Application of carp pituitary and Nerestin in artificial reproduction of species of the family Cyprinidae

Berdibek Abilov1,2, Lyudmila Nikolova3, Kuanish Isbekov2, Gulzhan Kulmanova1
1 Kazakh National Agrarian University, Almaty, Kazakhstan
2 Scientific and Production Center of Fisheries LLC, Almaty, Kazakhstan
3 Agricultural University, Department of Animal Science, 4000 Plovdiv, Bulgaria

Abstract

Abilov B., L. Nikolova, K. Isbekov & G. Kulmanova (2022). Application of carp pituitary and Nerestin in artificial reproduction of species of the family Cyprinidae. Bulg. J. Agric. Sci., 28 (Supplement 1), 129–138

Some reproductive characteristics after application of carp pituitary and Nerestin in artificial reproduction of common carp, grass carp and silver carp from local populations in Kazakhstan were studied. Application of Nerestin-6 showed relatively low efficacy in all the studied fish species. Fecundity and egg hatchability of common carp, grass carp and silver carp were 73.2% and 32.5%; 72.5% and 43.2%; 75.3% and 41.2%, respectively. Nerestin-1B proved to be the most efficient in herbivorous fish. When used in grass carp and silver carp, egg fecundity and the percentage of hatched prelarvae was 92.5% and 53.0%; 88% and 50.2%, respectively. In common carp, the best results were obtained after the application of pituitary extract. Fecundity and hatchability of the eggs reached 92.5% and 54.5%, respectively.

Keywords: carp, grass carp, silver carp, artificial propagation, fecundity, egg fertility, prelarvae
Abbreviations: Cc – Common carp; Gc – Grass carp; Sc – Silver carp; BW – Body weight; L – Total length; SL – Standard length, Hl – Head length; H – Maximum body height; O – Maximum body girth; B – Maximum body width; CF – Fulton’s coefficient ((BW/SL3)*100); HBI – Нigh-backed index (l/H); IBB – Broad-backed index ((B/SL)*100); IH – Hardness index (O/SL) × 100; AF – Absolute fecundity, eggs; RFg – Relative fecundity, eggs/g BW; RFcm – Relative fecundity, eggs/L сm; EFR – Egg fertility rates, %; HP – Hatchеd prelarvae, %.

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