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急性胃扩张是由于动物采食过多和胃后送障碍所引起的胃急剧膨胀。病马伴有中度或剧烈腹痛，肚腹不大，呼吸迫促，胃排空出现障碍，插入胃管即排出大量气体、液体或食糜，病程短、急。按照病因可分为原发性胃扩张和继发性胃扩张。按内容物性状分为食滞性胃扩张、气胀性胃扩张和积液性胃扩张。原发性胃扩张多属气胀性或食滞性的，积液性的甚少。继发性胃扩张大多属于积液性的。本病是常见的真性腹痛病，多发于马和骡，驴较少发生，救治不及时常造成病畜死亡。 相似文献
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《中国畜牧兽医文摘》2016,(4)
<正>马急性胃扩张又称大肚结,是由于采食过多或排泄机能障碍所引起的胃急剧膨胀。按病因分为原发性胃扩张和继发性胃扩张;按内容物性状,分为食滞性、气胀性和积液性胃扩张。多发于马和骡,驴较少发生。临床特征是伴有中度或剧烈腹痛,肚腹不大而呼吸促迫,胃排空障碍。插入胃管,可排出大量酸臭气体及液状食糜(气胀性胃扩张),或排出大量酸臭黄色液体(积液性胃扩张),或排出少量气体及粥状食糜(食滞性胃扩张)。导胃减压后,腹痛即缓和,呼吸亦显平稳。直肠检查在左肾前下方 相似文献
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急性胃扩张,是由于胃排空机能障碍和贪食过多,使胃急剧膨胀而引起的一种急性腹痛病,中兽医称大肚结。临床上以采食后突然发病,经过短促,呈中等或剧烈的腹痛,腹围变化不大而呼吸促迫,以及导胃可排出大量气体、食糜或液体为特征。按发病原因,分为原发性和继发性胃扩张。按胃内容物的性状,又有食滞性、气胀性及液性胃扩张之分。急性胃扩张患犬以运动型的大型犬品种居多,如:德国牧羊犬、罗特怀特犬、多伯曼犬等。这些类型的犬体形矫健,肌肉发达,特别是胸肌丰厚,使得胸深而狭长。临床上,急性胃扩张病例多发生于我国具有炎热天气的南方。但在… 相似文献
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马、骡的急性胃扩张在临床上也是最常见的一种疝痛病。我们医院里的住院马,过去由于饲养管理的不当,发生急性胃扩张也相当多。这里应该指出,医院里所发生的胃扩张都是马,骡根本没有发生过,其中以蒙古马最多。在我们医院里所发生的急性胃扩张,其病性有两种——原发食滞性和原发气胀性。原因有:不是单槽饲养,不定食定量,数马同槽争吃饲料,其中以蒙古马为最明显的 相似文献
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牛瘤胃积食又称急性瘤胃扩张,是反刍动物贪食大量的粗纤维或容易膨胀的饲料引起瘤胃扩张,瘤胃容积增大,内容物停滞或阻塞,以及整个前胃机能障碍,形成脱水和毒血症的一种疾病。1病因1.1原发性瘤胃食滞主要是过食草料造成。如饲喂粗 相似文献
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正马急性胃扩张分为原发性胃扩张和继发性胃扩张。原发性胃扩张主要是因饲喂不定时定量、饥饿贪食过多、饲喂难以消化的饲料及饲喂过量精料后大量饮水或饲喂过量饲料后剧烈运动(使役),胃内容物迅速发酵产生大量气体而引起的急性病,如采食过量的幼嫩青草、青稞或豆科类植物最容易发病。继发性胃扩张主要是由于小肠及胃膨大部堵塞或小肠变位,使得胃内容物迅速发酵而引起发病。现将1例马急性胃扩张的诊治介绍如下,供参考。 相似文献
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兔食滞性胃扩张是兽医临床比较少见的病例，本病在兔的真性疝痛中发病率不高，但发展迅速，如治疗不及时，容易引起胃破裂而造成死亡。笔者应用外科手术方法成功治愈1例。 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