文献类型：期刊文献

英文题名：Partial replacement of fishmeal by soybean meal in diets for juvenile cobia (Rachycentron canadum)

作者：Zhou Q.-C.[1,2,4];Mai K.-S.[2,3];Tan B.-P.[3];Liu Y.-J.[2]

机构：[1]Ocean Univ Zhanjiang, Coll Fisheries, Lab Aquat Anim Nutr & Feed, Zhanjiang 524025, Peoples R China;[2]Zhongshan Univ, Sch Life Sci, Lab Fish Nutr, Guangzhou, Peoples R China;[3]Ocean Univ China, Aquaculture Res Lab, Qingdao, Peoples R China

年份：2005

卷号：11

期号：3

起止页码：175

外文期刊名：AQUACULTURE NUTRITION

收录：SCI-EXPANDED(收录号：WOS:000229193100003)、、Scopus(收录号：2-s2.0-20044386493)、WOS

语种：英文

外文关键词：Rachycentron canadum; fishmeal; soybean meal; growth; haematological characteristics

外文摘要：An 8-week feeding experiment was conducted in floating cages (1.5 x 1.0 x 2.0 m) to determine the potential use of defatted soybean meal (roasted and solvent-extracted) as a partial replacement of fishmeal in the isonitrogenous (approximately 450 g kg(-1) CP [crude protein]) diet for juvenile cobia with an initial average weight of about 8.3 g. Diets were formulated to include 0, 100, 200, 300, 400, 500 and 600 g kg(-1) (diets D0, D10, D20, D30, D40, D50 and D60, respectively) of fishmeal protein being substituted by defatted soybean meal without methionine supplementation. The results showed that weight gain rate decreased significantly when the replacement level of fishmeal protein was increased from 400 g kg(-1) to 500 g kg(-1), and the D60 diet was the lowest in all groups. These results indicate that up to 400 g kg(-1) of fishmeal protein can be replaced by defatted soybean meal without causing significant reduction in growth. Feed conversion ratio (FCR) and protein efficiency ratio (PER) were significantly affected by the replacement level of fishmeal protein being substituted by defatted soybean meal, when the replacement level of fishmeal protein was 200 g kg(-1) (diet, D20), FCR was the lowest and PER was the highest. There were no significant differences in the moisture, lipid, crude protein and ash content in whole body and muscle, while lipid content in liver increased as the dietary soybean meal replacement levels increased. There were significant differences in haemoglobin, haematocrit, red blood cell, plasma glucose and triglyceride concentration in fish fed diets with different soybean meal replacement levels. Results of this trial indicated that the optimum level of fishmeal protein replacement with defatted soybean meal, determined by quadratic regression analysis was 189.2 g kg(-1), on the basis of maximum weight gain.