Growth of rainbow trout (oncorhynchus mykiss) in the conditions of Tashkent province, Uzbekistan

Sh Sulaymonov,G Abdullaev,S Saidumarov,V Kankhva

doi:10.1051/e3sconf/202125804040

Sh Sulaymonov, G Abdullaev + Show 2 more

Open Access

https://doi.org/10.1051/e3sconf/202125804040

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Abstract

Rainbow trout is a new fish farming object for Uzbekistan, the adaptability of which (first of all, growth) to local conditions should be carefully studied. We analyzed the growth of rainbow trout in the conditions of flowing pools and cages in the foothill zone of Tashkent province of Uzbekistan. From March to October, the water temperature in the Khojikent reservoir varied from 4.9 to 13.1 °C, the amount of dissolved oxygen was 8.4 to 11.5 mg/l, and the pH was 7.40 to 7.67. In the flowing basin, the temperature was 15-18 °C, pH 7.2-7.5, the amount of dissolved oxygen 6.1-11.2 mg/l. The conditions of the foothill zones of Uzbekistan in terms of water quality are favorable for the development of trout breeding. During the season, fish in cages increased from 250 g to 623 g, in pools from 25 g to 390 g on average. The waste was 1.7%. The actual fish productivity of the basin is 39 kg/m3, the cage is 30 kg/m3 and the feed coefficient in the basin is 1.2, in the cages - 1.09.

Highlights

For the development of integrated water use and rational use of water resources, technologies are needed in which aquaculture will be an additional function in the reservoir, and the list of cultivated objects will consist of warm-water fish [1,2,3,4, 7,8,9,10]
These requirements are met by new approaches for the republic of intensive cultivation of rainbow trout (Oncorhynchus mykiss) in floating fish cages and flowing pools [5, 6], which are currently being developed commercially only in “Golden Fish Group” LLC in Tashkent province
Within the framework of the local research project КH-А-КH-2018-196 "Technology of growing marketable trout in flowing basins in the conditions of Tashkent province", this work was carried out in order to characterize the growth of rainbow trout in different types of conditions in the foothill zone of Tashkent province

Summary

Introduction

For the development of integrated water use and rational use of water resources, technologies are needed in which aquaculture will be an additional function in the reservoir, and the list of cultivated objects will consist of warm-water fish [1,2,3,4, 7,8,9,10] These requirements are met by new approaches for the republic of intensive cultivation of rainbow trout (Oncorhynchus mykiss) in floating fish cages and flowing pools [5, 6], which are currently being developed commercially only in “Golden Fish Group” LLC in Tashkent province. Within the framework of the local research project КH-А-КH-2018-196 "Technology of growing marketable trout in flowing basins in the conditions of Tashkent province", this work was carried out in order to characterize the growth of rainbow trout in different types of conditions in the foothill zone of Tashkent province.

Methods

Results

Conclusion