- Construction of fish ponds The area of the parent fish pond is 5-10 square meters, with stone embankments, cement bottom, injection and drainage gates, and a water depth of about 1 meter. Spawning and hatching ponds: The area is 3-5 square meters, the dam is made of stone, the inner surface of the embankment is smoothed with cement, the bottom of the pond is cement, and there are injection and drainage gates, and the water depth is about 0.5-1 meter. The spawning pond can also be used as a hatching pond. After the broodstock lay eggs, the broodstock can be caught and hatched in the original pond. Fry rearing pond: The area is 10-20 square meters, the embankment is made of stone, the bottom is mud or cement, the water depth is 1-1.5 meters, and there are injection and drainage gates. The water source is convenient for adjusting the water quality. The adult fish rearing pond: The area is 660-1980 square meters. It can be made of stone embankments or earthen ponds, but it must be watertight. The bottom of the pond is muddy, the water depth is 1-1.6 meters, and there are injection and drainage gates for easy adjustment of water quality. If it is an earthen pond embankment, the width of the upper top dam is 0.8 to 1 meter, and the width of the lower bottom is 1.2 to 1.6 meters. It must be water-retaining and built in a place with convenient water sources. Choose a sunny day with a water temperature above 190C for spawning. When the water temperature is suitable, generally 13 to 14 hours after injection, the male and female broodstock will be seen in the net cage. The "fish nest" is near the estrus chasing and spawning, and the spawning time is about 2 to 3 hours. The eggs are sticky and the eggs are small. The number of eggs laid by a mature 1 gram egg is about 1,000 to 11,000. The next day after spawning, the broodstock will be gently caught and placed in the post-birth broodstock pond for post-birth intensive feeding to restore the physique of the broodstock. The fish eggs continue to hatch in the original spawning box, and the hatched water flowers are still raised in the net cage. When the water temperature is 19-20.50C, the fish eggs can hatch into fry after 75 hours. The yolk sac of the newly hatched water fry will disappear after 3-4 days. The newly hatched water fry have weak swimming ability and can only swim vertically. They can swim horizontally after 1 week, so they still attach to the dark pool wall or pool corner most of the time. On the third day after the fry hatch, they start to eat rotifers and small water fleas. Before feeding the water fleas, they must be sieved out with a 60-mesh nylon sieve to remove large water fleas. The sieved rotifers and fleas are disinfected with 0.1 grams of copper sulfate before feeding, and then sprinkled evenly to feed the water fry. Feed 2-3 times a day, once in the morning, afternoon and evening. Feed 50-100 grams of water fleas for every 10,000 fry, and increase as the fish body grows. After 15-20 days of fry culture, the Qian fry are raised in separate ponds. The large, medium and small fish are selected by fish and put into the pond for single culture or mixed culture with silver carp and sea bream fry. After 15-20 days of cultivation, the fry will be divided into ponds and then enter the fish seed cultivation stage. When dividing the ponds, the water temperature should be less than 2-30C. The water level of the fish seed pond should be gradually deepened with the growth of individual fish, with a range of about 0.4-0.6-1.3 meters. The stocking density of fish is 20-40 per square meter. Live bait is used as the main bait in the early stage (rotifers, water fleas). In the later stage, large water fleas and earthworms can be fed. Feed 3 times a day, once in the morning, afternoon and evening. The feeding amount is 150-500 grams of water fleas for every 10,000 fish fry. As the body length of the fish fry increases to 5-6 cm, earthworms are added once a day, and 0.5-1.5 kg is added for every 10,000 fish fry. When the body length increases to 10 cm, in addition to water fleas, artificial mixed loose baits can be fed successively. The proportion of the mixed bait is: 25% fish meal, 20% corn meal, 20% three flours, 10% wheat bran, 20% bean cake or vegetable cake, and 5% bone meal. In the early stage, the bait is made into granular form for feeding. The feeding method should be regular, fixed, fixed, and fixed. Feed 3 times a day, once in the morning, afternoon, and evening, and the amount of feed accounts for 3% to 5% of the fish body weight. When the fish reaches 12 to 15 cm in length, it will be transferred to the fish pond, rice field, reservoir, etc. to raise commercial fish. Single fish breeding: The fish pond has an area of 0.1 to 0.5 mu, the water level is 0.9 to 1.5 meters, the water source is sufficient, and the fish pond is equipped with a water injection and drainage gate to facilitate the adjustment of water quality. The fish size is 50 to 100 grams per tail, 5 tails per square meter, and the seedlings are released at the end of June and the beginning of July. The proportion of mixed feed is 30% fish meal, 30% three kinds of flour, 10% bran, 20% vegetable cake, and 10% corn flour. Feed 3 times a day, once in the morning, afternoon, and evening. The daily feed amount accounts for 5% of body weight in May and June, 6% of body weight in July and August, and 10% of body weight in September and October. Daily management: Strictly prevent the fish pond from floating and dying due to lack of oxygen. Add new water once every 7 to 10 days. Disinfect the pond with quicklime before the fish enter the pond; soak the fish in the pond with medicine when entering the pond. After the fish enter the pond, spray the water with 1 gram of bleaching powder per cubic meter of water 3 times a month for sterilization. Feed at a fixed time, quality, quantity, and location. Check the growth and fatness of the fish regularly, and analyze and formulate strengthening measures for the next stage. Mixed culture: In order to make full use of the natural bait in the water, it is best to mix Guizhou fish with silver carp. The mixed culture ratio is 25-30 grams of silver carp per tail, 3 tails per square meter, 30-40 grams of silver carp per tail, 2 tails per square meter, and 50-100 grams of catfish per tail, 5 tails per square meter. The bait formula is 30% fish meal, 30% three kinds of flour, 10% wheat bran, 20% vegetable cake, and 10% corn flour. It is made into granular bait for feeding. Feed 3 times a day, once in the morning, afternoon and evening, and the amount of feed accounts for 5-10% of body weight. By the autumn of the second year, the individual weight of native catfish is 200-400 grams. The daily management is the same as the fish species stage. Add 1% of Yule disinfectant to the granular feed to prevent The Qian fish is a new species. It has the same living habits as catfish. You can refer to the artificial breeding of catfish. I know they feed it with the leftovers from the slaughterhouse. The area of the fish pond for brooding fish is 5 to 10 square meters. The pond embankment is made of stone slabs, the bottom is made of cement, and there are filling and drainage gates. The water depth is about 1 meter. Spawning and hatching pool: The area is 3-5 square meters, the pool dam is made of stone, the inner surface of the pool embankment is smoothed with cement, the pool bottom is cement bottom, with water injection and drainage gates, and the water depth is about 0.5-1 meter. The spawning pool can also be used as a hatching pool. After the broodstock lay eggs, the broodstock can be caught and hatched in the original pool. Fish fry rearing pond: area of 10-20 square meters, the pond embankment is made of stone, the bottom is mud or cement, the water depth is 1-1.5 meters, with water injection and drainage gates, convenient water source for easy adjustment of water quality. Fish rearing pond: area of 660-1980 square meters. Stone embankment or earthen pond can be used, but it must be leak-proof. The bottom of the pond is mud, the water depth is 1-1.6 meters, and injection and drainage gates are set to facilitate water quality adjustment. If it is an earthen pond embankment, the upper top dam is 0.8-1 meters wide and the lower bottom is 1.2-1.6 meters wide. It must retain water and be built in a place with convenient water sources. Choose a sunny day with a water temperature above 190C for aphrodisiac spawning. When the water temperature is suitable, generally 13 to 14 hours after injection, you can see male and female broodstock chasing and spawning near the "fish nest" in the net cage, and the spawning time is about 2 to 3 hours. The eggs are sticky and small, and the number of eggs laid by a mature 1 gram of eggs is about 1,000 to 11,000. The next day after spawning, the broodstock will be gently caught and placed in the pre-sail broodstock pond for post-spawning intensive feeding to restore the physique of the broodstock. The fish eggs continue to hatch in the original spawning box, and the hatched water flowers are still raised in the net cage. When the water temperature is 19-20.50C, the fish eggs can hatch into fry after 75 hours. The yolk sac of the newly hatched water fry will disappear after 3-4 days. The newly hatched water fry have weak swimming ability and can only swim vertically. They can swim horizontally after 1 week, so they still attach to the dark pool wall or pool corner most of the time. The fry will start to eat rotifers and small water fleas on the third day after hatching. Before feeding the water fleas, large water fleas must be screened out with a 60-mesh nylon sieve. The sieved rotifers and fleas should be disinfected with 0.1 grams of copper sulfate before feeding, and then sprinkled evenly to feed the water fry. Feed 2-3 times a day, once in the morning, afternoon and evening. Feed 50-100 grams of water fleas for every 10,000 fry, and increase as the fish grows. After 15 to 20 days of fry cultivation, the Qian seedlings are divided into ponds for breeding. The large, medium and small fish are selected and placed in ponds for breeding alone or mixed with silver carp and sea bream fry. After 15 to 20 days of fry cultivation, the fry are divided into ponds and then transferred to the fingerling breeding stage. The water temperature of the pond should be less than 2 to 30C when the fry are separated. The water level of the fingerling pond should be gradually deepened with the growth of individual fish, and the range is about 0.4 to 0.6 to 1.3 meters. The density of fingerling breeding is 20 to 40 per square meter. Live bait is used as the main bait in the early stage (rotifers and water fleas). In the later stage, large water fleas and water earthworms can be fed. Feed 3 times a day, once in the morning, afternoon and evening. The feeding amount is 150 to 500 grams of water fleas for every 10,000 fry. As the body length of the fry increases to 5 to 6 cm, water earthworms are added once a day, and 0.5 to 1.5 kilograms are fed for every 10,000 fry. When the body length increases to 10 cm, in addition to feeding Daphnia, you can gradually feed artificial mixed loose bait. The proportion of mixed bait is: fish meal accounts for 25%, corn meal accounts for 20%, three flours account for 20%, wheat bran accounts for 10%, bean cake or vegetable cake accounts for 20%, bone meal accounts for 5%. In the early stage, make granular bait for feeding. The feeding method should be regular, fixed, positioned and of fixed quality. Feed three times a day, once in the morning, afternoon and evening, and the amount of feed accounts for 3% to 5% of the fish body weight. When the fish reaches 12 to 15 cm in length, it will be transferred to the fish pond, rice field, reservoir and other places to raise commercial fish. Single fish breeding: The fish pond area is 0.1 to 0.5 mu, the water level is 0.9 to 1.5 meters, the water source is sufficient, and the fish pond is equipped with injection and drainage gates to facilitate the adjustment of water quality. The fish species specification is 50 to 100 grams per tail, 5 tails per square meter, and the seedlings are released at the end of June and the beginning of July. The lead ratio of the mixed bait is 30% of fish meal, 30% of three powders, 10% of bran, 20% of vegetable cakes, and 10% of corn flour. Feed three times a day, once in the morning, afternoon and evening. The daily feed amount accounts for 5% of body weight from May to June, 6% of body weight from July to August, and 10% of body weight from September to October. Daily management: Strictly prevent the fish pond from floating and dying due to lack of oxygen. Add new water once every 7 to 10 days. Disinfect the pond with quicklime before the fish enter the pond; soak the fish in the pond with medicine when entering the pond, and spray the water with 1 gram of bleaching powder per cubic meter of water 3 times a month for sterilization after the fish enter the pond. Feed at regular times, quality, quantity, and fixed points. Check the growth and fatness of the fish regularly, and analyze and formulate strengthening measures for the next stage. Mixed culture: In order to make full use of the natural bait in the water body, it is best to mix Guizhou fish with silver carp. The mixed culture ratio is 25 to 30 grams per silver carp, 3 per square meter, 30 to 40 grams per silver carp, 2 per square meter, and 50 to 100 grams per catfish, 5 per square meter. The bait formula is 30% fish meal, 30% three powders, 10% wheat bran, 20% vegetable cakes, and 10% corn flour. It is made into granular bait for feeding. Feed three times a day, once in the morning, afternoon and evening. The amount of feed is 5-10% of body weight. By the autumn of the second year, the individual weight of the catfish is 200-400 grams. Daily management is the same as the fingerling stage. Add 1% of Yule disinfectant to the granular feed. Can you provide the exact name of the fish? For example, crucian carp, catfish, carp, silver carp, etc. I am not well educated and do not know the common names of different places. |
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