Taiwan loach is mainly distributed in the middle and lower reaches of the Yangtze River and in the northern part of Taiwan Island. Compared with local loach, it has the advantages of rapid growth rate, low feed coefficient, and strong disease resistance. In addition, Taiwan's loach has a short breeding cycle, which can reach a specification of 20 tails/kg in five months, but it is not inferior to local loach in terms of texture and meat quality.
Taiwan's loach is mainly cultured in the southern region. Because of its good breeding advantages and market benefits, the north has also begun to breed, even in the high-cold areas like the northeast. What are the problems with the breeding of large mud in Taiwan imported from the south for farmers in the north?
The first is that the quality and quantity of loach seedlings cannot be guaranteed very well. The hatching rate of loach itself is low, coupled with the limitations of the climate conditions in the north, both the incubation period and the growth period will be affected, which will cause farmers to The successful breeding of large numbers of seedlings was purchased, making it possible for non-standard manufacturers to take advantage of it and sell them in order. The northern farmers are unfamiliar with the methods of breeding loach in Taiwan and preventing predators from disease, which affects the survival rate and yield. The unobstructed marketing of products is also one of the important issues in which the income of fishermen cannot be guaranteed.
Summarized some of the techniques for breeding in the north for everyone to discuss.
Pond and seed delivery
The ponds that have been cultivated in Taiwan are generally selected as shallow-water ponds with a width of about 20-30 m, a length of about 100 m, and a shallow pond that is longer than the width. The depth of water injection should be about 1m, and the proportion of pond grass should not be too high. If not, it would be better, so that it can reduce the predators. Taiwan's loach is good at escaping, so it is necessary to set a filter at the inlet and outlet of the fish pond, and also to establish a fence to prevent muddy escaping.
Lime or bleaching powder can be thrown into the clear pond after the whole pond is spilled. The main method of operation is the same as the cultivation of other fish. Usually about 15 days after clear ponds can be placed seedlings, stocking density need to be scientific and reasonable arrangements, it is recommended to put about 3cm specifications per mu about muddy seedlings about 20,000, select vigor and specifications of the same seed, and can be set Other filter-feeding fish use biological regulation of water quality to prevent algae outbreaks.
Management of aquaculture water quality
The requirements for water quality in loach in Taiwan are not very harsh, and chemicals or other pollutants that do not exceed the standard can be cultured. Taiwan's loach has strong ability to tolerate low oxygen and high ammonia nitrogen environment and is suitable for farming in fertilizers. Therefore, a certain amount of organic fertilizer can be applied, and the transparency of the pool water can be maintained at about 25cm. Regularly monitor the water quality of aquaculture ponds, change water disinfection regularly, and improve sediment quality.
Feeding
Mud feeding is more greedy, and the loach is a combination of intestinal respiration. Therefore, the amount of feed must not be so large that the loach can cause intestinal damage due to overfeeding. It is advisable to feed the crushed material one month before the seedlings are dropped and to feed the small grain feeds one month later. The quality of feed requires protein-quality nutritionally balanced full-priced feeds. Taiwan Loach is a bottom-level fish, Xi Jing, then the choice of feeding time in the morning and evening is better, the water temperature is controlled at 25 degrees Celsius is appropriate.
The key to the success of Taiwan's loach breeding is day-to-day management, taking time to inspect the ponds, observing loaching activities and feeding conditions, and checking the muddy loquats with poor vitality. Monitor the water quality at any time, especially the muddy water body is more fertile, it is more likely to cause the fish to lose oxygen and float, and timely inject new water to avoid flooding the pool. Anti-escape and natural predators are also the key to cultured loach. Heavy rain or heavy rain makes the water body elevated, and it is extremely prone to cause muddy escaping. It is usually better to check whether the anti-escape equipment is in good condition. At the same time, in order to prevent muddy natural enemies, we should also build Skynet above the pond. , fence around to avoid waterlogging, frogs, rodents, and birds invading the mud.
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