文献类型：期刊文献

英文题名：Effects of Salinity on Growth and Energy Budget of Juvenile Cobia, Rachycentron canadum

作者：Chen, Gang[1];Wang, Zhongliang[1,2,3,4,5];Wu, Zaohe[1,4,5];Gu, Binhe[1]

机构：[1]Guangdong Ocean Univ, Coll Fisheries, Dept Aquaculture, Zhanjiang 524025, Guangdong, Peoples R China;[2]Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China;[3]Chinese Acad Sci, S China Sea Inst Oceanog, Guangzhou 510301, Guangdong, Peoples R China;[4]Guangdong Key Lab Pathogen Biol & Epidemiol Aquat, Zhanjiang, Peoples R China;[5]Guangdong Key Lab Control Dis Aquat Econ Anim, Zhanjiang 524025, Peoples R China

年份：2009

卷号：40

期号：3

起止页码：374

外文期刊名：JOURNAL OF THE WORLD AQUACULTURE SOCIETY

收录：SCI-EXPANDED(收录号：WOS:000266601100006)、、Scopus(收录号：2-s2.0-66949165882)、WOS

基金：We appreciate the review provided by Jichang Jian, Qicun Zhou, Jun Tang, and Zhe Luo. We are especially grateful for the critical comments from an anonymous reviewer. This study was supported by The National High Technology Research and Development Program (863 Program) through grant number 2002AA603012.

语种：英文

外文摘要：The effects of salinity on the growth and energy budget of juvenile cobia, Rachycentron canadum, were evaluated. Triplicate tanks with ten fish per tank (initial weight 17.58 +/- 0.26 g/fish, mean +/- SD) reared at salinities of 5, 10, 15, 20, 25, 30, and 35 ppt were fed with fresh squid to satiety for 15 d. Results indicated that there were no significant differences in daily ration level in wet weight (RLw), dry weight (RLd), and energy (RLe) of the fish. There were also no significant variations in daily fecal production (f(e)) and apparent digestibility coefficient of energy (ADC(e)) among salinity treatments. Specific growth rates (SGRs) in wet weight (SGR(w)), dry weight (SGR(d)), and energy (SGR(e)) showed domed curves relative to salinity. Quadratic regression analyses of SGR(w), SGR(d), and SGR(e) against salinity indicated that the optimal salinity for maximal growth of juvenile cobia was 29.9, 29.9, and 28.5 ppt, respectively. Similar to the trend of SGR, food conversion efficiency for juvenile cobia in wet weight (FCEw), dry weight (FCEd), and energy (FCEe) increased with the increases in salinity, maximized at 30 ppt, and then decreased when salinity reached 35 ppt.