Selection and use of fishery drugs

Selection and purchase

Fishery medicine "three certificates" should be complete (production license, production approval certificate, implementation standard number), with product quality certificate. Regular fishery medicine manufacturers have applied for a registered trademark, and the patterns, pictures and words of the trademark are marked on the packaging, labels and instructions, and marked with the words of the registered trademark or the registered mark. The quality of the internal and external packaging materials of fishery medicine should be good. The general packaging is marked with instructions for use, commodity name, chemical name, drug composition, content, production approval number, manufacturer name, address, production batch number, production date, period of validity, indications or functional indications, usage, dosage, withdrawal period, transportation and storage conditions, etc.

Fish medicine has a variety of dosage forms, the normal powder fish medicine is dry and loose, the particles are uniform and the color is the same. The appearance of the tablet is neat and complete, the color is uniform and the surface is smooth. If there is powder caking, peculiar smell, flatulence, tablet cracking, damp, water agent precipitation, turbidity, foreign body, liquid leakage, etc., do not buy. The fishery medicine produced by different manufacturers may have the same composition, but the commodity name, packaging, and the content of active ingredients are different, and the price is also very different. It is necessary to make a careful comparison when purchasing, calculate the unit cost of the effective dosage, and buy the fishery medicine as cheaply as possible.

Use

Sprinkle fish medicine

Accurately measure the water body and calculate the drug dosage. The drugs that need to be dissolved and sprinkled should be carried out in the wood (plastic) material non-ferrous dissolving device, and some fishing drugs are corrosive and will corrode the dissolving device. Sprinkling medicine should follow the procedure of first feeding and then spilling medicine, and it is forbidden to sprinkle medicine while feeding. Fish floating head or floating head just disappeared should not be sprinkled with medicine. Sprinkling drugs is generally carried out in the morning on a sunny day, and light-sensitive drugs should be carried out in the evening. The fish medicine should be sprinkled from the upwind to the downwind, more in the deep water and food fields, less in the shallow water, and the remaining drug residues should not be dumped at will, so as not to cause poisoning to people and livestock.

Feed the bait

First of all, read the operating instructions, do not understand the place to consult the aquatic technical personnel. To master the medicinal properties, identify the cause, and prescribe the right medicine to the case. Choose the fish palatable feed to prepare the bait and mix it fully. Stop eating for one day before feeding the bait to make the fish hungry. In general, the bait is fed in the morning under normal weather conditions, and the feeding amount is appropriately reduced compared with the normal, so that the fish can fully eat the bait and improve the curative effect.

Mixed use of two or more drugs, pay attention to the compatibility of drugs, in order to prevent the formation of antagonism, reduce the efficacy, or form more toxic drugs, causing fish death. Fishery drugs should be used alternately, the same drug should not be used for a long time to prevent drug resistance, and drugs should not be used in excess of or below the prescribed dose.

After using medicine, we should pay attention to observe the activity of fish and see what abnormal situation occurs, so as to take rescue measures, and at the same time, we should make good observation and medication records, so as to accumulate experience for disease prevention and control in the future.

Prohibited drugs, common prohibited drugs in aquaculture are: mercurous nitrate, mercuric acetate, mercuric chloride, malachite green, sulfonamidine, sulfathiazole, furazolidone, furacilin, erythromycin, chloramphenicol, ciprofloxacin, quinolinol, pentachlorophenol sodium, BHC, toxaphene, DDT and so on.