Poultry farming is the process of raising domesticated birds such as chickens, ducks, turkeys and geese for the purpose of farming meat or eggs for food. Poultry are farmed in great numbers with chickens being the most numerous. More than 50 billion chickens are raised annually as a source of food, for both their meat and their eggs.[1] Chickens raised for eggs are usually called layers while chickens raised for meat are often called broilers.[1] In the US, the national organization overseeing poultry production is the Food and Drug Administration (FDA). In the UK, the national organisation is the Department for Environment, Food and Rural Affairs (Defra). Poultry Husbandry Tools,Water Nipple,Leg Ring,Food Feeder BAOYING CHENGDONG SOCIETY WELFARE FACTORY , http://www.icareartag.com
(6) Salinity The optimal salinity is about 30 (25~33).
(7) Light 500lx~1000lx.
(8) Feeding Bacillus dinoflagellates such as diatoms (P. tricornutum, N. niveus), Spirulina, or Platymonas, are fed. When the water temperature is lower than 10°C, the daily feeding amount (8~10) 104 cells/mL, and above 10°C, the feeding amount is gradually increased, and when it is 18°C, it is (15 to 20) 104 cells/mL every day, divided into 6~ 12 feedings.
(9) Change water twice a day, 1/3 to 1/2 each time.
(10) Absorb the bottom of the board every morning and evening.
(11) Pour the pool for 2 to 3 days.
(12) Inflatable continuous micro-inflation.
2. Stimulate spawning and hatching The progeny stem dry stimulation 4 to 6 hours, the water stimulation 0.5h, into the sea water at 26 ~ 28 °C, usually 2 hours after the pro-shellfish can spawn.
3. Larval breeding (1) Fertilized sperm and eggs self-fertilize in seawater. (2) Hatching density 20 grains/mL~50 grains/mL. (3) Water quality The water source complies with the provisions of GB11607 and the cultivation water complies with the provisions of NY5052.
(4) Water temperature 26°C~28°C.
(5) Salinity 25 to 35.
(6) Removal of excess semen When the pro-scallops are removed, inflate and inflate the foam on the water surface (the foam contains a large amount of sperm) to remove excess semen and increase the hatching rate.
(7) After hatching into D-shaped larvae, select floating larvae and culture in 10 pools per ml.
(8) Cultivation conditions 1 Water temperature: 24°C~26°C. 2 Salinity: 25 to 33. 3 light: 500lx or less. 4 Density: 8~10/ml or so. (9) Daily management 1 Feeding: The fertilized egg hatches to the D-shaped larva stage, which means that after 24 hours of fertilization, small algae such as gold algae can be fed. The daily feeding amount is 2104 cells/mL; with the growth of larvae, the amount and type of food fed should be gradually increased, reaching 8104 cells/mL in the later period, and feeding 6 to 8 times daily.
2 change the water: change the water twice a day, each time changing the water 1/3 ~ 1/2.
3 down the pool: the first time the pool should be 25 to 30 hours after fertilization, after every 3 days to 4 days once the pool.
4 Inflation: Continuously inflate with No. 100 or No. 120 aerosol.
4. Picking Seedlings When the larvae have eye spots and the shell length reaches 170 to 180 μm, the seedlings can be harvested.
(1) The device for picking the seedlings from the harvester consists of four parts, one part is the bracket, one part is the screen jacket, one part is the nylon rope connecting the bracket, and the last part is the falling stone. A picking device generally consists of 5 to 7 layers of seedlings, which are composed of a bracket and a screen jacket. The spacing between the two layers is 15 to 20 cm.
(2) Management of post-emergence management 1 Change of water: After the larvae are attached, use long flowing water to change the water, and the amount of water exchanged is generally 1 to 2 volumes.
2 Feeding: In the early period, the feeding of golden algae is mainly continued. In the later period, it is appropriate to feed the monilia such as Platymonas and Chlorella.
3 inverted pool: According to the actual situation, 7 to 10 days once the pool.
4 picking device finishing: juveniles grow to a certain size, the weakened adhesion, juveniles are easy to accumulate, every day should be promptly flattened.
5. During the 20-30 days after the larvae were metamorphosed, the juveniles grew to 500-800μm, the feeding and metabolic intensity were greatly increased, and the indoor hydroponic model could not meet the growth requirement of juveniles. Nurturing in the juvenile intermediate breeding facility.
(1) Indoor intermediate cultivation room The intermediate cultivation tank is a track-type cement pool with a depth of 1.0 to 1.5 m, a width of 1.0 to 1.5 m and a length of 25 to 30 m. One end of the cultivation tank is provided with a water inlet pipe, and the other end is provided with an overflow outlet pipe. At the bottom of the tank, the gas pipe is inflated.
The juveniles are put into the cultivation tank together with the attachment base. During the cultivation period, the water is kept flowing for a long period of time or 0.5 to 1 hour every half hour. Under the conditions of natural seawater breeding, the artificially cultivated bait is properly added to satisfy the juvenile pair. The demand for bait.
(2) Outdoor juveniles Nursing juveniles are cultivated for about 30 days in an indoor runway cultivation pond, and the shell length can grow to 2.0 to 3.0 mm. At this time the juveniles can be brushed off the attachment base and transferred to an outdoor pool for cultivation.
The outdoor pool should have a pond with a water depth of 1.0 or higher. The bottom of the pool is a sandy bottom, and the pool is convenient for drainage and drainage. During the cultivation of the outdoor pool, juveniles must maintain a certain amount of water.
Juveniles grow to a shell length of 0.5 cm or more, and can be transferred to the beach for seedlings.
(B) Shellfish and other shellfish breeding techniques in shallow water 1. Selection of breeding sites: Choose sea areas with small waves, stable sediments, and unimpeded tides; flat tidal flats, soft sediment, fine sand content of 65% to 80%; Industrial pollution, the relative density of seawater is 1.015~1.024.
2. Build-avoidance facilities: Closely building a farm is the key to ensuring that the Chinese pupae are not lost during the breeding process. In general, the breeding grounds are surrounded by double-layer nets, each layer is 5 meters apart, and the floor is separated by a single-layer fence. The commonly used materials for the building site are: mesh diameter 2.0~3.0cm, width 1.0~1.5cm; wooden stakes have two specifications: general length is 1.5~2.0m, diameter is 6.0~8.0cm, used to support mesh; Another kind of short pile with a length of 40cm and a diameter of 3.0~4.5cm is used to fix the buried mesh and the site for stringing and piling. The polythene cord is 30 wires, 45 wires or 60 wires to pass through the mesh. On both sides of the wide sides, they are wrapped around long piles to support the mesh. The method of burying the net: dig a trench of 25~30cm deep along the edge of the intended site, straighten the rope and straighten it into the trench, insert a short pile into the trench along every 0.8m to fix the mesh position directly. Into the sand, at this time the net out of the beach 0.7 ~ 1.2m, with long piles on both sides of the net in the "person" shape obliquely inserted into the beach 50 ~ 60cm, pile spacing 1.5m. Using the ropes that pass through the mesh, the “∞†knot is tied around the long pile to maintain the same height as the mesh. From one end, the stakes and the mesh form a “one†shape. The purpose of obliquely inserted long stakes is to prevent the barnacles and nets on the long piles from rubbing under the action of wind and waves after a large number of barnacles are attached, resulting in the phenomenon of broken ropes and cracked nets. This method of burying nets can also effectively prevent the loss of literary genres caused by typhoons and storms.
Wen Yan seed breed breeding technology [2]
(Continued from the previous period) (5) The temperature is raised from the natural water temperature by 1.0°C per day to 17 to 18°C, stabilized for 2 to 3 days, and then heated up to 20°C in the range of 0.5°C per day for 2 to 3 days. The temperature was raised to 24-26°C in 0.5°C increments every 2 days, and it was stable for several days. Observing the feeding condition of pro-shellfish, when the amount of pro- bellied food is reduced, it is predicted that pro-shellfish may lay eggs. The parental incubation period is generally 40 to 60 days.