脑多头蚴病研究进展

脑多头蚴病是由多头带绦虫的中绦期幼虫脑多头蚴寄生于绵羊、山羊、黄牛、牦牛等有蹄动物的脑及脊髓中引起的一种人兽共患寄生虫病,人可因误食虫卵而感染此病。该病在宿主出现典型临床症状后如果得不到治疗,多以死亡为转归,给畜牧业生产造成了巨大的经济损失。论文就脑多头蚴病的病原学、生活史、流行病学、临床症状、诊断、治疗及免疫预防等方面的研究进展进行了综述。     

牛、羊脑多头蚴病的诊断与防治

脑多头蚴病是由寄生于狗、狼等肉食兽小肠里多头绦虫的幼虫（脑多头蚴）寄生于牛、羊的脑部所引起的绦虫蚴病,俗称脑包虫病。因为能引起患畜明显的转圈症状,又称为转圈病或旋回病。     

羊脑包虫病的防治及体会

<正>羊脑包虫病又称脑多头蚴病,是由寄生于犬(狼或狐等)的多头绦虫的幼虫(脑多头蚴)寄生在羊的脑脊髓内引起的一种寄生虫病。该病以脑炎、脑膜炎及周期性转圈运动为特征,是危害羊群的严重寄     

牛多头蚴孢囊的摘除术

1 临床症状 牛多头蚴病是由寄生于犬、狼、狐狸等肉食动物小肠里多头绦虫的幼虫（脑多头蚴）寄生于牛的脑部所引起的绦虫蚴病，俗称脑包虫病。因能引起患畜明显的转圈症状，又称为转圈病。     

浅谈羊的脑多头蚴病

脑多头蚴病的病原体是多头绦虫的幼虫(脑多头蚴)引起的，广大养畜户习惯称之为脑包虫病。脑多头蚴的成虫在终末宿主犬等肉食兽的小肠寄生，幼虫寄生在绵羊、山羊等有蹄兽的脑内，有时在羊脊髓和延脑中可发现，有报道人也能感染本病。它是严重危害绵羊和犊牛的寄生虫病，对养羊户造成一定的经济损失。     

山羊脑多头蚴病的药物治疗

山羊脑多头蚴病(俗称脑包虫病)是由多头绦虫的幼虫——脑多头蚴寄生在山羊的脑内引起脑炎，脑膜炎及一系列神经症状，甚至死亡的严重寄生虫病。     

牛、羊脑多头蚴病的症状及诊治

脑多头蚴病是由寄生于狗、狼等肉食动物小肠里多头绦虫的幼虫（脑多头蚴）寄生于牛、羊的脑部所引起的绦虫蚴病,俗称脑包虫病。患畜有明显的转圈症状,又称为转圈病或旋回病,人亦可感染。     

同心县羊包虫病发病情况调查及其防治

羊包虫病包括多头蚴和棘球蚴。多头蚴俗称脑包虫，是多头绦虫的幼虫，寄生于羊脑内；棘球蚴是细粒棘球绦虫的幼虫，包括无头棘球蚴、人型棘球蚴及多房棘球蚴，主要寄生于羊的肝脏、肺脏，人亦可感染。多头蚴与棘球蚴的成虫寄生于犬、狼、狐狸等终未宿主的小肠内，其孕卵体节脱落后，随粪便到体外。     

脑包虫病的诊断及防治措施

脑包虫病(脑多头蚴病)是由于多头绦虫的幼虫--多头蚴寄生在绵羊、山羊的脑、脊髓内,引起脑炎、脑膜炎及一系列神经症状,甚至死亡的严重寄生虫病.多头蚴还可危害黄牛、牦牛、猪、马甚至人类.成虫则寄生于犬、狼、狐、豺等肉食兽的小肠.该病散布于全国各地,并多见于犬活动频繁的地方.     

牛羊多头蚴的防治体会

牛羊多头蚴是由寄生于狗、狼、狐等的带科多头绦虫的幼虫—多头蚴寄生于牛羊的脑部所引起的一种绦虫蚴病,俗称“脑包虫”、“转头风”、“转圈病”。本病分布较广,遍及我区,死亡率高,对牧业发展危害较大。1病因脑包虫病是多头绦虫的幼虫、成虫寄生在狗、狼、狐等的小肠内,随粪便排出体外,从孕卵节片内释放大量的虫卵,     

癸氧喹酯干混悬剂含量测定的改进

采用高效液相色谱法测定癸氧喹酯干混悬剂的含量,在2-250μg/mL范围内,峰面积的常用对数与进样量浓度的常用对数呈良好的线性关系,R^2=1(n=5),平均回收率为99.24%~99.51%,RSD在0.05%~0.28%。此方法分析时间短,样品前处理简便、定量结果准确,重现性好,结果满意,为其质量控制提供了依据。     

猪毛色遗传的研究进展

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。     

商会自治的基石——商会自治规范研究

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。     

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.     

中华人民共和国农业部公告 第267号

为贯彻落实《兽药生产质量管理规范》(简称《兽药GMP》),进一步推动兽药GMP实施进程,我部制定了《兽药生产质量管理规范检查验收办法》,现予公告。本公告自2003年6月1日起施行。附件:兽药生产质量管理规范检查验收办法二○○三年四月十日第一章 总则 第一条 为推动《兽药生产质量管理规范》(以下简称兽药GMP)的实施,规范兽药GMP检查验收工作,制定本办法。 第二条 农业部负责全国兽药GMP管理和检查验收工作;负责制修订兽药GMP检查验收管理规定;负责兽药GMP检查员队伍建设和监督管理工作,负责国际兽药贸易中GMP互认工作。 …     

鸡败血支原体垂直传播模式及其阻断方法

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。     

Mechanism of Action of Probiotic Function of Lactobacilli

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.     

獭兔睾丸的组织学观察

家兔作为一种实验动物 ,推动了繁殖技术的发展。本试验通过对不同年龄公獭兔的睾丸进行组织学观察、测定 ,研究精子的发生规律 ,为系统地进行繁殖生理工作提供依据。1　材料与方法选 60日龄、75日龄、90日龄 3个年龄公獭兔各5只 ,用外科手术法摘取两侧睾丸 ,放入 Bouin氏液中固定 ,二甲苯透明 ,石蜡包埋 ,切成 5～ 8μm切片 ,H.E.染色。在显微镜下观察 ,并进行定量组织学指标测定及差异性比较。2　结果和讨论2 .1　睾丸定量组织学指标的测定结果　见表 1。表 1　獭兔睾丸定量组织学指标　　　μm,个 /精细管60日龄 75日龄 90日龄曲细精管…     

Observations of fracture of the anconeal process of the ulna of swine

Fractures of the anconeal process of 5 pigs ranging in age from 4 to 8 months were studied radiographically and histologically. Clinically, animals with a fracture of the anconeal process had a "tight," restricted gait. In pigs at 4.5 months of age, a radiolucent line through the base of the anconeal process was composed of fibrocartilage, fibrous connective tissue, and hyaline cartilage. Subperiosteal proliferation of woven bone was located along the cranial surface of the olecranon, adjacent to the base of the anconeal process. In older animals, the radiolucent line through the anconeal process contained variable amounts of fibrous connective tissue and fibrocartilage. The proliferation of subperiosteal bone at the base of the anconeal process formed a "buttress callus" which retained a radiolucent area between the callus and the proximal surface of the anconeal process. The latter region of radiolucency was continuous with the transversely oriented line that traversed the base of the anconeal process.