NUTRITIONAL VALUE OF TWOYEARLING CARP OF DIFFERENT CROSS-BREEDS

One of the important fields of carp breeding work is improvement of the commercial traits of created carp breeds or cross-breed commercial crosses. The main indicator determining the value of commercial fish is edible carcass yield depending on the interior (relative weight of carcass edible parts) and the exterior (high spin, ratios of head and body girth, type of scale) indices. The paper presents the results of researches on interior indicators (body parts ratio) of twoyearlings of two-breed crosses obtained from crossing of adapted fourth generation imported breeds grown in Belarus with carp lines of Belarusian selection. The edible part of carcass size varied from 60.7 % (three prim x fresinet) to 66.7% (GermançLahvinsk scaly), averaging 64.0 % in the two-breed crosses studied. Compared with the average population yield of carcass in twobreed crosses, statistically significant advantages were determined in combinations of crossing with German carp. In this regard, quite high indicators were also observed in combinations with the Yugoslav carp, where it was used as the maternal component of crosses, and in combinations obtained from crossing the Mirror Isobelin carp with a Butterfly breed. Based on comprehensive assessment of interior indicators, a number of crosses have been determined with increased nutritional value of carcasses, among which the maximum nutritional value was shown by the cross Germançthree prim. The obtained data are of practical importance for creation of industrial hybrids with attractive commercial traits.

1. Tarazevich E. V., Skurat E. K., Grebneva E. I., Papkiauri A. A., Us A. P. Peculiarities of carp breeding on fish farms of the Republic of Belarus. Voprosy rybnogo khozyaistva Belarusi: sbornik trudov [Belarus Fish Industry Problems: a collection of papers]. Minsk, 1994, iss. 12, pp. 23-27 (in Russian).

2. Tarazevich E. V., Prokhorchik G. A., Kniga M. V., Us A. P., Dudarenko L. S., Semenov A. P., Sazanov V. B., Vashkevich L. M. To the procedure of separate fishes groups piscicultural value definition by ranking method. Voprosy rybnogo khozyaistva Belarusi: sbornik nauchnykh trudov [Belarus Fish Industry Problems: a collection of scientific papers]. Minsk, 2005, iss. 21, pp. 45-55 (in Russian).

3. Sevasteev S. V. Obtaining large two year-old carps in the first fish zone. Rybovodstvo i rybnoe khozyaistvo = Fish and Fisheries, 2015, no. 4, pp. 39-41 (in Russian).

4. Shumak V. V. The bases of carp growth model. Rybnoe khozyaistvo = Fisheries, 2016, no. 3, pp. 80-84 (in Russian).

5. Tarazevich E. V., Prokhorchik G. A., Kniga M. V., Dudarenko L. S., Us A. P., Chimbur I. V., Sazanov V. B., Trubach I. A., Vashkevich L. M. Evaluation of heterotic effect in two-year-olds of three-way crosses. Voprosy rybnogo khozyaistva Belarusi: sbornik nauchnykh trudov [Belarus Fish Industry Problems: a collection of scientific papers]. Minsk, 2003, iss. 19, pp. 97-102 (in Russian).

6. Artamonova T. I. Quantitative characteristics of muscles and some morphological structures of the body of two-yearold carp in conditions of high-intensive technology of raising. Sbornik nauchnykh trudov Vserossiiskogo nauchno-issledovatel’skogo instituta presnovodnogo rybnogo khozyaistva [Collection of scientific works of the All-Russian Scientific Research Institute of Freshwater Fisheries]. Moscow, 2000, iss. 75, pp. 125-131 (in Russian).

7. Artamonova T. I., Panov V. E., Esavkin V. E. Some peculiarities of the formation of morphological structures of the body of two-year-old carp in connection with growth. Sbornik nauchnykh trudov Vserossiiskogo nauchno-issledovatel’skogo instituta presnovodnogo rybnogo khozyaistva [Collection of scientific works of the All-Russian Scientific Research Institute of Freshwater Fisheries]. Moscow, 1999, iss. 74, pp. 169-176 (in Russian).

8. Bagrov A. M., Bobrova Yu. P., Katasonov V. Ya., Ilyasov Yu. I., Demkina N. V. Fish breeding and biological features of Parsky breed carp. Doklady Rossiiskoi akademii sel’skokhozyaistvennykh nauk [Reports of the Russian Academy of Agricultural Sciences], 2001, no. 2, pp. 42-45 (in Russian).

9. Bashunova N. N., Knіga M. V., Ekel’chyk R. Z., Chymbur І. V. Possibilities of carp hybrids rearing in Belarus. Vestsi Akademii agrarnykh navuk Belarusi [Proceedings of the Academy of Agrarian Sciences of Belarus], 1994, no. 2, pp. 93-96 (in Belarussian).

10. Tarazevich E. V., Kniga M. V., Vashkevich L. M., Tentevitskaya L. S., Semenov A. P., Sazanov V. B., Us V. V., Shumak V. V. Peculiarities of nutritional value of different crosses with tremliansky carp. Rybovodstvo i rybnoe khozyaistvo = Fish and Fisheries, 2014, no. 4, pp. 40-45 (in Russian).

11. Khabzhokov A. B., Kazanchev S. Ch., Ismailov A. A. Ecological significance of body girth index in carp breeding. Vestnik Altaiskogo gosudarstvennogo agrarnogo universiteta = Bulletin of Altai State Agricultural University, 2018, no. 2 (160), pp. 124-129 (in Russian).

12. Zakonnova L. Method for the formation of genetically remote carp lines based on local pedigree herds. Presnovodnaya akvakul’tura: sostoyanie, tendentsii i perspektivy razvitiya: sbornik nauchnykh statei [Freshwater aquaculture: state, trends and development prospects: a collection of scientific papers]. Kishinev, 2005, pp. 24-26 (in Russian).

13. Fauconneau B., Bobe J., Pereiza V. External morphology of comon carp at commercial size and its relationship with dressing yield. Journal of Morphology, 1997, vol. 232, no. 3, pp. 253. https://doi.org/10.1002/(SICI)1097- 4687(199706)232:33.0.CO;2-A

14. Leonenko E. P. Morphological characteristics of carp, silver carp and grass carp in Belarus. Abstract of doctoral thesis in biology. Kaliningrad, 1968. 21 p. (in Rissian).

15. Bekh V. V. Yield of edible parts of body of hybrid and purebred carp under farming. Visnik agrarnoi nauki = News of Agrarian Sciences, 1998, no. 1, pp. 72-74 (in Ukrainian).

16. Tomilenko V. G., Grechkovskaya A. I. Nutritional value of crossbred and hybrid carp. Rybnoe khozyaistvo: respublikanskii mezhvedomstvennyi tematicheskii nauchnyi sbornik [Fisheries: the republican interdepartmental thematic scientific collection]. Kiev, 1967, iss. 4, pp. 62-64 (in Russian).

17. Labenets A. V. Commodity quality and nutritive value of hybrid carp. Vestnik Rossiiskoi akademii sel’skokhozyaistvennykh nauk [Bulletin of the Russian Academy of Agricultural Sciences], 2009, no. 2, pp. 82-83 (in Russian).

18. Tarazevich E. V. Selective and genetic bases for creation and use of Belarusian breeds and groups of carp. Minsk, Tonpik Publ., 2009. 223 p. (in Russian).

19. Pravdin I. F. Guidelines on fish study (mainly freshwater). 4nd ed. Moscow, Pishchevaya promyshlennost’ Publ., 1966. 376 p. (in Russian).