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According to him, influenced by the favorable factors of fish prices, the area of ​​raw fish culture in Xingtan, Longjiang, Leliu, and Lecon, etc. in Shunde has expanded, and a single town of Danxingtan has increased by about 10%. It is estimated that this year will be entirely Shunde's raw fish breeding area will reach 16,000 mu.
Hybrid seedlings extensively cultured
Choose seedlings need to be cautious
Yurong, a township of Yurong, a triangular town in Zhongshan City, has been engaged in the breeding and breeding of raw fish for many years. In 2000, he began to produce hybrid fry. He told reporters that at present, there are mainly three kinds of raw fish cultured in China. One species is spotted mites, which are mainly distributed in Guangdong, Guangxi, and Hong Kong and Macau, also known as “Guangdong and Guangxiâ€, and Wuyi, mainly in Hunan and Hubei. Such as the Yangtze River Valley, also known as "two lakes raw fish." The third kind is the hybrid raw fish, which uses the Chinese black baboon as a parent hybrid produced by crossing the male parent with the candied turtle.
“The growth rate of hybrid seedlings is very fast. As long as 3 centimeters of ponds can grow to an average of 1 catty for 100 days, and up to 2-3 catties for 6 months, the transport survival rate, meat quality and taste are all better than those of the parents. In the Pearl River Delta region, hybrid fish are commonly cultured." Liang Guihong said so.
"But now hybrid seedlings are also fake and shoddy." Liang Guihong said: "Some bad seedlings will match the raised motherfish in the fish pond with Wuqiu and breed the so-called 'second generation seedling' as a hybrid seedling. For farmers, the breeding effect is very poor."
According to him, "second generation seedlings" have a high feed coefficient, a slow growth rate, and many diseases. The economic benefits are far inferior to the hybrid generation. Since raw fish farmers usually buy black sesame seedlings, it is difficult to distinguish between two kinds of seedlings.
Liu Liangping of Xingtan believes that in the selection of raw fish splashes, swim groups can clearly be considered good seedlings; conversely, too scattered, too stratified, not a pile of inferior seedlings.
The seedling stage determines the effectiveness
Survival rate is the key
Although the production of raw fish is very productive, the yield per acre can reach 9,000-10,000 pounds. However, if the seedlings do not pay attention to pest control and domestication, the survival rate will be very low and the economic benefits will be greatly reduced.
“Two or three days prior to the release of the pond, the insecticide should be used to kill the insects with a bit of copper sulphate; 4-5 days after the pond must be killed again. At the same time, some fresh water spiders (zooplankton) should be fed. After 2-3 days, it will be converted into chilled fish paste and fed for 6-7 days until 4 cm of fry, must start to feed with puffed feed. The whole cycle of 17-18 days, if successful, the later culture will be very difficult. Liu Liangping briefed reporters on his experience in seedling cultivation.
It is understood that in the past two years, the price of raw fish splashes has been relatively stable, and 10,000 tails are generally between 400-450 yuan. However, the low-temperature and rainy weather in recent days has made it more difficult to cultivate seedlings. Many farmers have already put down the pond's water plants and have already died. They need to make up the seedlings and increase the cost of breeding.
Liang Guihong also admits that it is very troublesome to feed and feed tame during the seedling period. It is recommended that 2-3 sub-separation ponds should be conducted in this process once a week.
“The raw fish fry have habits of mutual sustenance, and when the bait is not enough or the size difference is obvious, it is more likely to occur. Generally, when the fish are bred and cultured to 10-12 cm, it is relatively stable. If the seedlings work, the survival rate can be from 20%. -30% to 60%." Liang Guihong added.
Raw fish: Selectively guard against "second generation seedlings"
Every year, the raw fish will lose some points before and after Qingming. This year is no exception. Ten days ago, a pound of Tangtou fish also received 7.2-7.5 yuan. Now it has fallen to 6.7-6.8 yuan. The reason seems to be very simple. The proportion of pregnant fish is increased. "This price is also good, and farmers still have more than one gross profit. It is estimated that they will rise again in mid-May," Liu Liangping of Xingtan in Shunde told reporters.