{"title":"EFFECT OF ALA-GLN FEEDING ON GROWTH, ANTIOXIDANT LEVEL,AND IMMUNITY OF CYPRINUS CARPIO VAR. JIAN","authors":"W. Gui","doi":"10.3724/sp.j.1035.2012.00837","DOIUrl":null,"url":null,"abstract":"This study was carried out using healthy Cyprinus with the initial body weight of(33.52±0.17) g in a single recirculating system for 8 weeks.Diets with equal levels of protein(35 g/kg) and energy(17 kJ/g) were administered to the Cyprinus at concentrations of 0.0 %(control diet) and 0.5%(trial diet) Ala-Gln of dietary dry matter in five different feeding modes: continuous 8 weeks of control diet(group I or control),trial diet at an interval of 2 weeks(group II),trial diet at 4 weeks and then control diet at 4 weeks(group III),the contrary to group Ⅲ(group IV) and continuous 8-week trial diet(group V).The trail was conducted to investigate the effects of different feeding mode of Ala-Gln on growth,immunity and antioxidant in Cyprinus.Our results indicated that growth rates under all different feeding modes of Ala-Gln were significantly higher than that of the control group(P0.05).Growth rate of Ⅱ was higher than that of Ⅲ,Ⅳ,Ⅴgroups(P0.05),and growth rate of Ⅲ was higher than that of Ⅴgroup(P0.05).Serum SOD of the Ⅳ and Ⅴgroups were significantly higher than the control group(P0.05),and serum SOD of the Ⅴgroup was significantly higher than those of Ⅱ and Ⅲ groups(P0.05).GSH-Px in hepatopancreas of different feeding modes were significantly higher than that of the control group(P0.05),Serum GSH-Px of Ⅳ and Ⅴgroups were higher than that of the control group(P0.05).LZM in the head kidneys of the Ala-Gln groups were higher than the control group,only group Ⅱ showed no significant difference(P0.05),LZM in the spleen of the groups Ⅳ and Ⅴ were significantly higher than that of the control group(P0.05).In the current experiment,we concluded that adding Ala-Gln could improve the growth,immunity and antioxidant levels of Cyprinus.There were significant differences of different feeding modes.Given economical efficiency and practicability,feeding mode with 2-week intervals were suggested in the practical aquaculture of Cyprinus.","PeriodicalId":6937,"journal":{"name":"水生生物学报","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2012-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"水生生物学报","FirstCategoryId":"1089","ListUrlMain":"https://doi.org/10.3724/sp.j.1035.2012.00837","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 1
Abstract
This study was carried out using healthy Cyprinus with the initial body weight of(33.52±0.17) g in a single recirculating system for 8 weeks.Diets with equal levels of protein(35 g/kg) and energy(17 kJ/g) were administered to the Cyprinus at concentrations of 0.0 %(control diet) and 0.5%(trial diet) Ala-Gln of dietary dry matter in five different feeding modes: continuous 8 weeks of control diet(group I or control),trial diet at an interval of 2 weeks(group II),trial diet at 4 weeks and then control diet at 4 weeks(group III),the contrary to group Ⅲ(group IV) and continuous 8-week trial diet(group V).The trail was conducted to investigate the effects of different feeding mode of Ala-Gln on growth,immunity and antioxidant in Cyprinus.Our results indicated that growth rates under all different feeding modes of Ala-Gln were significantly higher than that of the control group(P0.05).Growth rate of Ⅱ was higher than that of Ⅲ,Ⅳ,Ⅴgroups(P0.05),and growth rate of Ⅲ was higher than that of Ⅴgroup(P0.05).Serum SOD of the Ⅳ and Ⅴgroups were significantly higher than the control group(P0.05),and serum SOD of the Ⅴgroup was significantly higher than those of Ⅱ and Ⅲ groups(P0.05).GSH-Px in hepatopancreas of different feeding modes were significantly higher than that of the control group(P0.05),Serum GSH-Px of Ⅳ and Ⅴgroups were higher than that of the control group(P0.05).LZM in the head kidneys of the Ala-Gln groups were higher than the control group,only group Ⅱ showed no significant difference(P0.05),LZM in the spleen of the groups Ⅳ and Ⅴ were significantly higher than that of the control group(P0.05).In the current experiment,we concluded that adding Ala-Gln could improve the growth,immunity and antioxidant levels of Cyprinus.There were significant differences of different feeding modes.Given economical efficiency and practicability,feeding mode with 2-week intervals were suggested in the practical aquaculture of Cyprinus.