文献类型：期刊文献

中文题名：Effect of various Na/K ratios in low-salinity well water on growth performance and physiological response of Pacific white shrimp Litopenaeus vannamei

英文题名：Effect of various Na/K ratios in low-salinity well water on growth performance and physiological response of Pacific white shrimp Litopenaeus vannamei

作者：Liu Hongyu[1];Tan Beiping[1];Yang Jinfang[1];Lin Yingbo[2];Chi Shuyan[1];Dong Xiaohui[1];Yang Qihui[1]

机构：[1]Guangdong Ocean Univ, Coll Fisheries, Lab Aquat Anim Nutr & Feed, Zhanjiang 524025, Peoples R China;[2]Karolinska Hosp, Canc Ctr Karolinska, Dept Pathol & Oncol, SE-17176 Stockholm, Sweden

年份：2014

卷号：32

期号：5

起止页码：991

中文期刊名：中国海洋湖沼学报：英文版

外文期刊名：CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY

收录：SCI-EXPANDED(收录号：WOS:000340879900003)、CSTPCD、、Scopus(收录号：2-s2.0-84947777947)、WOS、CSCD、CSCD2013_2014

基金：Supported by the National Natural Science Foundation of China (Nos. 30871928, 31272673), the Special Fund for Agro-Scientific Research of Public Interest (No. 201003020), and the High Level Talent Project of Guangdong Province Universities and Colleges Pearl River Scholar (GDUPS) (No. 2011)

语种：英文

中文关键词：太平洋白对虾;低盐度水;南美白对虾;氯化钾;生理反应;生长性能;比值;钠

外文关键词：Litopenaeus vannamei; low-salinity well water; Na/K ratio; osmoregulation; nitrogen metabolism; immunity

中文摘要：To investigate the influence of sodium to potassium(Na/K) ratios on the growth performance and physiological response of the Pacific white shrimp( Litopenaeus vananmei), various concentrations of KCl were added to low-salinity well water(salinity 4) in an 8-week culture trial. Six treatments with Na/K ratios of 60:1, 42:1, 33:1, 23:1, 17:1, and 14:1 were replicated in triplicate. The highest weight-gain rate(3 506±48)% and survival rate(89.38±0.88)% was observed in well water with Na/K ratios of 23:1 and 42:1, respectively, while the feed conversion ratio(1.02±0.01), oxygen consumption, and ammonia-N excretion rate was the lowest in the medium with a Na/K ratio of 23:1. Gill Na +-K +-ATPase activity, as an indicator of osmoregulation, peaked in the treatment where the Na/K ratio was 17:1. The total hemocyte count, respiratory burst, and immune-related enzyme activities(ALP, LSZ, PO, and SOD) of L. vananmei were affected significantly by Na/K ratios( P <0.05). After challenged with Vibrio harveyi, the cumulative mortality of shrimp reared in a Na/K ratio of 23:1(30±14.14)% was significantly lower than the control(75±7.07)%. In conclusion, the addition of K + to low-salinity well water in L. vannamei cultures is feasible. Na/K ratios ranging from 23:1 to 33:1 might improve survival and growth. Immunity and disease resistance are also closely related to the Na/K ratio of the low-salinity well water. The findings may contribute to the development of more efficient K + remediation strategies for L. vananmei culture in low-salinity well water.

外文摘要：To investigate the influence of sodium to potassium (Na/K) ratios on the growth performance and physiological response of the Pacific white shrimp (Litopenaeus vananmei), various concentrations of KCl were added to low-salinity well water (salinity 4) in an 8-week culture trial. Six treatments with Na/K ratios of 60:1, 42:1, 33:1, 23:1, 17:1, and 14:1 were replicated in triplicate. The highest weight-gain rate (3 506 +/- 48)% and survival rate (89.38 +/- 0.88)% was observed in well water with Na/K ratios of 23:1 and 42:1, respectively, while the feed conversion ratio (1.02 +/- 0.01), oxygen consumption, and ammonia-N excretion rate was the lowest in the medium with a Na/K ratio of 23:1. Gill Na+-K+-ATPase activity, as an indicator of osmoregulation, peaked in the treatment where the Na/K ratio was 17:1. The total hemocyte count, respiratory burst, and immune-related enzyme activities (ALP, LSZ, PO, and SOD) of L. vananmei were affected significantly by Na/K ratios (P < 0.05). After challenged with Vibrio harveyi, the cumulative mortality of shrimp reared in a Na/K ratio of 23:1 (30 +/- 14.14)% was significantly lower than the control (75 +/- 7.07)%. In conclusion, the addition of K+ to low-salinity well water in L. vannamei cultures is feasible. Na/K ratios ranging from 23:1 to 33:1 might improve survival and growth. Immunity and disease resistance are also closely related to the Na/K ratio of the low-salinity well water. The findings may contribute to the development of more efficient K + remediation strategies for L. vananmei culture in low-salinity well water.