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11.
猪牛羊可食性组织中阿苯达唑残留检测方法研究 总被引：8，自引：0，他引：8
建立了动物可食性组织中阿苯达唑及其主要代谢物亚砜和砜残留检测的高效液相色谱(HPLC)法。组织中3种残留物分别用乙醚、乙腈和正己烷提取和净化,氮气吹干,甲醇溶解,HPLC测定,内标法定量。该方法可检出猪、牛、羊肌肉、肝脏、肾脏组织中阿苯达唑、砜和亚砜的最低限量均为16.6 μg·kg-1,在16.6μg·kg-1浓度时,动物组织中阿苯达唑、砜和亚砜的平均回收率分别为7 5％～99％、8 0％～9 0％和61％～91％,日间变异系数均小于20％。用所建方法,对市场上动物可食性组织进行抽样检测,共抽检5 4份样 相似文献
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Bártíková H Vokřál I Forstová-Křížová V Skálová L Lamka J Szotáková B 《Veterinary parasitology》2011,176(1):27-33
Albendazole (ABZ) is one of the most important benzimidazole compounds possessing high activity against the lancet fluke, Dicrocoelium dendriticum. ABZ sulphoxide (ABZ.SO) is the main molecule present in the bloodstream of an ABZ-treated host. The aim of this study was to characterise the pattern of ex vivo uptake of ABZ and ABZ.SO by lancet flukes and the export of both anthelmintics from these parasites. Transport of these anthelmintics in both living and dead flukes was compared. The adult flukes were collected from mouflons (Ovis musimon) which had been infected naturally. Results showed that more lipophilic ABZ was imported to a higher extent than ABZ.SO, and that significantly higher concentrations of ABZ were detected within living flukes as compared to dead ones. The same pattern was revealed in the study of ABZ and ABZ.SO export from the flukes' bodies. In addition to passive diffusion, active ABZ uptake and active efflux of ABZ and ABZ.SO in D. dendriticum could be assumed. 相似文献
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为了探讨复方伊维菌素乳液在动物体内的药物代谢,为兽医临床提供用药参考。试验选取7只山羊,每只山羊按0.1 mL/kg (伊维菌素0.2 mg/kg, 阿苯达唑10 mg/kg)剂量口服,给药后0.5、1、2、3、4、6、8、12、16、24、36、48、60 h颈静脉采血5 mL,分离血清,-20 ℃保存,用高效液相色谱仪检测样品血药浓度。试验结果表明,①伊维菌素在山羊体内的代谢情况为：0.5 h,0.112151 μg/mL; 第1次达峰时间为4 h, 0.302702 μg/mL;第2次达峰时间为16 h,0.258284 μg/mL;60 h,0.011118 μg/mL。②阿苯达唑在山羊体内的代谢情况为：0.5 h, 0.049285 μg/mL;第1次达峰时间为8 h,4.95283 μg/mL ;第2次达峰时间为16 h,5.694551 μg/mL;60 h,0.06434 μg/mL。复方伊维菌素中的伊维菌素和阿苯达唑在山羊体内代谢时间短,第60小时已达到很低的血药浓度。 相似文献
14.
测定丙硫唑和溴菌腈对芒果细菌性角斑病菌（Xanthomonas campestris pv. Mangiferaeindicae）的联合毒力及其田间防治效果。结果表明,丙硫唑与溴菌腈对芒果细菌性角斑病菌EC50值分别为2.869 μg/mL和0.206 μg/mL,当质量比为1:2混配时毒力增效作用最明显,增效系数为1.595,其EC50值为0.187 μg/mL;二者以75 g/hm2与150 g/hm2（有效成分质量比1:2）进行田间桶混处理15 d,防效达80%以上,显著高于单剂防效。 相似文献
15.
早期诊断与治疗猪囊虫病试验 总被引：1，自引：0，他引：1
为探索早期诊断与治疗猪囊虫病的有效方法，采用ＥＬＩＳＡ诊断大通地区的猪血样１３８２头份，并对其中的７７头进行了剖检验证，还用丙硫咪唑治疗已确诊患囊虫病的猪５８头。试验结果：用ＥＬＩＳＡ检出猪囊虫阳性率为８．０３％；ＥＬＩＳＡ血检与剖检结果的阳性符合率为９２．３％，阴性符合率为９５．３％，总体符合率为９４．８％；丙硫咪唑对猪囊虫的杀灭率为９８．７％，治愈率为９３．７％，经治疗后让机体自身修复７—９个月时，达到鲜销标准的猪为７２．８％—９０．９％。 相似文献
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Three on-farm studies were conducted in Nicaragua during three consecutive years (1999–2001) to assess the impact of natural helminth infections on growth performance of free-range chickens aged 3–4 months. On all participating farms, half of the chickens were treated regularly with anthelmintics (Trifén avícola – a combined formulation of piperazine, phenothiazine and dichlorophen – or albendazole) to express the growth potential of non-infected birds, whereas the other half served as non-treated controls. In 1999, treated chickens had a 39% higher weight gain compared to the control group 6 weeks after the first treatment on 15 farms. In 2000 and 2001, treated chickens had similar weight gain as the control group 10 weeks after the first treatment on 7 farms and 12 farms, respectively. The main reason for the very-different weight gain figures seems to be the weather conditions. In 1999, the study site experienced a rainy season with precipitation far above average, whereas in 2000 and 2001 the rainy seasons had precipitations far below average. Based on these findings, routine use of anthelmintics in the study area would only be recommended in wet years when production losses due to helminth infections seem to be pronounced.
In 2001, the study set-up included an assessment of the effect of protein supplementation (soybean) on growth on six farms. Supplemented chickens (treated and non-treated with anthelmintics) had 17% higher weight gain than non-supplemented. Protein supplementation affected neither worm burdens nor faecal egg counts for any of the studied helminths.
The post-mortem examinations showed that Trifén reduced burdens of Ascaridia galli, Heterakis gallinarum, and cestodes (efficacies of 100, 100 and 67%, respectively). Albendazole reduced burdens of H. gallinarum (efficacy of 100%). Efficacies against other helminths were difficult to assess due to low worm burdens. Chickens treated with albendazole had lower Ascaridia and Heterakis faecal egg counts than non-treated chickens. 相似文献
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Pharmacokinetics of albendazole sulfoxide enantiomers administered in racemic form and separately in rats 总被引：1，自引：1，他引：0
Capece BP Castells G Godoy C Arboix M Cristòfol C 《Veterinary journal (London, England : 1997)》2008,177(2):297-299
The pharmacokinetic behaviour of albendazole sulfoxide (ABZSO) enantiomers was studied in rats after the oral administration of 10 mg/kg of rac-ABZSO, 5 mg/kg of (-)-ABZSO or 5 mg/kg of (+)-ABZSO. The disposition profiles of ABZSO enantiomers were similar in all treatments, but the calculated area under the curve for the (-)-ABZSO was higher in all cases compared with (+)-ABZSO. The results suggest that there is no chiral inversion of ABZSO enantiomers. After the administration of rac-ABZSO, 17.2% of the total dose was recovered in urine as albendazole ABZ (0.1%), albendazole sulfone ABZSO(2) (0.3%), albendazole 2-aminosulfone (ABZ-SO(2)NH(2)) (3.1%) and ABZSO (13.7%). The ratio (+) to (-) was similar in urine (1.6) and blood (1.7). 相似文献
19.
P.K. Sanyal 《Veterinary journal (London, England : 1997)》1998,155(3):311-316
The pharmacokinetics of albendazole were studied in sheep and goats following single and divided doseadministration at nematocidal and flukicidal dose rates. The disposition curves of the metabolites indicated increased uptake of the drug both in sheep and goats at divided dose schedules compared to single dose administration (P<0.05). The increased bioavailability of benzimidazole anthelmintics in divided dose schedules could improve their efficacy and help in extending their lives. 相似文献
20.
用虫卵孵化试验对江苏某羊场线虫抗药性的检测 总被引：4，自引：0，他引：4
用虫卵孵化试验对江苏某羊场线虫抗药性进行了检测，测得其虫卵孵化半数抑制量ＥＤ５０为０．０６３３μｇ／ｍＬ丙硫苯咪唑，是敏感株（０．００２６μｇ／ｍＬ丙硫苯咪唑）的２０余倍。该方法操作方便、快速、结果客观、敏感，可以用于检测虫株抗药性的发生和抗药性动态变化规律分析，为寄生虫病防止抗药性提供有效依据。 相似文献