Diarrhea affects laying rate of laying hens prevention and treatment of physiological diarrhea of laying hens

Laying hens

Cause of occurrence:

1. Early replacement of egg feed: the calcium in the feed needs to be excreted through the layers' kidneys and changed prematurely. Due to less egg production and less calcium, the excess calcium exceeds the excretion capacity of the layers' kidneys, forming urate deposits. The kidneys need to relieve urate deposition by accelerating water excretion, causing watery diarrhea in laying hens. At the same time, the feed contains a large amount of stone powder or shell powder, which accelerates the intestinal peristalsis and leads to non-pathogenic diarrhea.

two。 When the content of crude protein in feed is too high and the laying rate is low, the excess crude protein irritates the intestines and causes diarrhea.

3. The metabolism of primary laying hens is exuberant and the physiological changes are great. A slight change in feed is easy to stimulate the intestinal tract and cause diarrhea. In order to reduce the cost, a large amount of rice bran and wheat bran are often added to the feed, which makes the crude fiber content of the feed too high, because the laying hens need low protein and energy from the later stage of breeding to the beginning of laying. The higher the content of crude fiber, the longer the diarrhea time of laying hens.

Treatment measures:

1. Drinking water should be properly controlled and the amount of drinking water should be 2pm 3. Ampicillin (10g / 50kg) and vitamin C (5g / 50kg) should be added to the drinking water for 5 days. Stop drinking electrolytic multidimensional.

two。 Kidney-tonifying drugs were used once a night for 3 days to expel excess calcium from the kidney.

3. Strengthen the management and disinfection of diseased chickens, pay attention to ventilation, prevent secondary infection of other diseases.

Precautionary measures:

1. Reduce the proportion of crude fiber in the feed of primary laying hens in the later stage of breeding, do not add rice bran, and control the addition of wheat bran within 10%.

two。 When changing the feed, it depends on the feeding condition of the flock. It is generally fed for 1 to 2 weeks before laying. When the laying rate is more than 10%, the egg feed should be changed within 3 to 5 days, so as to prevent the high content of stone powder and crude protein in the feed from irritating the intestines.

3. If the uniformity of the flock is low, the hens with small size and late sexual maturity should be strictly selected and fed until they are sexually mature.

4. The use of microecological agents in laying hens can effectively prevent physiological diarrhea.