| 饲料中有效磷对吉富罗非鱼生长、体组成及生化指标的影响 |
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| 引用本文： | 白富瑾,罗莉,陈任孝,陈拥军,罗浩,李玉,李云,文华.饲料中有效磷对吉富罗非鱼生长、体组成及生化指标的影响[J].水产学报,2015,39(7):1024-1033. |
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| 作者姓名： | 白富瑾 罗莉 陈任孝 陈拥军 罗浩 李玉 李云 文华 |
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| 作者单位： | 西南大学动物科技学院, 淡水鱼类资源与生殖发育教育部重点实验室, 水产科学重庆市市级重点实验室, 重庆 400715,西南大学动物科技学院, 淡水鱼类资源与生殖发育教育部重点实验室, 水产科学重庆市市级重点实验室, 重庆 400715,西南大学动物科技学院, 淡水鱼类资源与生殖发育教育部重点实验室, 水产科学重庆市市级重点实验室, 重庆 400715,西南大学动物科技学院, 淡水鱼类资源与生殖发育教育部重点实验室, 水产科学重庆市市级重点实验室, 重庆 400715,新希望集团技术研发中心, 四川 成都 610041,新希望集团技术研发中心, 四川 成都 610041,西南大学动物科技学院, 淡水鱼类资源与生殖发育教育部重点实验室, 水产科学重庆市市级重点实验室, 重庆 400715,中国水产科学研究院长江水产研究所, 湖北 武汉 430223 |
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| 基金项目： | 国家自然科学基金(31101909);国家罗非鱼现代产业技术体系建设专项(CARS-49);重庆市特色效益水产业关键技术集成示范项目(渝农发2013[282]) |
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| 摘 要： | 为探讨饲料中不同有效磷水平对吉富罗非鱼幼鱼生长、体组成及生化指标的影响,以磷酸二氢钙(MCP)为磷源,配制含有效磷(AP)水平分别为0.52%(对照组)、0.61%、0.70%、0.78%、0.87%、0.96%和1.05%的7种等氮等能实用饲料,饲喂初始均重为(29.40±0.15)g的实验鱼。每种饲料设置3个重复,每个重复放25尾鱼,进行56 d的养殖实验。结果表明:饲料AP水平对罗非鱼的增重率(WGR)、特定生长率(SGR)、饲料系数(FCR)和脏体比(VSI)均有显著影响(P<0.05)。以WGR为评价指标,通过二次回归分析得出,罗非鱼饲料的适宜AP水平为0.80%。随饲料AP水平的增加,罗非鱼全鱼总磷和灰分含量显著增加并达到稳定(P<0.05),而全鱼水分含量差异不显著(P>0.05),全鱼和肠系膜、肝脏组织脂肪含量均显著下降(P<0.05)。用折线模型分析全鱼磷和灰分含量,得出罗非鱼幼鱼对饲料AP的需求量分别为0.81%和0.80%。随饲料AP水平的增加,肝脏苹果酸脱氢酶(MDH)、丙酮酸激酶(PK)、脂蛋白脂酶(LPL)和肝酯酶(HL)活性均显著增加(P<0.05)。血清谷丙转氨酶(GPT)活性显著下降(P<0.05),而碱性磷酸酶(AKP)活性显著上升(P<0.05),血清超氧化物歧化酶(SOD)活性呈先升后降趋势,在0.78%水平组达到最大值,而肝脏丙二醛(MDA)含量正好相反,在0.78%水平组最低。综上所述,研究结果表明:吉富罗非鱼(30~150 g)实用饲料的最适有效磷水平为0.80%。
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| 关 键 词： | 吉富罗非鱼 有效磷 生长 体组成 需要量 |
| 收稿时间： | 2015/2/10 0:00:00 |
| 修稿时间： | 5/9/2015 12:00:00 AM |
Effects of dietary available phosphorus on growth performance, body composition and biochemical indices of GIFT tilapia(Oreochromis niloticus) |
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| BAI Fujin,LUO Li,CHEN Renxiao,CHEN Yongjun,LUO Hao,LI Yu,LI Yun and WEN Hua.Effects of dietary available phosphorus on growth performance, body composition and biochemical indices of GIFT tilapia(Oreochromis niloticus)[J].Journal of Fisheries of China,2015,39(7):1024-1033. |
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| Authors: | BAI Fujin LUO Li CHEN Renxiao CHEN Yongjun LUO Hao LI Yu LI Yun and WEN Hua |
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| Institution: | Key Laboratory of Freshwater Reproduction and Development, Ministry of Education, Key Laboratory of Aquatic Science of Chongqing, College of Animal Science and Technology, Southwest University, Chongqing 400715, China,Key Laboratory of Freshwater Reproduction and Development, Ministry of Education, Key Laboratory of Aquatic Science of Chongqing, College of Animal Science and Technology, Southwest University, Chongqing 400715, China,Key Laboratory of Freshwater Reproduction and Development, Ministry of Education, Key Laboratory of Aquatic Science of Chongqing, College of Animal Science and Technology, Southwest University, Chongqing 400715, China,Key Laboratory of Freshwater Reproduction and Development, Ministry of Education, Key Laboratory of Aquatic Science of Chongqing, College of Animal Science and Technology, Southwest University, Chongqing 400715, China,Technology R&D Center of New Hope Group, Chengdu 610041, China,Technology R&D Center of New Hope Group, Chengdu 610041, China,Key Laboratory of Freshwater Reproduction and Development, Ministry of Education, Key Laboratory of Aquatic Science of Chongqing, College of Animal Science and Technology, Southwest University, Chongqing 400715, China and Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan 430223, China |
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| Abstract: | To evaluate the effects of dietary available phosphorus(AP)levels on growth performance,body composition and biochemical indices of GIFT tilapia(Oreochromis niloticus),seven practical diets(isonitrogenous and isocaloric)were formulated to contain 0.52%(basal diet,control),0.61%,0.70%,0.78%,0.87%,0.96% and 1.05% of AP supplied with monocalcium phosphate(MCP).Each diet was fed to triplicate groups of 25 fish with an initial average body weight of(29.40±0.15)g for 56 d.The results showed that dietary AP levels significantly affected weight gain rate(WGR),specific growth rate(SGR),feed conversion ratio(FCR)and viscerosomatic index(VSI)(P<0.05).Quadratic regression analysis projected the optimal dietary AP level of tilapia to 0.80% based on WGR.With the increase of dietary AP level,the total phosphorus and crude ash contents of whole body markedly increased and then leveled off(P<0.05),while moisture contents of whole body were not significantly affected(P>0.05),whereas crude lipid contents of the whole body,mesentery and liver significantly decreased(P<0.05).Broken-line analysis showed that dietary AP requirement of tilapia were 0.81% and 0.80% respectively,based on the total phosphorus and crude ash contents of whole body.With increasing dietary AP level,hepatic activities of malate dehydrogenase(MDH),pyruvate kinase(PK),lipoprotein lipase(LPL)and hepatic lipase(HL)markedly increased(P<0.05).With an increment of dietary AP level,activities of serum glutamic-pyruvic transaminase(GPT)significantly decreased(P<0.05),but alkaline phosphatase(AKP)markedly increased(P<0.05).Serum superoxide dismutase(SOD)activity initially increased and then decreased,but liver MDA concentration showed contrary trends to that of SOD as dietary AP level increased.Highest hepatic SOD activity and the lowest liver MDA concentration were both recorded at 0.78% AP.In conclusion,the overall results in this study suggest that the optimal dietary AP level for GIFT tilapia(30-150 g)was 0.80%. |
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| Keywords: | GIFT tilapia available phosphorus growth body composition requirement |
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