Ascites caused by Aeromonas hydrophila, Actinobacillus lophi, Edwardsiella and other pathogenic bacteria are mostly hemolytic ascites, while most of the non-hemolytic ascites are caused by over-nutrition and metabolic abnormalities in bullfrogs, with a large amount of fat deposited in the fat, and nutritional metabolic disorders.
Bullfrog ascites prevention and control program reference
After communicating with Mr. Yang in detail, the morbidity pool usually has muddy water quality, but the feeding situation is better than other pools, so feeding is more than other pools, and it has rained twice in the past two days. Then this situation is likely to be the pathogen and nutritional metabolic disorders factors **** the same cause, so daily prevention and control of ascites can not focus on the pathogen alone, but also focus on the nutritional metabolism of bullfrogs.
1, tadpoles in the pond before thoroughly disinfected
available potassium permanganate/lime whole pond splashing
2, control of feeding density
although the breeding density can be calculated directly farming efficiency, but the premise of successful breeding is smooth out of the frog. Too high density of bullfrog breeding corresponds to higher bait feeding and feces production. If the carrying capacity of the water body is exceeded, it will aggravate the deterioration of water quality and the breeding of pathogenic bacteria.
3, the quality of the feed
We all know that when the weather is hot and humid, the feed is easy to mold and deteriorate. In fact, there is moisture in the air. As long as the feed is exposed to the air, feed mold is always there. Therefore, you should choose high-quality feed, and secondly, you should not buy large quantities at one time, and the feed should be used up as soon as possible after opening.
4, control the material to promote metabolism
Bullfrog overnutrition and metabolic abnormalities can cause non-pathogenic ascites, so the amount of feeding should be controlled in the breeding, while mixing bile acids to regulate fat metabolism, reduce fat deposition in the liver, reduce the occurrence of non-pathogenic ascites.
5, regulate water quality
Bullfrog pools are generally shallow, and the carrying capacity of the water body is poor. Ammonia nitrogen, PH indicators are unstable and organic matter degradation is slow. Pathogens such as bacillus, Aeromonas hydrophila and other pathogens that cause ascites are widely present in the soil and water, and the density of pathogens is higher in the sewage that is rich in organic matter.
So daily should maintain the bacterial and algal homeostatic balance, strengthen the bottom frequency, in the high incidence of ascites disease in the summer and fall, regular disinfection of pool water.