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1 pond conditions: a pond area of ​​6 acres, sunny, pool depth of 1.6 to 2.2 meters, the bottom of the silt is about 30 cm thick, the water source is ditch water, good water quality, convenient injection and drainage, with a 1.5-kilowatt impeller type Aerator. Another 600 pooled white ducks were reared in a fenced enclosure. The fish ponds were exposed for 5 days before release of water and 7 days before stocking, clear ponds and lower fertilizers were used, and 100 kg of quicklime and 200 kg of chicken droppings (or duck droppings) were used per acre.
2 fry stocking: the water temperature is stable above 18 °C, before stocking seedlings by 10 ~ 20 g / m 3 potassium permanganate solution soak for 20 minutes. The first time of restocking is April 10th. There are 1050 oysters per acre stocking size: 1050 oysters, 300 gram of grass carp, 50 grams of white squid, 52 squid, 150 squid, 210 squid, 250 squid, 40 squid, 150 Cod 70 tails, 25 g stings 30 tails. The second time of restocking was August 14th. There were 1100 oysters of 30 grams of Oani fish stocked per acre. There were a total of 531 fishes of grass carp, cockroach, cockroach, cockroach, and catfish that had the same or similar specifications as the first cockroach.
3. Feeding and management: In the first 5 days after stocking, fish eat less, and the principle of feeding more and more, less to eat and less to vote. Normal feeding after 5 days, bait feed mainly with compound, protein content of about 35%, for the full price of granular feed. Feed 2 times a day, once in the afternoon and 1 in the afternoon, and insist on timing, positioning, and quantitative feeding. The daily feeding amount is about 2% to 5% of the fish's body weight. Usually add some grass, leaves and other grass fed fish.
4 water quality management: hot weather, alternating cold and warm, low pressure caused by low dissolved oxygen, the fish has a slight floating head when the aerator is opened, until the fish sinks or the sun one hour later; weekly injection of water, plus The high pond water level is 10cm; use 1-5kg of quicklime to sterilize the pond water every half a month; open the high temperature season at noon for 1 to 2 hours. Each morning and evening will be followed by a patrol pond. Observe the fish and inquire about problems in time. During the whole breeding period, the pool water is in the state of “fat, live, tender and coolâ€.
5. Production and Benefits: The first batch of catches began in mid-June, and began to catch white pelicans, grass carp and some pupa and pupa to control the density. In mid-July, they caught oystercatchers, cockroaches and some octopus fish until 8 On the 1st of the month, all the catching operations were completed. The production of Oani 418 kg per mu was 460 g/tail. The second catch began from mid-October and was arrested on November 25th. It produced 408 kilograms of Omani fish and 400 g/tail.
A total of 41,886 yuan was invested in this project, including 3,600 yuan for pond rent, 12,970 yuan for seedlings, 18,616 yuan for feed, 3,500 yuan for labor, 1,000 yuan for equipment depreciation, and 2,300 yuan for other expenses. The total production of fish is 8118 kg, with an output value of 61,680 yuan and a profit of 19,800 yuan. The input-output ratio is 1:1.47. Net production per acre 1098 kg, profit 3299 yuan.
The adoption of a two-year-old breeding method has the advantages of faster turnover, higher production value, provision of morning market, and full use of water bodies and floating living resources compared to the one-year breeding method, but it has a greater investment compared to one-cultivation farming. Problem, and this problem can be alleviated by the following two factors:
(1) The turnover is fast, and the second investment in aquaculture can be obtained in the first crop;
(2) The free time of the second fish pond after fish farming can be used to mark rough fry and fingerlings. Where there is warm water, Oini fry can be overwintered on their own, which will greatly reduce the cost. Therefore, the two-day breeding method of Onyx can provide a way for the breeding of Onyx fish in the region or similar natural conditions (especially weather conditions). In recent years, a Rapid development, only Shaoguan City in the year of production reached 6,343 tons in 2000, ranked after the grass, cockroaches, cockroaches became the fourth main fish, accounting for 8.8% of total fish production. However, due to the continuous decline in fish prices in recent years, low breeding efficiency has become a common problem among fishermen. We adopt a two-year breeding method and achieved better aquaculture efficiency. The introduction is as follows:
1 pond conditions: a pond area of ​​6 acres, sunny, pool depth of 1.6 to 2.2 meters, the bottom of the silt is about 30 cm thick, the water source is ditch water, good water quality, convenient injection and drainage, with a 1.5-kilowatt impeller type Aerator. Another 600 pooled white ducks were reared in a fenced enclosure. The fish ponds were exposed for 5 days before release of water and 7 days before stocking, clear ponds and lower fertilizers were used, and 100 kg of quicklime and 200 kg of chicken droppings (or duck droppings) were used per acre.
2 fry stocking: the water temperature is stable above 18 °C, before stocking seedlings by 10 ~ 20 g / m 3 potassium permanganate solution soak for 20 minutes. The first time of restocking is April 10th. There are 1050 oysters per acre stocking size: 1050 oysters, 300 gram of grass carp, 50 grams of white squid, 52 squid, 150 squid, 210 squid, 250 squid, 40 squid, 150 Cod 70 tails, 25 g stings 30 tails. The second time of restocking was August 14th. There were 1100 oysters of 30 grams of Oani fish stocked per acre. There were a total of 531 fishes of grass carp, cockroach, cockroach, cockroach, and catfish that had the same or similar specifications as the first cockroach.
3. Feeding and management: In the first 5 days after stocking, fish eat less, and the principle of feeding more and more, less to eat and less to vote. Normal feeding after 5 days, bait feed mainly with compound, protein content of about 35%, for the full price of granular feed. Feed 2 times a day, once in the afternoon and 1 in the afternoon, and insist on timing, positioning, and quantitative feeding. The daily feeding amount is about 2% to 5% of the fish's body weight. Usually add some grass, leaves and other grass fed fish.
4 water quality management: hot weather, alternating cold and warm, low pressure caused by low dissolved oxygen, the fish has a slight floating head when the aerator is opened, until the fish sinks or the sun one hour later; weekly injection of water, plus The high pond water level is 10cm; use 1-5kg of quicklime to sterilize the pond water every half a month; open the high temperature season at noon for 1 to 2 hours. Each morning and evening will be followed by a patrol pond. Observe the fish and inquire about problems in time. During the whole breeding period, the pool water is in the state of “fat, live, tender and coolâ€.
5. Production and Benefits: The first batch of catches began in mid-June, and began to catch white pelicans, grass carp and some pupa and pupa to control the density. In mid-July, they caught oystercatchers, cockroaches and some octopus fish until 8 On the 1st of the month, all the catching operations were completed. The production of Oani 418 kg per mu was 460 g/tail. The second catch began from mid-October and was arrested on November 25th. It produced 408 kilograms of Omani fish and 400 g/tail.
A total of 41,886 yuan was invested in this project, including 3,600 yuan for pond rent, 12,970 yuan for seedlings, 18,616 yuan for feed, 3,500 yuan for labor, 1,000 yuan for equipment depreciation, and 2,300 yuan for other expenses. The total production of fish is 8118 kg, with an output value of 61,680 yuan and a profit of 19,800 yuan. The input-output ratio is 1:1.47. Net production per acre 1098 kg, profit 3299 yuan.
The adoption of a two-year-old breeding method has the advantages of faster turnover, higher production value, provision of morning market, and full use of water bodies and floating living resources compared to the one-year breeding method, but it has a greater investment compared to one-cultivation farming. Problem, and this problem can be alleviated by the following two factors:
(1) The turnover is fast, and the second investment in aquaculture can be obtained in the first crop;
(2) The free time of the second fish pond after fish farming can be used to mark rough fry and fingerlings. Where there is warm water, Oini fry can be overwintered on their own, which will greatly reduce the cost. Therefore, the two-year-old breeding method of Onyx can provide a way for Onyx aquaculture in the region or similar natural conditions (especially weather conditions).
Two-year-old breeding method
In recent years, the cultivation of tilapia fish such as Onyx has developed rapidly in the north of Guangdong. Only Shaoguan City produced 6,343 tons in 2000. It ranked fourth as the main fish after grass, cockroach and clams, accounting for the total fish production. 8.8%. However, due to the continuous decline in fish prices in recent years, low breeding efficiency has become a common problem among fishermen. We adopt a two-year breeding method and achieved better aquaculture efficiency. The introduction is as follows: