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1.
研究了本聚糖酶、β-葡聚糖酶和纤维组成的复合酶制剂对AA商品唯恐从鸡生长和生化参数的影响,结果表明:酶制剂使肉鸡采食量和日增重分别提高4.66%(P〈0.05)和9.79%(P〈0.01)料重比降低4.76(P〈0.01);加酶组肉鸡血清尿酸含量降低36.11%(P〈0.01),胆固与甘油三酯含量分别提高15.90%(P〈0.01)和20.22%(P〈0.05),而GPT和GOT无显著变化(P〉.  相似文献   

2.
肿瘤患者血浆P-sel、LN和NO水平及临床意义   总被引:1,自引:0,他引:1  
目的:观察肿瘤患者血浆P-选择素(P-sel)、层粘连蛋白(LN)和一氧化氮(NO)的水平,并探讨其临床意义。方法:用ELISA法检测169例不同肿瘤患者血浆中P-sel和LN含量,比色法检测NO的含量。结果:除鼻咽癌组LN与正常人间组差异无显著性外,其余各肿瘤组血浆P-sel、LN和NO含量均高于正常对照组(P〈0.05或P〈0.01),且P-sel和LN的升高与NO呈正相关(P〈0.001),  相似文献   

3.
氧化鱼油对鲤肝胰脏抗氧化机能   总被引:5,自引:1,他引:5  
在半纯化饲料中添加质量分数为3%的新鲜鱼油(过氧化物值POV为0.64mmol/kg)和POV分别为29.64、59.40和94.69mmol/kg(以O2计)的氧化鱼油,投喂100g左右2龄鲤(Cyprinus carpio)鱼种15周,结果表明:鲤摄食氧化鱼油后,肝胰脏维生素E含量下降(P〈0.05),抗氧化酶超氧化物歧化酶(SOD)和谷胱甘肽过氧化物酶(GSH-Px)活性减弱(P〉0.05),微粒体氧化稳定性降低(P〈0.05),鱼渔氧化程度升高,上述变化加强;肝胰脏脂肪含量增加(P〉0.05);肾脏和脾脏增生(P〉0.05);肝胰脏肝细胞纤维化、线粒体嵴降解和融合。上述系列变化表明氧化钱油可以破坏鲤肝胰脏抗氧化机能及其正常的组织结构。  相似文献   

4.
中草药活性物质对肉鸡生长及某些生理生化指标的影响   总被引:14,自引:0,他引:14  
以添加0.1%,0.15%由甙,酚等组成的中草药活性物质,与抗生素类添加剂进行肉鸡饲养对比试验,结果表明,添加0.1%组的肉鸡增重,成活率,饲料转化率分别比抗生素组提高5.0%,8.9%,4.9%,42日龄时,0.1%添加组的法氏囊显小于抗生素级(P〈0.05),血清球蛋白含量极显提高(P〈0.01),血钙含量以及血清碱性磷酸酶活性显提高(P〈0.05),血清总蛋白,血红蛋白及血清含量均有所  相似文献   

5.
本研究采用放射免疫法,测定了中国荷斯坦牛泌乳盛,中,后期血清中的T4和T3浓度,结果表明:奶牛泌乳中期和后期血清T4浓度(53.19和64.39nmol/L)分别明显高于盛期(47.64,P〈0.05);T4浓度在泌乳后期和中期之间也存在显著差异(P〈0.05)。T3浓度在整个泌乳期无明显变化(P〉0.05)。奶牛在三个泌乳时期中的日产奶量与T4浓度所占的比率的灰色关联度(0.951,0.968和  相似文献   

6.
本试验应用内蒙古农业大学动物科技学院研制的新型复合菌发酵剂饲喂肉鸡,试验结果表明:添加复合菌发酵剂的试验组与黄霉素及对照组相比分别提高日增重0 .41 % 和6 .08 % ( P> 0 .05) , 提高成活率为1 .72 % 和1 .72 % ( P> 0 .05) ,提高饲料转化率1 .40 % 和8 .23 % 。代谢试验结果表明:在育雏期,各试验组间以及试验组和对照组之间在营养物质吸收上的差异均不显著( P> 0 .05) 。在育成期,各试验组间及试验组与对照组间在粗脂肪、无 N 浸出物利用上差异不显著( P> 0 .05) ;在粗蛋白、 Ga 、 P 的利用上,复合菌发酵剂组与黄霉素组差异不显著( P> 0 .05) ,但显著高于对照组( P< 0 .05) 。  相似文献   

7.
目的:研究肝硬化患者腺垂体分泌细胞的储备功能。方法:用放免法测定10例男性肝硬化患者行药物腺垂体兴奋试验前后的血清PRL、GH、FSH和LH水平。结果:兴奋腺垂体前与健康对照组比较患者血清GH增高(P〈0.05)、FSH降低(P〈0.05)、LH(P〉0.05)和PRL(P〉0.05)与健康对照组比较差异无显著性,兴奋后垂体激素均值明显低于健康对照组(P值分别为,P〈0.01,P〈0.05,P〈0  相似文献   

8.
测定了4种不同类型黄羽鸡品系及其杂交组合的身体结构指数,结果表明,黄羽肉鸡身体结构指数母鸡明显高于公鸡(P〈0.01),矮小型品系明显高于正常体型品系(P〈0.01),在12周龄,正常体型肉用系公鸡与矮小型母鸡杂交后代身体结构指数还显示出显著的杂交组合效应(P〈0.05),轻型正常体型品系杂交后身体结构最优,重型正常体型品系杂交后代较差。  相似文献   

9.
肉鸡和蛋鸡早期发育阶段胰岛素样生长因子水平的比较   总被引:6,自引:4,他引:6  
应用放射免疫分析法,对出雏后5日龄和10日龄的肉鸡和蛋鸡血清中胰岛素样生长因子(IGF-1)水平进行了测定。结果表明:胚后早期发育阶段,蛋鸡的血清IGF-1水平随体重的增加而增加,并且高于肉鸡,尤以10日龄时更为显著(P<0.01)。不同品种相同日龄的雌性雏鸡间差异不显著,但雄性蛋鸡的血清IGF-1水平却显著高于雄性肉鸡(P<0.01);另外,同一品种雏鸡的血清IGF-1水平未见有显著的性别差异(P>0.05)。  相似文献   

10.
饲喂油橄榄饼对肉鸡健康与免疫机能的影响   总被引:1,自引:0,他引:1  
本试验以1日龄AA肉仔鸡288只,用油橄榄饼以等能量,等蛋白分别替代5%、10%的日粮(玉米)饲喂肉鸡49天。结果表明,处亘组与对照组相比,各生长阶段的增重均无显著差异(p>0.05);血浆r──球蛋白与对照组相比,均无显著差异(P>0.05);淋巴细胞除七周龄时处理2显著高于对照组(p<0.05)外,其它与对照组相比,均无显著差异;血浆IgG除七周龄时处理1与对照组间无显著差异外,其它都显著高于对照组(P<0.05),而且,各组鸡均未出现疾病,死亡等异常现象。  相似文献   

11.
Anatomical and physiological observations in monkeys indicate that the primate visual system consists of several separate and independent subdivisions that analyze different aspects of the same retinal image: cells in cortical visual areas 1 and 2 and higher visual areas are segregated into three interdigitating subdivisions that differ in their selectivity for color, stereopsis, movement, and orientation. The pathways selective for form and color seem to be derived mainly from the parvocellular geniculate subdivisions, the depth- and movement-selective components from the magnocellular. At lower levels, in the retina and in the geniculate, cells in these two subdivisions differ in their color selectivity, contrast sensitivity, temporal properties, and spatial resolution. These major differences in the properties of cells at lower levels in each of the subdivisions led to the prediction that different visual functions, such as color, depth, movement, and form perception, should exhibit corresponding differences. Human perceptual experiments are remarkably consistent with these predictions. Moreover, perceptual experiments can be designed to ask which subdivisions of the system are responsible for particular visual abilities, such as figure/ground discrimination or perception of depth from perspective or relative movement--functions that might be difficult to deduce from single-cell response properties.  相似文献   

12.
The primary rocks are a sequence of titanium-rich basic volcanics, composed of clinopyroxene, plagioclase, and ilmenite with minor olivine, troilite, and native iron. The soil and microbreccias are respectively loose and compacted mixtures of fragments and aggregates of similar rocks, minerals, and glassy fragments and spheres. Impact events are reflected by the presence of shock metamorphosed rock fragments, breccias, and glasses and their resulting compaction to form complex breccias, glass-spattered surfaces, and numerous glass-lined craters. Chemistry of the glasses formed by the impact events is highly variable, and the high iron and nickel content of a few moundlike features suggests that at least some of the projectiles are iron and nickel-rich meteorites.  相似文献   

13.
原花青素的性质、功能、纯化和利用   总被引:6,自引:0,他引:6  
原花青素广泛分布于高等植物的多种器官和组织中,是黄烷-3-醇的游离、寡聚或多聚物,存在侧基修饰、异构性质、聚合方式、聚合度等的多样性,可采用多种色谱和质谱技术进行纯化和鉴定。原花青素对于植物具有抗紫外线、清除自由基、抗病驱虫、影响种子休眠等功能,影响作物品质等性状,对人体也具有多种生理功效,在药物、化妆品、食品等领域有良好的应用前景。  相似文献   

14.
通过野外调查、标本采集、分类学研究及资料考证,基本摸清了贵州樟科、莲叶桐科、景天科、堇菜科、柳叶菜科、鹿蹄草科、柿科、山矾科、木犀科等9个科药用植物资源的种类与地理分布.结果发现贵州现有樟科药用植物49种4变种,莲叶桐科药用植物5种,景天科药用植物21种,堇菜科药用植物19种1变种,柳叶菜科药用植物20种4变种,鹿蹄草科药用植物7种1变种,柿科药用植物9种1变种,山矾科药用植物12种,木犀科药用植物30种3变种.其中,4种为贵州特有药用植物,40种5变种为贵州药用新资源.  相似文献   

15.
重金属Pb、Cr、Cd对烟草生长的影响及其分布规律   总被引:1,自引:0,他引:1  
[目的]研究重金属Pb、Cr、Cd对烟草的生理作用及其在烟草中的吸收累积规律.[方法]采用盆栽试验方法,测定烟草根、茎、叶等器官中Pb、Cr、Cd含量,分析不同重金属污染程度下烟草的株高及叶片干物质重的变化.[结果]重金属处理的土壤中烟草的株高都显著低于对照,呈现抑制作用,添加外源Pb和Cr处理下,烟草叶片干重随添加浓度的升高而降低,Cd处理则呈现出先升高后降低的趋势.Pb、Cr、Cd重金属在烟草器官中的含量均为根>茎>叶,根系中Pb、Cr、Cd的浓度与添加浓度具有较好的相关性,而叶片中只有Cd含量与添加浓度具有较好的相关性.[结论]烟草植株中的重金属主要来源于土壤,烟草对重金属的传输过程具有一定的滞阻作用.  相似文献   

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A corn-soybean meal diet (CSB) (or Diet 1) containing 23% crude protein (CP) was used as the positive control, and another corn-soybean meal diet containing 21% CP and 15% wheat middlings (WM) (or Diet 2) was used as the basal diet, which was treated with four different treatments. Digestibility experiment was employed to discuss the collective effect of citric acid, and intrinsic and microbial phytase. By comparing and analyzing effects of them in the low-nutrient broiler diets, the results showed five treatments had similar effects on Tibia ash (%) (mg) (P〉0.05). Under the supplementation of bacterial phytase or citric acid, the daily body weight gain (ADG), gain:feed (G:F) ratio, and calcium (Ca) utilization were similar to that of standard-nutrient CSB diet (Diet 1) (P 〉 0.05). And, fecal phosphorus (P) and CP utilization were lower than (P〈0.05) that of Diet 1. But P utilization was significantly higher than (P〈0.01) that of Diet 1. However, the ADG, G:F, and CP utilization produced by supplementation of intrinsic phytase were lower than those of Diet 1, but other aspects were similar to those produced by Diet 1 (P〉0.05). In Diet 5, citric acid, intrinsic and bacterial phytase were added to the diet, which produced a 1.4% decrease on fecal P, a 7.2% increase on Ca utilization, which was significantly higher than (P〈0.01) those of the other four Diets, a 3.9% increase on G:F, which was similar to that of Diet 1, and a 2.3% increase on CP utilization, which was higher than (P〈0.05) that of the other three diets. In summary, the results of this study indicated that citric acid, intrinsic and bacterial phytase might have some additive or synergistic effects, and low-nutrient CSB diets with 15% wheat middlings, 750 U kg^-1 phytase, and 3% citric acid might substitute completely for standard CSB in broilers.  相似文献   

19.
[目的]研究氮、磷、钾、镁、锌、硼肥对木薯养分吸收及生长的影响.[方法]采用田间试验,设最佳施肥处理OPT(N+P+K+Mg+Zn+B)、减氮施肥OPT-N、减磷施肥OPT-P、减钾施肥OPT-K、减镁施肥OPT-Mg、减锌施肥OPT-Zn、减硼施肥OPT-B处理和不施肥处理,测定各处理木薯产量以及块根、茎、叶养分吸收量和养分吸收强度.[结果]OPT处理木薯所吸收的N、P、K、Zn养分主要累积在茎部,Ca、Mg养分主要累积在叶片和茎部,B养分主要累积在叶片部位中.木薯对N、P、K养分的吸收强度呈抛物线状,在块根膨大期前呈逐渐提高,块根膨大后,木薯对N、P、K养分的吸收强度逐渐下降.增施N、P、K、Mg肥,木薯产量分别提高38.01%、13.09%、23.14%和8.99%;增施1 kgN、P2O5、K2O、MgO木薯产量分别增加101、54、22和49 kg; OPT处理产值最高(13217元/ha).[结论]施肥均可提高木薯的养分吸收量,但K、Za、B肥会抑制Mg的吸收.不同施肥条件对木薯产量有显著的影响.  相似文献   

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