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普通变形杆菌致赤颈袋鼠牙周病的诊治
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作者 化立凡 刘兆阳 +1 位作者 李天平 刘凤军 《现代畜牧兽医》 2022年第6期61-66,共6页
巨足动物进行性牙周病一直是全球圈养巨足动物饲养的难题。通过触诊、视诊以及影像学技术对王城动物园内6只患进行性牙周病的赤颈袋鼠进行疾病发展程度判定;分别采用手术清创治疗、局部性治疗、药物注射全身性治疗以及饲料调整等4种方... 巨足动物进行性牙周病一直是全球圈养巨足动物饲养的难题。通过触诊、视诊以及影像学技术对王城动物园内6只患进行性牙周病的赤颈袋鼠进行疾病发展程度判定;分别采用手术清创治疗、局部性治疗、药物注射全身性治疗以及饲料调整等4种方式对其进行治疗;使用全自动微生物鉴定及药敏检测分析仪,鉴定其致病菌及敏感药物,以期达到降低该病发病率、病死率、复发率的目的。经过诊断,4只赤颈袋鼠为轻症,表现为牙龈溃烂、下臼齿坏死、脱落以及轻度的下唇组织分离等;另外两只袋鼠为重症,表现为下颌瘘道、严重的组织及下臼齿钙化等。经过治疗,5只袋鼠在15 d内痊愈,1只重症原色赤颈袋鼠经治疗无效死亡。根据鉴定,该群赤颈袋鼠巨足动物进行性牙周病的病原菌为普通变形杆菌,该菌对3种抗生素敏感,分别为庆大霉素、亚胺培南和美罗培南;对14种抗生素不敏感;对3种抗生素中介。 展开更多
关键词 赤颈袋鼠 巨足动物进行性牙周病 普通变形杆菌
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Land use and dingo baiting are correlated with the density of kangaroos in rangeland systems
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作者 Stuart J.DAWSON Tracey L.KREPLINS +3 位作者 Malcolm S.KENNEDY Juanita RENWICK Mark A.COWAN Patricia A.FLEMING 《Integrative Zoology》 SCIE CSCD 2023年第2期299-315,共17页
Rangelands worldwide have been subject to broadscale modification,such as widespread predator control,intro-duction of permanent livestock water and altered vegetation to improve grazing.In Australia,these landscape ch... Rangelands worldwide have been subject to broadscale modification,such as widespread predator control,intro-duction of permanent livestock water and altered vegetation to improve grazing.In Australia,these landscape changes have resulted in kangaroos(i.e.large macropods)populations increasing over the past 200 years.Kan-garoos are a key contributor to total grazing pressure and in conjunction with livestock and feral herbivores have been linked to land degradation.We used 22 years of aerial survey data to investigate whether the density of 3 macropod species in the southern rangelands of Western Australia was associated with:(i)land use,including type of livestock,total livestock,density of feral goats,type of land tenure,and kangaroo commercial harvest effort;(ii)predator management,including permitted dingo control effort,estimated dingo abundance,and presence of the State Barrier Fence(a dingo exclusion fence);and(iii)environmental variables:ruggedness,rainfall,fractional cover,and total standing dry matter.Red kangaroos(Osphranter rufus)were most abundant inflat,open vegetation,on pastoral land,where area permitted for dingo control was high,and numbers were positively associated with antecedent rainfall with a 12-month delay.Western grey kangaroos(Macropus fuliginosus)were most abundant onflat,agricultural land,but less abundant in areas with high permitted dingo control.Euros(Osphranter robustus)were most abundant in rugged pastoral land with open vegetation,where permitted dingo control was high.While environmental variables are key drivers of landscape productivity and kangaroo populations,anthropogenic factors such as land use and permitted dingo control are strongly associated with kangaroo abundance. 展开更多
关键词 HERBIVORES livestock macropods OVERGRAZING RANGELANDS total grazing pressure
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Genetic outcomes from the translocations of the critically endangered woylie
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作者 Carlo PACIONI Adrian F. WAYNE Peter B. S. SPENCER 《Current Zoology》 SCIE CAS CSCD 2013年第3期294-310,共17页
Translocations are an important conservation strategy for many species. However simply observing demographic growth of a translocated population is not sufficient to infer species recovery. Adequate genetic representa... Translocations are an important conservation strategy for many species. However simply observing demographic growth of a translocated population is not sufficient to infer species recovery. Adequate genetic representation of the source population(s) and their long-term viability should also be considered. The woylie Bettongia penicillata ogilbyi has been subject to more formal translocations for conservation than any other marsupial that, up until recently, has resulted in one of the most suc- cessful species recoveries in Australia. We used mitochondrial and nuclear DNA markers to assess the genetic outcomes of trans- located woylie populations. These populations have lost genetic variability, differentiated fxom their source population and the supplementation program on two island populations appears to have failed. We discuss the conservation implications that our re- suits have for managing threatened species, outline some general recommendations for the management of present and future translocations and discuss the appropriate sampling design for the establishment of new populations or captive breeding programs that may mitigate the genetic 'erosion' seen in our study species. This research provides some practical outcomes and a pragmatic understanding of translocation biology. The findings are directly applicable to other translocation programs . 展开更多
关键词 Bettongia penicillata macropod TRANSLOCATION Supplementation Microsatellites MTDNA
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