共查询到19条相似文献，搜索用时 171 毫秒
1.
祁生武 《青海畜牧兽医杂志》2012,42(4):14-15
2009年10月中旬采用阿维菌素泼背剂对574头牦牛,分为两组进行牛皮蝇蛆防治试验,并于2010年4月进行了防治效果考核,结果显示:试验组牦牛感染率为零,防治效果达100%;对照组119头牦牛中感染92头,感染率77.31%,平均感染强度10.89个瘤疱。 相似文献
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采用解剖法检查体内寄生的皮蝇1期幼虫和触摸法检查牦牛背部皮蝇幼虫寄生形成的皮下瘤疱及成熟3期幼虫脱落形成的皮肤虫孔的方法,进行牦牛皮蝇幼虫感染情况调查,对成熟3期幼虫进行形态学鉴定。结果显示:在当年未用药的牦牛群中,剖杀检查牦牛皮蝇幼虫感染率在24.62%～74.63%,平均感染率为40.40%,平均感染强度30.07条,感染范围7～63条。临床摸背检查皮蝇期幼虫感染率在26.54%～75.22%,平均感染率为44.07%,平均感染强度6.11个,感染范围1～17个。1～3岁的幼年牦牛感染严重。调查地区牦牛皮蝇蛆病的病原虫种有中华皮蝇蛆、纹皮蝇蛆和牛皮蝇蛆,其比例分别为82.35%、11.77%和5.88%。 相似文献
3.
2008年10月中旬采用阿维菌素泼背剂对462头牦牛,分为两组进行牛皮蝇蛆病防治试验,并于2009年4月进行了防治效果考核,结果显示:试验组牦牛感染率为零,防治效果达100%;对照组166头牦牛中感染97头,感染率58.43%.平均感染强度6.70个瘤疱. 相似文献
4.
在青藏高原上取直线距离720公里的两个点,每月下旬剖检放牧幼年牦牛,连续一年共剖检132头,用斯氏法和水浴法分别检查胎生网尾线虫(Dictyocaulus viviparus)成虫和寄生阶段幼虫荷量。两点同步观察结果表明:成虫高潮期在5—7月(或3—7月),5月份为全年高峰;9月到翌年4月寄生阶段幼虫荷量高;在牦牛体内,9月到翌年4月(或2月)寄生阶段幼虫占绝对优势,而5—8月(或3—8月)成虫却占绝对优势。本文还就两点研究结果的异同,幼虫发育受阻现象和主要感染季节以及防治对策作了讨论。 相似文献
5.
多杰 《青海畜牧兽医杂志》2014,(3):7-7
用0.5mL剂量伊维菌素注射剂对幼年牦牛和成年牦牛在11月份注射驱除牛皮蝇蛆,结果,幼年组牦牛实验结果,注射组感染率17.62%,瘤疱数67个,平均强度0.29%;未注射组感染率55.26%,瘤疱数196个,平均强度1.72%;感染率未注射组比注射组高37.64%,瘤疱数多129个,平均强度高1.43%。成年组牦牛实验结果,注射组感染率23.8%,瘤疱数15个,平均强度0.36%;未注射组感染率39.39%,瘤疱数32个,平均强度0.97%;感染率未注射组比注射组高15.59%,瘤疱数多17个,平均强度高0.61%。 相似文献
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冬季是幼虫寄生高潮期,冬季适时驱杀寄生阶段幼虫,可以预防春季的成虫高潮,减少牲畜的死亡。为了验证此项技术措施的可行性和大面积推广的经济效益,我们于1991年1月15—19日在贵南县森多乡对10105头幼年牦牛用丙硫咪唑进行了冬季驱虫推广试验。材料和方法 1.试验动物:以森多乡9个村的1、2岁牦牛10105头为试验组,投药。以该乡7个村的1、2岁牦牛4036头为对照 相似文献
7.
田丽 《青海畜牧兽医杂志》1992,(2)
由青海省畜牧兽医科学院兽医所、畜牧所分别承担的“幼年牦牛寄生线虫吸虫动态及防治研究”和“珍贵皮毛动物兰狐、貉等引种试养研究”两项课题,于1992年1月20日和1月29日由青海省畜牧厅组织通过鉴定。“幼年牦牛寄生线虫吸虫动态及防治研究”课题,是青海省科委1987年下达的科研项目。该课题组经5年努力,通过对牦牛寄生虫病的危害调查,虫种分类鉴定,流行规律和防治研究,基本查明了寄生在我省牦牛体内的寄生虫种,摸清了牦牛寄生线虫幼虫、成虫阶段的消长规律,明确了寄生虫病是引起幼年牦牛春乏死亡的重要原因之一,提出了在1—2月份采用丙硫咪唑10—20ms/ks对1—3岁幼年牦牛进行口服投药的防治措施。经过10万余头牦牛驱虫试验,春乏死亡大幅度下降,牦年体重显著增加。 相似文献
8.
阿维菌素防治牛皮蝇病的效果观察 总被引：3，自引：3，他引：0
王国兴 《青海畜牧兽医杂志》2003,33(4):52-52
牛皮蝇病是严重危害牦牛的一种寄生虫病 ,经过十几年的防治 ,成年牦牛的感染率得到了有效的控制 ,而幼年牛的感染率呈上升趋势。为了采取有效的防治措施 ,于 1999年 10月采用阿维菌素对犊牛防治牛皮蝇病作了防治效果观察。现将防治结果报告如下。1 材料与方法1 1 药品 阿维菌素片由辽宁省本溪制药厂生产 5mg× 10 0片瓶装。1 2 试验动物与方法 采用本场牦牛群中的当年犊牛 2 0头 ,共分为 2组 ,一组为药物试验组 ,一组为对照组 ,每组 10头。投药方法 ,试验组按 0 2mg kg体重剂量投服。翌年 3月份 ,检查背部牛皮蝇幼虫包囊感染数 ,试验… 相似文献
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采用剖检法在2008年9、10月份检查牦牛皮蝇1、2期幼虫;采用触摸法在2009年3、5月份临床检查未使用药物防治的牦牛皮蝇幼虫,采集成熟3期幼虫,进行牦牛皮蝇蛆病感染情况调查与病原形态学分类鉴定。结果显示:2008年剖检牦牛皮蝇第1期幼虫平均感染率为63.93%,平均感染强度30.6条;2009年3、5月份触摸检查牦牛背部皮下皮蝇幼虫寄生形成的瘤疱和成熟第3期幼虫脱落形成的皮肤虫孔,4个调查区平均感染率63.91%,平均感染强度5.45个;1岁、2～3岁、成年牛的感染率分别为81.65%、63.16%和31.88%,平均感染强度分别为7.8、4.9和3.5个,随着年龄的增加感染水平呈下降趋势。调查地区牦牛皮蝇蛆病的病原虫种有中华皮蝇蛆、纹皮蝇蛆和牛皮蝇蛆,其比例分别为82.35%、11.77%和5.88%。 相似文献
11.
Li W Nasu T Ma Y Zhu X Wanng W Song R Makimura S 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2004,66(7):891-892
Sixty yaks were autopsied to determine the migration pattern of warble fly larvae. In August, first instars were observed in the body of yak for the first time. These larvae peaked in number in October. From November to February, second instars were detected and their number peaked in January. Third instars appeared in January and peaked in March. Forty-five yaks were administered with ivermectin: 15 animals in September, 15 in October and 15 in November. Between December and June, the number of warbles was checked by palpation. Although some warbles were observed in the September- and November-treated groups, no warbles were detected in the October-treated group. Treatment of yaks with ivermectin was most effective for warble fly in October. 相似文献
12.
Ma M Guan G Lu B Liu A Liu Z Chang Z Li F Chang F Luo J Lu W Zhang Q Yuan G Yin H Boulard C 《Veterinary parasitology》2003,117(1-2):147-151
A chemotherapy trial was conducted to determine the lowest dosage of injectable preparation of ivermectin against Hypoderma spp. infestation in yaks in Tibetan areas in Tianzhu county, Gansu province, in northwest of China. One hundred and sixty yaks were randomly divided into four groups of 40 yaks for the trial. The first three groups were treated by subcutaneous injection in the neck with 0.1% ivermectin (respectively, 1, 5, 10 microg/kg body weight). The fourth group was not treated and considered as control group. All the experiments were performed in November 2000 and the animals were examined for the presence of warbles in the next March and May. The results indicated that there was no warbles found on the back of treated animal while third stage larvae were palpated on back of some of the yaks in control group. It is concluded that dosage of 1 microg/kg ivermectin injectable was sufficient to kill or stop development of larvae of Hypoderma spp. in naturally infected yaks if administrated in November. 相似文献
13.
Rooney KA Illyes EF Sunderland SJ Sarasola P Hendrickx MO Keller DS Meinert TR Logan NB Weatherley AJ Conder GA 《American journal of veterinary research》1999,60(4):402-404
OBJECTIVE: To determine effectiveness of a pour-on formulation of doramectin against Damalinia bovis, Haematopinus eurysternus, Linognathus vituli, Solenopotes capillatus, Chorioptes bovis, Sarcoptes scabiei, Hypoderma bovis, and Hypoderma lineatum. ANIMALS: Cattle of various ages with naturally acquired or artificial infestations with 1 or more species of lice, mites, or grubs. PROCEDURE: In 10 louse and 6 mite studies, cattle were treated with doramectin (500 microg/kg, topically) on day 0, and parasite counts were performed approximately weekly from days 0 to 35. In 6 grub studies, cattle expected to harbor Hypoderma spp were treated before emergence of warbles. After warbles began to emerge, they were counted every 2 weeks, and grubs were collected and identified by species. RESULTS: Burdens of D bovis, H eurystemus, L vituli, and S capillatus on doramectin-treated cattle were 0 by 28 days after treatment. Burdens of C bovis and S scabiei decreased to 0 in naturally infested cattle and approximately 0 in artificially infested cattle by day 14 to 15. In grub studies, 107 of 136 control cattle had warbles, whereas 2 of 136 doramectin-treated cattle had 1 warble each, which represented a cure rate of 98.5%. CONCLUSION AND CLINICAL RELEVANCE: One topical application of doramectin was highly efficacious against common species of lice, mites, and grubs known to affect performance, health, and appearance of cattle. 相似文献
14.
Systemic control of cattle grubs (Hypoderma spp.) in steers treated with Warbex and weight gains associated with grub control. 总被引：1，自引：1，他引：0 
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下载免费PDF全文 When applied to yearling steers on November 30, pour-on applications of famphur at 40 or 50 mg/kg were unsatisfactory for systemic grub control as they only reduced the number of warble grubs by 52.2 and 68.4%, respectively. The treatments, which had no adverse effects on the health of steers or cellular constituents of their blood, reduced the whole-blood cholinesterase, with the maximum reduction occurring 15 days after treatment. Low ambient temperatures prevailing at the time of treatment and during the two following weeks might have impeded the absorption of famphur through the skin and reduced its effectiveness for grub control. With the grub damage kept to the minimum by weekly manual removal of warble grubs, the groups treated with famphur at 40 or 50 mg/kg outgained (P less than 0.05) the untreated group by 29.9 and 13.4 kg/steer, respectively, during the posttreatment period of 181 days. These results indicate the economic benefits of grub control. 相似文献
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In controlled experiments utilizing artificial infestations, a topical formulation of ivermectin (IVOMEC Pour-On for Cattle) was 100% effective against migrating first instar Hypoderma lineatum for 3 weeks following treatment. Larvae were apparently killed early in the infestation as no significant level of specific antibodies was found in the treated calves. At 4 weeks post-treatment the efficacy remained high at 96%; mortality of larvae in the one calf in which warbles were observed and from which mature third instars were collected, was higher than that seen in the untreated calves, indicating some level of treatment induced effect. No specific antibodies were detected in calves that did not develop palpable warbles. Antibody kinetics in those calves from which viable larvae emerged were typical. The length of activity of this product against early stages of the cattle grub makes it practical to apply treatment up to 3 weeks before the end of fly activity. 相似文献
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旨在研发半舍饲条件下淘汰母牦牛育肥及犊牦牛培育技术。选取带犊母牦牛和公犊牛各66头,分别随机分为试验组和对照组。在犊牛培育期间（2017年12月4日—2018年3月5日）,对试验组母牦牛进行补饲,试验组犊牦牛断乳前（3月5日断乳）随母牦牛哺乳,并进行补饲;对照组母牦牛不进行补饲,按常规放牧方式饲养,对照组犊牦牛进行断乳并补饲。育肥期间（2018年3月5日至出栏）对试验组母牦牛进行补饲,于6月错峰出栏;对照组母牦牛不进行补饲,于集中出栏时间出售（9月或10月）。在犊牦牛培育期间,观察试验组母牦牛的体重变化情况;每月4日测定2组犊牦牛的体重和体尺指标,并进行统计学分析。计算试验组母牦牛错峰出栏收益。结果表明,在犊牦牛培育阶段,由于试验组犊牦牛随母牦牛哺乳,试验组母牦牛体重平均下降1.17 kg/头;2018年1月4日,试验组犊牦牛的体重极显著（P<0.01）高于对照组,体斜长和胸围显著（P<0.05）高于对照组;2018年2月4日和3月4日,试验组犊牦牛的体重、体高、体斜长、胸围均极显著（P<0.01）高于对照组。试验组母牦牛错峰出栏的效益为1 063.05元。研究结果为提高半舍饲条件下淘汰母牦牛养殖效益以及提升犊牛培育质量提供了技术支撑。 相似文献
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为观察伊维菌素浇泼剂、注射剂对牦牛皮蝇蛆病的防治示范效果,选择放牧饲养的牦牛,伊维菌素浇泼剂按0.5mg/kg体重剂量沿背中线浇泼给药,伊维菌素注射剂按0.2mg/kg体重剂量颈部皮下注射给药,同时留未防治的对照群,分别在3、5月份采用触摸法抽样进行防治效果检查。结果:伊维菌素浇泼剂防治示范组牦牛2次检查的皮蝇蛆感染率在1.61%~3.23%之间,平均感染率2.42%,查出瘤疱和皮肤虫孔总数7个,平均感染强度1.75个,感染范围0~2个。2次检查未防治的对照组牦牛皮蝇蛆感染率在33.33%~38.89%之间,平均感染率为36.11%,查出瘤疱和皮肤虫孔总数152个,平均感染强度4.22个,感染范围0~14个。结果表明:伊维菌素浇泼剂防治示范组牦牛皮蝇蛆病治愈率为98.39%,驱虫率99.08%~99.54%,平均驱虫率99.31%;伊维菌素注射剂防治示范组牦牛皮蝇蛆病治愈率在98.39%~100.0%之间,平均治愈率为99.20%,驱虫率98.62%~100.0%,平均驱虫率99.31%。2种剂型的推荐剂量均达到了高效安全,可在高寒牧区牦牛皮蝇蛆病防治中推广应用。 相似文献
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为了研究性别对查吾拉地区牦牛的产肉性能及肉营养成分的影响,随机选取8岁健康的查吾拉牦牛10头,公母各半,对不同组别间牦牛进行屠宰试验比较肉营养品质的差异。结果表明,母牦牛屠宰率、净肉率、胴体率、骨肉比均高于公牦牛,但无统计学差异。肉营养成分分析结果显示,母牦牛肉中维生素A、E、B12、半胱氨酸、组氨酸、精氨酸、钙、硒、脂肪酸含量高于公牦牛(P<0.05)。研究结果表明,查吾拉牦牛富含较高的营养成分,可为人类提供优质健康的动物蛋白,具备作为优质牦牛肉源生产的潜力。相比较,母牦牛肉优于公牦牛。 相似文献
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产后无发情和亚发情母牦牛激素诱导发情试验 总被引：3，自引：0，他引：3
选择怀孕母牦牛84头,在生产前后1个月进行补饲,其中40头在产后当年发情季节进行激素诱导发情试验,44头作对照;另选择60头自然生产的产后母牦牛在发情季节进行单纯的激素诱导发情试验,60头作对照.激素诱导发情方法是0 d注射氯前列烯醇0.2 mg,7 d后注射促黄体素释放激素A3 25 μg,连续3 d;在0和7 d进行直肠检查和血样采取,血样进行孕酮测定;测定处理时母牦牛卵巢状态,观察母牦牛发情配种受孕情况.结果显示,通过直肠检查和血浆孕酮测定,发现无发情状态的产后母牦牛占产后牦牛的63.33%和65%,亚发情的产后母牦牛占产后牦牛的36.67%和35%.采用氯前列烯醇和促性腺激素释放激素处理方案进行诱导发情,26.67%的产后母牦牛在处理后出现了发情;对怀孕母牦牛在围产期进行补饲,产后母牦牛在发情季节采用氯前列烯醇和促性腺激素释放激素诱导发情,有45.45%的产后母牦牛恢复了发情,而只补饲不进行激素诱导发情的母牦牛只有20%的母牦牛出现了发情;通过孕酮测定发现2组中激素诱导发情成功的母牦牛中,有68.18%和72%是处于亚发情状态的母牦牛.结果表明,氯前列烯醇和促性腺激素释放激素进行诱导发情的处理方案适合于产后亚发情状态的母牦牛. 相似文献