Nutrient efficacy of microalgae as aquafeed additives for the adult black tiger prawn, Penaeus monodon

被引:18
|
作者
Li, Yan [1 ,2 ]
Xiao, Guoqiang [1 ,2 ,3 ]
Mangott, Arnold [1 ,2 ,4 ]
Kent, Megan [1 ,2 ]
Pirozzi, Igor [1 ,2 ]
机构
[1] James Cook Univ, Ctr Sustainable Trop Fisheries & Aquaculture, Townsville, Qld 4811, Australia
[2] James Cook Univ, Coll Marine & Environm Sci, Townsville, Qld 4811, Australia
[3] Zhejiang Mariculture Res Inst, Wenzhou, Zhejiang, Peoples R China
[4] MBD Energy Ltd, Melbourne, Vic, Australia
关键词
microalgae efficacy; aquafeed; immune response; nutritional value; feeding optimization; aquaculture sustainable development; LITOPENAEUS-VANNAMEI BOONE; FATTY-ACID; LIQUID-CHROMATOGRAPHY; GROWTH-PERFORMANCE; CRASSOSTREA-GIGAS; PACIFIC OYSTERS; CULTURE TANKS; SHRIMP; ASTAXANTHIN; DIETS;
D O I
10.1111/are.12815
中图分类号
S9 [水产、渔业];
学科分类号
0908 ;
摘要
This study used a small amount of several lyophilized microalgae (5% of dry weight in aquafeed) to feed adult black tiger prawns Penaeus monodon for 4 weeks, aiming to promote prawn health and nutritional level. Apart from slight increases in ash content, chlorophyll and beta-carotene in the microalgae-added feeds, there was no difference from the commercial diet in their biochemical composition. After 28 days of feeding, prawn body length, body weight, condition index and also total amount of fatty acids and amino acids of the flesh (2nd abdominal segment) were not affected by microalgae additives as compared with the control commercial dietfed group (P > 0.05). Prawns fed the microalgae diets, however, had a relatively better survival rate than those fed the commercial control diet, although no statistical significance was detected in any except for the diatom Melosira sp. The elevated survival rate was concomitant with a higher phagocytosis rate and superoxide dismutase (SOD) activity in the immune response analysis, and significantly a higher astaxanthin content detected in the tail muscle of microalgae diet-fed prawns (5.36-10.78 ng of astaxanthin per gram of muscle DW). These findings demonstrated that low-inclusion microalgal additives in prawn diets over a short feeding period (4 weeks) can result in healthier adult prawn, and hence could contribute to the development of an optimized feeding strategy for prawn aquaculture close to harvesting.
引用
收藏
页码:3625 / 3635
页数:11
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