Economic efficiency of forming pike perch broodstocks in fish farms of Kazakhstan
| Autor: | Nina Sergeevna Badryzlova, Saule Zhangirovna Asylbekova, Kuanysh Baibulatovich Isbekov, Saya Kashkinbayevna Koyshibaeva |
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| Rok vydání: | 2020 |
| Předmět: | |
| Zdroj: | Vestnik of Astrakhan State Technical University. Series: Fishing industry. 2020:106-115 |
| ISSN: | 2309-978X 2073-5529 |
| Popis: | The article highlights the problem of the industrial press on the pike perch population in all reservoirs of Kazakhstan and the sharp decline in its population due to increased exports of pike perch to Europe, which led to the need to fill the shortage of fish stock by forming pike perch broodstocks in the fish farms and increasing the importance of aquaculture. There are presented the results of introducing the technology of pike perch broodstocks formation in conditions of the fish farm HalykBalyk, LLP, which is carried out in two ways: by a method of domestication that provides catching pike perches from the natural reservoirs and adopting the spawners to the con-ditions of the fish farm: by obtaining offspring from the wild pike perch producers and growing the seeding material in ponds with subsequent selection for the broodstock. There have been given the calculations and analysis of the economic efficiency of biotechnological techniques for the phased formation of the breeding stock of pikeperch in a fish farm. There are presented the data on the cost of domestication of pike perch producers harvested in the natural pond and transported from the fishing sites to the hatcheries, as well as fish products: fertilized eggs, larvae that switched to mixed feeding, raised juveniles, fingerlings and two-year-olds raised in polyculture with traditional fish species in ponds in order to form a breeding stock of pike perch by the ‘ab ovo’ method. A diagram of the production processes of forming pike perch broodstock is presented. To determine the economic efficiency of growing pike perch yearlings and two-year-olds in the ponds in polyculture with carp and grass carp, the general costing of ponds, specific production costs and data on fish catch in monetary terms are presented. A comparative analysis of the results has been held; the ways to reduce the cost of pike perch production at each stage have been indicated. |
| Databáze: | OpenAIRE |
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