Optimal Supplemental Level of Dietary Wakame for Juvenile Penaeus monodon

LU Xue; NIU Jin; LIN Heizhao; CHEN Xu; HUANG Zhong; WANG Jun; WANG Yun; JIANG Shigui

doi:10.3969/j.issn.1006-267x.2014.06.009

Chinese Journal of Animal Nutrition >

2014 , Vol. 26 >Issue 6: 1496 - 1502

DOI: https://doi.org/10.3969/j.issn.1006-267x.2014.06.009

Aquaculture Nutrition

Optimal Supplemental Level of Dietary Wakame for Juvenile Penaeus monodon

LU Xue ,
NIU Jin ,
LIN Heizhao ,
CHEN Xu ,
HUANG Zhong ,
WANG Jun ,
WANG Yun ,
JIANG Shigui

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1. Key Laboratory of South China Sea Fishery Resources Exploitation & Utilization, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510300, China;
2. Wuxi Fisheries College, Nanjing Agricultural University, Wuxi 214081, China

Received date: 2013-12-23

Online published: 2014-05-30

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Abstract

This experiment was conducted to investigate the effects of dietary wakame content on growth performance, body composition and immunity of juvenile Penaeus monodon, and to find out the optimal supplemental level of dietary wakame. Seven experimental diets were formulated with 0 (control), 1%, 2%, 3%, 4%, 5% and 6% wakame, respectively, and fed to 7 groups of juvenile Penaeus monodon with an initial body weight of (0.69±0.03) g for 56 days. Each group had 3 replicates and each replicate had 40 shrimps. The results showed as follows: weight gain rate (WGR), specific growth rate (SGR), protein efficiency ratio (PER) and protein retention rate (PRR) were firstly increased and then decreased with dietary wakame content increasing, and the maximum values of them were all found in 2% group. Feed conversion ratio (FCR) was firstly decreased and then increased with dietary wakame content increasing, and the minimum value of FCR was 1.13 when the dietary wakame content was 2%. The range of survival rate (SR) was 65% to 80%, and the maximum value of SR was found in 2% group, but no significant difference was observed in SR among all groups (P>0.05). Dietary wakame content had no significant effects on the contents of moisture and ash in whole body (P>0.05). Crude protein content in whole body in 3% group was significantly higher than that in control group and 1% group (P0.05). Serum superoxide dismutase (SOD) activity in control group was significantly lower than that in 6% group (P<0.05). Serum glutathione (GSH) content and glutathione peroxidase (GSH-Px) activity were firstly increased and then decreased with dietary wakame content increasing, and the maximum values of them were all found in 2% group. Analysis of quadratic regression model based on WGR and PRR, the optimal level of dietary wakame for juvenile Penaeus monodon is 2.17% and 2.87%, respectively.

Key words： Penaeus monodon; wakame; growth performance; body composition; immunity

Cite this article

LU Xue , NIU Jin , LIN Heizhao , CHEN Xu , HUANG Zhong , WANG Jun , WANG Yun , JIANG Shigui . Optimal Supplemental Level of Dietary Wakame for Juvenile Penaeus monodon[J]. Chinese Journal of Animal Nutrition, 2014 , 26(6) : 1496 -1502 . DOI: 10.3969/j.issn.1006-267x.2014.06.009

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