In recent days, many grass ponds have experienced black body death and a large number of deaths. After the inspection, it was found that the deaths were mainly caused by enteritis, gill rot, red skin, parasites, and poor water quality. The analysis was mainly based on the following factors: :
1. The quality of seedlings is serious. Many old and sick, sick and sick have not been eliminated. The abuse of some illicit drugs, heavy metals, and antibiotics during seed breeding, the degradation of germplasm, and the blind feed, have resulted in serious hepatobiliary problems, morbidity and mortality. increase.
2. The proportion of recent feeding is not scientific. This should be fed 1% to 1.5% but fed 2.5% to 4%. The amount of grass fed is also unreasonable. The amount of feeding is much more, and there is no emphasis on the maintenance of the visceral digestive organs, resulting in hepatobiliary and intestinal lesions.
3. Did not pay attention to the need for oral health care. Many fish exhibited a flushing phenomenon (hepatobiliary syndrome) after eating, but they did not timely feed and feed Meikang 1, Meikang No. 2, and Meikang No. 6 for prevention and treatment, resulting in impaired digestion. Organs were not repaired, and their physical fitness deteriorated over time, which increased the incidence rate.
4. The deterioration of water quality has not been dealt with in a timely manner. The high water quality of black water, dense green water, muddy water, cyanobacteria, bared algae water, ammonia nitrogen, and sub-salts will lead to an increase in water toxins. The decline in seedlings will increase the risk of disease.
5. Parasites (trifloids, ringworms), pathogenic bacteria, and viruses multiply rapidly, increasing the risk of infection.
6. The blind use of insecticidal and bactericidal drugs has a great impact on the body of water and fish.
7. Large temperature difference between day and night, the temperature is not normal, fish stress.
8. Due to the low fish prices last year, the climate was warm and the ponds could not be cleared in time, resulting in the death of various parasites, bacteria and viruses. This may cause fish infected by the current disease to have the possibility of viral infection and increased treatment. Difficulty.
Integrate the above questions and suggestions: First, conduct a comprehensive inspection of the water quality and fish body to identify the cause; Two days of iodine (special iodine) + thioether star killing, if the deaths are reduced on this day, Meikang 1, Meikang 2, Meikang 6 were taken orally for 5 days to repair and consolidate the liver, gallbladder and intestine. If there is no reduction in death on this day, it is advisable to review the water and fish again, while taking oral administration of Yuxue Ning + Meikang No. 2 and Meikang No. 6 (3 days - 5 days, preferred for viral diseases). Beining + Meikang No. 2 and Meikang No. 6 (3 days - 5 days).
Finding the cause is critical. There are insects killing insects first, and the amount of death is large and the water quality is poor. First, detoxification and water transfer. The disease is complicated, the infection is rapid, and the outbreak is in a trend. The mortality rate is 30% to 50%. Severe cases will be completed. Before the treatment, the farmer will be aware of the seriousness of the disease. There may be a peak of death or death after treatment. It is normal. Phenomenon, sick fish, fish with weak constitution, fish with blackheads and black backs must all be eliminated in this disease. This is a natural law. Please inform farmers in advance. The reduction of death after 3 days to 5 days of general medication is a good therapeutic effect range. Because the cure for the disease is the group, not the individual, there will be a small number of deaths, as long as the latter is slowly conditioning, will be cured. Learn to observe trends in the development of fish disease and trends in the treatment process to give the most suitable treatment program. After treatment, timely feed Meikang No.1, No.2, No.6 to maintain physical fitness, improve intestinal flora and disease resistance. While maintaining the quality of water quality. Treating fish diseases first treats people's heart disease (cultivators, distributors), with a positive attitude, and does not rely on experience to prescribe drugs and do more inspections.
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