Breeding method of released fry of schizothorax waltoni Regan

A breeding method and technology of Schizothorax, which is applied in the field of Lhasa Schizothorax seedling breeding, can solve the problems of slow growth of fry, scattered fry, low survival rate of fry, etc., achieve disinfection and cleanliness, high fry survival rate, fast growth effect

Active Publication Date: 2019-12-06
西藏自治区农牧科学院水产科学研究所
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Problems solved by technology

Therefore, it is imminent to study and protect Lhasa Schizothorax resources, and the proliferation and release of Lhasa Schizothorax is an effective channel to restore resources. During the breeding process of Tibet Lhasa Schizothorax seedlings, there are low breeding efficiency, low seedling survival rate and cultivation technology. It is tedious and difficult, and there is no report on the breeding method of Lhasa Schizothorax fry
[0003] At present, the most used seed cultivation technology is pond fertilization and water culture. Af

Method used

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  • Breeding method of released fry of schizothorax waltoni Regan

Examples

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Effect test

Embodiment 1

[0045] A kind of Lhasa Schizothorax release fry seed cultivation method, comprises the following steps:

[0046] A. Fry opening

[0047] Cultivate in parallel tanks, open the mouth to feed on the 18th day after the membranes emerge, and directly feed the microparticle compound feed, once a day, the daily feeding amount is 10% of the fish's body weight, and feed Artemia once every 3 days Or minced red nematodes.

[0048] B. Fry after 2 months old

[0049] Transfer the fish fry that have been cultivated in parallel tanks for two months from the parallel tanks to the greenhouse cement pool, disinfect the breeding greenhouse cement pool 15 days before seedlings, store water, and sprinkle fermented chicken manure at a dosage of 200 kg per mu to promote Rotifers, Cladocera, copepods and other zooplankton grow; the breeding density is 100 fish / cubic meter of water body, feeding microparticle feed, the daily feeding amount is 5% of the fish body weight, and feeding once a day;

[0...

Embodiment 2

[0053] This embodiment is on the basis of embodiment 1:

[0054] A kind of Lhasa Schizothorax release fry seed cultivation method, comprises the following steps:

[0055] A. Fry opening

[0056] Cultivate in parallel tanks, open the mouth and feed on the 18th day after the membranes emerge, directly feed the microparticle compound feed, feed twice a day, the daily feeding amount is 10% of the fish body weight, and feed Artemia once every 5 days Or minced red nematodes.

[0057] B. Fry after 2 months old

[0058] Transfer the fish fry that have been cultivated in parallel tanks for two months from the parallel tanks to the cages in the earthen ponds, disinfect the cages in the earthen ponds 15 days before releasing the seedlings, store water, and sprinkle the fermented chicken manure at a dosage of 200 kg per mu to promote rotation Insects, Cladocera, copepods and other zooplankton grow; the breeding density is 300 fish per cubic meter of water, and the microparticle feed is...

Embodiment 3

[0062] A kind of Lhasa Schizothorax release fry seed cultivation method, comprises the following steps:

[0063] A. Fry opening

[0064] Cultivate in parallel tanks, open the mouth and feed on the 18th day after the membranes emerge, directly feed the microparticle compound feed, feed twice a day, the daily feeding amount is 10% of the fish body weight, and feed Artemia once every 4 days Or minced red nematodes.

[0065] B. Fry after 2 months old

[0066] Transfer the fish fry that have been cultivated in parallel tanks for two months from the parallel tanks to the greenhouse cement pool, disinfect the breeding greenhouse cement pool 15 days before seedlings, store water, and sprinkle fermented chicken manure at a dosage of 200 kg per mu to promote Rotifers, Cladocera, copepods and other zooplankton grow; the breeding density is 200 fish / cubic meter of water body, and the microparticle feed is fed. The daily feeding amount is 5% of the fish body weight, and the feeding is on...

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Abstract

The invention provides a breeding method of released fry of schizothorax waltoni Regan. The method comprises the following steps of breeding of the fry in the mouth opening period, wherein the fry arebred in parallel grooves, open mouths on the 18 day after hatching and are fed with microparticle compound feed 1-2 times every day with the daily feeding amount being 10% of the weight of the fishes and fed with fairy shrimps or chopped limnodrilus hoffmeisteri once every 4-6 days; breeding of the fry at the month age of 2 or older, wherein the fry at the month age of 2 which are bred in theparallel grooves are transferred into a greenhouse cement pond or an earthen pond cage, according to the breeding density, 100-300 fishes are put in per cubic meter of water, and the fry are fed withmicroparticle compound feed 1-2 times every day with the daily feeding amount being 5% of the weight of the fishes; breeding of the fry at the month age of 5-12 after hatching, wherein according to the breeding density, 20-50 fishes are put in per cubic meter of water, and the fry are fed with carp or pelteobagrus fulvidraco feed 1-2 times every day with the daily feeding amount being 3-5% of theweight of the fishes. The breeding method is easy to operate, meets the growth needs of schizothorax waltoni Regan, and can be used for large-scale production of the released fry of schizothorax waltoni Regan in Tibet.

Description

technical field [0001] The invention belongs to the technical field of fish cultivation, and in particular relates to a method for cultivating Lhasa Schizothorax release seedlings. Background technique [0002] Lhasa Schizothorax, commonly known as the sharp mouth fish, is only distributed in the upper and middle reaches of the Yarlung Zangbo River and its affiliated water bodies. It has few resources, slow growth, and late sexual maturity. It is an endemic species in my country and is also the main economic fish in Tibet. one of the classes. In recent years, fishing intensity has increased, outpacing growth. In addition, many invasive fish have formed natural populations in the waters of the Brahmaputra River, and there is a competitive relationship with indigenous fish, resulting in a sharp decline in the population of Lhasa Schizothorax. Therefore, it is imminent to study and protect Lhasa Schizothorax resources, and the proliferation and release of Lhasa Schizothorax is...

Claims

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Application Information

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IPC IPC(8): A01K61/10
CPCA01K61/10Y02A40/81
Inventor 曾本和王金林刘海平王万良林少卿潘瑛子周建设
Owner 西藏自治区农牧科学院水产科学研究所
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