Australian gems, or gems, are Australia's prestigious freshwater fishes. China has introduced aquaculture in recent years. The gemstone has beautiful appearance, mild temperament, strong disease resistance, rapid growth and delicious taste. At present, the market price of commercial fish is 80-90 yuan per kilogram, which is still in short supply, and the aquaculture efficiency is 5 times-6 times that of conventional fish. The market prospect is very promising. The gems, seedlings and breeding techniques are now described as follows:
Choose a pond with an area of ​​1.5 mu -3 mu and a water depth of 1.5 meters. It requires fresh water without pollution, pH value of 6.8-7.5, and dissolved oxygen of 4.5 mg/l or more. The clear pond was dried 15 days before stocking of the gems. Seven days before stocking, 350 kg of organic fertilizer was injected per acre of water, followed by 0.6 meter of water. A few days later, the breeding of clams, copepods, rotifers, and otters in the pond reached a peak, and this is the best time to put summer fry. Generally, fry are released when the pond water temperature reaches 20°C or more in the middle or late May. Fry specifications are about 2.5 cm in length. When stocking, the fry was first sterilized in a bowl containing 5% salt water for 10 minutes, and then the fish was poured into the cultivating pool. The amount of 2500 to 3000 tails per acre is appropriate.
Summer fish fry should be shallow underwater pool, on the one hand can increase the pond unit water body bait density, is conducive to fry feeding; the other hand, can increase the water temperature, help to promote the growth of fry. With the rapid growth of fry, the pool water is gradually deepened, and the water depth is added to 1.5 meters after 14 days. Change the water once every 7 days, and change the water volume every time for 1/5-1/6 of the pool water. Each morning, mid-night and evening patrols were conducted 3 times to observe fish feeding, activities, growth and pond water quality changes. The water pump is used to increase oxygen for 1.5 hours at 1 to 2 pm, and dissolved oxygen and pH value are regularly measured so as to timely adjust the feeding amount and do a good job of preventing fish diseases. Breeding practice has proved that after 30 days of careful cultivation, the size of the gem seedlings can reach 9.5 cm in length. In this case, the fry should be caught and transferred to adult fish culture tanks (boxes) in time.
Choose a pond with an area of ​​1.5 mu -3 mu and a water depth of 1.5 meters. It requires fresh water without pollution, pH value of 6.8-7.5, and dissolved oxygen of 4.5 mg/l or more. The clear pond was dried 15 days before stocking of the gems. Seven days before stocking, 350 kg of organic fertilizer was injected per acre of water, followed by 0.6 meter of water. A few days later, the breeding of clams, copepods, rotifers, and otters in the pond reached a peak, and this is the best time to put summer fry. Generally, fry are released when the pond water temperature reaches 20°C or more in the middle or late May. Fry specifications are about 2.5 cm in length. When stocking, the fry was first sterilized in a bowl containing 5% salt water for 10 minutes, and then the fish was poured into the cultivating pool. The amount of 2500 to 3000 tails per acre is appropriate.
Summer fish fry should be shallow underwater pool, on the one hand can increase the pond unit water body bait density, is conducive to fry feeding; the other hand, can increase the water temperature, help to promote the growth of fry. With the rapid growth of fry, the pool water is gradually deepened, and the water depth is added to 1.5 meters after 14 days. Change the water once every 7 days, and change the water volume every time for 1/5-1/6 of the pool water. Each morning, mid-night and evening patrols were conducted 3 times to observe fish feeding, activities, growth and pond water quality changes. The water pump is used to increase oxygen for 1.5 hours at 1 to 2 pm, and dissolved oxygen and pH value are regularly measured so as to timely adjust the feeding amount and do a good job of preventing fish diseases. Breeding practice has proved that after 30 days of careful cultivation, the size of the gem seedlings can reach 9.5 cm in length. In this case, the fry should be caught and transferred to adult fish culture tanks (boxes) in time.
Bulk of varicella vaccine,semi-Finished Products.It has good safety with low ratio in adverse reaction. And it has been exported to Bangladesh.
In 2008, BCHT successfully launched its product Varicella Vaccine, Live in China. In the following years, BCHT continuously committed to improving the product and led in 2010 removal of gelatin from adjuvant and extended the vaccine shelf-life up to 36 months which is the longest one in the world in 2011. And it has the following qualities.
Biotechnology Bioproducts Preventive,Final Bulk Medicine Preventive,Final Bulk Pharmaceutical Preventive,Vaccine Biological Products Preventive
Changchun BCHT Biotechnology Co. , https://www.ccbcht.com