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犬阴道出血在宠物临床上并不多见,但也时有发生,给居室里饲养爱犬的人带来很大麻烦。犬阴道出血可分为发情前期延长、发情期延长、阴道损伤、产后母体胎盘坏死和产后子宫出血。本文系统地对各种情况的犬阴道出血的病因、症状、诊断和治疗措施进行了分析和描述,并就有关问题进行了讨论。 相似文献
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犬膀胱尿道结石手术诊疗报告 总被引:2,自引:0,他引:2
<正> 犬膀胱尿道结石是引起犬排尿障碍最严重的疾病之一。自1994年以来,我校动物医院共收治此类病例54例,经手术治疗后均已康复,但部分病例在短时间内复发。为此,我们对复发的病例进行走访,并改进诊疗方案,取得了良好效果。1 症状 雄性犬尿道结石主要症状为排尿困难、尿频、尿血;病犬不断出现蹲坐式、努啧、呻吟;早期能排出少量尿液,以后完全不能排出。患大腹胀、痛苦,最终因膀胱破裂出现并发症而死亡。雌性大多为膀胱结石,表现为尿频、排尿带血,病程较长。个别病例在尿道阻塞时也表现为雄性患犬的临床症状。2 诊断 根据临床症状及发病史可作出初步诊断。对雄性犬确诊采用探诊法,取一次性输液管的前端细管,剪去针头,外涂石蜡油,从尿道口插入;如阻塞不通,再用平头金属探 相似文献
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A zooxanthellae-free soft coral from the Red Sea feeds almost exclusively on phytoplankton, a mode of nutrition so far unknown for corals. Herbivory was also found in three other azooxanthellate soft corals. In tropical oligotrophic waters, phytoplankton biomass density may be an order of magnitude higher than that of zooplankton. Use of this resource allows these azooxanthellate cnidarians to be highly productive in flow-exposed oligotrophic reef waters. 相似文献
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Some of the most remarkable fossils preserve cellular details of soft tissues. In many of these, the tissues have been replaced by calcium phosphate. This process has been assumed to require elevated concentrations of phosphate in sediment pore waters. In decay experiments modern shrimps became partially mineralized in amorphous calcium phosphate, preserving cellular details of muscle tissue, particularly in a system closed to oxygen. The source for the formation of calcium phosphate was the shrimp itself. Mineralization, which was accompanied by a drop in pH, commenced within 2 weeks and increased in extent for at least 4 to 8 weeks. This mechanism halts the normal loss of detail of soft-tissue morphology before fossilization. Similar closed conditions would prevail where organisms are rapidly overgrown by microbial mats. 相似文献
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