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1.
采用HPLC建立了兽药维生素ADE注射液中维生素A、维生素D3和维生素E的含量检测。采用C18色谱柱(150 mm×4.6 mm,5μm),甲醇为流动相A、乙腈-乙醇-水(60∶25∶5)为流动相B进行梯度洗脱,流速为1.5 m L/min,检测波长为265 nm,柱温为25℃,进样量为20μL。结果表明,在此色谱条件下,维生素ADE注射液中维生素A、维生素D3和维生素E的分离度良好,分别在60.96~1219.20μg/m L、2.56~51.20μg/m L和300.23~6004.60μg/m L范围内线性关系良好(r20.999)。按外标法以峰面积计算进行检测,维生素A、维生素D3和维生素E的平均回收率分别为99.6%、101.1%和99.0%,RSD均小于1.0%;平均重复性分别为105.7%、106.8%和102.3%,RSD均小于1.0%;中间精密度的RSD均小于0.5%;稳定性的RSD均小于1.0%;耐用性中选择流动相A与B变化为17∶83、流速为1.5 m L/min时,在一定范围内三种组分的含量基本稳定;柱温为25℃时,可避免维生素降解。说明该方法简单、快速,适用于维生素ADE注射液中三种维生素含量的测定,具有分离效果好、回收率高和稳定性好的特点。  相似文献   

2.
为进一步研究阿旺绵羊在高原环境下生长的羊肉品质,结合西藏本地其他类群羊肉进行对比研究。经现场和实验室对肉品质进行测定,并与多玛绵羊羊肉品质进行了肉质常规营养和氨基酸含量分析对比。结果表明,阿旺绵羊羊肉中的8种必需氨基酸总体含量都比较高,总氨基酸含量为20.68 g/100 g,其中,必需氨基酸总量为8.75 g/100 g,占氨基酸总量的42.31%,非必需氨基酸总量为11.93 g/100 g,占氨基酸总量的57.69%,阿旺绵羊羊肉中的蛋白质含量平均为22.01%,胆固醇含量为每100 g肉中含30.81 mg,阿旺绵羊羊肉中水分含量达到73.03%,阿旺绵羊羊肉中的脂肪含量平均为3.19 g/100 g,且矿物质含量丰富。  相似文献   

3.
建立测定盐酸环丙沙星注射液中盐酸环丙沙星含量的高效液相色谱检测方法。色谱柱为Gemini C18110A(250 mm×4.60 mm,5μm),流动相为0.025 mol/L磷酸溶液(用三乙胺调pH至3.0±0.1)-乙腈(75∶25),检测波长277 nm,流速1.0 mL/min,进样量10μL。在12.5μg/mL~200μg/mL浓度范围内,盐酸环丙沙星的峰面积与浓度呈良好的线性关系,相关系数为0.999 4(n=5),平均回收率为99.58%。该方法简便、准确、灵敏,可用于测定盐酸环丙沙星注射液的含量。  相似文献   

4.
高效液相色谱法测定维生素E粉含量   总被引：1，自引：0，他引：1  
用高效液相色谱法测定饲料添加剂维生素E粉中维生素E含量。采用EclipseXDBC18柱(150mm×4.6mm,5μm),以甲醇-水(98∶2,V∶V)为流动相,流速为1.2mL/min,检测波长为285nm,柱温为25℃。在此色谱条件下,维生素E在0.104￣0.602mg/mL浓度范围内呈良好线性关系,r=0.9998,平均回收率为100.3%,RSD为0.72%。本法操作简便易行,系统适用性良好,适用于饲料添加剂维生素E粉中维生素E含量测定。  相似文献   

5.
采用HPLC建立了兽药维生素ADE注射液中苯甲醇的含量检测。用C18色谱柱(150 mm×4.6 mm,5μm),甲醇为流动相A、水为流动相B进行梯度洗脱,流速为1.0 mL/min,柱温为25℃,检测波长为257 nm,进样量为20μL。结果表明,在此色谱条件下,维生素ADE注射液中苯甲醇在0.010 4～0.103 9 mg/mL范围内线性关系良好(r2=0.999 9)。按外标法以峰面积计算进行检测,苯甲醇的平均回收率为100.3%,RSD小于1.0%;平均重复性为1.88%,RSD小于1.0%;中间精密度的RSD小于1.0%;稳定性的RSD小于0.5%;耐用性中选择柱温为25～35℃、流速为0.8～1.2 mL/min时,苯甲醇的含量基本稳定。该方法简单、快速,适用于维生素ADE注射液中苯甲醇含量的测定,具有回收率高和稳定性好的特点。  相似文献   

6.
建立碱性蛋白酶-高效液相色谱法测定复合维生素溶液中维生素A的含量。利用碱性蛋白酶的方法处理样品,并采用EcoSic HPLC Coumw-ODS,C18柱(4.6mm×200mm,5μm)分离,检测波长为326nm,流动相为甲醇+水(95+5)等高效液相色谱条件检测样品中维生素A的含量。结果显示,样品中维生素A与其他组分分离良好,维生素A浓度在120～600IU/ml范围内线性关系良好(r=0.9997),平均回收率在99.9%(n=5),RSD为1.0%。本方法简便、快捷,结果准确、可靠、重现性好,可作为企业控制生产过程中复合维生素溶液质量的方法之一。  相似文献   

7.
试验对全舍饲条件下6月龄和12月龄云南黑山羊背最长肌的常规营养成分和氨基酸、脂肪酸含量进行了测定分析。结果表明:(1)云南黑山羊6月龄羔羊肉的水分、粗脂肪、粗蛋白和粗灰分分别为75.07%、2.03%、21.53%和1.06%;12月龄羊肉的水分、粗脂肪、粗蛋白和粗灰分分别为75.40%、0.97%、21.03%和1.00%。(2)6月龄羔羊肉和12月龄羊肉均含有丰富的矿物质和维生素,胆固醇含量低。(3)6月龄羔羊肉和12月龄羊肉氨基酸种类含量丰富,17种氨基酸总含量分别为17.11 g/100 g和16.93 g/100 g,鲜味氨基酸分别占总氨基酸含量的45.00%和45.30%。(4)各脂肪酸含量的总体趋势表现出6月龄高于12月龄,且多数脂肪酸含量在两个月龄间达到了显著(P0.05)或极显著差异水平(P0.01);6月龄羔羊肉和12月龄羊肉主要组成脂肪酸为棕榈酸、硬脂酸、反式油酸和亚油酸,分别占脂肪酸总量的76.41%和73.43%;6月龄羔羊肉中富含亚油酸,含量为1 200.50 mg/kg;6月龄羔羊肉和12月龄周岁羊肉中含有3种支链脂肪酸,分别为8.66 mg/kg和6.28 mg/kg。  相似文献   

8.
天然维生素E因具有促进动物生长、提高肉品质等功能,已被逐步用于宠物及畜禽饲养,但行业中尚无规范该类饲料及饲料添加剂产品的标准及检测方法。本研究旨在建立采用正相液相色谱-紫外检测器(NPLC-UV)测定饲料添加剂中8种天然维生素E含量的分析方法。样品经甲醇浸润后,以乙酸乙酯/正己烷(3∶97,V/V)为提取溶剂在室温下进行超声浸提。使用Kromasil 60-5 diol(4.6 mm×150 mm)色谱柱进行分离,正庚烷/四氢呋喃(100∶4,V/V)等度洗脱,流速1.0 mL/min,柱温40℃,紫外检测波长为292 nm。结果表明:生育酚和生育三烯酚含量在0.2～50.0μg/mL时线性关系良好(R2≥0.999 0),方法定量限为0.01%,加样平均回收率为81.3%～109.8%,相对标准偏差(RSD)小于7.9%。通过对实际样品测定,该方法操作简单,结果准确可靠,有助于规范天然维生素E饲料产品市场。  相似文献   

9.
建立补血催乳口服液的定性与定量检测方法,并制定质量标准。对补血催乳口服液中黄芪、当归、穿山甲采用TLC定性鉴别;黄芪甲苷与丹参酮ⅡA含量用HPLC法检测,色谱柱均为Agilent Extend C_(18)(4.6 mm×250 mm,5μm),进样量10μL;测定黄芪甲苷的流动相为乙腈-水(36∶64),柱温为30℃;流速1.0 mL/min,ELSD检测器,漂移管温度为100℃,气流速度为1.7 L/min。测定丹参酮ⅡA的流动相为甲醇-水(75∶25),流速为1.0 mL/min,柱温为35℃,检测波长为270 nm。结果显示所建立TLC法斑点清晰,分离效果好,阴性无干扰;黄芪甲苷在0.107 1～3.213μg范围内呈良好的线性关系,平均加样回收率为98.03%,RSD为1.19%。丹参酮ⅡA在0.018 1～0.453 5μg范围内线性关系良好,平均加样回收率为100.51%,RSD为1.22%。说明本研究方法简单易行,专属,准确,可用于补血催乳口服液质量控制。  相似文献   

10.
建立梯度洗脱HPLC法同时测定4种解热镇痛类药物的含量方法。采用十八烷基硅烷键合硅胶色谱柱(4.6 mm×250 mm,5μm),以甲醇-0.05 mol/L醋酸铵溶液为流动相进行梯度洗脱,流速1.0 mL/min,柱温为30℃,检测波长254 nm。结果表明,在该色谱条件下,对乙酰氨基酚、安乃近、安替比林、氨基比林分离良好;对乙酰氨基酚在50～500μg/mL范围内线性良好,R=0.999 8,平均回收率为99.2%(n=9),RSD为0.6%;安乃近在10～250μg/mL范围内线性良好,R=0.999 8,平均回收率为100.6%(n=9),RSD为0.8%;安替比林在10～100μg/mL范围内线性良好,R=0.999 6,平均回收率为99.4%(n=9),RSD为1.0%;氨基比林在10～250μg/mL范围内线性良好,R=0.999 7,平均回收率为98.9%(n=9),RSD为0.8%。本测定方法操作简便,结果准确、可靠,可用于同时测定以上4种解热镇痛类药物的含量。  相似文献   

11.
试验选用96头平均体重14.82 kg左右的杜×长×大断奶仔猪,随机分成4组,每组3栏,每栏8头(公母各半)。对照组饲喂基础日粮,试验1、2、3组分别添加1%80目白术、0.2%白术多糖和1%微米白术。试验期30 d。结果表明:在生长性能方面,与对照组相比,1%微米白术添加组可显著提高日增重(P0.05)、降低饲料增重比和腹泻率,而且效果优于1%80目白术组和0.2%白术多糖组,在肠道形态和肠道微生态区系方面,与对照组相比,日粮添加1%80目白术、0.2%白术多糖、1%微米白术均可不同程度的提高十二指肠和空肠的绒毛高度,加深十二指肠和空肠的隐窝深度,并且增加肠道微生态区系的多样性,其中以1%微米白术添加组的效果最佳。  相似文献   

12.
Sissay, M.M., Uggla, A. and Waller, P.J., XXXX. Prevalence and seasonal incidence of nematode parasites and fluke infections of sheep and goats in eastern Ethiopia. Tropical Animal Health and Production, XXXX. A 2-year abattoir survey was carried out to determine the prevalence, abundance and seasonal incidence of gastro-intestinal (GI) nematodes and trematodes (flukes) of sheep and goats in the semi-arid zone of eastern Ethiopia. During May 2003 to April 2005, viscera including liver, lungs and GI tracts were collected from 655 sheep and 632 goats slaughtered at 4 abattoirs located in the towns of Haramaya, Harar, Dire Dawa and Jijiga in eastern Ethiopia. All animals were raised in the farming areas located within the community boundaries for each town. Collected materials were transported within 24 h to the parasitology laboratory of Haramaya University for immediate processing. Thirteen species belonging to 9 genera of GI nematodes (Haemonchus contortus, Trichostrongylus axei, T. colubriformis, T. vitrinus, Nematodirus filicollis, N. spathiger, Oesophagostomum columbianum, O. venulosum, Strongyloides papillosus, Bunostomum trigonocephalum, Trichuris ovis, Cooperia curticei and Chabertia ovina), and 4 species belonging to 3 genera of trematodes (Fasciola hepatica, F. gigantica, Paramphistomum {Calicohoron} microbothrium and Dicrocoelium dendriticum) were recorded in both sheep and goats. All animals in this investigation were infected with multiple species to varying degrees. The mean burdens of adult nematodes were generally moderate in both sheep and goats and showed patterns of seasonal abundance that corresponded with the bi-modal annual rainfall pattern, with highest burdens around the middle of the rainy season. In both sheep and goats there were significant differences in the mean worm burdens and abundance of the different nematode species between the four geographic locations, with worm burdens in the Haramaya and Harar areas greater than those observed in the Dire Dawa and Jijiga locations. Similar seasonal variations were also observed in the prevalence of flukes. But there were no significant differences in the prevalence of each fluke species between the four locations. Overall, the results showed that Haemonchus, Trichostrongylus, Nematodirus, Oesophagostomum, Fasciola and Paramphistomum species were the most abundant helminth parasites of sheep and goats in eastern Ethiopia.  相似文献   

13.
Tropical Animal Health and Production -  相似文献   

14.
1-(2-Chloroethyl)3-cyclohexyl-1-nitrosourea (CCNU) is an alkylating agent in the nitrosourea subclass. A prospective evaluation of CCNU was done to determine the maximally tolerated dosage of CCNU in tumor-bearing cats. Response data were obtained when available. Twenty-five cats were treated with CCNU at a dosage of 50-60 mg/m3 body surface area. Complete hematologic data were available for 13 cats. Neutropenia was the acute dose-limiting toxicity. The median neutrophil count at the nadir was 1,000 cells/microL (mean, 2,433 cells/microL; range, 0-9,694 cells/microL). The time of neutrophil nadir was variable, occurring 7-28 days after treatment, and counts sometimes did not return to normal for up to 14 days after the nadir. Based on these findings, a 6-week dosing interval and weekly hematologic monitoring after the 1st treatment with CCNU are recommended. The nadir of the platelet count may occur 14-21 days after treatment. The median platelet count at the nadir was 43,500 cells/microL. No gastrointestinal, renal, or hepatic toxicities were observed after a single CCNU treatment, and additional studies to evaluate the potential for cumulative toxicity should be performed. Five cats with lymphoma and 1 cat with mast cell tumor had measurable responses to CCNU. Phase II studies to evaluate antitumor activity should be completed with a dosing regimen of 50-60 mg/m3 every 6 weeks.  相似文献   

15.
Our particular attention in this article was given to natural mediators for macrophages isolated from the sites of tissue injury. A number of chemotactic factors, which may satisfy many criteria making them acceptable as inflammatory leucocyte chemotactic factors, has been separated. Among them, our laboratory has isolated three macrophage (monocyte) chemotactic factors (MCF-a, -b and -c). Their purification, characterization and functional specificity are discussed.  相似文献   

16.
Human and equine athletes are reported to have a high prevalence of gastric disease, and anecdotal evidence suggests a similar phenomenon applies to racing sled dogs. To investigate the prevalence of gastric disease in racing sled dogs, we conducted 2 gastroscopy studies on dogs competing in the annual Iditarod Sled Dog Race. A pilot study of dogs that were either dropped from the 2000 Iditarod Sled Dog Race because of illness or that finished the race indicated that, approximately 5 days after competing, 10 of 28 dogs (35%) had endoscopic evidence of gastric ulceration, erosion, or hemorrhage. The next year, an endoscopic study of 73 dogs participating in the 2001 Iditarod race was performed in order to evaluate a larger population of dogs. Data from 70 of these dogs could be used; 34 (48.5%) had ulceration, erosion, gastric hemorrhage, or some combination of these findings. When this group of 70 dogs was compared retrospectively to a control group of 87 dogs presented to the Texas A&M University (TAMU) Veterinary Medical Teaching Hospital, the Iditarod sled dogs had a significantly higher prevalence (P = .049) of gastric lesions. These findings suggest that, similar to athletes of other species, elite canine athletes have an increased prevalence of gastric disease compared to the canine population at large.  相似文献   

17.
Continuous rate infusion (CRI) of furosemide in humans is considered superior to intermittent administration (IA). This study examined whether furosemide CRI, compared with IA, would increase diuretic efficacy with decreased fluid and electrolyte fluctuations and activation of the renin-angiotensin-aldosterone system (RAAS) in the horse. Five mares were used in a crossover-design study. During a 24-hour period, each horse received a total of 3 mg/kg furosemide by either CRI (0.12 mg/kg/h preceded by a loading dose of 0.12 mg/kg IV) or IA (1 mg/kg IV q8h). There was not a statistically significant difference in urine volume over 24 hours between methods; however, urine volume was significantly greater after CRI compared with IA during the first 8 hours ([median 25th percentile, 75th percentile]: 9.6 L [8.9, 14.4] for CRI versus 5.9 L [5.3, 6.0] for IA). CRI produced a more uniform urine flow, decreased fluctuations in plasma volume, and suppressed renal concentrating ability throughout the infusion period. Potassium, Ca, and Cl excretion was greater during CRI than IA (1,133 mmol [1.110, 1,229] versus 764 mmol [709, 904], 102.7 mmol [96.0, 117.2] versus 73.3 mmol [65.0, 73.5], and 1,776 mmol [1,657, 2.378] versus 1,596 mmol [1,457, 1,767], respectively). Elimination half-lives of furosemide were 1.35 and 0.47 hours for CRI and IA, respectively. The area under the excretion rate curve was 1,285.7 and 184.2 mL x mg/mL for CRI and IA, respectively. Furosemide CRI (0.12 mg/kg/h) for 8 hours, preceded by a loading dose (0.12 mg/kg), is recommended when profound diuresis is needed acutely in horses.  相似文献   

18.
Genetic variations in chromosome Y are enabling researchers to identify paternal lineages, which are informative for introgressions and migrations. In this study, the male‐specific region markers, sex‐determining region‐Y (SRY), amelogenin (AMELY) and zinc finger (ZFY) were analysed in seven Turkish native goat breeds, Angora, Kilis, Hair, Honaml?, Norduz, Gürcü and Abaza. A SNP in the ZFY gene defined a new haplotype Y2C. All domestic haplogroups originate from Capra aegagrus, while the finding of Y1A, Y1B, Y2A and Y2C in 32, 4, 126 and 2 Turkish domestic goats, respectively, appears to indicate a predomestic origin of the major haplotypes. The occurrence of four haplotypes in the Hair goat and, in contrast, a frequency of 96% of Y1A in the Kilis breed illustrate that Y‐chromosomal variants have a more breed‐dependent distribution than mitochondrial or autosomal DNA. This probably reflects male founder effects, but a role in adaptation cannot be excluded.  相似文献   

19.
The objective of this report was to characterize 20-year changes in proportion of calcium oxalate (CaOx) calculi and struvite calculi in dogs, and associations with breed, age, and sex. In this retrospective study, results of analysis of urinary calculi from dogs were reviewed for specimens received between July 1, 1981, and December 31, 2001. Breed, sex, age, year of submission of the specimen, and mineral type(s) were analyzed statistically. CaOx or Struvite or both were contained in 18,966 of 20,884 (91%) specimens. For both sexes, a 20-year statistically significant increase was observed in the proportion of calculus specimens that contained CaOx. The increase in this proportion was greater in females (1% to 31%) than in males (18% to 82%). From 1998 to 2001, when proportions may have plateaued, the odds of specimens containing CaOx were markedly higher in 18 breeds, markedly lower in 5 breeds, and not significantly different in 13 breeds compared with crossbreds. For both sexes, a 20-year statistically significant decrease was observed in the proportion of calculus specimens that contained struvite. This decrease in proportion was greater for males (79-16%) than for females (97-68%). From 1998 to 2001, when proportions plateaued, the odds of calculi containing struvite were markedly lower in 20 breeds, markedly higher in 1 breed, and not significantly different in 15 breeds when compared with crossbreds. Breed, age, and sex were associated statistically with CaOx or struvite urolithiasis. In conclusion, there appears to have been a long-term increase in the proportion of specimens of canine urinary calculi that contain CaOx as well as a long-term decrease in the proportion of specimens of calculi that contain struvite for both male and female dogs. The rate of change appeared to begin leveling off in the period 1998 to 2001. The recent proportion of dogs with either CaOx- or struvite-associated urolithiasis may depend on breed, age, and sex, and on interactions among these 3 factors.  相似文献   

20.
<正>1.INTRODUCTION Ensuring transportation network security is one Of the most daunting challenges confronting homeland security agencies today.Significant research has been dedicated.To model and analyze the vulnerability of transportation systems,while notably fewer studies propose specific strategies for deploying defensive technologies to safeguard these systems.  相似文献   

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