共查询到19条相似文献，搜索用时 250 毫秒
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《中国畜牧兽医文摘》2016,(1)
对兽医无针注射器的喷射冲击力进行测量,从而得出喷射压力,是兽医无针注射器注射参数测量的一个重要部分。通过选择传感器和数据采集卡等硬件,设计制作夹具工装,设计Lab VIEW数据采集程序,搭建了兽医无针注射器喷射冲击力测试系统。对某兽医无针注射器喷射冲击力进行了实际测试。 相似文献
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《江西畜牧兽医杂志》2017,(3)
<正>传统的有针注射器易损坏,使用时劳动强度大,给猪群注射疫苗过程中容易造成交叉感染。无针注射器是借助高压射流透过皮层将药物注射动物体内,具有药液吸收效果好、防止交叉感染、防止针头断裂、提高肉品质量、减少动物保定、提高注射效率等优点,在畜牧养殖行业中得到越来越多的广 相似文献
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无针注射器作为一种取代传统有针玻璃/金属注射器的新型药物输送方式有悠久的历史，最初无针注射器较多用于注射胰岛素、干扰素、麻醉剂等药物，减少病人的痛苦和交叉感染的机会。1992年美国FDA（食品药品监督管理局）批准无针注射胰岛素。加拿大、美国较早开展兽医无针注射器的研究，据报道美国有近80%的大型养殖场在使用无针注射器，代表性公司有美国的Pulse公司和加拿大的Agro-jet公司。但是进口无针注射器价格昂贵，操作繁琐，使用疫苗类型受限制等一系列的问题也限制了它的推广使用。非洲猪瘟催生了一系列养殖技术的变革，注射疫苗作为猪场生物安全必不可少的防线，减少交叉感染势在必行，无针注射器又提上议事日程。国内已经出现了4～6家国产无针注射器厂家，针对进口无针注射器太重、操作时噪音太大、不能注射油佐剂疫苗等缺点进行了攻关和技术革新。据报道，无针注射胰岛素可以减少30%剂量；默沙东在美国使用IDAL无针注射器免疫圆环-支原体二联苗，只需要0.2 mL每头份；在动物上也发现了类似效果。为了验证动物使用无针注射疫苗的减量效果，本文针对猪圆环灭活疫苗减量免疫仔猪进行了对比研究，对不同剂量仔猪的免疫效果进行了评价，确定了用无针注射器免疫猪圆环灭活疫苗最佳免疫剂量。 相似文献
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1肌肉注射法大家畜及猪、羊等动物注射部位选择臀部和颈侧。犬、猫等小动物选择腰部肌肉,即脊柱两边的肌肉。但注射菌苗和疫苗时,规定的注射部位为后肢肌肉。禽在翅根内侧肌肉、胸部肌肉和腿部肌肉进行注射。大家畜及猪、羊等动物经保定确实后,注射部剪毛、消毒,宠物可将注射部被毛分开后消毒。右手持连接针头的注射器,将针头刺入肌肉内,回抽注射器针拴,针头无回血时,将药液注入肌肉内。 相似文献
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兽医无针注射器研究进展 总被引：1，自引：1，他引：0
概述兽医无针注射器原理及兽医无针注射系统的研究内容,介绍其在兽医领域的主要应用情况及与传统注射器使用情况的效果比较,对进一步开展兽医无针注射器研究,确定产品的关键指标和制定相关行业标准具有一定的指导意义. 相似文献
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《中国畜牧兽医文摘》2012,(1)
设计一种动力装载装置与注射装置分离的无针注射器,供规模猪场应用。该疫苗注射系统对注射深度的影响主要是源于以下几个方面:微孔(喷孔)直径、药物注射剂量、安瓿(活塞)直径、安瓿与微孔内壁的表面粗糙度、冲撞间隙、推动力等。在给定确定参数的情况下,通过实验确定推动力以及冲撞间隙的大小对射流喷射的最大滞止压强的影响,最后根据实验参数设计出一种适用于猪疫苗注射的分体式无针注射系统,并且通过猪活体实验确定其与注射深度之间的关系。 相似文献
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Lateral transmission of blood-borne diseases can occur when a single needle is used repeatedly to vaccinate livestock. Needle-free technology to vaccinate sheep without damaging the carcass, causing lesions, or leaving needle fragments, and eliciting a similar antibody response as traditional needle vaccinations, has been hampered due to variable wool length. Vaccine delivery, injection time, and antibody response were evaluated for a prototype pneumatically powered, needle-free injector and for traditional needle injections. To determine optimal pressure for vaccine delivery with the pneumatic, needle-free injector, two 8-mo-old wethers were injected at pressures from 207 to 414 kPa in increments of 69 kPa. Injection time and antibody responses were evaluated using one hundred 8-mo-old wethers given primary and secondary inoculations of ovalbumin. Serum samples were collected before and after the inoculations on d 0, 14, 28, and 42. Optimal pressure to deliver a s.c. inoculation with the pneumatic, needle-free injector was 207 to 276 pKa. Inoculation of 100 wethers required 60% less time with the pneumatic, needle-free injector than with needle injections when a new needle was used on every animal. Antibody titers were the same (P > 0.12) for the pneumatic, needle-free and the needle injections on d 14, 28, and 42. In addition, antibody titers increased after primary and secondary inoculations, as expected. This study indicated that a pneumatic, needle-free injector can be used to elicit the same antibody response in sheep as a needle injection, and the pneumatic, needle-free injector was faster. The pneumatic, needle-free injector also would be expected to reduce lateral transmission of blood-borne diseases, and will save time, eliminate biohazard waste (e.g., used needles), and eliminate accidental needle sticks for livestock handlers when vaccinating sheep. 相似文献
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The Use of Trypanocides and Antibiotics by Maasai Pastoralists 总被引：1，自引：1，他引：0
Information was collected on the use of veterinary drugs by Maasai pastoralists in an area of Kenya where tsetse flies and trypanosomosis occur. Three herds of cattle were followed for between 4 and 5 years and records were kept of every veterinary drug treatment given by the livestock owners. Almost all treatments were either with the trypanocides homidium or diminazene, or with oxytetracycline by intramuscular injection. The rate of trypanocide use varied between 0.66 and 1.56 treatments per animal per year, while oxytetracycline use was between 0.20 and 1.00 treatments per animal per year. Farmers were injecting these drugs in the absence of veterinary supervision, obtaining their supplies mainly from local village shops or informal traders. Underdosing with trypanocides appeared to be uncommon and the indications were that farmers generally gave the drugs at dosage rates above the recommended standard dose. Accurate information on the dose rates of oxytetracycline could not be obtained, but it was noted that in most cases farmers gave a single injection rather than a course of treatment. In a proportion of cases, trypanocides and antibiotics were mixed together before injection. The farmers administered the drugs when disease was recognized and were rarely using trypanocides as prophylactics. Although necessity forces the livestock owners to obtain and use these drugs without veterinary supervision, there are concerns with regard to the possibility of drug misuse and the development of drug resistance. 相似文献
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Multi-dose vaccinators have been in use for many years to vaccinate livestock. A number of needle-free vaccinators that use compressed gas to drive the vaccine through intact skin have been recently introduced to the market. We recently examined the efficacy of a needle-free vaccinator to induce antibodies to tetanus toxoid in sheep. The result indicates that needle-free vaccination can stimulate antibody responses comparable to conventional needle vaccination. 相似文献
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MARIANO MAKARA MATTHIAS DENNLER KAROLIN KÜHN KARIN KALCHOFNER PATRICK KIRCHER 《Veterinary radiology & ultrasound》2011,52(6):605-610
Our goal was to investigate the effect of contrast medium injection duration on pulmonary artery peak enhancement and time to peak enhancement. Fourteen dogs were allocated into one of seven predefined weight categories, each category contained two dogs. Dogs in each weight category were assigned to group A or B. Animals in each group received a different contrast medium injection protocol. In group A, a fixed injection rate of 5 ml/s was used. In group B, the contrast injection rate was calculated as follows: flow rate=contrast volume/scan duration+10 s. Time to peak enhancement and peak enhancement of the main left and right pulmonary arteries were measured on single‐level, dynamic CT images for a fixed time of 30 s. Rank correlation (Spearman's) coefficients between injection duration and time to peak enhancement and between body weight and peak enhancement were calculated. For group A, there was a significant negative correlation between peak enhancement and weight (r=?0.94; P=0.005), while for group B, there was no significant correlation (r=?0.64 and P=0.18). There was a significant correlation between time to peak enhancement and injection duration in both groups (group A: r=0.99; P=0.006 and group B: r=0.85; P=0.02). In conclusion, injection duration is a key feature in a CT angiography injection protocol. A protocol with an injection duration adjusted to the scan duration seems to be particularly suitable for veterinary applications where a population with great weight variability is studied. 相似文献
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Michel Rey Juan Rodriguez-Lecompte Michael Undi Tomy Joseph Jason Morrison Alex Yitbarek Karin Wittenberg Robert Tremblay Gary Crow Kim Ominski 《The Canadian veterinary journal. La revue veterinaire canadienne》2015,56(4):405-407
This study compared needle-free and needle-based injection devices for vaccination of calves against Clostridium chauvoei in warm and cold conditions. Both devices elicited comparable antibody responses in calves. Needle-free injection devices can be used to vaccinate calves provided appropriate precautions are taken in cold weather. 相似文献