Black Stork is commonly known as blackfish, widely distributed, fast growing, strong vitality, has a certain value of medicinal health care, suitable for intensive farming, and has a broad market prospect.
With the rapid development of Wuyi aquaculture, the lack of natural food has become an obstacle to the cultivation of Wuyi. Therefore, we choose palatable, high-quality extruded pellet feeds as substitutes for fresh animal baits to meet the needs of the development of black quail breeding. However, before feeding the extruded pellet feed, it is necessary to tame the tadpoles to feed the natural bait or chilled fish and to feed artificial compound feeds to facilitate large-scale farming. According to the farming experience in recent years, although the domestication can be carried out at any stage from seedlings to adult fish, the domestication is best when the seeds are 3 cm to 5 cm in length. When the black frog grows to more than 3cm, its feeding and digesting organs have been basically grown and improved. The feeding habit has been the same as the adult fish. At this time, the survival rate is high and it is easy to operate. Attention should be paid to the method of domestication. If the method is improper, not only the survival rate of seedlings can not be guaranteed, but also the size of individuals can be uneven and the phenomenon of similar disability can occur. Through several years of practice, the author has concluded a set of tame food methods that are summarized below for reference by the majority of producers.
First, the acclimation conditions and methods
1. Domestication facilities Domestication pools can range from 100 square meters to 1,500 square meters, and are generally outdoor earthen ponds with pool depths of 2.0m to 2.5m. There is a perfect intake and drainage system, and there is no pollution from water sources. Inlet and outlet openings are designed to prevent escape. The feeding frame is set according to the size of the pond, and the feed frame is made of square bamboo or rectangular type, and the pile is used to fix the position. At the same time, the frame can float up and down as the water level changes. A 20cm-high 30 mesh to 40 mesh net is fixed around the inside of the frame. The upper edge of the mesh is fixed on the bamboo by a wooden strip, and the lower edge is tied with a small stone to make a sinker. Generally about 2 acres of pond, set a 3m3m bamboo frame can be, generally located near the inlet.
2. Seedlings of the year were planted with seedlings of about 3cm in length and 20,000 to 30,000 per acre. The seedlings were soaked with 3% salt water for 15 minutes to 20 minutes. Seedlings don't feed on the day after the pond.
3. Domestication method to maintain the state of micro-flowing water. First, the chilled fish paste is made into dough and fixed on the water surface of the feed box. At the same time, water is poured to form a water stream and sound stimulation. The fish is fed and the feeding amount is preferably 1.5 hours to 2 hours. Twice a day, feed regularly. After 3 days, the puffed wolfberry puffed pellet feed can be mixed into the chilled fish paste to form a lumps in the feed box, and after 7 days to 10 days, the feed can be added over 80%. Finally, you can fully ingest the extruded pellet feed.
Second, domestication technology points
1. At the appropriate temperature for the specification of the Chinese wolfberry seed, the seed of different fishes has the most suitable domestication specifications. Generally, the smaller the individual, the easier the domestication. The larger the individual, the longer it takes. According to the experience, the best domestication time for the Chinese wolfberry seedlings is 3 cm to 5 cm in length.
2. The induction of acculturation by concentrated feeding uses microfluidic water stimulation, using the characteristics of the favorite flow of the seedlings of T. sinensis, inducing fish clusters beside the inlet, and the feed box is located near the inlet, facilitating the establishment of conditioned reflexes in fish clusters. When feeding, hand-dip water to form a stream of water and sound stimulation, so that the fish heard the sound came to eat.
3. Domestication should be followed step by step from the intake of chilled fish slurry to the feeding of pelleted food, generally from the time of refusal to forced feeding, and finally the habit of feeding. The first step is to use chilled fish paste to attract fish to concentrate on food intake and achieve normal food intake. In the second step, the proportion of added pelleted food in fish paste should be increased from low to high, and gradually over-proportioned; Fully feed the pelleted feed. Before feeding, add appropriate amount of water to soften the feed. Sometimes it needs to be repeated. Domestication can succeed.
4. Prevent mutual food, increase survival rate Feeding enough feed is one of the effective ways to prevent mutual food. If there is a big difference in the seed size, the stocking ponds should be screened in time, and the same fish cultured in the same pool. Under normal circumstances, sorting once a month.
5. During the domestication of water quality management, due to the feeding of chilled fish paste, the water quality tends to be deteriorated. The method of micro-flowing water is used to keep the water fresh and the dissolved oxygen is kept above 5 mg/L.
With the rapid development of Wuyi aquaculture, the lack of natural food has become an obstacle to the cultivation of Wuyi. Therefore, we choose palatable, high-quality extruded pellet feeds as substitutes for fresh animal baits to meet the needs of the development of black quail breeding. However, before feeding the extruded pellet feed, it is necessary to tame the tadpoles to feed the natural bait or chilled fish and to feed artificial compound feeds to facilitate large-scale farming. According to the farming experience in recent years, although the domestication can be carried out at any stage from seedlings to adult fish, the domestication is best when the seeds are 3 cm to 5 cm in length. When the black frog grows to more than 3cm, its feeding and digesting organs have been basically grown and improved. The feeding habit has been the same as the adult fish. At this time, the survival rate is high and it is easy to operate. Attention should be paid to the method of domestication. If the method is improper, not only the survival rate of seedlings can not be guaranteed, but also the size of individuals can be uneven and the phenomenon of similar disability can occur. Through several years of practice, the author has concluded a set of tame food methods that are summarized below for reference by the majority of producers.
First, the acclimation conditions and methods
1. Domestication facilities Domestication pools can range from 100 square meters to 1,500 square meters, and are generally outdoor earthen ponds with pool depths of 2.0m to 2.5m. There is a perfect intake and drainage system, and there is no pollution from water sources. Inlet and outlet openings are designed to prevent escape. The feeding frame is set according to the size of the pond, and the feed frame is made of square bamboo or rectangular type, and the pile is used to fix the position. At the same time, the frame can float up and down as the water level changes. A 20cm-high 30 mesh to 40 mesh net is fixed around the inside of the frame. The upper edge of the mesh is fixed on the bamboo by a wooden strip, and the lower edge is tied with a small stone to make a sinker. Generally about 2 acres of pond, set a 3m3m bamboo frame can be, generally located near the inlet.
2. Seedlings of the year were planted with seedlings of about 3cm in length and 20,000 to 30,000 per acre. The seedlings were soaked with 3% salt water for 15 minutes to 20 minutes. Seedlings don't feed on the day after the pond.
3. Domestication method to maintain the state of micro-flowing water. First, the chilled fish paste is made into dough and fixed on the water surface of the feed box. At the same time, water is poured to form a water stream and sound stimulation. The fish is fed and the feeding amount is preferably 1.5 hours to 2 hours. Twice a day, feed regularly. After 3 days, the puffed wolfberry puffed pellet feed can be mixed into the chilled fish paste to form a lumps in the feed box, and after 7 days to 10 days, the feed can be added over 80%. Finally, you can fully ingest the extruded pellet feed.
Second, domestication technology points
1. At the appropriate temperature for the specification of the Chinese wolfberry seed, the seed of different fishes has the most suitable domestication specifications. Generally, the smaller the individual, the easier the domestication. The larger the individual, the longer it takes. According to the experience, the best domestication time for the Chinese wolfberry seedlings is 3 cm to 5 cm in length.
2. The induction of acculturation by concentrated feeding uses microfluidic water stimulation, using the characteristics of the favorite flow of the seedlings of T. sinensis, inducing fish clusters beside the inlet, and the feed box is located near the inlet, facilitating the establishment of conditioned reflexes in fish clusters. When feeding, hand-dip water to form a stream of water and sound stimulation, so that the fish heard the sound came to eat.
3. Domestication should be followed step by step from the intake of chilled fish slurry to the feeding of pelleted food, generally from the time of refusal to forced feeding, and finally the habit of feeding. The first step is to use chilled fish paste to attract fish to concentrate on food intake and achieve normal food intake. In the second step, the proportion of added pelleted food in fish paste should be increased from low to high, and gradually over-proportioned; Fully feed the pelleted feed. Before feeding, add appropriate amount of water to soften the feed. Sometimes it needs to be repeated. Domestication can succeed.
4. Prevent mutual food, increase survival rate Feeding enough feed is one of the effective ways to prevent mutual food. If there is a big difference in the seed size, the stocking ponds should be screened in time, and the same fish cultured in the same pool. Under normal circumstances, sorting once a month.
5. During the domestication of water quality management, due to the feeding of chilled fish paste, the water quality tends to be deteriorated. The method of micro-flowing water is used to keep the water fresh and the dissolved oxygen is kept above 5 mg/L.
Venlo structure is a popular one at present. This architecture uses horizontal girder as main bearer, forming a stable structure with columns. There is consolidation between horizontal girder and column, and hinge is used to connect column and foundation.
In Venlo Greenhouse, foundation is made of reinforced concrete and the side wall is made of brick or reinforced concrete plate. The steel frame always use hot dip galvanized light steel. Roof beam adopts horizontal girder structure and using herringbone connection. The horizontal girder bears 2 or more roofs, which is made of aluminum alloy. This material is used as roof structure material and also glass inlay material. Other beams using gutter style to minimize the section. Delighting material of the roof and side wall using the hollow double-layer or multilayer PC board.
PC board is mainly made of PC/PET/PMMA/PP materials, it need sun screen coating to resist ultraviolet resist and ageing, and it is also required to be anti condensation and antidrug.
As a kind of light material, use PC board can greatly reduce the weight of greenhouse structure, and corresponding reduced the size of the steel frame, which saving the cost of steel.
Pc Board Venlo Greenhouse,Venlo Greenhouse,Venlo Type Pc Sheet Greenhouse
JIANGSU SKYPLAN GREENHOUSE TECHNOLOGY CO.,LTD , http://www.spgreenhouse.com