Fishery-exteriors characteristics of the brooders of brown trout, rainbow trout and brook trout
This study aims to determine the reproductive indices of three types of salmon fish: brown trout (Salmo trutta morfa fario Linnaeus (1758), rainbow trout (Oncorhynchus mykiss Walbaum, 1792) and brook trout (Salvelinus fontinalis Mitchill, 1814) in aquaculture. For this purpose, 10 females and 10 males of each species were selected on an analogous basis and the main fishery-exteriors and reproductive characteristics were identified. The researching of relative fertility permit to establish that this indicator in brook trout females was 18.36% higher compared to rainbow trout, however, by 7.5% lower compared to the brown trout. It was found that brook trout eggs had less weight and size in comparison with other studied species. In particular, the weight and diameter of the eggs were 2.89 and 9.7% respectively lower than of rainbow trout, as well as 8.1 and 3.44% respectively lower compared to the brown trout. When studying the quantity of ejaculate, it was found that on average, brook trout males had 16.95% less of ejaculates compared to rainbow trout males, but 79.6% more than of brown trout males. When comparing the main indices of the brooders body of the studied species, it was found that the condition factor of the brook trout and rainbow trout females was quite high at 1.55–1.57, the brown trout one was 1.35, and the profile index respectively was 3.5, 3.52 and 4.0. The males' condition factor of brook trout, rainbow trout and brown trout was respectively 1.64, 1.52 and 1.35. Fishery-exteriors indicators met the requirements of brooders species and age specificity norms of the studied fish species.
Barylo, Yе. (2018). Exterior and weight characteristics of age‐1+ brown trout (Salmo trutta Linnaeus, 1758), rainbow trout (Oncorhynchus mykiss Walbaum, 1792) and brook trout (Salvelinus fontinalis Mitchill, 1814). Fisheries Science of Ukraine, 1(43), 43–53 doi: 10.15407/fsu2018.01.043.
Culadze, V.L. (1990). Basejnovyj metod vyrashhivanija lososevih ryb: na primere raduzhnoj foreli. M. : Ag-ropromizdat (in Russian).
Estay, F.J.avier, Noriega R., Ureta J.P., Martín, W., & Colihueque, N. (2004). Reproductive performance of cultured brown trout (Salmo trutta L.) in Chile. Aquaculture Research, 35(5), 447–452. doi: 10.1111/j.1365-2109.2004.01036.x.
FAO (2014). The State of World Fisheries and Aquacul-ture Opportunities and challenges. Rome. http://www.fao.org/3/a-i3720e.pdf.
Gökçek, K., & Tepe, Y. (2009). The effects of feeding level and stocking density on the growth and feed efficiency of Himri barbel fry, Barbus luteus (Heckel, 1843). Turk. J. Vet. Anim. Sci., 33, 21–25. doi: 10.3906/vet-0704-21.
Hrynzhevskyi, M.V., Sherman, I.M., Hrytsyniak, I.I., Vasylets, S.V., Tretiak, O.M., Tomilenko, V.H., Oleksiienko, O.O., & Mruk, A.I. (2006). Orhanizatsiia selektsiino-pleminnoi roboty v rybnytstvi. Kyiv (in Ukrainian).
Kocaman, E.M., Bayir, A., Sirkecioğlu, A.N., Bayir, M., Yanik, T., & Arslan, H. (2009). Comparison of hatch-ery performances of rainbow trout (Oncorhynchus mykiss), brown trout (Salmo trutta fario) and brook trout (Salvelinus fontinalis) under the same environ-mental conditions. J Anim Vet Adv., 8(7), 1429–1431. http://medwelljournals.com/abstract/?doi=javaa.2009.1429.1431.
Lee, C.S., & Donaldson, E.M. (2001). General discussion on “Reproductive biotechnology in finfish aquacul-ture. Aquaculture, 197(1), 303–320. doi: 10.1016/S0044-8486(01)00591-9.
Mireșan, V., Cocan, D., Constantinescu, R., Răducu C., & Cadar, M. (2009). Phenotypic characterization of four breedingstock rainbow trout population (Oncorhyn-chus mykiss) from Fiad trout farm. Bulletin UASVM Animal Science and Biotechnologies, 66(1–2), 316–320. doi: 10.15835/buasvmcn-asb:66:1-2:3375.
Mireşan, V., Cocan, D., Constantinescu, R., Răducu, C., Feştilă, I., & Sărmas, I. (2010). Using body size indices for selection of future rainbow trout breeding (On-corhynchus mykiss, Walbaum 1792). Bulletin UASVM Animal Science and Biotechnologies, 67(1–2), 60–65.
Özgür, M.E., & Bayir, İ. (2013). Bir Alabalık İşletmesin-deki Gökkuşağı Alabalığı Damızlıklarının Üretim Per-formansı Üzerine Bir Çalışma. Biyoloji Bilimleri Araştırma Dergisi, 6(2), 1–7.
Shamspour, S., & Khara, H. (2016). Effect of age on reproductive efficiency of adult rainbow trout, On-corhynchus mykiss Walbaum, 1972. Iranian Journal of Fisheries Sciences, 15(3), 945–956.
Abstract views: 71 PDF Downloads: 75