中国水产科学2018，Vol.25Issue(2)：286-293,8.DOI:10.3724/SP.J.1118.2018.17178
水温对不同规格细鳞鲑摄食和生长的影响
Effects of water temperature on feeding and growth of the lenok Brachymystax lenok(Pallas)with different sizes
摘要
Abstract
This study was conducted to investigate the effects of water temperature and fish size on feeding and growth of the lenok Brachymystax lenok.The experimental fish of three sizes(7 g,68 g,and 169 g)were reared at five water temperatures (6℃, 10℃, 14℃, 18℃, 22℃) using artificial diet. The results showed that the maximum feeding rate (Cmax) was observed at 18℃ in small size, 14℃ and 18℃ in middle size, and 14℃ in large size (P<0.05). The highest special growth rate (SGRw) was obtained at 14℃ and 18℃ in small size and middle size, and at 14℃ in large size (P<0.05). The maximum feeding rate and energy content of the lenok increased with increased fish size, however, the special growth rate decreased with increased fish size. Multiple regression model of SGRw, Cmaxand Etof the lenok in relation to temperature and fish size was lnCmax=–6.8282+1.1603lnW+0.3729T–0.0095T2–0.0157TlnW, lnSGRw=–1.9390–0.2184lnW+0.4376T–0.0147T2and lnEt=1.0012+1.2070lnW–0.0002T2–0.0021TlnW, respectively, which indicated that there was interaction on Cmaxand Etof the lenok be-tween temperature and fish size (P<0.05), while no interaction on SGRwof the lenok between temperature and fish size was observed (P>0.05). The results suggested that the optimum temperature for different fish sizes of the lenok was similar, which was between 14–18℃ based on maximum feeding rate (Cmax) and specific growth rate in terms of wet weight (SGRw).关键词
细鳞鲑/水温/体重/摄食/生长Key words
Brachymystax lenok/water temperature/body weight/feeding/growth分类
农业科技引用本文复制引用
刘洋,刘红柏,徐革锋,牟振波,尹家胜..水温对不同规格细鳞鲑摄食和生长的影响[J].中国水产科学,2018,25(2):286-293,8.基金项目
黑龙江省自然科学基金项目(QC2015040) （QC2015040）
国家自然科学基金项目(31502188) （31502188）
现代农业产业技术体系建设专项资金资助项目(CARS-46) （CARS-46）
中央公益性院所基本业务费项目(HSY201412,HSY201602). （HSY201412,HSY201602）
