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旋毛虫死活快速鉴别的实验研究 总被引：8，自引：0，他引：8
为了寻找快速鉴别旋毛虫死活的染色方法。用0．03％美蓝、美蓝-伊红-硼砂染液(M．E．B)和1％中性红3种染液，对死或活旋毛虫幼虫和成虫进行染色。结果3种染液均能使死亡旋毛虫幼虫在1分钟内着色，活虫则不着色。3种染液对旋毛虫死、活成虫均不着色。结论认为3种染液染色均可快速鉴别旋毛虫幼虫死活。 相似文献
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高晓霞 《上海畜牧兽医通讯》2014,(4):65-65
<正>精子活率的检测是精液品质检测的一项重要内容,活率的高低直接反映了精子质量和精子的生存能力,精子活率的降低将明显影响精子的受精能力。伊红-苯胺黑染色法和中性红染色法计算精子活率,其区别在于伊红Y为酸性染料,带有阴离子,可与带有阳离子的物质结合。死精子的细胞膜受到损伤,能渗透到精子内部与阳离子结合而呈红色;活精子细胞膜完整,伊红Y不能渗入细胞内而不着色。而中性红为水溶性染料,能通过活精子的 相似文献
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用台盼兰—姬姆萨染色检测家畜精子顶导反应的研究 总被引：1，自引：0，他引：1
本文探讨了用台盼兰—姬姆萨染色检测家畜精子顶体反应的可行性。用肝素或钙离子载体诱发精子顶体反应。根据染色结果将精子分为四类:a)核后帽部不着色或淡青色,顶体不着色或部分紫红色(有顶体反应活精子);b)核后帽部暗青色.顶体部不着色或部分暗红色(有顶体反应死精子);c)核后帽部不着色或淡青色,顶体部紫红色(无顶体反应活精子);d)核后帽部暗青色,顶体部暗紫红色(无顶体反应死精子)。有顶体反应活精子百分率与仓鼠卵穿透率呈强正相关。从而证明台盼兰—姬姆萨染色是检测家畜精子顶体反应的有效手段,并能预测获能处理后精子的受精能力。 相似文献
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<正> 1.材料与方法①精液样本:中国荷斯坦牛颗粒冻精(山西省种牛站)。②染色原理:利用活精子对特定染料不着色而死精子着色的特点来区分死精子和活精子,从而得出存活率指标。通过油镜检精查子的形态和顶体,统计出畸形率和顶体完整率指标。③染色试剂:刚果红、苯胺兰、伊红、美兰、10%葡萄糖、柠檬酸钠、姬姆萨染液(姬姆萨原液:磷酸缓冲液:蒸馏水=2:3:5)、甲醇。④制片方法:先将冻精用2.9%的柠檬酸钠解冻,并置于37℃温度下,孵育2小时染片。方法1(常规染色法):(1)存活率:采用伊红法,取精液和5%伊红溶液各一滴,置于清洁载玻片一端,迅速混合均匀,制成抹片,在400～600倍显微镜下观察。 相似文献
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不同常温保存稀释液对猪精液保存效果的影响 总被引：1，自引：0，他引：1
本研究利用3种不同的常温保存稀释液对猪精液进行常温保存,测定了精子活率、有效存活时间、生存指数、pH值以及总抗氧化能力(T-AOC)和丙二醛(MDA)活性。结果表明:3号稀释液稀释后精子活率在第3天和第5天均显著高于其他2种稀释液(P<0.05);精子有效存活时间和生存指数显著高于2号稀释液(P<0.05);pH值在精液稀释后的第4天显著高于2号稀释液(P<0.05)。精子T-AOC在第3天和第4天显著高于1号稀释液(P<0.05),但与2号稀释液差异不显著(P>0.05);3种稀释液之间精子MDA变化差异不显著(P>0.05)。因此,3号稀释液对精子的保存效果最好,有利于猪精液的常温保存。 相似文献
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为了研究添加胆固醇与β-环糊精的包合物(CLC)对荷斯坦牛冷冻精子品质(AR)的影响,试验分不同剂量CLC组和对照组,分别测定牛冻精的精子活率、精子顶体反应(AR)并进行比较。结果:添加1.5 mg CLC冷冻后活率最高[(60.4±7.38)%,P<0.05];孵育时间对冷冻后精子活率影响显著(P<0.05),添加1.5 mg CLC孵育15 min精子活率显著高于对照组(P<0.05);精子在BO液孵育15,30,45和60 min的酸性磷酸酶(ACP)吸光度值,1.5 mg CLC组与对照组比较差异都极显著(P<0.01)。试验证实,CLC可提高牛冷冻精子的活率,可用于牛精子的冷冻保存。 相似文献
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《黑龙江畜牧兽医》2020,(11)
为了建立一种操作简单、结果直观、准确稳定的绵羊消化道线虫幼虫活力检测方法,试验采用亚甲基蓝(C_(16)H_(18)ClSN_3,MB)、台盼蓝(C_(34)H_(24)N_6Na_4O_(14)S_4,TB)、龙胆紫(C_(25)H_(30)ClN_3,GV)三种不同性质的鉴别染色剂对在含有0μg/mL、0.1μg/mL、0.2μg/mL、0.3μg/mL丙硫咪唑培养液中培养12 h的幼虫进行鉴别染色,观察和记录亚甲基蓝、台盼蓝、龙胆紫对低活力幼虫、死亡幼虫和高活力幼虫的染色结果,并对比分析染色区别。结果表明:亚甲基蓝染色后的低活力或死亡幼虫呈淡蓝色或蓝色,高活力幼虫为无色,且随着丙硫咪唑浓度的升高幼虫染色率也随之升高,分别为1.14%、15.74%、33.99%、44.69%;而用台盼蓝、龙胆紫染色后不同活力幼虫无明显区别。说明可以根据亚甲基蓝染色法的染色效果直观鉴别体外培养的消化道线虫幼虫活力,有效避免了如主观判断差异、结果不稳定、判断过程复杂等弊端,有望将其用于线虫耐药性检测,并在生产实践中推广应用。 相似文献
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分别采用Giemsa染色法、曙红染色法对藏獒冷冻精液涂片染色,以检查精子畸形率.结果表明,曙红染色法对藏獒精子头部染色适中,头部轮廓清晰,顶脊清楚,项体明显,中段和尾部畸形检查清晰;两种染色方法检测的精子畸形率比较,差异不显著(P>0.05).由试验可知,曙红染色液配制简便,可作为检测藏獒精子畸形与否的优选方法. 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