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Clever use of feed to solve thin-shelled eggs from chickens

2020-11-25

There are many reasons why laying hens lay thin-shelled eggs, such as food insufficiency, improper temperature and light in the chicken house, cluster physiological diseases or genetic diseases. Here are a few ways to feed rationally to solve the problem of thin-shelled eggs.

1. Add calcium
 
Because laying hens need a large amount of calcium to form egg shells, it is difficult to distinguish whether the calcium content in daily feed is sufficient. Moreover, in the 50 g ~ 70 g of feed that each chicken eats every day, the absorption of calcium only accounts for the feed. The calcium content is 60%. Therefore, calcium in feed alone is not enough. 3% to 4% shell powder should be added to chicken compound feed to supplement the lack of calcium.
 
2. Add phosphorus
 
Phosphorus plays an important role in the formation of chicken bones, eggshells and somatic cells, as well as the utilization of carbohydrates, fats and calcium. Chickens must also absorb enough phosphorus for the formation of egg yolks. Therefore, phosphorus plays an important role in the egg shell and the whole The nutritional quality of eggs is crucial. The phosphorus consumed by chickens in the feed should account for more than 0.5% of the whole nutrient composition. Adding 1% to 2% of bone meal or calcium phosphate can supplement the lack of calcium and phosphorus.
 
Three, the appropriate ratio of calcium to phosphorus
 
Improper ratio of calcium to phosphorus Whether it is more calcium or less phosphorus or more phosphorus and less calcium, it will have adverse effects on the health, growth, egg production and eggshell quality of the chicken. Generally, the ratio of calcium to phosphorus in the diet should be 6-8:1. If the ratio of the two is not appropriate, it will result in thin or soft shell eggs. Since the calcification of egg shells mainly occurs in the evening of the first day, the feeding time in the evening should be appropriately extended. Therefore, feeding the chickens with shell fragments or bone meal every evening can improve the quality of eggshells.
 
Four, supplement vitamins
 
If vitamin D is lacking, even if there is sufficient calcium and phosphorus in the diet, it will hinder the absorption and metabolism of calcium and phosphorus, leading to small, deformed, thin and soft shells, and decreased egg production and hatchability. Therefore, vitamin D is a very important substance in the body of chickens. The most economical and effective way to obtain vitamin D is to let chickens get more sun, so that the 7-deoxycholesterol contained in skin and feathers can be converted into vitamin D3 after being irradiated by ultraviolet rays. Be absorbed and utilized. Vitamin D3 is generally added to the diet during production. Using cod liver oil as a supplement of vitamin D in the diet and treatment of vitamin D deficiency can achieve satisfactory results.
 
5. Keep the feed fresh
 
If the feed is moldy due to poor storage, the liver and kidneys of the chicken will be damaged by aflatoxin after feeding, which will destroy the metabolism of vitamin D in the chicken body, resulting in weight loss of the chicken, lower feed reward, and disease resistance The force is poor, the egg production is reduced, and the eggshell becomes soft. Therefore, it is necessary to properly keep the feed to prevent moisture and mildew.


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