【作者】 张树明； 孙增民； 李婧； 单世涛； 王旭莉； 吉红；

【Author】 Zhang Shuming~1,Sun Zengmin~1,Li Jing~1,Shan Shitao~2,Wang Xuli~3,Ji Hong~(2,3,4*) (1.Fisheries Working Station in Shaanxi Province,Weinan Shaanxi 714000 China; 2.Fisheries Experimental and Demonstration Station,Northwest A & F University,Ankang Shaanxi 725000,China;3. College of Animal and Technology,Northwest A & F University,Yangling Shaanxi 712100,China;4.Fisheries Research Institute,Northwest A&F University,Yangling 712100,China)

【机构】 陕西省水产工作总站； 西北农林科技大学安康水产试验示范站； 西北农林科技大学动物科技学院； 西北农林科技大学水产科学研究所；

【摘要】 配制蛋白和脂肪水平不同的三种饲料,即低蛋白高脂饲料(CP38%、EE9.0%,LH group),高蛋白低脂饲料(CP41.5%,EE6.0%,HL group)和高蛋白高脂饲料(CP41.5%、EE9.0%,HH group),并以高蛋白低脂商品饲料组(CP40.76%、EE3.52%,CM group)为对照,在室内水泥池中饲喂体质量为67.18g的鲤35 d,通过对试验鱼生长、生物学性状、体成份、血清指标及消化酶活性的测定,探讨蛋白和油脂对鲤生长及代谢的影响。结果表明,低蛋白高脂组较商品饲料组增重率有所升高,饲料系数有所降低,高蛋白低脂组增重率、蛋白质效率显著高于商品饲料组(P<0.05),而饲料系数相反;商品饲料组肝胰脏指数显著高于其它三组,而肝胰脏脂肪含量相反;商品饲料组血清总蛋白含量显著低于其它三组(P<0.05),尿素氮含量显著低于41.5/9.0组(P<0.05);商品饲料组肝胰脏葡萄糖-6-磷酸脱氢酶活力显著高于其它三组(P<0.05);肝胰脏苹果酸脱氢酶活力低蛋白高脂组显著高于其它三组(P<0.05)。研究表明鲤饲料中41%的饲料蛋白水平和6%的脂肪水平较有利于鲤的生长,这一效果与其影响试验鱼的蛋白和脂肪代谢过程有关。更多还原

【Abstract】 To further study the effect of protein and lipid level on growth performance and metabolism in common carp,a feeding trial was conducted by using the experimental fish(the initial body weight was 67.18g) fed with different protein and lipid levels feed for 35d.Protein and lipid levels of experimental feed were 38% and 9%(LH group),41.5%and 6%(HL group) and 41.5%and 9%(HH group),respectively.A commercial feed (40.76%and 3.53%,CM group) was treated as control.The result showed that the growth performance were not significantly different among four groups although they were higher in HL group.The weight gaining growth rate of HL group was significantly higher than that of CM group(P<0.05),feed conversion rate was opposite;the protein efficiency of HL group was significantly higher than those of LH group and HH group;the intestine length index of HL groupwas significantly lower than that of other three groups(P<0.05),and the hepatopancreas index of LH group was significantly different with other three groups(P<0.05);relative fatness and viscera index among groups had no significant difference(P>0.05).There was no significantly difference among groups in muscle moisture,crude protein,crude fat and hepatopancreas moisture,the content of crude fat in CM was significantly lower than that of other three groups(P<0.05);levels of alanine transaminase(ALT),aspartate aminotransferase(AST),albumin(ALB),total cholesterol(CHOL),triglyceride(TG) and blood glucose(GLU) of every group had no significant difference(P>0.05),but the content of total protein(TP) in CM group was significantly lower than those in other three groups(P<0.05);blood urea nitrogen BUN of HH group was significantly higher than that of CM group(P<0.05);glucose-6-phosphate dehydrogenase(G6PDH)activity of CM group was significantly higher than those of other three groups(P<0.05),while malate dehydrogenase(MDH) activity in LH group was significantly higher than other three groups(P<0.05).The present study indicated that dietary protein level of 41%and lipid level of 6%would be recommendable,this might be related to its influence on protein and lipid metabolism.更多还原