In production, chickens are prone to disorders of calcium and phosphorus metabolism due to lack of light and lack of calcium and phosphorus in feed, causing abnormal bone tissue growth. This nutrient disease occurs in chickens known as osteomalacia and occurs in chicks called rickets.
Symptoms The diseased chickens are mainly characterized by poor growth, loss of appetite, feathery feathers, and keel changes. The joints between the soft ribs and hard ribs are round-pinched and hard. The chest is flat and flat. It protrudes to both sides, and the mouth is soft, like an eraser, and can be bent. , foraging difficulties. The chickens can't stand on both feet and most of them lie on their backs. The chicks are curved or X-shaped. The spine is bent and the chickens are weak. The laying rate of the laying hens is reduced, the shells are thinned, and soft shell eggs are then produced. The thin eggs are thin. The boundaries between egg white and egg yolk are unclear.
Prevention measures To ensure the balance of calcium and phosphorus metabolism in chickens, the following points should be made:
1. According to the nutritional standards of chickens to prepare diets, give sufficient calcium, phosphorus and vitamin D, the best condition to use full-price compound feed, in order to ensure the chicken calcium and phosphorus needs.
2. Give enough sunlight to the flock (no sunlight passing through ordinary glass). Generally, it is better to take 6 hours of sunshine per day. The lack of sunlight can replace the available lighting, allowing the chickens to sunbathe on the beach. Closed-type chicken farms should strengthen the irradiation of fluorescent lamps. It is advisable to increase the daily light for 10 minutes, and maintain a constant time. At the SAMe time, gravel should be fed to improve the digestibility of feed for chickens.
3. Appropriate amounts of green feed, silage, and other vitamin-rich feeds such as cabbage leaves, carrots, and yam leaves.
4. When diseased chickens are found, the proportion of calcium and phosphorus in their diets should be timely adjusted according to nutritional standards, and additives should be added to increase the content of various minerals and vitamins in the diet. Special attention should be paid to vitamin D or cod liver oil to promote chickens. Body absorption of calcium and phosphorus.
5. Under normal circumstances, add vitamin D2000 international unit per kilogram of feed, each chicken can be fed with 1 ml to 2 ml of cod liver oil daily. Severe illness can be subcutaneous injection of vitamin D injection, daily 6,000 international units per kilogram of body weight to 10,000 international units, repeated every 3 days to 5 days, usually 2 to 3 times can be effective, such as with the use of oral calcium effect better.
N-acetylneuraminic Acid (SA)
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