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丝兰提取物对三角鲂摄食、生长、饲料利用及废物排放的影响 被引量:4
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作者 鲍俊东 吴玉波 +3 位作者 王秀娟 冯如瑜 陈舒婷 马恒甲 《饲料工业》 北大核心 2019年第4期14-19,共6页
在室外养殖桶中进行8周饲养实验以评估丝兰提取物对三角鲂(Megalobrama terminalis)摄食、生长、饲料利用、鱼体组成及废物排放的影响。在三角鲂基础饲料中分别添加0%(Y0)、0.05%(Y1)、0.15%(Y2)、0.25%(Y3)、0.35%(Y4)和0.45%(Y5)的丝... 在室外养殖桶中进行8周饲养实验以评估丝兰提取物对三角鲂(Megalobrama terminalis)摄食、生长、饲料利用、鱼体组成及废物排放的影响。在三角鲂基础饲料中分别添加0%(Y0)、0.05%(Y1)、0.15%(Y2)、0.25%(Y3)、0.35%(Y4)和0.45%(Y5)的丝兰提取物,每天饱食投喂实验鱼(16.0±0.8)g两次。研究结果显示,随着丝兰提取物添加水平的增加,实验鱼的终末体重、增重率和特定生长率呈先上升后下降趋势。与对照组Y0相比,实验组Y3具有最高的终末体重、增重率、特定生长率、饲料氮储积效率,最低的饲料系数和磷废物排放量(P<0.05)。实验组Y2的FI显著高于对照组Y0(P<0.05),而各实验组与对照组Y0之间的饲料磷储积效率、肥满度、肝体指数、鱼体组成(水分、粗蛋白质、粗脂肪、灰分、磷和氨基酸)均无显著差异(P>0.05)。研究表明,在三角鲂饲料中添加0.25%的丝兰提取物可显著提高三角鲂的生长和饲料利用效率,并降低养殖废物排放。 展开更多
关键词 三角鲂 丝兰提取物 生长 饲料利用 废物排放
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Theory and application of stability for stochastic reaction diffusion systems 被引量:3
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作者 LUO Qi DENG FeiQi +2 位作者 MAO XueRong bao jundong ZHANG YuTian 《Science in China(Series F)》 2008年第2期158-170,共13页
So far, the Lyapunov direct method is still the most effective technique in the study of stability for ordinary differential equations and stochastic differential equations. Due to the shortage of the corresponding It... So far, the Lyapunov direct method is still the most effective technique in the study of stability for ordinary differential equations and stochastic differential equations. Due to the shortage of the corresponding It6 formula, this useful method has not been popularized in stochastic partial differential equations. The aim of this work is to try to extend the Lyapunov direct method to the It6 stochastic reaction diffusion systems and to establish the corresponding Lyapunov stability theory, including stability in probablity, asymptotic stability in probablity, and exponential stability in mean square. As the application of the obtained theorems, this paper addresses the stability of the Hopfield neural network and points out that the main results ob- tained by Holden Helge and Liao Xiaoxin et al. can be all regarded as the corollaries of the theorems presented in this paper. 展开更多
关键词 stochastic reaction diffusion system stability in probability asymptotic stability in probability exponentialstability in mean square
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