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1.
In the pathological collection of native fauna diseases held at the Taronga Zoo, Sydney, there are materials from about 300 wild, free range brush-tail possums from the Sydney area. Thirty-five of these have neurologic lesions. 相似文献
2.
Kenji KUTARA Sho KADEKARU Reiko SUGISAWA Yumi UNE 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2021,83(6):947
An adult female red deer died of a severe seizure and dysbasia. Postmortem computed tomography (CT) and magnetic resonance imaging (MRI) were performed. On CT, deciduous right maxillary second and third premolar teeth were observed, and the right infraorbital canal was disrupted. MRI showed that the right trigeminal nerve was enlarged and the right subarachnoid cavity was occupied by fluid and gas. On gross examination, the right paranasal sinus, swollen muscles of the orbit and tonsils, right trigeminal nerve, and right cerebrum surface contained a yellowish-white, cheese-like pus. Based on these findings, the deer was believed to have developed pyogenic meningitis caused by a neuropathic infection secondary to periodontogenic paranasal sinusitis. 相似文献
3.
4.
崔雅雄 《甘肃农业大学学报》2003,38(4):411-414
1997~2000年,在甘肃濒危动物研究中心,用高浓度静松灵注射液(10 %)对马鹿、扭角羚、野骆驼进行了麻醉试验,结果显示,在实验用药量0.03 mL/kg(马鹿)、0.004 mL/kg(扭角羚)和0.03 mL/kg(野骆驼)下,肌肉注射给药后,动物在1~5 min出现反应。制动诱导期为:马鹿3~12 min,扭角羚1~5 min,野骆驼5~15 min。麻醉持续时间为马鹿32±7.60 min,扭角羚120±18.44 min,野骆驼28±6.57 min。恢复时间为马鹿3±1.05 min,扭角羚2±0.30 min,野骆驼5±3.18 min。使用后均未出现中毒现象。实验表明,该药对这3种野生动物具有良好的保定效果。 相似文献
5.
Recent research in western North America suggests that open forage areas are a greater limiting factor to mule deer abundance than closed conifer forests. However, much of this work was conducted in ecosystems prone to fire and low snow depths compared to the limits of mule deer range such as the Columbia Mountains, British Columbia, where snow is deep and fires are rare. We used snow track surveys as a measure of habitat use and fecal nitrogen as an index of dietary quality to compare the relative value to mule deer of open deciduous canopies to closed coniferous canopies in a wet ecosystem with deep snow and few fires. Deciduous canopies contain higher levels of understory forage compared to dense coniferous canopies, which are better at intercepting snow. We also evaluated food habits across landscapes with contrasting forest canopies. Results corroborated previous work in that foraging areas such as deciduous stands were strongly selected by deer, despite deeper snow relative to closed coniferous stands. Deer consumed fewer understory shrubs in coniferous-dominated stands, suggesting lower nutritional intake in these stands. Finally, deer appeared to derive a nutritional benefit in landscapes that had a higher proportion of open deciduous canopies, as indexed by fecal nitrogen. However, not all open canopy stands were of equal value to deer – deciduous-dominated stands were selected, whereas clearcuts were avoided. Similarly, not all closed coniferous stands were equally selected: cedar–hemlock stands were avoided whereas Douglas-fir stands were selected and indeed contained the highest proportion of deer tracks. We suggest that winter foraging areas have been underrepresented in management policy in British Columbia, but that snow-interception cover provided by coniferous stands still plays a role in winter deer ecology in deep-snow ecosystems. 相似文献
6.
狍被毛髓质指数在保温和保护功能上的适应性变化 总被引:8,自引:1,他引:8
应用显微测微尺,对狍肩部和前肢部的和立夏被毛进行髓质指数测算,差异显著性检验表明,狍被毛的髓质指数既显著的季节性差异。也存在身体部位差异,即躯干部冬毛的髓质变得极为发达、肢体部冬毛的髓质却显著变细。 相似文献
7.
In a number of countries, tuberculosis (due to infection with Mycobacterium bovis) is a significant health problem of captive deer. This paper describes outbreaks of bovine tuberculosis in sika deer (Cervus nippon) on two farms in Ireland and the methods used to control the disease. On Farm A, infection was first detected during 1993. The infection was eradicated using a programme of test and removal, in association with segregation of young animals. A second outbreak (also due to infection with M. bovis, but a different RFLP profile) was detected in 2002. In the latter outbreak, infection was particularly prevalent in two groups of young deer. M. bovis with the same RFLP profile was also isolated in a badger found dead on the farm. Control was achieved by test and removal in association with herd management changes. In Herd B, infection was first detected in 1995, and subsequently eradicated using test and removal alone. In Herd A, re-infection remains an ongoing risk. Control rather than eradication of infection may more realistic in the short-to medium-term. 相似文献
8.
Sanae ASANO Shoshichi IKEDA Yuzo KUROKAWA Shuhei KANDA Hisao ITABASHI 《Animal Science Journal》2007,78(1):28-33
To investigate seasonal variations in the digestive functions of sika deer, five female sika deer were provided with an amount of alfalfa hay cubes equivalent to voluntary food intake during winter. We measured the rate at which the food passed through the digestive tract, digestibility and rumen fermentation during the summer (August), autumn (November), winter (February) and spring (May). Total mean retention time in the digestive tract during summer and autumn was numerically longer than that in winter and spring, but the difference did not reach significance. Organic matter and fiber were less digestible in summer and autumn than in winter and spring (P < 0.05), whereas the digestibility of the dry matter tended to vary with the seasons (P < 0.1). Ruminal pH values seasonally changed (P < 0.01), and were the lowest in autumn. The concentration of ruminal ammonia‐nitrogen differed significantly among the seasons (P < 0.05), increasing in winter and decreasing during spring and summer. The numbers of protozoa changed significantly among the seasons (P < 0.05), being higher in autumn than in winter and spring, and intermediate in summer. The concentration of total volatile fatty acids was not seasonally affected, but the molar percentages of propionic acid and butyric acid significantly changed according to season (P < 0.05 and P < 0.01, respectively), and the ratio of acetic to propionic acid tended to change with the seasons (P < 0.1). The results of this study suggested that the digestive functions in sika deer, fed a commercial diet at a restricted level, differed notably among the seasons and these variations might partially be due to environmental effects. 相似文献
9.
A. A. Roess A. M. McCollum K. Gruszynski H. Zhao W. Davidson N. Lafon T. Engelmeyer B. Moyer C. Godfrey H. Kilpatrick A. Labonte J. Murphy D. S. Carroll Y. Li I. K. Damon 《Zoonoses and public health》2013,60(8):543-548
In 2008, two deer hunters in Virginia and Connecticut were infected with a unique strain of pseudocowpox virus, a parapoxvirus. To estimate the prevalence of this virus, and in an attempt to define the reservoir, Parapoxvirus surveillance was undertaken between November 2009 and January 2010. 125 samples from four ruminant species (cows, goat, sheep and white‐tailed deer) were collected in Virginia, and nine samples from white‐tailed deer were collected in Connecticut. We found no evidence that the parapoxvirus species that infected the deer hunters is circulating among domesticated ruminants or white‐tailed deer. However, parapoxvirus DNA of a different parapoxvirus species, bovine papular stomatitis virus (BPSV), was detected in 31 samples obtained from asymptomatic cattle in Virginia. Parapoxvirus DNA–positive cattle originated from the same counties indicating probable transmission among animals. Molecular analysis identified BPSV as the parapoxvirus affecting animals. Asymptomatic parapoxvirus infections in livestock, particularly young animals, may be common, and further investigation will inform our knowledge of virus transmission. 相似文献
10.
Hideharu Tsukada Tamaki Kida Miya Kitagawa Tetsuo Suyama Norihiro Shimizu 《Grassland Science》2013,59(3):146-155
Quantitatively estimating herbage damage caused by wild herbivores, such as deer, provides a basis for developing countermeasures designed to prevent the damage. However, a simple and easy way to quantify deer damage has not yet been developed. In this study, we estimated herbage damage caused by sika deer (Cervus nippon) in three meadows of a dairy farm in central Japan during three cutting periods. We then compared the validity of quantitative estimation of herbage damage using three simple methods: by comparing plant height or plant length outside and inside a deer exclosure cage, and by estimating the density of sika deer populations using spotlight census surveys in the meadows. We also examined the effect of the timing of herbage damage (i.e. early, middle and late season) caused by sika deer on a total herbage yield during each cutting period. The decreased plant height outside of a deer exclosure had a significant and unbiased linear relationship with herbage damage caused by sika deer. However, the decreased plant length outside of a deer exclosure had a significant but biased linear relationship with herbage damage caused by sika deer. The required sample size for assessing the difference in plant height outside of a deer exclosure increased when the herbage damage was small. On the other hand, the mean density of sika deer did not have a linear relationship with herbage damage. The timing of herbage damage caused by sika deer did not significantly affect total herbage yield. These results show comparing plant height outside and within a deer exclosure provides a simple and inexpensive quantitative method that can be used to estimate herbage damage caused by sika deer. This simple method, however, can be reliable when the herbage damage is relatively large (e.g. >30%). 相似文献