
3. Make up some green feed.

Third, the treatment.
1. Timely increase the proportion of calcium and phosphorus in the diet. Particular attention should be paid to vitamin D or cod liver oil to promote the absorption of calcium
and phosphorus by chickens. In general, vitamin D2000 International Units are added per kilogram of feed, and cod liver oil is used 1 to 2 ml per bird per day.
2. Add bone meal and other substances to the diet. Bone meal can account for 1% to 2% of the diet.