Ribogospod. nauka Ukr., 2014; 1(27): 16-24
DOI: https://doi.org/10.15407/fsu2014.01.016
УДК [639.371.52: 631.8]

GROWING OF YOUNG-OF-THE-YEAR CARP (CYPRINUS CARPIO) IN PONDS OF IRKLIIV HERBIVOROUS FISHES HATCHERY USING TRADITIONAL ORGANIC FERTILIZERS

S. Krazhan, This email address is being protected from spambots. You need JavaScript enabled to view it. , Institute of Fisheries NAAS, Kуiv
S. Koba, This email address is being protected from spambots. You need JavaScript enabled to view it. , Institute of Fisheries NAAS, Kуiv
I. Rybak, This email address is being protected from spambots. You need JavaScript enabled to view it. , Irkliiv herbivorous fish hatchery, Irkliiv

Purpose. Growing of young-of-the-year Nivka scaled carp in polyculture with herbivorous fishes with a study of feeding, growth of young-of-the-year carp, fish productivity of nursery ponds when using traditional organic fertilizers poultry droppings, cattle compost.

Methodology. Generally accepted hydrochemical, hydrobiological, and fisheries methods have been used in the study.

Findings. Growing of young-of-the-year carp was accompanied by studies of parameters of development of natural food bae (bacterio-, phyto-, zooplnakton, zoobenthos), feeding of young-of-the-year carp and fish productivity of nursery ponds when using traditional organic fertilizers such as poultry droppings at a concentration of 0.12 tons/ha and cattle compost at a concentration of 3.0 tons/ha. It was found that application of these fertilizers resulted in similar qualitative and quantitative development of hydrobionts in both ponds, natural food in the gut content of young-of-the-year carp reached 40%, total fish productivity was 1500-1612 kg/ha, mean weight of young-of-the-year was 51.0 ± 4.39 g and 47.0 ± 4.1 g. Consumption of poultry droppings is 25 times lower than that of cattle compost.

Originality. Parameters of the growth of bacterio-, phyto-, zooplankton, zoobenthos and growth of carp in polyculture with the use of traditional organic fertilizers in controlled conditions of modern fisheries management with water supply from the Kremenchug reservoir have been determined.

Practical value. Application of poultry droppings (from 0,12 t/ha) and cattle compost (3,0 tons/ha) in nursery ponds with water supply from the Kremenchug reservoir in Irkliiv herbivorous fishes hatchery resulted in similar quantitative indexes of development of natural food base and fish productivity. In order to save and receive fish production at a level of 1.62 tons/ha, it is recommended to apply poultry droppings at indicated amounts.

Key words: organic fertilizers, natural food supply, feeding, young-of-the-year carp, fish productivity.

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