Chicken anus prolapse, egg laying how to prevent and cure chicken fatty liver

Fatty liver in laying hens, also known as fatty liver syndrome, is a common disorder of fat metabolism in laying hens. The disease mostly occurs in high-yield laying hens during the peak laying period. the cause is absolute nutrition, relative excess or low body absorption function, which is characterized by a decrease of more than 5% in laying rate, more prolapse of anus and poor anti-stress ability.

Chicken fatty liver

1. Treatment method

The main results are as follows: (1) the feed energy level of laying hens is decreased appropriately. Wheat bran can be used instead of 5% to 10% corn, or vegetable oils rich in linoleic acid can be used to replace animal oils and mixed oils commonly used in feed.

(2) add 600 g / t choline chloride, 300 g / t methionine and appropriate amount of vitamin E and vitamin K3 to feed and evenly mix 0.5% of Chinese herbal medicine to prevent chicken pullorum and colibacillosis. 200 mg vitamin C was added to each liter of drinking water for 15 days.

(3) for chickens with serious illness, the amount of feeding can be reduced to curb the development of the disease and protect the flock.

two。 Precautionary measures

The main results are as follows: (1) to formulate a scientific feed formula according to the feeding standard of laying hens. Nutrition can meet the health and production needs of laying hens, but not excess; the proportion of nutrients is reasonable, especially the ratio of protein to energy, because excess energy is the main cause of fatty liver in laying hens.

(2) with layer disinfection, ventilation, heat prevention and cooling, etc., the temperature in the henhouse is controlled within 28 ℃ and the humidity is below 70%. At the same time, we should do a good job in immunization or drug prevention of laying hens with pullorum, colibacillosis, coccidiosis and other epidemic diseases.

(3) pay attention to protecting the liver function of laying hens so that the synthesis and transport of fat in the liver of laying hens can be carried out smoothly.

(4) carefully monitor the change of body weight during the breeding period of laying hens. When the average weight of laying hens exceeds 5% of the standard weight, feed restriction should be carried out immediately. There are two methods of feed restriction: first, from the date of feed restriction, the feed is not added with the increase of age, until the body weight of laying hens falls back to the standard range, and then begins to be fed gradually. Second, from the date of feed restriction, the laying hens were fed according to the percentage of overweight, until the weight of laying hens fell back to the standard range. The second method, the effect is obvious, easy to master, but it should be noted that the material trough should be sufficient and placed evenly. It can also be fed throughout the day and thrown continuously in the morning to prevent grabbing food, resulting in a greater difference in the weight of laying hens. If the flock is uneven, it can be divided into general weight group and small weight group, general weight group, and feed restriction. In short, in about 20 weeks, the cultivation of a healthy and tidy flock of chickens with up to the standard weight is not only the basis of high yield and efficiency, but also the basis of preventing fatty liver in laying hens.