Artificial breeding method of Barbatula nuda
A technology for artificial reproduction and fish breeding, which is applied in the field of fish farming, and can solve problems such as uneven specifications, small number of fry, and inability to breed large-scale fish, so as to achieve convenient and reliable operation, increase the rate of induced spawning and fertilization, and solve the problem of large-scale fry The effect of production difficulties
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Embodiment 1
[0019] A kind of artificial reproduction method of northern eel loach, comprises the following steps:
[0020] 1. Collect species of fish: select healthy wild fish from natural waters, and collect mahi mahi broodstock from the north in early March: female fish body length 9-11cm, weight 8-50g, 3 years old, full and transparent abdomen, can be seen clearly Eggs in the mature ovary; the body length of the male fish is more than 8-11cm, the weight is 5-30g, 2 years old, and the hand feels rough. After collection, soak in 30g / L salt water for 5 minutes, and the ratio of male to female fish is 2:1.
[0021] 2. Stocking and cultivating seedling fish: Put the selected seedling fish into a temporary cement pond with a density of 100 fish / ㎡, a water depth of 40cm, and a water temperature of 10°C. After the breeding fish enter the pond, after 1 day of slowing down, the bait is fed. The bait is a combination of pellet feed and water silk worms. The feeding amount accounts for about 3% o...
Embodiment 2
[0028] A kind of artificial reproduction method of northern eel loach, comprises the following steps:
[0029] 1. Collect species of fish: collect and select healthy wild fish from natural waters, and collect mahi broodstock from the north in early March: female fish body length 10-15cm, weight 30-75g, 3 years old, full and transparent abdomen, can be seen clearly The eggs mature in the ovary; the male fish is 10-13cm in length, 20-50g in weight, 2 years old, rough to the touch. After collection, soak in 35g / L salt water for 7 minutes, and the ratio of male to female fish is 2.5:1.
[0030] 2. Stocking and cultivating seedling fish: Put the selected seedling fish into the temporary cement pond with a density of 125 fish / ㎡, a water depth of 50cm, and a water temperature of 15°C. After the breeding fish enter the pond, after 1 day of slowing down, the bait is fed. The bait is a combination of pellet feed and water silk worms. The feeding amount accounts for about 4% of the bree...
Embodiment 3
[0037] A kind of artificial reproduction method of northern eel loach, comprises the following steps:
[0038] 1. Collection of species: select healthy wild fish from natural waters, and collect broodstock of northern mahi mahi in early March: the female fish is 12-16cm in length, 75-100g in weight, 3 years old, with a full and transparent abdomen, which can be clearly seen Mature eggs in the ovary; the male fish is 10-15cm in length, 50-75g in weight, 2 years old, rough to the touch. After collection, soak in 40g / L salt water for 10 minutes, and the ratio of male to female fish is 3:1.
[0039] 2. Stocking and cultivating seedling fish: put the selected seedling fish into temporary cement ponds with a density of 150 fish / ㎡, a water depth of 60cm, and a water temperature of 17°C. After the breeding fish enter the pond, after 2 days of slowing down, the bait is fed. The bait is a combination of pellet feed and water silk worm. The feeding amount accounts for about 5% of the br...
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