In the past two years, the market for most aquaculture species has continued to be sluggish, and even fell below the cost line. At the same time, the *** of feed raw materials has led to a serious imbalance between income and expenditure. The breeding boss was miserable, and there was a large area of empty ponds and the surrender of rent.
Stimulated by the high returns of feed mandarin fish farming, some farmers have begun to try feed mandarin fish farming. However, due to the immaturity of breeding technology, the domestication rate and the success rate of breeding are low. It is understood that the success rate of domestication of feed mandarin fish fry this year is only 2-3 percent, and the success rate of adult fish breeding is less than 4 percent. In view of the current market of mandarin fish, live bait mandarin fish breeding is basically no benefit at all, and the profit of feed mandarin fish can reach 10 yuan catty. According to the current survey, it is expected that more than 3 percent of live bait mandarin fish farmers will switch to feed mandarin fish next year.
To raise this fish well, you need to know the common problems encountered in the breeding process, and next, the author will work with the breeding boss from many aspects to deal with and avoid risks.
Parasites
Under normal circumstances, feed mandarin fish farming will not interbreed other species of fish, and interbreeding will cause the phenomenon of chasing, and there will be no food and turbidity in water quality. Mandarin fish is a demersal fish, parasites occur frequently in the breeding process, parasitic gill worms, oblique tube worms, ring worms, will cause gill rot symptoms, resulting in poor eating of fish or even stop feeding;Polycondensation worms, which mainly parasitize the fins of fish, cause rotten fins;Anchor fleas parasitic on the fins and body surface of fish, causing secondary infection.
When treating, special drugs should be used to kill, pay attention not to use drugs that are too irritating, and pay attention to weather changes and control the amount of pesticides for insecticide.
Water quality issues
The content of ammonia nitrogen and nitrite in aquaculture water is easy to be high, and the content of ammonia nitrogen is particularly prominent. The protein content in mandarin fish feed is high, and a large amount of nitrogen content is excreted after feeding, resulting in the accumulation of a large amount of ammonia nitrogen in the middle and late stages of culture. High nitrite can also be passedThe bottom is oxygen-richDetoxification and lowering YabaoRapid degradation. However, after feeding a large amount of feed every day, once the ammonia nitrogen exceeds the standard, its content will rise day by day, and it is difficult to return to the normal range in the short term, and can only be gradually controlled by water change, material control, bottom modification, and bacterial supplementation.
Due to the non-filter-feeding fish, it is easy to break out of cyanobacteria in the early stage, and the pH exceeds the standardRaise water treasure + em god dewTreatment, in the middle and late stages, it is easy to break out cladoperans, consume a large amount of dissolved oxygen, and kill them in time.
Visceral problems
Enteritis:Generally, it is caused by excessive water quality, excessive stress, and bacterial diseases, and the symptoms are treated according to specific problems.
Liver lesions:Mandarin fish has poor glucose metabolism ability, and long-term feeding is prone to yellow liver, white liver, and flower liver, so it is taken internallyMeCan 2+ Glycolipid balance, a group of 80 kg of feed.
Disease
Bacterial diseases:The main manifestations are body surface and intestinal bleeding, which are generally treated with traditional Chinese medicine preparations.
Viral Diseases:It mainly includes mandarin fish infectious spleen and kidney necrosis virus, mandarin frog iridescent virus, mandarin fish rhabdovirus and viral neuronecrosis virus, among which the first two viruses are the most serious. The pathogenesis of these diseases is mainly related to various stressors. At present, there is no specific treatment plan, so the main focus is to strengthen daily management to reduce the risk of morbidity.
How to refine management
1. Water quality managementDikang No. 1(2 acres of bags)+The bottom is oxygen-rich(10 acres of bags), 1 time in 7 days, bottom modification, oxygenation, detoxification, and living water are four effects in one, with good bottom quality and natural insect pests.
Anwensu (3 acres of bags) + gold carbon treasure (20 acres of barrels) + EM Shenlu (5 acres of bottles)., once every 7 days, high carbon and high bacteria, effectively control the content of ammonia nitrogen and nitrite in the water, stabilize the water quality, reduce stress, and enhance the immune resistance of the fish.
2. Physical fitness management:Take internallyMeCan No. 1 + MeCan No. 2 + MeCan No. 6+ Glycolipid balance, a group of 80 kg of feed, a course of treatment for 5-7 days, 2 courses per month. It improves the liver, intestines, immunity and glucose metabolism of mandarin fish in an all-round way.
3. Water quality and parasite testingOnce every 7 days, in case of poor feeding, slow swimming fish or changing weather on the water surface, it should be detected in time, and problems should be dealt with in time.
4. Feeding:When the fish are fed poorly due to sudden changes in weather, deterioration of water quality, or disease, it is necessary to control the amount of fish feeding. At the same time, it is necessary to feed the fish according to the feeding situation of the fish every day to reduce waste and avoid the deterioration of water quality. In addition, it is also necessary to pay attention to the spit after feeding of mandarin fish, and it is important to maintain good water quality and maintain the health of the fish.
Through this article, I hope that the feed mandarin fish farming boss can have a deeper understanding of the importance of its daily management, and I hope that all the farming bosses can breed smoothly.