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狗是人类的朋友,与人类关系密切,尤其近年来,饲养宠物犬的家庭增多了,随之而来的是对人体感染犬的寄生虫病的危险也增加了.为了保护人们和犬的健康,有必要了解一些犬的寄生虫病,寄生虫都有一定的潜伏期,在潜伏期阶段,狗通常不会有太明显的反应,因此也非常容易被忽略,错过最佳的治疗阶段,本文总结了犬常见寄生虫的症状和治疗,提醒爱好养犬的人们,犬身上的寄生虫病不容忽视,需要大家共同来注意. 相似文献
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犬与人类历史的交点
之前,在四川省成都市武侯祠博物馆曾有过"低徊入衣裾——狗与汉晋生活特展",精选全国多家博物馆、数百幅神采各异的以犬为题材的文物图片相约相聚,展现了在漫漫岁月中,犬与人类相依相伴的过程,表达了人们对美好生活的期许. 相似文献
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人类与犬的友好渊源可以追溯到1．5万年前,漫长的岁月中,从原始人最早用犬狩猎到现在的警用犬、导盲犬、陪护犬处处处都有犬的身影,犬早已成为我们人类的忠实伙伴。但人们对犬的行为理解还不够多。就人与犬比较而言,无论形体感觉和生活方式都不同。 相似文献
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人类与犬的友好渊源可以追溯到1.5万年前,漫长的岁月中,从原始人最早用犬狩猎到现在的警用犬、导盲犬、陪护犬处处处都有犬的身影,犬早已成为我们人类的忠实伙伴。但人们对犬的行为理解还不够多。就人与犬比较而言,无论形体感觉和生活方式都不同。人用二只脚站立,用手使用工具,而犬则用四条腿奔跑,以牙齿为武器; 相似文献
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Evidence for the non-involvement of the uterus in the lifespan of the corpus luteum in the cyclic dog 总被引：1，自引：0，他引：1
Progesterone levels in peripheral blood of dogs were analysed during the cycle in which hysterectomy (n = 5) or sham surgery (n = 3) was performed as well as during the cycle of dogs (n = 5) hysterectomized at least one year prior to this study; the data were compared with the findings in control dogs (n = 3). The averages of the duration of the luteal period observed in the three experimental groups were not significantly different from those of control dogs. Immediately after surgery, the progesterone level decreased from 25 to 50% of the presurgical level, but returned to presurgical level in about four days. Prolactin levels were elevated for about 30 h after surgery. Nevertheless, the averages of the mean prolactin levels for each animal during the luteal period of the experimental groups were not significantly different from those of control dogs. It is concluded that in the dog, the uterus is not involved in the lifespan of the cyclic corpus luteum. 相似文献
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Meschan EM Peham C Schobesberger H Licka TF 《Veterinary journal (London, England : 1997)》2007,173(3):578-584
As there is no statistical evidence that saddle fit influences the load exerted on a horse's back, this study was performed to assess the hypothesis that the width of the tree significantly alters the pressure distribution on the back beneath the saddle. Nineteen sound horses were ridden at walk and trot on a treadmill with three saddles differing only in tree width. Kinetic data were recorded by a sensor mat. A minimum of 14 motion cycles were used in each trial. The saddles were classified into four groups depending on fit. For each horse, the saddle with the lowest overall force (LOF) was determined. Saddles were classified as "too-narrow" if they were one size (2 cm) narrower than the LOF saddle, and "too-wide" if they were one size (2 cm) wider than the LOF saddle. Saddles two sizes wider than LOF saddles were classified as "very-wide". In the group of narrow saddles, the pressure in the caudal third (walk 0.63 N/cm(2)+/-0.10; trot 1.08 N/cm(2)+/-0.26) was significantly higher compared to the LOF saddles (walk 0.50 N/cm(2)+/-0.09; trot 0.86 N/cm(2)+/-0.28). In the middle transversal third, the pressure of the wide saddles (walk 0.73 N/cm(2)+/-0.06; trot 1.52 N/cm(2)+/-0.19) and very-wide saddles (walk 0.77 N/cm(2)+/-0.06; trot 1.57 N/cm(2)+/-0.19) was significantly higher compared to LOF saddles (walk 0.65 N/cm(2)+/-0.10/ 0.63 N/cm(2)+/-0.11; trot 1.33 N/cm(2)+/-0.22/1.27 N/cm(2)+/-0.20). This study demonstrates that the load under poorly fitting saddles is distributed over a smaller area than under properly fitting saddles, leading to potentially harmful pressures peaks. 相似文献
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嗅源是军犬嗅觉作业训练的依据.军犬鉴别中嗅源能力的培养在整个鉴别训练中占有重要地位,关系到鉴别训练的成败和鉴别能力的提高.所以,军犬在嗅认嗅源时必须按照训犬员的指令充分、细致地感受嗅源气味,并且对嗅源气味产生兴奋反应.如何培养军犬充分嗅认嗅源以及及时解决嗅认过程中出现的问题,成为我们进行鉴别训练的关键.…… 相似文献
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