"Ten suggestions" to improve the Therapeutic effect of Fishery Medicine

A variety of diseases will inevitably occur in the process of fish culture, and the effect is often not satisfactory when treated with drugs, because the therapeutic effect of drugs is affected by various factors. Here, the author puts forward the suggestion of "ten points" to improve the therapeutic effect of fishery medicine according to his own experience, which can only be used as a reference for the majority of farmers.

First, accurate diagnosis of fish disease, symptomatic use of medicine. Symptomatic medication is one of the most basic conditions to improve the effect of drug treatment, especially for some fish diseases that are easy to mix dishes (such as rotten Gill caused by parasitic Chinese mackerel and rotten Gill caused by bacterial infection, etc.). Symptomatic use of medicine can have the effect of eliminating the disease.

Second, accurately measure the water body and calculate the accurate dosage. The dose of oral medicine should be calculated according to the total weight of fish eaten in the pond or according to the daily feeding amount.

Third, find out the sensitivity of different fish to different drugs. In order to avoid the formation of drug damage, it is necessary to make clear before medication that different fish have different sensitivity to drugs, such as snakehead snakehead is more sensitive to ferrous sulfate and scaleless fish are more sensitive to trichlorfon. If these drugs are used, not only can not cure the disease of fish, but will cause poisoning and death of farmed objects.

Fourth, pay attention to the antagonism and synergism between drugs. When two or more drugs are mixed, there may be two completely different results, namely: antagonism, make the efficacy cancel each other and reduce the effect; synergism, make the drugs react with each other and enhance the efficacy. Therefore, if it is really necessary for two or more drugs to be mixed with each other, it is best to use them under the guidance of technicians.

Fifth, when sprinkling drugs in the whole pool, it is best to feed them first and then sprinkle them, because the appetite of fish will decrease after the drugs are sprinkled. In addition, it is best to use the medicine at 9 to 10:00 in the morning or 4 to 5 in the afternoon on a sunny day, so as to avoid direct sunlight at noon, because the higher the temperature, the faster the volatilization of the drug, and the shorter the duration of the effect; and it is not suitable to use drugs in cloudy and rainy days (except for some drugs that can release oxygen), because the light on rainy days is too poor, and it is easy to cause hypoxia in the fishing pond after using the medicine.

Sixth, the whole pool must be evenly sprinkled with drugs, and some insoluble and residual drugs (such as bleach) must be filtered out, so as to prevent the residue from being poisoned by fish in the pool.

7. When sprinkling medicine in the whole pool, it should be gradually sprinkled to the downwind from the upwind, and people should stand in the upwind, so that the liquid can be evenly distributed in the pool water with the help of the wind, and at the same time ensure the safety of the sprinklers.

8. Change the variety of drugs from time to time. Long-term use of the same drug to treat fish disease, the initial effect will be very good, but over a long period of time, the efficacy will often weaken, this is because the pathogen has resistance to the drug, that is, drug resistance. Therefore, the varieties of drugs should be changed periodically and used alternately.

9. when taking medicine bait internally, it is best to feed part of the normal feed first, so that healthy fish are fed with medicine bait first, so that those sick fish who are sick but still have some appetite can get medicine bait, so as to achieve the effect of drug treatment.

Containers for dissolving or disposing drugs should be plastic buckets or wooden buckets, not metal containers, because most fish medicines are easy to react with metals to change the composition and properties of the drugs.