阿勒泰地区疣枝桦育苗技术

疣枝桦是阿勒泰地区广泛分布的乡土树种,文章简要介绍了疣枝桦在阿勒泰地区的分布、生物学特性以及播种繁殖过程,其中包括采种、种子处理、播种前的整地、播种、苗期管理等。文章阐述了疣枝桦育苗技术措施,在生产实践中具有较强的可操作性。     

工厂化水产养殖水质预测预警系统的设计

在对养殖水质需求分析的基础上,设计了一种水质在线实时预测预警系统。该系统具有以下功能:水质实时信息和预测信息的查询、水质预警、水质预警设置和用户管理。在多媒体可视化界面的引导下,信息操作人员可以根据养殖场的实际情况,进行各种预警指标的设定和预警方式的设置。该系统较好地解决了工厂化养殖过程中水质监测预警问题,方便了用户对养殖用水水质的监控和管理。     

Leucoencephalomyelopathy in Australian Rottweiler dogs

Clinical and pathological studies of a neurological disorder of 3 adult Rottweiler dogs are described. Dogs developed proprioceptive losses involving the limbs, leading to progressively worsening ataxia and hypermetria. Blood and CSF fluid analyses were normal and radiographs and myelograms showed no compressive lesions of the spinal cord. At necropsy, severe demyelination of the dorsal and lateral funiculi of the cervical spinal cord was visible grossly. Microscopically there was more extensive, symmetrical involvement of the spinal cord and brain than was apparent grossly, with demyelination of white matter tracts and sparing of axons in affected areas. These changes were considered diagnostic for leucoencephalomyelopathy. This condition has not been previously reported in Australia, and is probably transmitted genetically, presumably as an autosomal recessive trait.     

内蒙古镶黄旗草原生态环境退化原因及可持续发展

以内蒙古自治区草原生态环境严重恶化、经济落后的镶黄旗为研究对象，通过对制约镶黄旗草原生态系统可持续发展的因素进行分析，并结合镶黄旗实际情况，提出适合该区域草原生态环境及经济可持续发展的思路和对策。     

Ground water as a silica source for diatom production in a precipitation-dominated lake

The short-term, seasonal input of ground water to a small, precipitation-dominated oligotrophic lake in northern Wisconsin amounts to less than 10 percent of the annual water budget of the lake but accounts for nearly all the external silica loading. Silica is a necessary nutrient for diatoms. A large spring diatom bloom occurs coincident with high silica inputs from ground water when other possible silica sources are low. The mass budgets of ground water and silica in the lake system demonstrate the importance of ground-water solute inputs to the lake.     

奶牛隐性乳房炎的研究进展

奶牛乳房炎是奶牛常见、多发的疾病之一,严重制约着奶牛养殖业的发展,文章对奶牛乳房炎的病因、发病机理、临床症状、诊断方法及防治措施等进行了综述,这将对内蒙古自治区奶牛养殖业的发展产生积极影响.     

Haemangiosarcoma in two full sibling American Quarter Horse geldings

This case report describes two full sibling gelding American Quarter Horses that presented separately for evaluation of an external mass (Case 1) and signs of colic and epistaxis (Case 2). The horses had the same owner and resided on the same property for the majority of their lives. Both horses were definitively or presumptively diagnosed antemortem with haemangiosarcoma, and on necropsy, multicentric (Case 1) and primary renal (Case 2) haemangiosarcoma were confirmed. A unique finding on necropsy was extensive bilateral renal involvement. Due to the low incidence of haemangiosarcoma in horses, the unique organ involvement and common ancestry of these two horses, a genetic cause is suspected.     

华北土石山区森林枯落物与土壤水文效应研究

以河北省易县崇陵小流域3种不同林分的枯落物层和土壤层为研究对象,对其水文效应进行初步研究。结果表明:3种林分枯落物蓄积量差异较大,侧柏枯落物蓄积量最大,高达57.9t/hm2,油松枯落物蓄积量次之,为29.8t/hm2,刺槐枯落物蓄积量最小,是28.7t/hm2;3种林分枯落物中,侧柏林的枯落物持水能力最强,为114.5t/hm2,油松林的枯落物持最小,仅为60.1t/hm2;3种林分下土壤的平均容重和总孔隙度差别不大,容重的变化范围在1.46~1.66g/cm3;总孔隙度均偏低,具体表现为:侧柏(30.86%)油松(29.31%)刺槐(27.1%);3种林分林下土壤持水能力有所差异,表现为:侧柏油松刺槐。土壤持水能力与各林分林下土壤的孔隙度大小呈正相关,即土壤孔隙度越大,土壤的持水能力越强;3种林分的土壤稳渗速率相差较大,表现为:刺槐(10.50mm/min)油松(2.80mm/min)侧柏(0.80mm/min)。     

西南矮马矮小性状基因SHOX的克隆测序和多态性研究

本研究首次克隆出西南马矮小性状基因完整第二外显子序列,GenBank登录号为EU556739;通过PCR-SSCP方法对8个品种150匹马的该序列做了多态性分析,在P2位点上268处有1个G→A的突变,和431处有1个T→G的突变导致了等位基因B变为等位基因A.该位点除云南文山马(WS)的优势基因型和优势等位基因分别为AB型和B外,其余类群马均为BB型和B.云南丘北马(QB)、云南文山马(WS)、云南大理马(DL)、建昌马(JC)和设特兰马(ST)在P2位点上处于Hardy-Weinberg平衡状态.