Spring has arrived, everything has recovered, and the fish and shrimp farmed in the pond have ushered in the new year's growing season. But at the same time, aquatic diseases also occur in large numbers. In the process of breeding special fish such as California perch, raw fish, yellowtail fish, forktail catfish, etc., the most likely and most harmful diseases are bacterial infections, aeromonas, Edwardian bacteria, Nocardia infection caused by hemorrhage, enteritis, rot and other diseases, which have become the biggest threat to the success of breeding.
The most effective control method for such bacterial infections is certainly the use of antibiotics, but in recent years, the use of poor results has occurred frequently, resulting in mass deaths and repeated morbidity after delivery.
These problems arise, it is a direct and fatal injury to us farmers, in this article we do not discuss the quality control of antibiotic products, the dosage of use and whether to use the right symptoms, here is to talk about how to make antibiotics fully effective, if you think that as long as the symptomatic antibiotics are cast to solve the problem of fish "infectious diseases", then it is very wrong.
Severe Nocardia infection
When every farmer uses antibiotics for disease prevention and control, please think carefully about the following questions
1. Antibiotics can solve the problem of bacterial infection, but if the fish's own blood circulation and substance carrying have serious obstacles, the amount of blood is very small, the capillaries cannot be expanded, can it still exert its medicinal effect?
2. Antibiotics have a serious toxic effect on the liver and kidneys of cod liver, when you use antibiotics, can the liver of the fish withstand it?
3. If your fish is already very slow, antibiotics treat most of the fish, the remaining part of the fish, due to the lack of antibiotic intake, the bacteria in the body produce antibodies, become antibiotics can not kill the "superbug", continue to infect in the pond, and then use antibiotics will be ineffective, how to solve this problem?
When we visit the site, we often see that the vast majority of farmers have their homes filled with various antibiotic jars, constantly visiting relatives and friends, inquiring which antibiotic is the most effective, and even recklessly taking risks to contact and try human drugs and banned drugs...
Why is this happening? It is because our farmers do not have a general understanding and understanding of the use of antibiotics, do not change the water to oxygenate, do not do the improvement of physical fitness, and directly use antibiotics to solve all problems, then you will inevitably face adverse consequences.
solution
1. Before the use of antibiotics, we must do everything possible to regulate the fish feeding state, adjust the water and increase oxygenation, and at the same time use animal protection products with good effects to promote the state of fish feeding, to ensure that as many fish as possible can eat enough symptomatic antibiotics during treatment; more importantly, to prevent the poorly ingested part of the fish from ingesting insufficient amount of antibiotics, the pathogens in the body produce drug resistance, evolve into "superbugs", and carry out secondary infections on the fish that have recovered.
2. When all antibiotics are selected for treatment, the peak of blood concentration is only within one or two hours, and the effective action time is only within a few hours, and it must be ensured that the blood carries a sufficient amount of antibiotics to reach the diseased part of the fish body to be cured.
However, in the high temperature season prone to bacterial diseases, fish have ingested excessive nutrients after long-term feeding, and the indicators of cholesterol, triglycerides, hemoglobin, red blood cells and other indicators in the blood are abnormal, and the carrying capacity of antibiotic effective substances is weakened, which will lead to incomplete antibiotic treatment and easy recurrence of disease.
During the season of large feeding, fish are more likely to appear metabolic disorders, liver lesions, excessive intestinal fat, decreased epidermal mucus, dry and bifurcated tail, poor blood flow, (the amount of blood when killing fish is very small), skin inflammation and debondity, all of which are manifestations of metabolic disorders.
When metabolic disorders occur, the antibiotics ingested by fish through the intestines are also unable to be transported effectively and cannot fully cover the location of infection, resulting in the ineffective use of antibiotics in high temperature periods. It can be seen that within 3 to 5 days, products that can quickly improve the metabolic level of fish and restore blood quality are used together with antibiotics, which will make antibiotics play a better effect.
3. As we all know, all types of antibiotics are toxic to the liver, kidneys, spleen, and when antibiotic treatment, antibiotic toxicity decomposition and discharge will cause great pressure on the liver, kidneys and other organs in the body. If a fish with severe liver lesions becomes infected, farmers will release a large number of antibiotics, which will not cure the fish, but will cause a sudden large number of dead fish due to the loss of liver function.
summary
In the process of aquaculture, it is necessary to maintain the liver and gallbladder and other organs in the fish at any time, and only healthy fish with liver and gallbladder can bear the heavy burden of a large number of antibiotics after sudden intervention, so as not to cause secondary diseases due to liver failure.
Recent cases
The place of the incident: Xingtan Town, Shunde District, Foshan City, Guangdong Province - Liu Boss California Perch Pond
When: The end of March 2020
Incident: California perch farming process encountered suspected Schubert aeromonas infection problems, resulting in 200 pounds of dead fish per day! All kinds of antibiotics took turns, seven or eight local doctors came to the scene, but they could not be solved, and dead fish continued to appear without any signs of decreasing.
This case description: Before using antibiotic sterilization and anti-inflammatory, you must pay attention to the following problems:
1. The feeding status of the fish. Ensure that as many fish as possible are eaten in order to take adequate symptomatic antibiotics during treatment;
2. Liver state of the fish. Ensure the normal metabolism of fish, while reducing the toxic side effects of antibiotics on the liver, kidneys and spleen;
3. Blood circulation of fish. It is important to ensure that the blood carries a sufficient amount of antibiotics to reach the diseased area of the fish body in order to be cured.