Acipenser Schrencki is native to the Heilongjiang River basin and is a freshwater settlement fish with high economic value and feeding potential. In 1998, it was introduced into the southward aquaculture of Castanopsis kawakamii seedlings in order to use the superior climatic conditions in the South, excellent water quality, and rich biological feed to promote its rapid growth, and to develop a new and excellent aquaculture species. After 6 months of feeding, the maximum weight is 0.78kg. The main technical measures are now described below.
1. Breeding conditions The aquaculture pond is a cement pool rebuilt on the basis of the original European oak breeding facilities, with an area of ​​15m15m and a depth of 1m. Each pool has a waterwheel type aerator. The water source is the next surface sand filtration water, fresh water, no pollution.
2. Thoroughly clear the ponds after stocking and stocking, disinfect with potassium permanganate solution of 300.000001, and put 3400 tails of Amur sturgeon in a total of two ponds, with a stocking density of about 9 tails per square meter. On the day of stocking, fish and water bodies should be disinfected.
3. Technical measures 1 Feeding and feeding Individuals should be fed silkworms before they grow to 10-12cm, and then use feeding baits to transform their feeding habits until they can consume food. Feeding adopts the principles of qualitative, quantitative, and timing. Qualitative: Silkworms are sterilized with salt and antibacterial drugs after rinsing to prevent the disease from entering the mouth; the size of the formulated baits should be palatable, the nutrition should be comprehensive, the rational ratio should be emphasized, and some can be added to promote growth and improve disease resistance. Nutritional agents. Quantitative: According to the body weight according to a certain feeding rate, the fish body weight 5-200g, the bait rate is 10%-4% (with bait); the fish body weight 200g-1000g, the bait rate is 4%-2.5%, with It is advisable to eat within 15 minutes. Timing: Live baits should be fed 6-8 times a day. The bait should be fed 3 to 4 times a day. To be regular, do not change the feeding time.
2 Water quality management changes the water once a day, changing the amount of water according to individual size and seasonal changes, usually 50% -100%. Keep the water fresh and keep the dissolved oxygen in the water above 5mg/L. Wash the pond once every other day, measure the water temperature every day, measure the physical and chemical factors of water regularly, and make records. In the meantime, it is necessary to take a serious look at the pool, and if any abnormalities are found, it is necessary to analyze the causes in time and take effective measures.
3 Water temperature management Water temperature is the key to the growth rate of Amur sturgeon. According to observation of aquaculture practices, the suitable water temperature for Amur sturgeon is 18°C–22°C. Therefore, shading facilities should be set up in summer breeding ponds to avoid direct sunlight. During the whole aquaculture process, except for the conversion of the feed, due to changes in nutrition, the aphids did not adapt well to a significant decrease in growth rate, and all other stages grew normally. After 6 months of feeding, the average body weight was 0.507 kg, and the average daily weight gain was 2.8 g.
4 Disease Prevention Although A. sibiricus has a strong ability to resist diseases, it must prevent the occurrence of fulminant diseases before the body weight is 0.150kg, and especially pay attention to hemorrhagic disease caused by Aeromonas. The disease is extremely contagious, with rapid onset and high mortality. Therefore, we must pay attention to prevention work, every 5 to 10 days with chlorine dioxide, furazolidone and other drugs for disinfection, and regularly add antibiotics in the feed, and some can increase the resistance of the additives, such as Vc, Ve and so on. The disease will gradually decrease when juveniles reach 0.15kg.
1. Breeding conditions The aquaculture pond is a cement pool rebuilt on the basis of the original European oak breeding facilities, with an area of ​​15m15m and a depth of 1m. Each pool has a waterwheel type aerator. The water source is the next surface sand filtration water, fresh water, no pollution.
2. Thoroughly clear the ponds after stocking and stocking, disinfect with potassium permanganate solution of 300.000001, and put 3400 tails of Amur sturgeon in a total of two ponds, with a stocking density of about 9 tails per square meter. On the day of stocking, fish and water bodies should be disinfected.
3. Technical measures 1 Feeding and feeding Individuals should be fed silkworms before they grow to 10-12cm, and then use feeding baits to transform their feeding habits until they can consume food. Feeding adopts the principles of qualitative, quantitative, and timing. Qualitative: Silkworms are sterilized with salt and antibacterial drugs after rinsing to prevent the disease from entering the mouth; the size of the formulated baits should be palatable, the nutrition should be comprehensive, the rational ratio should be emphasized, and some can be added to promote growth and improve disease resistance. Nutritional agents. Quantitative: According to the body weight according to a certain feeding rate, the fish body weight 5-200g, the bait rate is 10%-4% (with bait); the fish body weight 200g-1000g, the bait rate is 4%-2.5%, with It is advisable to eat within 15 minutes. Timing: Live baits should be fed 6-8 times a day. The bait should be fed 3 to 4 times a day. To be regular, do not change the feeding time.
2 Water quality management changes the water once a day, changing the amount of water according to individual size and seasonal changes, usually 50% -100%. Keep the water fresh and keep the dissolved oxygen in the water above 5mg/L. Wash the pond once every other day, measure the water temperature every day, measure the physical and chemical factors of water regularly, and make records. In the meantime, it is necessary to take a serious look at the pool, and if any abnormalities are found, it is necessary to analyze the causes in time and take effective measures.
3 Water temperature management Water temperature is the key to the growth rate of Amur sturgeon. According to observation of aquaculture practices, the suitable water temperature for Amur sturgeon is 18°C–22°C. Therefore, shading facilities should be set up in summer breeding ponds to avoid direct sunlight. During the whole aquaculture process, except for the conversion of the feed, due to changes in nutrition, the aphids did not adapt well to a significant decrease in growth rate, and all other stages grew normally. After 6 months of feeding, the average body weight was 0.507 kg, and the average daily weight gain was 2.8 g.
4 Disease Prevention Although A. sibiricus has a strong ability to resist diseases, it must prevent the occurrence of fulminant diseases before the body weight is 0.150kg, and especially pay attention to hemorrhagic disease caused by Aeromonas. The disease is extremely contagious, with rapid onset and high mortality. Therefore, we must pay attention to prevention work, every 5 to 10 days with chlorine dioxide, furazolidone and other drugs for disinfection, and regularly add antibiotics in the feed, and some can increase the resistance of the additives, such as Vc, Ve and so on. The disease will gradually decrease when juveniles reach 0.15kg.
We Hebei Tomato Industry Co., Ltd are specializing in processing Tomato Paste and ketchup for many years. There are 9 production lines and our annual production is 65,000 tons. We can supply you 70g to 4.5kg Canned Tomato Paste. 50g, 56g, 70g flat and standing Sachet Tomato Paste. Drum Tomato Paste is available. Tomato Ketchup in plastic bottle is our new products. They are very popular in the world market. We get SGS, BV, FDA, ISO certificates. Welcome you to visit us!
*Related Products:concentrated tomato,tomato ketchup Tomato Sauce .
Tomato Paste
Tomato Sauce,Fresh Tomato Paste,Canned Tomato Puree,Sachet Tomato Paste,3kg Tomato Paste,3.15kg Tomato Paste,70g Tomato Paste,Tomato Paste 70g-4500g
Hebei Tomato Industry Co., Ltd. , https://www.hebeitomato.com