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2016年11月,邵武市拿口镇庄上村养殖户何某饲养的1头5岁荷斯坦乳牛出现胎衣不下并发产后瘫痪,经诊治取得良好效果. 相似文献
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[目的]比较娟姗牛和荷斯坦牛在养殖过程中的发病情况。[方法]收集、整理鹤庆县欧亚牧场2021年成年母牛发病率较高的8 种疾病和犊牛发病率较高的3 种疾病的月报表数据,用SPSS软件对试验数据进行统计分析。[结果]娟姗牛酮病、产后瘫痪和前胃弛缓的年平均发病率与荷斯坦牛无显著差异（P>0.05）,真胃移位、子宫炎、胎衣不下、乳房炎和肢蹄病的年平均发病率极显著低于荷斯坦牛（P<0.01）。娟姗牛犊牛肺炎、感冒年平均发病率与荷斯坦牛无显著差异（P>0.05）,而犊牛肺炎年平均发病率显著低于荷斯坦牛（P<0.05）。[结论]同等饲养管理条件下,娟姗牛抗病力较荷斯坦牛强。 相似文献
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家畜胎衣不下，是影响家畜繁殖的常见病。各种家畜均可发生，猪的发病率可达5％，其中以饲养管理不当、有生殖道疾病的舍饲乳牛多见，有的地区胎衣不下约占健康分娩牛的10％，个别乳牛场的乳牛平均四五胎就被淘汰，其中大多数的不孕是胎衣不下引起的了宫内膜炎所导致。为了使胎衣脱落，不少畜主往往在露出的胎衣上栓一较重的物体(砖头、旧鞋底等)。这种方法极不可取，由于胎衣的血管及其本身扭在一起成为硬索，常将阴道底壁黏膜勒伤，还可能引起子宫内翻和脱出。 相似文献
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奶牛产前补硒和维生素E预防胎衣不下的试验 总被引：3，自引：0，他引：3
张照喜 《兽药与饲料添加剂》2002,7(6):16-17
在缺硒地区，对98头荷斯坦奶牛进行了产前补硒和VE预防胎衣不下的对比试验。结果表明：产前30天补硒和VE的试验组，奶牛胎衣不下发病率8.3%，未补硒和VE的对照组，奶牛胎衣不下发病率18.4%。试验组比对照降低发病率10.1个百分点，差异显著（P＜0.05)。 相似文献
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<正> 牛胎衣不下是一种常见的产科疾病。乳牛胎衣不下更为常见,发病率约占健康分娩牛的10～15%,给乳牛饲养业带来很大损失。86年来,笔者在我县奶牛基地采用下列综合防治措施,收到明显效果。乳牛胎衣不下发病率由原来的11.2%下降到3.5%;治愈率由原来的76.5%提高到96.8%。现介绍如下: 相似文献
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奶牛产前补硒和维生素E预防胎衣不下试验 总被引：3，自引：0，他引：3
在缺硒地区 ,对 98头荷斯坦奶牛进行了产前补硒和VE预防胎衣不下的对比试验。结果表明 ,产前 3 0天补硒和VE的试验组 ,奶牛胎衣不下发病率为 8.3 % ,未补硒和VE的对照组 ,奶牛胎衣不下发病率为 18.4%。试验组比对照组降低发病率 10 .1个百分点 ,差异显著 (P <0 .0 5 )。 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