期刊
AQUACULTURE RESEARCH
卷 50, 期 2, 页码 390-399出版社
WILEY
DOI: 10.1111/are.13887
关键词
ALL-G-RICH (TM); Aurantiochytrium sp.; digestibility; fatty acids; Oreochromis niloticus; unsaturated
类别
资金
- Alltech (USA)
- Universidade Federal de Santa Catarina (UFSC-Brazil)
- Foundation for Support to Research and Innovation of the State of Santa Catarina (FAPESC, Brazil)
- National Council for Scientific and Technological Development (CNPq, Brazil)
This study evaluated the inclusion of Aurantiochytrium sp. (ALL-G-RICH (TM)), a source of docosahexaenoic acid (22:6 n-3, DHA), in the diet of Nile tilapia and its effect on growth performance indexes and body composition. Fish (initial mean weight 8.35 +/- 0.80 g) were fed different dietary inclusion levels of ALL-G-RICH (TM): 0.00, 0.05, 0.10, 0.20, and 0.40 g/kg and a control diet using cod liver oil (CLO), to provide DHA content comparable to the inclusion of 0.10 g/kg ALL-G-RICH (TM). Although there was no significant effect (p > 0.05) on weight gain, specific growth rate, feed conversion, protein retention rate, and proximal body composition, the inclusion of ALL-G-RICH (TM) in the Nile tilapia diet influenced positively the fatty acid profile in the body, resulting in a high DHA concentration. CLO-fed fish accumulated significantly more DHA compared to those fed 0.10 g/kg ALL-G-RICH (TM) (p < 0.05). A digestibility trial was also performed for ALL-G-RICH with 65.86 g mean-initial-weight fish. The digestibility was high for DHA (96.10%); however, it was low for palmitic acid (70.81%). The results show that the inclusion of up to 0.40 g/kg ALL-G-RICH (TM) can be used in Nile tilapia diets without impairing growth performance.
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