The golden pheasant is a pupa and pupa hybrid species of the genus Pheasantidae, Acipenseridae, Cyprinoideae, Eucalyptus and Eucalyptus. It is a fine breed developed by the combination of conventional breeding and biotechnological breeding in the state-level Tianjin Changxin Aquatic Products Factory. At present, the National Aquatic Products and Pedigree Approval Committee has been applied for. The species is shaped like a squid with a tall body and small head. The back of the head is raised and the body is thick and plump. There are a pair of short kisses, no jaw whiskers, and the whole body is covered with squama and crystals. The sidelines are 31-34 pieces. Yellow gold, very beautiful. The species has been cultivated in parts of Tianjin, Hebei, Shandong, Liaoning, Inner Mongolia, Qinghai, Ningxia, and Jiangsu provinces, with significant yield increase, ultra-fast growth, low oxygen tolerance, and strong resistance to disease. Low temperature, long-distance transport, high feed conversion rate, delicious meat, high nutritional value. Since 2001, after 7 years of promotion experiments, the promotion area has reached 6.3 million mu, and 510 million tails have been popularized. In the past few years, a set of relatively comprehensive high-yield, high-quality, high-efficiency, and environmentally-friendly intensive cultivation has been concluded. technology. The introduction of aquaculture technology is as follows, aiming at providing references for the breeding of golden oysters.
First, pond preparation
The golden dragonfly's adaptability is extremely strong. It does not require strict pond environment and water quality. Generally, it is suitable for 5 mu -10 mu. The pond has enough water, good water retention performance, convenient drainage and drainage, no pollution, flat bottom, mud 10 cm - 15 cm, each pond is equipped with a bait feeder, and a 3.0-kw impeller-type aerator is provided for every 5 mu - 10 mu.
In the first half of the month, the fish was thoroughly treated with quicklime or bleaching powder, and the silt was turned with muddy wood and weathered and decomposed. After 3 to 5 days of cleaning, the water inlet is filled with 80 mesh sieve to prevent wild fish and other enemy organisms from entering. The pond water level is between 0.6 and 2.5 meters.
Second, seed delivery
In the northern regions, seedlings are generally introduced before and after the May 1st, and the southern region is generally slightly earlier. Under normal circumstances, when the water temperature reaches 17°C-20°C, from the waterfowl to the summer flowers, 200,000-600,000 watercress can be stocked per 667 m 2 of effective water surface; the stocking density of the commercial fish from the summer flowering year is 667 square meters of effective surface water stocking 2 cm -3 cm of summer flowers 4600 -4700 tail, the other with the same age of 200 fish -260 tails; from summer flowers to autumn film (fish) stocking density should be based on For individual needs, the market can stock 13,000 to 38,000 fish per 667 square meters of effective water surface. The same age of 220 to 280 tails of squid are to be stocked; stocking density from fish species to commercial fish is effective every 667 square meters. The surface of the fish can be stocked with 3300 tails - 4000 tails of 60 g - 200 g fish, and the same age of 220 tails - 260 tail fish. Seed should choose a healthy, neat specifications, complete scales, fins, individuals without illness and injury, seedlings should be soaked with 30 mg-40 mg per liter of salt water before soaking disinfection for 5 minutes -10 minutes, the temperature difference should not be stocking More than 4°C.
Third, aquaculture management
(1) Water quality regulation
The water quality of ponds for raising golden pelicans is the same as for other conventional food-eating fish. The first is the water level adjustment. It is advisable to keep it small in the middle and high in the middle of the year. In other words, in the early spring, when the temperature of the culture pond rises to 12°C-18°C, regardless of feeding water, fish species or commercial fish, in order to speed up the pool water temperature in this phase, the pond water level should be lowered appropriately. For example, in ponds that cultivate water blooms, the pond level should not exceed 0.6 meters when the fish is released. For ponds that raise fish species or commercial fish, in order to eat early, regulate the water temperature, the pond water level at this stage should not be higher than 1.0m - 1.2m. After the temperature of the culture pond rises to an ideal value of 20°C or higher, the pond should be raised as appropriate. Water level. In midsummer, when the water temperature of the pool is as high as 21°C to 30°C, raise the water level in the rearing pond to the highest point of 2.5 meters. In the autumn, due to the change of climate, the temperature of the breeding pond began to decline. In order to keep the water temperature of the breeding pond slowing down, the water level of the breeding pond should be adjusted accordingly. The water level should be gradually reduced from 2.5 meters to 1.5 meters until the winter. The pool level is raised to a maximum of 2.5 meters to ensure safe wintering of the fish. Followed by water quality regulation. For artificially-cultivated ponds, as the water temperature in the rearing ponds gradually increases after winter, the amount of feeds increases, and the amount of excreted material in the waters of the rearing ponds increases correspondingly. In addition, the positive plankton blooms and rapid decomposition of humus occurs. During this period of time, the water quality of the culture ponds can easily be turned into fertilizers, resulting in an increase in the oxygen consumption factor in the aquaculture pond water. At this time, the water quality of the aquaculture ponds should be timely adjusted. The method is to add new water or replace some old water every 15 days to 20 days during the spring and summer period. During the summer, according to the actual situation of the aquaculture pond, new water should be added or old water should be replaced every 10 days or so; when the water quality of the aquaculture pond gradually becomes stable in the autumn, water or water exchange opportunities should be taken in due course. Reduce the water level in the culture pond in an appropriate amount. During the entire cultivation period, water quality is maintained for a long period of time in terms of fatness, livelihood, tenderness, and coolness. The algae in the control water is mainly composed of diatoms and green algae such as diatoms and green algae. The water body is oily green and light brownish brown. The water quality of the pond was determined by measuring the dissolved oxygen, ammonia nitrogen, pH, and nitrite content of the pool water on a regular basis.
(2) Feeding of bait
Golden pheasants have a longer feeding time than other oysters and squid. They feed almost all the year round. When the temperature of the culture pond rises to 6°C, they should start feeding on sunny days. No matter which method is adopted, they should be voted. Give 3 minutes to 5 minutes before feeding and insist on feeding from low to high, from slow to fast, and then from at least, feeding from the fast to the slow feeding principle, the number of feedings from the spray to the summer flowering stage Take 3 to 4 times. Daily 7:30-9:30, 11:00-12:30, 2:30-4:00, 6:30-8:00 am; or 8:00-9:30 am, noon 12:30 - 2:00 pm, 5:00 - 6:30 for feeding, the feeding time should be controlled within 25 minutes, and all the feeds to be cast should be finished.
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