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奶牛蹄病包括蹄变形、蹄叶炎、腐蹄病、指（趾）间赘生、局限性蹄皮炎、蹄底脓肿和蹄底创伤等疾病,已成为危害奶牛生产的“四大疾病”之一,业已引起广大奶牛养殖户的重视．为此．笔者结合自己的实践体会浅谈一下有关蹄病的综合防治技术。 相似文献
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奶牛蹄病的预防与保健 总被引：3，自引：0，他引：3
李文 《上海畜牧兽医通讯》2009,(4):44-45
蹄病是蹄子所有疾病的总称,是严重威胁奶牛健康的、仅次于奶牛乳房炎和不孕症的疾病之一。蹄病主要有蹄叶炎、蹄底出血、蹄底溃疡、创伤性蹄部真皮炎、踵裂、腐蹄病、趾间坏死杆菌病、趾间增生、趾皮炎、白线病等11种。急性蹄病的组织学病变主要是红肿热痛的炎症反应,但外观则为站立和行走姿势异常、跛行、生产性能下降等。 相似文献
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《北方牧业(奶牛)》2008,(2):25-25
奶牛蹄病是奶牛最常发生的四大疾病之一,由于各个养殖场的具体情况不同蹄病的发病率也不同．有些养殖场发病率高这40％,它不但影响奶牛的正常生活,而且还会导致奶牛生产性能下降．如果处理不当甚至会导致奶牛淘汰．造成较大的经济损失、奶牛蹄病的种类包括腐蹄病、蹄变形、蹄叶是、蹄皮炎、指（趾）间赘生、蹄糜烂和蹄底创伤等疾病。 相似文献
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蹄是奶牛的重要支柱器官，而蹄病严重威胁奶牛健康。蹄病在经济上、育种上造成严重损失，导致生产性能下降，是奶牛的一种危害性极大的疾病。在临床上表现为蹄叶炎、蹄底溃疡、腐蹄病、趾间增生、蹄裂、白线病等11种疾病。 相似文献
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硫酸锌治疗奶牛蹄底溃疡 总被引：4，自引：1，他引：3
蹄病是奶牛的三大疾病之一。临床上通常采用修蹄、浴蹄、局部处理和全身抗菌治疗等措施防治奶牛蹄病 ,但往往不能取得令人满意的效果。 De-mertzis( 1 973)、齐长明等 ( 1 999)曾报道硫酸锌对奶牛腐蹄病的治疗作用 [1～ 2 ] ,为了对此进行进一步的研究 ,我们在贵阳市某奶牛场就硫酸锌对奶牛蹄底溃疡的防治效果进行了观察 ,取得了令人满意的结果。1 材料与方法1 .1 病例及分组 根据蹄底病变和跛行情况对蹄底溃疡作出诊断 ,并对其严重程度给予评分。压诊时蹄底角质发软 ,动物有疼痛反应 ,运步笨拙者定为“ ”,记 1分 ;蹄底角质出现较小缺… 相似文献
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临床上奶牛蹄部疾病的发病率仅次于乳房疾病。奶牛蹄病是影响奶牛健康和生产性能的常见病。加强奶牛蹄部保健,及时防治蹄病可有效地保护牛只健康。 相似文献
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随着奶牛业的发展,奶牛蹄病已成为严重危害奶牛业发展的三大疾病之一。其中创伤性蹄炎又是奶牛蹄病的主要组成部分,它一般包括腐蹄病,蹄叶腐烂,蹄底钉伤,蹄部捻挫等开放性或非开放性的蹄部炎症. 相似文献
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奶牛常见蹄病的病因调查及综合防治 总被引：1，自引：0，他引：1
奶牛蹄病是奶牛业的主要疾病之一，与乳房炎和生殖系统疾病共同构成奶牛饲养业的三大制约因素。奶牛蹄病是奶牛的常见疾病，该病不仅能够影响奶牛的正常生理活动，而且还可以造成奶牛泌乳量的减少，繁殖力降低，淘汰率升高等不良影响，因此，奶牛蹄病所造成的经济损失巨大，危害严重。常见奶牛蹄病主要有蹄叶炎和腐蹄病，若奶牛蹄病得不到及时 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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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
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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