The effects of feeding rates in juvenile Korean rockfish, (Sebastes schlegeli) reared at 17 A°C and 20 A°C water temperatures

被引：12

作者：

Mizanur, Rahman M. ^{[1
]}

Park, Gunhyun ^{[1
]}

Yun, Hyeonho ^{[1
]}

Lee, Seunghan ^{[1
]}

Choi, Sera ^{[1
]}

Bai, Sungchul C. ^{[1
]}

机构：

[1] Pukyong Natl Univ, Dept Marine Biomat & Aquaculture, Lab 9134B C21, Feeds & Foods Nutr Res Ctr, Pusan 608737, South Korea

来源：

AQUACULTURE INTERNATIONAL | 2014年 / 22卷 / 03期

关键词：

Feeding rate; Water temperature; Korean rockfish; Sebastes schlegeli; DRUM NIBEA-MIICHTHIOIDES; BODY-COMPOSITION; PARALICHTHYS-OLIVACEUS; OLIVE FLOUNDER; SUMMER SEASON; GROWTH; FREQUENCY; SEAWATER; PROTEIN; RATION;

D O I：

10.1007/s10499-013-9732-8

中图分类号：

S9 [水产、渔业];

学科分类号：

0908 ;

摘要：

Two feeding trials were conducted to determine the effects of feeding rates in juvenile Korean rockfish, (Sebastes schlegeli) reared at 17 and 20 A degrees C water temperature. Fish averaging 5.5 +/- A 0.2 g (mean +/- A SD) at 17 A degrees C and 5.5 +/- A 0.3 g (mean +/- A SD) at 20 A degrees C water temperature were randomly distributed into 18 indoor tanks. At each water temperature, triplicate tanks were randomly assigned to one of six different feeding rates: 2.8, 3.8, 4.1, 4.4, 4.7 % and satiation (4.99 % BW day(-1)) at 17 A degrees C and 2.8, 3.8, 4.1, 4.4, 4.7 % and satiation (5.0 % BW day(-1)) at 20 A degrees C. After 4 weeks of feeding trial, weight gain (WG) and specific growth rate of fish fed groups at satiation and 4.7 % (BW day(-1)) were significantly higher than those of fish fed groups at 2.8, 3.8 and 4.4 % (BW day(-1)) in both 17 and 20 A degrees C temperature. Feed efficiency and protein efficiency ratio of fish fed group at 2.8 % (BW day(-1)) was significantly lower than those of fish fed groups at 3.8, 4.1, 4.4 and 4.7 % (BW day(-1)) in both experiments. Hematocrit was significantly higher in fish fed group at 4.4 % (BW day(-1)) at 17 A degrees C, and there was no significant difference in hemoglobin content amongst all fish fed groups at 20 A degrees C. Glutamic oxaloacetic transaminase and glutamic pyruvic transaminase of the fish fed group at 2.8 % (BW day(-1)) were significantly higher than those of all other fish fed groups in both experiments. Broken line regression analysis of WG indicated that the optimum feeding rate of juvenile Korean rockfish was 4.48 % (BW day(-1)) at 17 A degrees C and 4.83 % (BW day(-1)) at 20 A degrees C. Therefore, these results indicated that the optimum feeding rate could be > 4.1 % but < 4.48 % at 17 A degrees C and > 4.4 % but < 4.83 % at 20 A degrees C. As we expected, current results have indicated that 5 g of juvenile Korean rockfish perform better at 17 A degrees C than at 20 A degrees C water temperature.

引用

页码：1121 / 1130

页数：10

共 22 条

[1]

AOAC, 1995, Official Methods of Analysis of the Association of Official Analytical Chemists, V2, P1

[2]

Bai S. C., 2009, GLOBAL AQUACULTURE A, P41

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