About bullfrog ascites, it is generally divided into hemolytic ascites and non-hemolytic ascites according to symptoms. Hemolytic ascites is characterized by massive abdominal bleeding and severe swelling of important tissues and organs such as liver, kidney and spleen. Non-hemolytic ascites shows that there is no blood in the ascites, which is white or transparent, and the liver is severely buttered and the kidney is eroded.

The ascites caused by Aeromonas hydrophila, Acinetobacter Loffii, Edwardsiella and other pathogenic bacteria is mostly hemolytic ascites, while the non-hemolytic ascites is mostly bullfrog's overnutrition and abnormal metabolism, and a large amount of fat is deposited in the fat, which leads to nutritional metabolism disorder.

Reference of prevention and control scheme for bullfrog ascites

After detailed communication with Mr. Yang, the water quality of the sick pool is usually turbid, but the feeding situation is better than other pools, so it has been fed more than other pools. It rained twice these two days. So this situation is probably caused by pathogens and nutrient metabolism disorder, so we should not only pay attention to pathogens, but also pay attention to the nutrient metabolism of bullfrog in daily prevention and treatment of ascites.

1. Tadpoles should be thoroughly disinfected before going into the pond.

Potassium permanganate/quicklime can be scattered all over the pool.

2. Control the feeding density

Although the breeding density can directly calculate the breeding benefit, the premise of successful breeding is the smooth emergence of frogs. Excessive bullfrog culture density corresponds to higher feed feeding and fecal production. Exceeding the carrying capacity of water will aggravate the deterioration of water quality and the breeding of pathogenic bacteria.

3. Check the feed quality

As we all know, when the weather is hot and humid, feed is prone to mildew and deterioration. In fact, there is water in the air. As long as the feed is exposed to the air, feed mildew will always exist. Therefore, first, we should choose high-quality feed, and second, we should buy it in large quantities at one time and use it up as soon as possible after opening the feed.

4. Control substances and promote metabolism

Because the overnutrition and abnormal metabolism of bullfrog can cause non-pathogenic ascites, it is necessary to control the feeding amount and mix bile acids to regulate fat metabolism, reduce the deposition of fat in the liver and reduce the occurrence of non-pathogenic ascites.

5. Adjust water quality

Generally, bullfrog pond has shallow water level and poor water carrying capacity. Ammonia nitrogen and PH are unstable, and organic matter degrades slowly. Acinetobacter, Aeromonas hydrophila and other pathogens causing ascites widely exist in soil and water, and the density of pathogens is higher in sewage rich in organic matter.

Therefore, it is necessary to keep the stable balance of bacteria and algae in daily life, strengthen the frequency of changing the bottom, and disinfect the pool water regularly in summer and autumn when ascites is high.