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用驱虫康对星湖湿地公园里的丹顶鹤进行全群驱虫,结果只驱出卷棘口吸虫一种寄生虫.经统计,丹顶鹤群感染卷棘口吸虫的比例为67.9％ （38/56）,全群驱虫取得良好效果. 相似文献
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卷棘口吸虫是棘口科的各属吸虫之通称。家禽的棘口吸虫病是由棘口科棘口属的吸虫寄生于鸡、鸭、鹅等禽鸟类的直肠和盲肠。除鸡、鸭、鹅外,猪、猫、家鼠、兔和人均可感染,对雏禽危害较大。虫体呈细长叶状,呈肉红色,体表具有小刺。体长7．6～12．6毫米,最大宽度1．26-1．6毫米。中间宿主为螺蛳、蝌蚪,鹅吞含有囊蚴的中间宿主而被感染。 相似文献
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卷棘口吸虫是棘口科的各属吸虫之通称。家禽的棘口吸虫病是由棘口科棘口属的吸虫寄生于鸡、鸭、鹅等禽鸟类的直肠和盲肠,在各地普遍流行,除鸡、鸭、鹅外,猪、猫、家鼠、兔和人均可感染,对雏禽危害较大。虫体呈细长叶状,呈肉红色,体表具有小刺。体长7．6～12．6mm,最大宽度1．26～1．6mm。中间宿主为螺蛳、蝌蚪,鹅吞食含有囊蚴的中间宿主而被感染。 相似文献
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《中国动物传染病学报》2015,(4)
为鉴定喜鹊和山斑鸠体内棘口吸虫种类,本文采用形态学结合分子生物学方法对其进行了种类鉴定。分子生物学结果显示,来源于喜鹊和山斑鸠虫体的线粒体NADH脱氢酶1(ND1)基因同源性为99%,在构建的系统发育树中,两种鸟的虫体ND1序列归类在同一分支,与其亲缘关系最近的是强壮棘口吸虫(Echinostoma robustum)和弗氏棘口吸虫(E.friedi)。形态学观测结果显示,来自同一种鸟的虫体具有相似的形态结构,而两种鸟之间的虫体形态存在一定差异;通过比较所获得虫体与强壮棘口吸虫、弗氏棘口吸虫之间的形态特征,发现这两种鸟体内检出的棘口吸虫均与弗氏棘口吸虫的的形态特征更为相符。结合分子生物学和形态学鉴定的结果,确定感染喜鹊和山斑鸠的棘口科吸虫均为弗氏棘口吸虫,这是弗氏棘口吸虫在国内的首次报道,喜鹊和山斑鸠应为弗氏棘口吸虫的新宿主。 相似文献
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江苏省仪征市铜山乡家鸭寄生蠕虫的种类调查 总被引：1，自引：0，他引：1
对江苏省仪征市铜山乡60只家鸭进行剖检后,共计检出2门4纲11科12属13种蠕虫,所有被检鸭均100%感染蠕虫,且均为2种以上蠕虫混合感染。其中,感染率较高的是舟形嗜气管吸虫、鸭对体吸虫、卷棘口吸虫,其平均感染强度也较高,是优势虫种;其次为冠状膜壳绦虫、宫川棘口吸虫、纤细背孔吸虫、东方次睾吸虫、卵圆前殖吸虫;鹅裂口线虫、矛形剑带绦虫、优美异幻吸虫、分棘四棱线虫和鸭细颈棘头虫感染率相对较低。这是该地区鸭寄生蠕虫感染情况的首次报道,以期为该地区家鸭寄生虫病防治方案的制定提供参考依据。 相似文献
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剖检福安市麻鸭30只,检得蠕虫11种,总感染率为73.3％。分别为:鸭两尖吸虫23％,楔形前殖吸虫23％,卷棘口吸虫7％,宫川棘口吸虫23％,接睾棘口吸虫3％,似难低颈吸虫3％,细背孔吸虫7％,舟形嗜气管吸虫3％,叉棘单睾绦虫13％,裂刺四棱线虫47％,鸭瓣口线虫20％。群落生态分析表明,优势种为裂刺四棱线虫。两两种间关系中,卷棘口吸虫分别与宫川棘口吸虫和鸭瓣口线虫呈正关联(P<0.05);接睾棘口吸虫、舟形嗜气管吸虫和似锥低颈吸虫之间呈负关联(P<0.05)。种群分布型中属随机分布的有卷棘口吸虫、接睾棘口吸虫和舟形嗜气管吸虫,其余8种均为聚集分布。 相似文献
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魏静 《四川畜牧兽医学院学报》2009,(4):28-32
在现代法律秩序中,商会自治规范是制定法的基础和必要的补充,甚至在某些方面替代了制定法;商会自治规范主要包括商会组织规范、行为规范、惩罚规范以及争端解决规范等;其效力仅及于其内部成员;商会自治规范和制定法之间存在冲突,但也存在整合的基础。 相似文献
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本文概述了猪的毛色类型、猪的毛色遗传模式,着重综述了猪毛色基因分子基础的研究进展,指出存在问题并就未来发展方向做了思考。 相似文献
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REASONS FOR PERFORMING STUDY: Centesis of the bicipital bursa using an 8.9 cm long spinal needle has been reported but the alternative of employing a 3.8 cm long hypodermic needle requires validation. OBJECTIVE: To compare the efficacy of 2 different methods of centesis of the bicipital bursa and to evaluate the usefulness of ultrasonographic imaging to determine the location of solution administered when centesis of the bursa is attempted. METHODS: For Trial 1, 6 clinicians, who had no previous experience of centesis of the bicipital bursa, attempted to inject a solution composed of an aqueous radiopaque contrast medium and physiological saline solution (PSS) into the bicipital bursae of 2/12 horses using the previously described distal approach to inject one bursa and a proximal approach to inject the contralateral bursa. The bicipital tendon and bursa were examined ultrasonographically before and after injection; and both shoulders were examined radiographically to identify the location of the medium. In Trial 2, another 6 clinicians, also with no previous experience of centesis, repeated Trial 1, using 6 horses, but the radiopaque contrast medium was mixed with air instead of PSS. RESULTS: Accuracy of centesis using the proximal approach was 39% and that of the distal approach 28%. Ultrasonographic examination of the shoulder allowed the location of solution and air to be accurately predicted in all 12 shoulders examined. CONCLUSIONS: Clinicians who have had no previous experience performing centesis of the bicipital bursa are unlikely to be successful in centesis using either approach. Radiographic examination after injecting a radiopaque contrast medium may be necessary to assess the success of centesis especially if bursal fluid is not obtained during centesis. Injecting air along with the radiopaque contrast medium provides more accurate ultrasonographic confirmation of centesis and better radiographic definition than does injection without air. 相似文献
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Effects of size of ingestively masticated fragments of plant tissues on kinetics of digestion of NDF
Ingestively masticated fragments were collected and sized via sieving. Different sizes of esophageal masticate and ruminal digesta fragments, and ground fragments of larger masticated pieces were incubated in vitro, and undigested NDF remaining at intervals of up to 168 h of incubation was determined. The ruminal age-dependent time delay (tau) for onset of digestion of NDF was positively correlated (P < 0.004) with the mean sieve aperture estimated to retain 50% of the fragments between successive sieve apertures (MRA). Degradation rate of potentially degradable NDF (PDF) and level of indigestible NDF were not related (P > 0.10) to MRA of masticated and ground fragments. Estimates of tau were positively related to MRA, with slopes of bermudagrass < corn silage < ruminal fragments of corn silage. It was concluded that fragment size-, and consequently, ruminal age-dependent onset of PDF degradation of a mixture of different fragment sizes results in an age-dependent rate of degradation of the more rapidly degrading of two subentities of PDF. Models are proposed that assume a tau before onset of simultaneous degradation of PDF from two pools characterized as having gamma-modeled age-dependency and age-constant rates. The ruminal age-dependent pool seems to be associated with the faster-degrading pool, and its rate parameter increases with range in MRA in the population of fragments. Conceptually, the ruminal age-dependent rate parameter for PDF degradation seems to represent a composite of several effects: 1) effects of the size-dependent tau; 2) range in MRA of the population of ingestively masticated fragments; and 3) subentities of PDF that degrade via more rapid age-dependent rates compared with subentities of PDF that degrade via age-constant rates. The estimated fractional rates of ruminative comminution of ingestively masticated fragments (0.060 to 0.075/h) were of a magnitude similar to the mean fractional rates of PDF digestion (0.030 to 0.085/h), which implies that ruminative comminution may be first-limiting to fractional rate of PDF digestion. The in vivo roles of ingestive and ruminative mastication of fragments on PDF degradation must be considered in any kinetic system for estimating PDF digestion in the rumen. These results and others in the literature suggest that the rate of surface area exposure rather than intrinsic chemical attributes of PDF may be first-limiting to degradation rate of PDF in vivo. 相似文献
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以国际标准强毒Ｒ株人工感染非免疫产蛋鸡,定时扑杀,分别从鼻窦、眶下孔、气管、肺、气囊、卵巢和输卵管分离ＭＧ,并收集感染鸡所产蛋分离ＭＧ。结果表明,人工感染４８小时后上、下呼吸道及肺已被全面感染,９６小时气囊已被感染,１２０小时输卵管已能分离到ＭＧ,卵巢始终分离不到ＭＧ。人工感染鸡自１４４小时便能在其所产蛋中分离出ＭＧ。药物治疗能在７２小时内消除感染,油乳剂苗则需２４天后逐渐降低蛋内ＭＧ分离率,药物卵内注射、种蛋药浴、高温处理均能杀死卵内ＭＧ,但以研制的种蛋浸泡剂药浴效果为最好。 相似文献