Bilal AKBULUT, TEMEL ŞAHİN, Nilgün AKSUNGUR, Muharrem AKSUNGUR

Effect of initial size on growth rate of rainbow trout, Oncorhynchus mykiss, reared in cages on the Turkish Black Sea Coast

Anahtar Kelimeler:

topak edilmiş yem, kültür balığı, Karadeniz, Türkiye, gökkuşağı alabalığı, büyüme oranı, büyüme performansı

A rearing trial was carried out to examine the effect of initial fish size on growth rate of rainbow trout, Oncorhynchus mykiss, reared in marine cages. The fish were introduced into the cages at the same stocking density (2.1 kg/$m^3$) and three different size groups (small: 52.1±10.8 g, n=2,250; medium: 77.6±11.7 g, n=l,500; large: 118.6±20.1 g, n=1,000) with two replicates. The fish were fed to satiation three times a day with commercial pelleted diet. The growth, feed conversion, daily feeding and final biomass were found to be significantly affected by stocking size (P<0.05). The specific growth rate in small group (1.11%) was better than other two groups (1.02%). The highest daily feeding rate was in large (1.66%), and followed by medium (1.55%) and small size groups. The feed conversion values varied between 1.37 and 1.70. There was a negative relationship between the final biomass and initial stocking size of fish. Growth performance of rainbow trout appeared to be depressed at large size group.

Keywords:

pelleted feeds, fish culture, Black Sea, Turkey, rainbow trout, growth rate, growth performance,

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Austreng, E., Storebakken, T. and Åsgård, T. 1987. Growth rate estimates for cultured Atlantic salmon and rainbow trout. Aquaculture, 60: 157-160.

Boyer, N.J., Van Toever, W. and Jansen, M.E. 1994. Effect of photoperiodon growth of Arctic charr under commercial production conditions. Prog. Fish-Cult. 56: 44-46.

Çelikkale, M.S., Akbulut, B. and Şahin, T. 1996. Deniz kafeslerinde yetiştirilen gökkuşağı alabalığı (Oncorhynchus mykiss, Walbaum 1792)’nda büyüme, yem değerlendirme ve stok yoğunlukları. E.Ü. Su Ürünleri Dergisi, 12 (3-4): 297-304.

Çelikkale, M.S., Okumuş, İ., Bşaçınar, N., Kurtoğlu, İ.Z. and Değirmenci, A. 1997. Gökkuşağı alabalığı (Oncorhynchus mykiss)’nda tuzluluğun büyüme, yem tüketimi ve yem değerlendirme üzerine etkisi.IX. Ulusal Su Ürünleri Sempozyumu. 17-19 Eylül 1997, Eğirdir.

Gjerde, B. 1986. Growth and reproduction in fish and shellfish. Aquaculture, 57: 37-55.

Holm, C.J., Refstie, T. and Bø, S. 1990. The Effect of fish density and feeding regimes on individual growth rate and mortality in rainbow trout (Oncorhynchus mykiss). Aquaculture, 89: 225-232.

Hortle, M.E. 1981. Seawater culture of rainbow trout. Tech. Rep. 2, Tasmania Dept. of Sea Fish, 47 pp.

Jobling, M. 1993. Bioenergetics: feed intake and energy portitioning. J.C. Rankin and F.B. Jensen (Eds) Fish Ecophysiology, Chapman and Hall, London, 1-44.

Jørgensen, E.H., Christian, J.S. and Jobling, M. 1993. Effects of stocking density on food intake, growth, growth performance and oxygen consumption in Arctic charr (Salvelinus alpinus). Aquaculture, 110: 191-204.

Okumuş, I., Başçınar, N., Kurtoğlu, İ.Z. and Yılmaz, K. 1998. Effect of stocking density on growth performance, size variation, food intake and conversion of the brook trout, Salvelinus fontinalis. The Proceedings of the First International Symposium on Fisheries and Ecology, 2-4 Sep. 1998, Trabzon, Turkey.

Papoutsoglou, S.E., Papaparaskeva-Papoutsoglou, E. and Alexis, M.N. 1987. Effect of density on growth rate and production of rainbow trout (Salmo gairdneri) over a full rearing period. Aquaculture, 66: 9-17.

Refstie, T. 1977. Effect of density on growth and survival of rainbow trout. Aquaculture, 11: 329-334.

Ricker, W.E. 1975. Computation and interpretation of biological statistics of fish populations. Fisheries Research Board of Canada Bulletin, 191: 1-382.

Schreck, C.B., Patino, R., Pring, C.K., Winton, J.R. and Holway, J.E. 1985. Effect of rearing density on indices of smoltification and performance of coho salmon, Oncorhynchus kisutch. Aquaculture, 45: 345- 358.

Storebakken, T. and Austreng, E. 1987. Ration level for salmonids II. growth, feed intake, protein digestibility, body composition, and feed conversion in rainbow trout weighting 0.5-1.0 kg. Aquaculture, 60: 207-221.

Sumpter, J.P. 1992. Control of growth of rainbow trout (Oncorhynchus mykiss). Aquaculture, 92: 299-320.

Şahin, T., Okumuş, İ. and Çelikkale, M.S. 1999. Evaluation of rainbow trout (Oncorhynchus mykiss) mariculture on the Turkish Black Sea coast. The Israeli Journal of Aquaculture-Bamidgeh, 51(1): 17-25.

Teskeredzic, E., Teskeredzic, Z., Tomec, M. and Modrusan, Z. 1989. A comparison of the growth performance of rainbow trout (Salmo gairdneri) in fresh and brackish water in Yugoslavia. Aquaculture, 77: 1-10.

Wedemeyer, G.A. 1976. Physiological response of juvenile coho salmon (Oncorhynchus kisutch) and rainbow trout (Salmo gairdneri) to handling and crowding stressin intensive fish culture. J. Fish. Res. Board Can., 33: 2699-2702.

Yıldırım, Ö., Çelikkale, M.S., Erkebay, C. and Kurtoğlu, İ.Z. 1998. Possibility of feeding rainbow trout (Oncorhynchus mykiss) with fishmonger by-products. The Proceedings of the First International Symposium on Fisheries and Ecology, 2-4 Sep. 1998, Trabzon, Turkey.