Using bait to prevent fish disease is a simple and practical method. In the production practice, how to let the fish eat the appropriate amount of baits is the key to the effective prevention of fish diseases.
The principle of using fish bait to treat fish diseases: When the fishes become ill, the first reason is to correctly diagnose the cause, and only the fish diseases that are determined are the only drugs that can be selected for the disease. One is that the bait is suitable for the treatment of fish diseases that need to be effectively treated by internal medicine, such as enteritis; and the fish disease that can be treated by disinfecting the water body or sterilizing the fish surface is not suitable for bait treatment, such as saprovirus. The second is to grasp the medicinal properties. There are many types of drugs used for oral administration in aquaculture. When making baits, the drugs should be selected according to the type of fish disease. The third is to allocate the appropriate amount of baits according to the type of fish and the estimated weight of the fish.
Bait preparation: The drug is mixed into the fish feed in a certain proportion, and it becomes a bait. The fish feed, that is, the base material must be the favorite food of the fish. Generally, the most suitable base material is a paste of corn, soybean, wheat, peanut powder, rice bran, bran and the like. Such as grass fresh fish can be used tender grass, fish can be used for squid, bran, etc., can be used fresh herring snail meat, squid fish can be used in fish, livestock waste and so on. Appropriate addition of attractant, in order to stimulate the desire of fish to eat, you can add appropriate amount of attractant in the bait. In general, Chinese herbal medicines with strong aromas are supplemented with some salt as lures, such as star anise, clove and garlic. Adding a binder to make baits generally requires at least 1 hour of stability in water. The best choice is to use viscous wheat flour, muxi powder, glutinous rice flour, etc. as binders. In addition, when baiting, it is necessary to uniformly stir the medicine and the base material so that the diseased fish can eat the medicine in the feed.
With the combination of Chinese and Western medicines, traditional Chinese medicine treatment of fish diseases lasted for a long time, with few side effects and low control costs. Western medicine has the characteristics of rapid drug efficacy and high cost. The incorporation of western medicine in Chinese herbal medicine can not only rapidly improve the efficacy but also reduce costs.
The use of baits is mainly prevention. Fish that live in the water are not easily noticeable by the people who are active. Once they are sick, it is difficult to diagnose timely and correctly, and treatment is also troublesome. Therefore, we should actively implement the guiding principle of "prevention first, and prevention from oversight."
Dosage control: After discovering the condition and selecting drugs, it is necessary to accurately calculate the dosage. The use of baits is generally controlled within 30 minutes to 40 minutes after feeding. It is better to estimate the total weight of fish that needs to be treated with drugs. In addition, it is necessary to calculate the consumption of other fish that are the same or similar to the diseased fish.
Feeding method: Before feeding the bait, stop feeding for one day and allow the fish to become hungry to ensure that the sick fish can eat more baits on the next day. When the weather is normal, the medicine baits are fed at 9:00 am (sometimes from 4 to 5 pm) in order to achieve the goal of preventing fish diseases. When the bait is to be administered, first cast some common food, wait until the healthy fish has eaten for some time, and then apply the bait so that the weak and sick fish can catch the bait, saving the cost and improving the curative effect. . Conditional drainable dosing, which can drain the opportunity to drain some of the virus, play a role in increasing oxygen, but also make the pool water shallower, narrowing the surface of the medication, so that the efficiency of drug baits increased.
In order to maintain the effective concentration of the drug in the fish, the bait should be fed 2 times to 4 times a day. Oral medicine baits must be fed continuously for 1 course of treatment as required or until the diseased fish ceases to die before continuing to feed for 1 to 2 days. Can not be stopped prematurely, so as not to cause the recurrence of fish pathogens that have not been completely eliminated.
Precautions: During the treatment of fish diseases and when the fish disease is cured, do not change the water, add water and fish in large quantities to avoid stimulating the fish body, causing the stress reaction to aggravate the condition or cause recurrence; the baits should be spread evenly to ensure the disease The fish eat enough doses; depending on the fish species, the feeding method is determined. For example, if there are more grass carp in the pool, when other fish are sick, to ensure that the sick fish eat enough baits, you can feed the grass first, and then cast it. Feed the bait; the bait is best to be fed when the storm is small, otherwise, because of the large waves, the bait that is sprinkled on the water will be quickly blown to the downwind, sinking to the bottom, and the sick fish will not be able to eat enough medicine. the amount. In the case of stormy waves, the number of feedings should be changed from 2 times a day to 4 times a day, and the amount of baits should be increased appropriately. Http://
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