Manifestations of enteritis in Penaeus vannamei cultured in small shed

2023-09-18

Qingdao Zhongren Animal Medicine Co., Ltd

Zhongren Aquatic Products

Penaeus vannamei enteritis

The initial performance for intestinal redness and inflammation, stool long

The mid-term performance is slow feed, jejunum jejunum

Time: 1 September 2023

Time: Dongying, Shandong

Breeding species: Penaeus vannamei

Small shed area and stocking specifications: 40 mu of land with water depth of 1 meter; Stocking specifications are 57000/shed

Water quality index of dongyi shed: nitrite: more than 0.3 ammonia nitrogen: 0.2 PH value: 8.4

Analysis of the causes of enteritis: enteritis has many problems, such

1: water concentration

Weather changes cause inverted algae, shrimp eat dead algae enteritis

2: fecal residual bait

The weather is hot, the residual bait of excrement is fermented at the bottom of the pond, and the shrimp has enteritis after eating dirty things.

3: feeding too much

Especially in the medium term, the feeding is more, the liver and intestinal burden of shrimp is heavy, and the feeding is too strong, which exceeds the digestion and absorption capacity of shrimp, resulting in enteritis.

4: Vibrio and viral infections

Not only for the shrimp liver and other immune organs, but also attack the intestinal tract to complete intestinal inflammation

 

Solution measures

Internal administration: the whole intestine raw mixture is taken internally. In the early stage of cultivation, the mixture can be 30~50kg/bottle. In the middle and late stages of cultivation, 50~100kg/bottle can be mixed for 3~5 days.

liver and gallbladder times health:Add 3~5ml per Kg feed.

Comparison of effect before and after medication

Effect feedback

After 4-5 days of continuous mixing and feeding, the intestinal tract of Penaeus vannamei has obviously changed from the previous jejunum and empty stomach to full intestines and stomach. It can be seen that the intestinal tract of shrimp has obviously improved, the feces has shortened, and the feeding has been accelerated. In addition, there is also irritable enteritis caused by weather changes, and the feeding should be properly controlled and reduced.

Summary

Enteritis of shrimp has always been a difficult problem. It is necessary to deal with the water, the bottom of the pond, the feeding and control, and the prevention and control of bacteria and viruses. No matter which joint is not properly controlled, it is easy to have problems. Moreover, most of the time, the problem is not a single outbreak, but also vibrio enteritis and a large number of algae. It is comprehensive. The key lies in the prevention at ordinary times.

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