%0 Journal Article
%T EFFECTS OF DIETARY CHITOSAN ON GROWTH PERFORMANCE, BODY COMPOSITION AND NON-SPECIFIC IMMUNITY OF JUVENILE ONCORHYNCHUS MYKISS<br>壳聚糖对虹鳟(Oncorhynchus mykiss)幼鱼生长性能、体组成及非特异性免疫的影响
%A JIANG Jin-Kun
%A WANG Ji-Ying
%A ZHANG Li-Min
%A LIU Xu-Dong
%A FENG De-Zhi
%A JIANG Ke-Jun
%A ZHANG De-Rui
%A <br>蒋锦坤
%A 王际英
%A 张利民
%A 柳旭东
%A 冯德智
%A 姜柯君
%A 张德瑞
%J 海洋与湖沼
%D 2012
%I 
%X Rainbow trout was cultured widespread all around the world, but the healthy of rainbow trout was generally inhibited by high-density culture. A 50-d feeding trial was carried out to investigate the effects of dietary chitosan on growth performance, body composition and non-specific immunity of juvenile Oncorhynchus mykiss (98.26±0.25)g]. Five isonitrogenous and isoenergetic diets were formulated by adding 0% (D0, control group), 0.25% (D1), 0.50% (D2), 1.00% (D3) and 2.00% (D4) chitosan to the basal diet, in which casein and fish meal were used as the protein source and fish oil as the lipid source, respectively. Results showed that: weight gain rate (WGR) and specific growth rate (SGR) increased whereas feed conversion ratio (FCR) decreased significantly (P<0.05) with chitosan addition No significant differences were found among chitosan-supplemented groups (P>0.05). Viscerosomatic index (VSI) decreased (P<0.05) with dietary chitosan supplementation (P<0.05). However, there were no statistical differences in hepatosomatic index (HSI), spleensomatic index (SSI), condition factor (CF) or survival ratio (SR) (P>0.05). Lipid content in whole fish, muscle and liver were decreased obviously by dietary chitosan (P<0.05) , while no change existed in moisture and protein contents (P>0.05). Alkaline phosphatase (ALP) activity in serum of D3 and D4 groups was decreased significantly (P<0.05) and there were no differences among other groups (P>0.05). Serum acid phosphatase (ACP) activity decreased as dietary chitosan supplementation level increased (P<0.05), while lysozyme (LZM) activity was increased (P<0.05). Total antioxidant capacity (T-AOC) of D4 group was significantly higher than that of the control and D1 group (P<0.05) and no differences were found among other groups (P>0.05). Superoxide dismutase (SOD) was not affected by dietary chitosan (P>0.05).
%K Chitosan
%K Oncorhynchus mykiss
%K Growth performance
%K Body composition
%K Non-specific immunity<br>壳聚糖
%K 虹鳟
%K 生长性能
%K 体组成
%K 非特异性免疫
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=2D9C75573FA3E416&jid=10F18692CD69EACA2DF7FC109993D35C&aid=C0EBDC11BE495BC1B654B1806CFDEDFF&yid=99E9153A83D4CB11&vid=BE33CC7147FEFCA4&iid=E158A972A605785F&sid=B3AAD7DC3C912B50&eid=7F9B7E84827A650F&journal_id=0029-814X&journal_name=海洋与湖沼&referenced_num=0&reference_num=0