The main pond raises the pond to raise the number of young shrimps, which can control the number of young shrimps in the autumn and improve the commercial specifications of the shrimps. At the same time, the sick shrimps and diseased fish can be used to reduce the occurrence of diseases, remove wild fish, and improve feed utilization. rate.
The pond was dredged and exposed to the pond 1 month before the pond was ready for planting. 15 to 15 days prior to stocking, the young shrimps were disinfected with 150-200 kg of lime per acre. About 7 days before the stocking of young shrimps, 100 to 200 kg of basal fertilizer per acre is used to cultivate water quality.
Prawns stocked with lively, full-bodied, egg-bearing shrimp with a body length of 5 cm or more. It will be launched in May and August at the peak of spawning of green shrimp. Put 8 to 10 kg per mu.
鳗鲡 鳗鲡 鳗鲡 选择 选择 选择 选择 选择 选择 选择 选择 选择 选择 选择 选择 选择 选择 选择 选择 选择. About 40 days after the first batch of shrimps were stocked, the larvae were stocked with stocking densities of 30-50 fish per mus, and the seedlings were disinfected with potassium permanganate solution before stocking.
The fry stockings were selected to be non-invasive, lively and healthy, and they were put in a small amount at the end of March to regulate water quality.
When the feed water temperature is 12～22°C, it is fed once a day and the feeding time is 2～3 pm. When the water temperature is above 23°C, feeding twice a day, feeding time is from 6 to 8 in the morning and from 4 to 6 in the afternoon. The feed is mainly composed of shrimp feed. The amount of feed is mainly based on the growth conditions, specifications, water quality, and weather of the shrimp. It is based on the principle that no food residue is left on the food table.
Water quality adjustment From late autumn to early spring, the pond changes water once a month. The amount of water changed is 10% to 20% of the pool water every time. In the evening and at noon, the aerator is switched on. At noon, the start-up time is 2 to 3 hours. On the eve of a typhoon and thunderstorm, it is possible to appropriately extend the start-up time of the aerator. When the pH value of the pool water is less than 7, the whole pool can be splashed with quicklime, and the pH is adjusted between 7.5 and 8.5.
The general principle of disease control for disease prevention and control is “to prevent the main and combine the prevention and controlâ€. Thoroughly sterilize the clear pond and exercise it carefully to avoid injury to fish. Do not stock sick fleas and young shrimps. Regularly use disinfectant drugs to improve water quality.
The catch is generally spring shrimp catch in April to early July, August break; fall catch shrimp in September to November. At the end of the year, dry ponds catch crickets.
The pond was dredged and exposed to the pond 1 month before the pond was ready for planting. 15 to 15 days prior to stocking, the young shrimps were disinfected with 150-200 kg of lime per acre. About 7 days before the stocking of young shrimps, 100 to 200 kg of basal fertilizer per acre is used to cultivate water quality.
Prawns stocked with lively, full-bodied, egg-bearing shrimp with a body length of 5 cm or more. It will be launched in May and August at the peak of spawning of green shrimp. Put 8 to 10 kg per mu.
鳗鲡 鳗鲡 鳗鲡 选择 选择 选择 选择 选择 选择 选择 选择 选择 选择 选择 选择 选择 选择 选择 选择 选择. About 40 days after the first batch of shrimps were stocked, the larvae were stocked with stocking densities of 30-50 fish per mus, and the seedlings were disinfected with potassium permanganate solution before stocking.
The fry stockings were selected to be non-invasive, lively and healthy, and they were put in a small amount at the end of March to regulate water quality.
When the feed water temperature is 12～22°C, it is fed once a day and the feeding time is 2～3 pm. When the water temperature is above 23°C, feeding twice a day, feeding time is from 6 to 8 in the morning and from 4 to 6 in the afternoon. The feed is mainly composed of shrimp feed. The amount of feed is mainly based on the growth conditions, specifications, water quality, and weather of the shrimp. It is based on the principle that no food residue is left on the food table.
Water quality adjustment From late autumn to early spring, the pond changes water once a month. The amount of water changed is 10% to 20% of the pool water every time. In the evening and at noon, the aerator is switched on. At noon, the start-up time is 2 to 3 hours. On the eve of a typhoon and thunderstorm, it is possible to appropriately extend the start-up time of the aerator. When the pH value of the pool water is less than 7, the whole pool can be splashed with quicklime, and the pH is adjusted between 7.5 and 8.5.
The general principle of disease control for disease prevention and control is “to prevent the main and combine the prevention and controlâ€. Thoroughly sterilize the clear pond and exercise it carefully to avoid injury to fish. Do not stock sick fleas and young shrimps. Regularly use disinfectant drugs to improve water quality.
The catch is generally spring shrimp catch in April to early July, August break; fall catch shrimp in September to November. At the end of the year, dry ponds catch crickets.
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