The Influence of Maca (<Emphasis Type="Italic">Lepidium meyenii</Emphasis>) on Antioxidant Status,Lipid and Glucose Metabolism in Rat

This work focused on the effect of maca on lipid, anti-oxidative, and glucose parameters in hereditary hypertriglyceridemic (HHTg) rat. Maca (1%) was administred to rats as a part of a high-sucrose diet (HSD) for 2 weeks. Rosiglitazone (0.02%) was used as a positive control. Maca significantly decreased the levels of VLDL (very low density lipoproteins), LDL (low density lipoproteins), and total cholesterol, and also the level of TAG (triacylglycerols) in the plasma, VLDL, and liver. Maca, as well as rosiglitazone, significantly improved glucose tolerance, as the decrease of AUC (area under the curve) of glucose showed, and lowered levels of glucose in blood. The activity of SOD (superoxide dismutase) in the liver, the GPX (glutathione peroxidase) in the blood, and the level of GSH (glutathione) in liver increased in all cases significantly. Results demonstrate that maca seems to be promising for a positive influence on chronic human diseases (characterized by atherogenous lipoprotein profile, aggravated antioxidative status, and impaired glucose tolerance), and their prevention.     

Susceptibility of clinical isolates of Pseudomonas aeruginosa to antimicrobial agents

One hundred and eighteen isolates of Pseudomonas aeruginosa obtained from clinical material were tested for susceptibility to antimicrobial agents. Regardless of species of animal from which the isolate was obtained, 75% of the isolates were inhibited by ≤ 4 μg of gentamicin/ml, 100% by ≤ 4 μg of tobramycin/ml, 97% by ≤ 128 μg of carbenicillin/ml, and 2% by ≤ 64 μg of chloramphenicol/ml.     

冬虫夏草、寡糖和微生态制剂对肉仔鸡生长性能和免疫功能的影响

将300只1日龄艾维因雏鸡随机平均分成5组,分别饲喂基础日粮、基础日粮 0.2%冬虫夏草菌粉、基础日粮 0.1%寡糖、基础日粮 0.2%微生态制剂、基础日粮 100mg.kg-1金霉素。结果表明:与基础日粮相比各添加剂组均能提高4～6周龄期间肉仔鸡日增重,冬虫夏草组的日增重与基础日粮组差异显著(p<0.05),与金霉素组日增重差异不显著。0～3周龄期间试验组的料重比除微生态制剂组均显著低于基础日粮组(p<0.05)。各组添加剂均可提高肉仔鸡细胞和体液免疫功能,其中寡糖效果显著,作用是提高肉仔鸡在生长前期血清球蛋白含量(p<0.01)。