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排序方式: 共有1034条查询结果,搜索用时 46 毫秒
1.
Hematology and serum biochemistry values are reported for 33 Attwater's prairie chickens (Tympanuchus cupido attwateri) that were captive-reared at the San Antonio Zoo as part of a federal reintroduction program in Texas. Hematologic values include packed cell volume, and total and differential white blood cell counts. The biochemical values include concentrations of serum calcium, total protein, albumin, phosphorus, glucose, uric acid, and cholesterol. Mathematic computation of globulin concentration and albumin: globulin ratios were conducted. Also, determination of the serum activities of creatine kinase and aspartate aminotransferase was done. 相似文献
2.
S K Mikota L Peddie J Peddie R Isaza F Dunker G West W Lindsay R S Larsen M D Salman D Chatterjee J Payeur D Whipple C Thoen D S Davis C Sedgwick R J Montali M Ziccardi J Maslow 《Journal of zoo and wildlife medicine》2001,32(1):1-16
The deaths of two Asian elephants (Elephas maximus) in August 1996 led the United States Department of Agriculture to require the testing and treatment of elephants for tuberculosis. From August 1996 to September 1999. Mycobacterium tuberculosis infection was confirmed by culture in 12 of 118 elephants in six herds. Eight diagnoses were made antemortem on the basis of isolation of M. tuberculosis by culture of trunk wash samples; the remainder (including the initial two) were diagnosed postmortem. We present the case histories, epidemiologic characteristics, diagnostic test results, and therapeutic plans from these six herds. The intradermal tuberculin test, enzyme-linked immunosorbent assay serology, the blood tuberculosis test, and nucleic acid amplification and culture are compared as methods to diagnose M. tuberculosis infection in elephants. 相似文献
3.
Zheng Xiaoxian Liu Donglan College of Forest Resources Environment Beijing Forestry University Beijing P.R.China 《中国林学(英文版)》1996,(1)
该文探讨了不用编制削度表直接建立高精度立木干曲线的方法.当采用干曲线是3次多项式时,通常根据10分法测定树干各部位直径,用最小二乘法求出该方程式的参数.从数学角度,只要知道树干任意3个部位的直径,就可以用最小二乘法或联立方程式求解干曲线参数.本文以樟子松为例,探讨用树干哪3个部位直径拟合的干曲线最接近实际干曲线,为建立立木干曲线提供有效方法.利用9个部位半径(方法Ⅰ)和利用其中3个部位半径(方法Ⅱ,28种组合)分别拟合干曲线,结果表明方法Ⅱ的6种半径组合的精度良好,其中的3种组合,(r1.3,r0.3,r0.7),(r1.3,r0.4,r0.7)和(r1.3,r0.4,r0.8)是拟合现实干曲线的有效方法. 相似文献
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6.
51个木麻黄地理种源对星天牛抗虫序列的调查研究 总被引:7,自引:0,他引:7
本文报道51个木麻黄(Casuarina spp.)地理种源对星天牛(Anoplophora chinensis(Forster))抗性调查和分析的结果。调查获得数据应用IBM—PC计算机进行逐步聚类分析,将51个木麻黄地理种源划分为高感、中抗、高抗和绝抗4个类群,并进行方差分析,结果表明4个类群木麻黄对星天牛的抗性达极显著差异,因此在星天牛发生严重地区可以选择既抗虫、又抗风,生长较好的C_(33)、C_(39)、C_(44)等种源造林。 相似文献
7.
对新疆地区啤酒花上的土耳其斯坦叶螨 Tetranychus turkestani Ugarov et Nik-lski 的生物学、发生特点及防治对策进行了初步探讨。该螨寄丰广,为害啤酒花叶片和球果。在啤酒花的毛蕊期和球果生长期有2个发生高峰。本文以啤酒花越冬期,营养生长期、生殖生长期害螨和天敌发生特点,提出了不同的防治方法和技术关键。 相似文献
8.
WANG Bing ZHAO Guangdong CUI Xianghui BAI XiulanResearch Institute of Forest Ecology. Environment Protection Chinese Academv of Forestry. Beiiins . China 《中国林业科技(英文版)》2002,(4)
Established by the former Ministry of Forestry in 1986, Dagangshan Forest Ecosystem Research Station is one of the 14 national key sites in the field of ecosystem research. In this paper, the basic situation of Dagangshan Forest Ecosystem Station is described, including geographic location, natural conditions, biological resources, research conditions, instruments, achievement, prospects etc. 相似文献
9.
West DM 《New Zealand veterinary journal》1983,31(5):71-74
An outbreak of ovine interdigital dermatitis and foot abscess in which approximately a third of 300 Perendale ram hoggets had acute lameness was investigated. Both foot infections occurred simultaneously in the flock, and ovine interdigital dermatitis preceded the occurrence of foot abscess in seven instances. It was suggested that the behaviour pattern and sexual activity of the young rams predisposed them to ovine interdigital dermatitis and foot abscess. Although no controlled trials were conducted, the lame sheep responded well following the combined therapeutic measures of dry surroundings, formalin footbathing and selected antibiotic therapy. 相似文献
10.
West D 《New Zealand veterinary journal》1983,31(9):152-156
A study was made of various aspects of 53 naturally occurring cases of foot abscess in sheep in New Zealand. Radiographic techniques were used to follow the progress of the lesion and from this it was concluded that foot abscess could be defined as an infection of the distal interphalangeal joint. The term foot abscess was considered preferable to the term "infective bulbar necrosis". The attack rate of foot abscess was reported to be higher for rams than for ewes and the condition was less prevalent during summer. Once infection was established in the distal interphalangeal joint a relatively uniform and thus predictable series of events took place that inevitably resulted in some permanent damage and deformity to the digit. If rupture of the axial collateral ligaments occurred, the joint became unstable and the degree of permanent deformity was greater. Treatment with antibiotics did not appear to markedly affect the progress of the lesion or the outcome, once infection had become established in the joint. Although the prognosis for complete recovery was poor, in most cases the foot healed sufficiently after a period of about two months to allow the animal to walk normally. 相似文献