The Israeli Journal of Aquaculture - Bamidgeh 55(3), 2003, 179-186

REPLACING FISH MEAL IN RAINBOW TROUT
(ONCORHYNCHUS MYKISS) DIETS


Telat Yanik*
Fisheries Department, Agricultural Faculty, Ataturk University, Erzurum 25240, Turkey

Konrad Dabrowski
The Ohio State University School of Natural Resources, Columbus 43210, Ohio, USA

Sungchul C. Bai
Department of Aquaculture, Pukyong National University, Pusan, Korea


(Received 21.11.02, Accepted 11.5.03)

Key words: blood meal, bone and meat meal, fish meal replacement, Oncorhynchus mykiss, poultry by-products


Abstract

The effects of Ohio State University (OSU) meal (a mixture of blood meal, meat and bone meal, poultry by-products and feather meal), as partial or total replacement of fish meal was investigated. Thirty-two fish tanks, each containing 30 rainbow trout (initial mean weight 1.93 g), were fed one of 10 diets (the control had only two replicates) containing a different quantity of OSU meal for 14 weeks. The trout fed the diets containing 20% or 40% OSU meal grew similarly to the trout fed the fish meal based diet. Total replacement of the fish meal caused a significant reduction in growth (p<0.05)only at the 47% protein level and not at the 36%. The results of this study suggest that diets containing up to 75% OSU meal and 25% fish meal are sufficient for good growth in rainbow trout fry.


*Corresponding author: talatyanik@yahoo.com

home