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2012年5-10月在全省42个县(市、场)进行了牛、羊布病流行病学调查和疫情监测。全省累计监测牛、羊419056头(只),检出阳性牛、羊3751头(只),平均阳性率为0.90%。其中:监测奶牛123834头,检出阳性338头,平均阳性率为0.27%;监测其它牛119184头,检出阳性牛2187头,平均阳性率为1.83%。监测羊176038只,检出阳性牛1226只,平均阳性率为0.70%。为了解青海省牛羊布病感染流行情况,青海省动物疫病预防控制中心2012年在全省范围内,现将调查情况报告如下。 相似文献
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《养殖与饲料．饲料世界》2021,(10)
为了解河南省奶牛布病感染情况,本研究对2020年河南省未免疫牛群布病监测情况进行了调查和分析统计。对来自459场次的17 207份牛血清样品进行了布病抗体检测,检出布病感染抗体阳性场群8个,阳性样品19份,平均个体阳性率和场群阳性率分别为0.11%和1.74%。结果表明:存栏量小于500头养殖场户的布病个体阳性率和场群阳性率分别为0.08%和1.86%;存栏量介于500～3 000头奶牛场的个体阳性率和场群阳性率分别为0.16%和1.83%;存栏量大于3 000头的大规模奶牛场无布病阳性样品检出。8个阳性场群在河南省不同区域均有分布,其中豫中地区4个,豫东、豫西、豫南和豫北地区各1个。调查结果说明河南省奶牛布病感染情况具有一定的群间和空间分布特征,应依据不同地区和场群的流行特点制定相应的防控措施。 相似文献
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新宾满族自治县地处辽宁东部山区，牧草丰盛，很适合发展牛、羊、鹿等草食畜牧业。近几年来，由于各级政府对畜牧业发展的高度重视，畜牧业已成为广大农民脱贫致富的重要产业。目前，全县绒山羊饲养量达31万只，黄牛、奶牛和鹿饲养量也在逐年增加。近年来由于外引羊、奶牛渠道广泛，难免将疫源带入，使我县布病疫情有所抬头，而且出现人员感染布病数量增多的严峻趋势。面对这种情况，新宾县加大了对布病防治的工作力度，从2003年开始，用三年时间，对牛、羊、鹿进行布病监测。累计监测牛1989头（其中奶牛145头），羊9677只，鹿69只，检出布病阳性畜，全部做无害化处理，收到了预期的效果。 相似文献
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奶牛流产问题在奶牛养殖业中经常出现,造成奶牛流产的诸多原因中,布鲁氏菌病(brucellosis,以下简称布病)导致的流产是奶牛流产中最主要的原因之一,必须引起奶牛养殖户和有关方面的高度重视。我站2004年经对15560头存栏奶牛,进行布病监测和流行病学调查。布病监测结果表明,个别被布病感染的小区奶牛的流产率高达13.1%,由于布病导致的流产占流产数的57.1%。1规模化小区奶牛流产情况的调查1)我县兽医站化验室对全县奶牛每年进行两次监测(包括布病和结核病)工作,经对每个奶牛小区的流产情况进行调查,发现奶牛监测中布病阴性的小区,奶牛流产率为… 相似文献
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瑞安市地处浙江东南部,青绿饲料丰富,适宜奶牛饲养.2003年存栏奶牛3100头,在2004年上半年开展的全市奶牛结核病、"布病"监测中(下称"两病"监测),查出结核病阳性病例292头,"布病"阳性病例6头,分别占存栏牛数的9.4%和0.2%.为有效开展奶牛"两病"防治工作,已制定具体措施,取得了良好效果. 相似文献
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1990年5月,棋盘农场的85头奶牛突然发生以腹泻为主症的疾病,同时有口、鼻及消化道粘膜发炎、糜烂或溃疡等病变,其发病率为137头存栏牛的62.1%。该场饲养的115只绵羊由于常与牛群接触,有43只亦感染而发病。经3～4天,死亡1头奶牛和5只绵羊。同期,郭仁进等3个养牛专业户的11头奶牛也发生同样疾病。12头妊娠奶牛中2头发生流产,经布病血清学检查,呈阴性反应。病初,用抗生素与磺胺类药物治疗无效,后经会诊,根据临床症状、剖检变化等综合分析,疑为牛病毒性腹泻-粘膜病,遂 相似文献
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甘肃省奶牛布鲁氏菌病的调查与分析 总被引：1，自引：0，他引：1
通过对甘肃省2000-2009年奶牛布病现状调查,全省共发病313头,发病数由4头上升到177头;检疫奶牛417 418头,阳性311头,阳性率0.075%,阳性率由0.01%上升到0.17%.结果表明:发病数量与感染率均呈上升趋势,局部疫情回升明显,存在较大的潜在威胁.对流行因素进行了分析,探索布病流行与防控工作的关系,提出了综合性防控对策. 相似文献
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喀什地区奶牛两病流行状况调查分析及防制措施探讨 总被引：1，自引：0，他引：1
喀什地区牛存栏量达到82万余头,其中适龄奶牛有41万余头,占到牛存栏量的50%左右,每年奶牛产奶量达到14余万吨。多年来,喀什地区十分重视奶牛布病和结核病的防治 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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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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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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乳酸杆菌作为益生菌广泛用于人和动物.本文综述了乳酸杆菌改善宿主健康的机制.乳酸杆菌可通过产生抗菌物质如乳酸、过氧化氢、细菌素,或者通过竞争营养或肠道黏附位点来抑制致病菌;通过诱导黏附素的分泌或阻止细胞凋亡而增强肠道的屏障功能,从而保护肠道.文章重点讨论了乳酸杆菌表面成分(表面蛋白、脂磷壁酸和肽聚糖)与肠道受体(C型凝集素受体、Toll样受体和Nod样受体),阐述了他们结合后启动免疫调节信号,调控肠道免疫功能以发挥改善健康作用的机制. 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
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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