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2003年1～12月份，我们在甘肃及其周边局部地区进行禽病调查研究，发现鸡病种类繁多，2003年上半年病种多达29种，计发病鸡群数176起。下半年病种高达22种，计发病鸡群数172起，全年合计发病鸡总群数348起，其中发病率居高不下，危害最烈的依然是鸡传染性支气管炎（IB），排名第1位，它占鸡发病总数的19.54％（68/348），鸡大肠杆菌病排名第2 相似文献
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由于养殖业高速发展,在新的经营方式情况下,使得畜禽疫病不断发生,动物新病不断增加,而且某些新病的出现都带有普遍性,在大面积、大范围内流行,甚至趋于全国化或全球化。日前,国内畜禽中新老疾病时有暴发,西北各地逐年增多,给养殖业带来了极大的不利影响,就以当前的猪病情况来说,据2002年1-12月份我们在甘肃省及其周边的一些局部地区调查,猪病发生种类多达44种,计发病猪群502起,发病频率高,比较常见,比较严重的老 相似文献
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猪、禽巴氏杆菌多由A群多杀性巴氏杆菌引起。在一定条件下可以互相感染。禽巴氏杆菌感染猪的病例多见有报道,现将本地发生鸡、鸭摄食病猪毛、皮、组织发病死亡的病例报告如下。正发病增况德化县某猪场1994年12月28日下午解剖1头疑为猪肺疫死亡的病猪,从次日到1995年五月3日,附近的63羽鸡和ZI羽白鸭（皆为中成年禽）先后发病死亡,共死亡44羽鸡和16羽白鸭。1996年1月22日剖检1头拟猪肺疫死亡的病猪,剖检病猪后5天内该区域内饲养的36羽鸡中28羽死亡。据查这些病鸡均有啄食死猪病料历史。2;＠床症状鸡在吞食病料后8～Ic小时开始发病,首… 相似文献
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1、猪禽病情况
2002年猪病发生的种类复杂,多达44种,发病猪群达502起,发病频率高、比较突出、比较严重以及新出现的或老病新颜的猪病统计也在10种以上.在猪病中猪瘟(含典型猪瘟、非典型猪瘟和繁殖障碍性猪瘟)仍居首位,占整个发病猪群的13.35%,仔猪黄白痢占7.57%,流行性腹泻占7.77%,猪传染性胸膜肺炎占6.57%,猪繁殖呼吸综合征占6.57%,猪链球菌病2.59%,猪伪狂犬病、猪气喘病、猪萎缩性鼻炎和猪脑炎各占5.18%,猪附红细胞体病3.38%,猪的“高温病“7.83%,仔猪断奶综合征3.23%,猪葡萄球菌病2.76%,疑似猪圆环病毒感染5.99%,猪“猝死症“0.92%,还有其它零星出现的猪病均占相当比例.…… 相似文献
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巴氏杆菌病为多种畜、禽因多杀性巴氏杆菌所致的一种传染病。同种畜或禽之间相互感染较为常见 ,而禽与畜之间相互感染则少见报导 ,仅 1981年中国兽医杂志刊登 1篇禽霍乱感染猪发病的报告和 1982年四川有过猪、鸡交互感染巴氏杆病的报告。为确诊禽、畜之间的相互感染 ,以增加该方面的参考资料 ,现将某县禽 (鸡、鸭 )和猪相互感染巴氏杆菌病的病例报告报导于下。1 流行情况1995年 7月下旬某县养禽场暴发疾病 ,死亡鸡、鸭 12 50只 ,8月仅隔禽场一个路道的猪场发病 ,病猪13头 ,死亡 2头 ,另 11头用抗菌素 ,磺胺类药物治愈。病禽用青霉素、土霉… 相似文献
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猪传染性胸膜肺炎是一种呼吸道传染病,以呈现肺炎和胸膜炎症状和病变为特征,该病常继发链球菌感染。1发病情况某养殖户饲养40余头猪,因养殖条件不太完善,饲养管理水平比较差,在今年3月份,猪群突然发病,食欲减退或废绝、发烧。2临床症状病猪流鼻液、咳嗽、体温升高、食欲减退、病猪卧地不起、呈犬坐姿势、全身皮肤淤血呈暗红色,几天后,病 相似文献
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弓形体病是一种人畜共患的寄生虫病，笔者在参与某农场种猪场猪痢疾净化试验过程中，发现一群育肥猪(体重30—50kg)爆发弓形体病，经过及时诊断和治疗，大多数病猪恢复良好。现将发病、诊断、治疗情况报道如下。 相似文献
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1996年8月15日，我县某单位食堂猪场闯割后的猪群暴发一种急性疾病。4天内发病25头，死亡11头，经诊断确认为猪链球菌病。1．发病情况该食堂猪场共饲养菜猪32头，8月14日下午，阁制员对该场7头母猪进行闭割。第2天中午被闭割的7头母猪均出现发热、体温升高达41．5一42’C，拒食，随后同群其它猪只也相继发病。15－18日期间，整个猪群发现病猪25头，发病率78．l％；死亡11头，死亡率44％。2．临床症状该病多呈急性经过。最急性的病猪突然发病立即死亡。急性病例精神高度沉郁，昏睡，卧地不起，体温升高到41．5－42”C，呈稽留热。食欲废绝。… 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