Effects of dietary chromium picolinate supplementation on serum glucose, cholesterol and minerals of rainbow trout (Oncorhynchus mykiss)     

F.Z. Küçükbay  H. Yazlak  N. Sahin  M.N. Cakmak 《Aquaculture International》2006,14(3):259-266

The effect of chromium (chromium picolinate, CrPic) supplementation at various levels (0, 400, 800 or 1600 μg Cr/kg diet) on serum concentrations of glucose and cholesterol and on serum and liver concentrations of Cr, Zn, Cu and Fe of rainbow trout (Oncorhynchus mykiss) was evaluated. One-year-old rainbow trout (n=120) were randomly assigned to four treatment groups, each with two replicates of 15 fish. The fish were fed either a control diet or the control diet supplemented with either 400, 800 or 1600 μg Cr/kg diet. Serum glucose and cholesterol concentrations decreased (p=0.001) with higher dietary chromium supplementation. Increasing dietary chromium supplementation linearly increased serum chromium and zinc concentrations (p=0.001). Serum copper and iron concentrations did not change (p>0.10) as dietary chromium supplementation increased. Liver chromium and zinc concentrations linearly increased (p=0.001). Also, liver Cu and Fe concentrations did not change (p>0.10) as dietary chromium supplementation increased. The results of present study conclude that supplemental chromium to the diet of rainbow trout influences serum and liver Cr and Zn concentrations, thus most probably functions of the organs as well as the welfare of raibow trout.  相似文献   

高密度脂蛋白与冠状动脉支架植入术后再狭窄的关系     

丁旻珺刘建平  江柳月李晓燕 《勤云标准版测试》2007,15(10):783-785

目的探讨再次入院造影复查时血高密度脂蛋白胆固醇水平与冠状动脉支架植入术后再狭窄的关系。方法根据再次冠状动脉造影复查结果，将370例行冠状动脉内支架术并随访造影结果的患者分为再狭窄组与非再狭窄组，对两组临床情况及生物化学指标进行回顾性分析。结果370例患者中有487支靶血管置入支架，94例患者的123支靶血管发生再狭窄。单因素分析显示再狭窄组的高密度脂蛋白胆固醇水平显著低于非再狭窄组，差异有显著性（P〈0．05）；二分类多因素Logistic回归分析显示低高密度脂蛋白胆固醇水平（高密度脂蛋白胆固醇≤1．04mmol/L）为冠状动脉内再狭窄的独立危险因素。结论提示血高密度脂蛋白胆固醇水平与冠状动脉支架植入术后再狭窄密切相关。  相似文献   

Effect of plant fruits – Indian gall nut,bedda nut and gooseberry – on hypercholesterolemic rats     

Nalini  D.  Kapoor  R. 《Plant foods for human nutrition (Dordrecht, Netherlands)》1999,53(4):343-349

The effect of supplementation of three fruits, Indian gall nut, bedda nut and gooseberry, on serum lipid levels and excretion of bile acids was investigated. Rats made hypercholesterolemic by feeding hypercholesterolemia inducing diet (HID) for a period of 30 days were used as the test model. Feeding of a dried powder of these fruits along with the HID resulted in significant (p<0.01) reduction in total cholesterol, LDL cholesterol and triglycerides. HDL cholesterol remained unchanged in groups fed gall nut and bedda nut. However, the levels were significantly (p<0.01) higher in groups fed mixed and gooseberry diets in comparison to the control diet. Excretion of bile acids was found to be significantly (p<0.01) higher in animals receiving the three fruits in combination in comparison to those receiving the individual fruits.  相似文献   

Coconut kernel protein modifies the effect of coconut oil on serum lipids   总被引：1，自引：1，他引：0  

K.G. Padmakumaran Nair  T. Rajamohan  P.A. Kurup 《Plant foods for human nutrition (Dordrecht, Netherlands)》1998,53(2):133-144

Feeding coconut kernel along with coconut oil in human volunteers has been found to reduce serum total and LDL cholesterol when compared to feeding coconut oil alone. This effect of the kernel was also observed in rats. Since many plant proteins have been reported to exert a cholesterol lowering effect, a study was carried out on the effect of isolated kernel protein in rats. Feeding kernel protein resulted in lower levels of cholesterol, phospholipids and triglycerides in the serum and most tissues when compared to casein fed animals. Rats fed kernel protein had (1) increased hepatic degradation of cholesterol to bile acids, (2) increased hepatic cholesterol biosynthesis, and (3) decreased esterification of free cholesterol. In the intestine, however, cholesterogenesis was decreased. The kernel protein also caused decreased lipogenesis in the liver and intestine. This beneficial effect of the kernel protein is attributed to its very low lysine/arginine ratio 2.13% lysine and 24.5% arginine.  相似文献   

酵母铬对肉仔鸡脂类代谢及生产性能影响的研究   总被引：23，自引：0，他引：23  

刘彩霓  呙于明  涂荣秀 《动物营养学报》1997,(4)

本试验以艾维茵肉仔母鸡为研究对象，研究了日粮添加40μg／kg酵母铬对肉仔鸡生产性能及脂类代谢的影响。试验结果表明：日粮补铬对生产性能无显著影响（P＞0．05）；补铬显著降低了肉仔鸡的腹胀（P＜0.05）和血清中甘油三酯（TG）（P＜0．01）的含量；而肝脂含量及血清中的高密度脂蛋白胆固醇（HDL－C）、低密度脂蛋白胆固醇（LDL－C）、总胆固醇（TC）在处理间无显著差异（P＞0．05）。  相似文献   

黄鳝血清胆固醇含量与体长关系的研究     

张廷华  曾凡坤  李念  陈亮  田晓花 《安徽农业科学》2006,34(18):4608-4609

对32尾不同体长黄鳝血清中胆固醇含量进行测定,结果表明,黄鳝的体长(x)与血清胆固醇含量(y)之间存在极显著的直线关系,即y=6.059x+2.164,相关系数r=0.628 6。  相似文献   

The role of phospholipids in nutrition and metabolism of teleost fish   总被引：1，自引：0，他引：1  

Douglas R. Tocher  Eldar . Bendiksen  Patrick J. Campbell  J. Gordon Bell 《Aquaculture (Amsterdam, Netherlands)》2008,280(1-4):21-34

It has been known for almost 25 years now that inclusion of intact phospholipids in the diet could improve culture performance of various freshwater and marine fish species. The primary beneficial effect was improved growth in both larvae and early juveniles, but also increased survival rates and decreased incidence of malformation in larvae, and perhaps increased stress resistance. Determination of absolute dietary requirements has been hampered by the use, in different dietary trials, of a wide range of phospholipid preparations that can vary greatly both in phospholipid content and class composition. Larval studies have been compromised further by the need on many occasions to supply phospholipid through enrichment of live feeds with subsequent re-modelling of the phospholipid and fatty acid compositions. Generally, the levels of phospholipid requirement are around 2–4% of diet for juvenile fish and probably higher in larval fish. The effects were restricted to young fish, as a requirement for dietary phospholipids has not been established for adult fish, although this has been virtually unstudied. As the majority of studies have used crude mixed phospholipid preparations, particularly soybean lecithin, but also other plant phospholipids and egg yolk lecithin, that are enriched in several phospholipids, it has been difficult to elucidate which specific phospholipid classes impart beneficial effects. Based on the few studies where single pure phospholipid species have been used, the rank order for efficacy appears to be phosphatidylcholine > phosphatidylinositol > phosphatidylethanolamine > phosphatidylserine. The efficacy of other phospholipid classes or sphingolipids is not known. The mechanism underpinning the role of the phospholipids in larval and early juvenile fish must also explain their lack of effect in adult fish. The role of phospholipids appears to be independent of fatty acid requirements although the presence of an unsaturated fatty acid at the sn-2 position may be important. Similarly, the phospholipid requirement is not related to the delivery of other essential dietary components such as the bases choline and inositol. Studies also suggested that the phospholipid effect was not due to generally enhanced emulsification and digestion of lipids. Rather the evidence led to the hypothesis that early developing stages of fish had impaired ability to transport dietary lipids away from the intestine possibly through limitations in lipoprotein synthesis. The current hypothesis is that the enzymic location of the limitation is actually in phospholipid biosynthesis, perhaps the production of the glycerophosphobase backbone and that dietary supplementation with intact phospholipids in larvae and juvenile fish compensated for this. Thus, dietary phospholipids increase the efficiency of transport of dietary fatty acids and lipids from the gut to the rest of the body possibly through enhanced lipoprotein synthesis.  相似文献   

复方中草药添加剂对鸡蛋胆固醇含量和血清生化指标的影响     

胡忠泽王立克  宋家飞夏元强 《安徽农业技术师范学院学报》2008,22(1):1-4

选择产蛋率和体重相近的39周龄罗曼褐壳蛋鸡300只,随机分成5组,每组设4个重复,每个重复15只鸡。试验期8周。基础日粮作为空白对照组,试验组Ⅰ、Ⅱ、Ⅲ、Ⅳ分别在基础日粮中添加1％的复方中草药添加剂,研究复方中草药对鸡蛋胆固醇含量的影响。结果表明,复方中草药添加剂Ⅰ、Ⅱ、Ⅳ都能显著降低血清甘油三酯（TG）、低密度脂蛋白（LDL）、胆固醇水平和提高高密度脂蛋白（HDL）含量,以及降低鸡蛋胆固醇含量（P〈0．05）,但以复方中草药添加剂Ⅱ效果最佳;与空白对照组相比,添加复方中草药添加剂Ⅱ蛋黄胆固醇浓度降低了21．03％（P〈0．05）,鸡蛋胆固醇含量降低了20．34％（P〈0．05）。  相似文献   

Lipid nutrition of juvenile Litopenaeus vannamei: I. Dietary cholesterol and de-oiled soy lecithin requirements and their interaction     

Hui Gong  Addison L. Lawrence  Dong-Huo Jiang  Frank L. Castille  Delbert M. GatlinIII 《Aquaculture (Amsterdam, Netherlands)》2000,190(3-4):305-324

Two 6-week experiments were conducted in recirculating systems to determine dietary requirements of Litopenaeus vannamei for phospholipids (PL) and cholesterol, and their potential interaction. A 3×4 factorial design consisting of three cholesterol levels (0%, 0.2%, and 0.5% of diet) and four PL levels (0%, 1.5%, 3.0%, and 5.0% of diet) provided by de-oiled soybean lecithin (SL) was applied. Overall survival was 97.7% with no significant difference among dietary treatments. There was a highly significant interaction between PL and cholesterol on shrimp growth (P=0.0001). Dietary cholesterol at 0.2% or 0.5% gave similar shrimp growth at any given level of PL.

In a second factorial experiment, the same four levels of PL were evaluated in conjunction with smaller intervals between dietary cholesterol levels, 0%, 0.05%, 0.1%, 0.2%, and 0.4%, in an attempt to define dietary requirements and interaction better. Overall survival was 99.7%. A highly significant interaction between dietary PL and cholesterol on growth of shrimp was detected again (P=0.0001). The cholesterol requirement was estimated to be 0.35% of diet in the absence of supplemental PL. At 1.5% and 3% PL, dietary cholesterol requirements were reduced to 0.14% and 0.13% of diet, respectively. When PL were provided at 5% of diet, 0.05% dietary cholesterol was needed for optimal growth. Shrimp growth was significantly enhanced as level of PL increased, but as the level of dietary cholesterol level increased, the growth-promoting effect of PL was diminished. Lipid composition of hepatopancreas (mid-gut gland) and muscle tissue of shrimp fed the different diets was also analyzed. Diets supplemented with PL resulted in higher total lipid in hepatopancreas and lower total lipid in muscle of shrimp than those of shrimp fed diets without supplemental PL. Interaction between dietary PL and cholesterol also affected total lipid and triglycerides (TG) in the hepatopancreas, as well as cholesterol concentration in the muscle.  相似文献