共查询到20条相似文献，搜索用时 500 毫秒
1.
2.
按照《内蒙古自治区防制牛皮蝇蛆病五年规划实施方案》的要求，全市有组织有计划地开展了大规模、大面积药物防治牛皮蝇蛆病工作．显示了巨大的直接经济效益和社会效益。现将通辽市六年来牛皮蝇蛆病防治调查情况报告如下。 相似文献
3.
牛皮蝇蛆病是一种常见的寄生虫病,对兽类健康、畜牧业发展有严重危害.鉴于此,本文对牛皮蝇蛆病的相关认知进行了阐述,分析了牛皮蝇蛆病的临床表现,并提出了相应的防治措施,以期对养牛业持续健康发展提供帮助. 相似文献
4.
正牛皮蝇蛆病是由狂蝇科皮蝇属的牛皮蝇(Hy-poderma bovis)和纹皮蝇(H.lineata)的幼虫寄生于牛的皮下组织,所引起的一种慢性的寄生虫病。笔者在实际生产中发现这些育肥牛大都有牛皮蝇蛆病存在,这不仅影响牛的育肥速度和皮张质量,且给当地的养牛业造成了巨大的经济损失,作者就此病的症状、诊断、防治作一综述,以供大家参考。 相似文献
5.
<正>牛皮蝇蛆病是由皮蝇属(Hypoderma)的纹皮蝇(H.lineatum)和牛皮蝇(H.bovis)的幼虫(藏语叫"布")寄生于牛的皮下组织(主要在颈肩部、背部、臀部等处)而引起的一种慢性侵袭性寄生虫病。牛皮蝇蛆病是世界性分布的寄生虫病,也是我县草原放牧牦牛最常见、危害较严重的寄生虫病之一,养牛业在称多县畜牧业经济中所占比重较大,是县畜牧业经 相似文献
6.
锡盟采取集团承包形式推广牛皮蝇蛆病防治技术王泽文（内蒙古锡林郭勒盟技术监督局，０２６０００）内蒙古锡林郭勒盟以畜牧业经济为主，养牛业发展很快，成为牧区的一大支柱产业。据统计，到１９９３年末，全盟存栏牛９４．５万头，年产牛肉３１０９．９万公斤，牛奶９９... 相似文献
7.
青海省互助县北山地区是自牦牛的主产区,白牦牛是牦牛中的一种经济类型。牛皮蝇蛆病是危害牦牛的首要寄生虫病,使幼龄牛发育受阻,成年牛产肉和产奶量下降,皮革质量下降,给畜牧业生产和制革业造成了巨大的经济损失。为掌握白牦牛皮蝇蛆病感染情况,笔者于2008年3月～6月对北山地区的白牦牛进行了牛皮蝇蛆病的调查,并用伊维菌素进行防治,为今后该病的防治提供了科学依据。现将调查情况和防治效果报告如下。 相似文献
8.
青海省互助县北山地区是白牦牛的主产区,白牦牛是牦牛中的一种经济类型[1].牛皮蝇蛆病是危害牦牛的首要寄生虫病,使幼龄牛发育受阻,成年牛产肉和产奶量下降,皮革质量下降,给畜牧业生产和制革业造成了巨大的经济损失[2].为掌握白牦牛皮蝇蛆病感染情况,笔者于2008年 3月～6月对北山地区的白牦牛进行了牛皮蝇蛆病的调查,并用伊维菌素进行防治,为今后该病的防治提供了科学依据.现将调查情况和防治效果报告如下. 相似文献
9.
10.
青海省海北地区某农牧场牛皮蝇和纹皮蝇生物学特性的观察 总被引：4，自引：2，他引：2
杨发春 《青海畜牧兽医杂志》1983,(3)
牛皮蝇蛆病是牛的主要寄生虫病之一,我省每年因牛皮蝇蛆病造成巨大的经济损失,为了尽快地控制牛皮蝇蛆病,给防治该病提供科学依据,自《青海省海北地区牦牛皮蝇的调查报告》发表后,笔者在该地继续进行了工作,着重对幼虫落地季节、成蝇活动季节、幼虫移行情况做了调查,现将观察结果报告如下: 相似文献
11.
12.
13.
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
14.
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
15.
16.
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
17.
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
18.
19.
20.
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