Percocypris scaled artificial propagation method

Abstract

The invention discloses a percocypris scaled artificial propagation method. The percocypris scaled artificial propagation method comprises the following steps of (1) culturing of parent fishes: using a flowing water pond as a parent fish culturing pond to culture; (2) distinguishing of male and female parent fishes: utilizing a B-ultrasonic scanner to check the abdomens of the parent fishes to distinguish the male and female parent fishes; (3) artificial maturation induction: injecting luteotropin into the distinguished female fishes to release hormone A2 to accelerate induction; (4) artificial spawning induction: performing artificial spawning induction on the selected male and female parent fishes; (5) artificial inseminating; (6) hatching: performing the flowing water and light shielding hatching on the fish spawns after artificial inseminating in a yarn silk hatching framework; (7) culturing of fish fries: when the hatching fish fries start to flatly swim, using the fairy shrimps or crushed water earthworms as an opening bait; after the fish fries are completely domesticated to eat an artificial matching feed, moving the fish fries to a fish fry culturing pond to culture. The method has the advantages that the implementation is easy, the operation is simple and convenient, and the distinguishing rate of the male and female parent fishes can reach more than 90%; the spawning induction rate of the matured parent fishes which are artificially cultured reaches 75%.

Description

technical field [0001] The invention belongs to the technical field of aquaculture, and more specifically relates to a large-scale artificial propagation method for perch, which is suitable for artificial propagation of perch. Background technique [0002] Perch ( Percocypris pingi pingi ) belongs to Cyprinidae, Cyprinidae, Cyprinidae (Cyprinidae) Percocy pris chu), mainly distributed in the main and tributary water systems of the upper reaches of the Yangtze River, and is a unique fish in the upper reaches of the Yangtze River. In recent years, due to changes in the ecological environment of the perch habitat, the amount of resources has shown a downward trend. In order to protect fish resources, it is urgent to carry out artificial breeding and release for resource recovery. The realization of large-scale artificial breeding of perch is a prerequisite for carrying out multiplication and release. [0003] At present, the artificial reproduction technology of perch car...

AI Technical Summary

Problems solved by technology

[0004] (1) The male and female broodstock of perch have no obvious secondary sexual characteristics in the breeding season, and it is difficult to distinguish them from the appearance. It is easy to confuse the male and female broodstock during the induction process, which affects the induction rate

[0005] (2) Due to the poor gonad maturity of the artificially bred broodstock, the conventional method of oxytocin is directly used, and the oxytocin rate is lower than 30%.