"Hypothermia disease" is a nutritional disease in which the metabolism of calcium and phosphorus is destroyed during the low temperature season in chickens, resulting in the abnormal growth of bone tissue. Ru Min, a staff member from the Animal Epidemic Prevention Station in Sanyuan County, Shaanxi Province, told reporters that the onset of adult chickens is often referred to as rickets, and the onset of chicks is often referred to as rickets. Both adult chickens and chicks have a significant impact on their normal growth after onset. In particular, the egg production of laying hens has dropped sharply, the eggs have become smaller and the quality has deteriorated, which has seriously hampered the effectiveness of raising chickens. Therefore, raising chickens during the cold winter season must pay attention to the prevention and treatment of “low temperature diseaseâ€.
First, the symptoms of chickens are mainly manifested as dysplasia, loss of appetite, feathers messy, soft bones, keel bends, soft ribs and hard ribs joints have a round bead-like hard section, chest flat and flat, protruding to both sides. Severe mouth soft, such as rubber, can be bent, feeding difficulties, chicken feet can not stand the pain, most lying on the bed.
Second, prevention
1, dietary preparation according to the nutritional standards of chickens, given adequate calcium, phosphorus and vitamin D, the best condition to use full-price compound feed, to ensure that chicken calcium and phosphorus needs.
2. The chicken farm should provide sufficient sunlight (invalid sunlight passing through ordinary glass). Generally, it is better to take 16 hours of sunshine per day. It is better to replace the available sunshine with insufficient sunshine. The best condition is to let the chickens on the beach. Sunbathing; closed chicken farms should strengthen the exposure of fluorescent lamps, an increase of 10 minutes per week is appropriate, until 16 hours, to maintain a constant. At the same time, gravel is supplemented to increase the digestibility of feed for chickens.
3ã€Appropriately feed some green fodder or silage with feed containing more vitamins (especially vitamin D), such as cabbage leaves, carrots, and yam leaves.
Third, treatment
1. When diseased chickens are found, the proportion of calcium and phosphorus in the diet should be adjusted in time. Under normal circumstances, calcium, phosphorus in the diet content: 0.9% of chickens, 1.1% of growing chickens, 3.1% -3.5% of layer chickens, meat chickens, about 0.9%. The ratio of calcium to phosphorus is as follows: 21:1 for chicks, 23:1 for growing chickens, and 7:1 for laying eggs. At the same time, additives can be added to increase the content of various minerals and vitamins in the diet. In particular, pay attention to vitamin D supplementation, or cod liver oil, in order to promote the body's absorption of calcium and phosphorus. In general, vitamin D2000 International Units and 1-2 ml per day of cod liver oil per kilogram of feed are used.
2, in the diet to add bone meal, shell powder or eggshell powder, stone powder and other substances containing more calcium and phosphorus. Under normal circumstances, bone meal only accounts for 1%-2% of the diet, stone powder and shell powder together account for 1%-2% in the chicken's feed, and 2% of the layers and breeder's diet.
3, severe subcutaneous injection of vitamin D injection. Daily 6000-10000 international units per kilogram of body weight, repeated every 3-5 days, generally 2-3 times can be effective, such as with oral calcium better.
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