Owner Compliance to an Environmental Management Protocol for Severe Equine Asthma Syndrome

Severe equine asthma (SEA) syndrome is a chronic recurrent respiratory disease, common among adult horses. The disease occurs in genetically susceptible individuals after their exposure to organic dust. Thus, environmental management has proved essential in controlling airway challenge and disease exacerbation. This is a demanding process that can only be achieved through the horse owners’ cooperation. One year after initial diagnosis of SEA in a group of 39 horses, owner compliance to an environmental management protocol was evaluated. The overall compliance to the protocol was poor and the horses’ clinical health and need for pharmacological management was related to the successful implementation of the environmental recommendations provided on disease diagnosis.     

Evaluation of proline analysis and chlorophyll fluorescence quenching measurements as drought tolerance indicators in durum wheat (Triticum turgidum L. var. durum)

Summary The possibility of using proline accumulation and fluorescence inhibition as predictive tests for drought tolerance in durum wheat has been investigated. The drought susceptibility of 25 genotypes was evaluated by comparing yields and yield components in irrigated and non irrigated conditions in the field. A drought susceptibility index (DSI) was calculated based on yields from irrigated and dry treatments and compared with the results obtained using the two physiological criteria. Proline accumulation and chlorophyll fluorescence inhibition were found to be significantly and negatively correlated with DSI of grain yield, biological yield, and thousand kernel weight, and tiller index. The use of both criteria for breeding durum wheat in Mediterranean dryland is discussed.     

附红细胞体及附红细胞体病的研究现状和展望

根据笔者在上海首次在奶牛、仔猪和犬中发现附红细胞体病的病原体及参考其他文献,本文综述了该病的病原体、流行病学、临床症状、病理、诊断和防治等生物学特征。对该病的研究现状和发展趋势也作了一一论述。     

饲粮脂肪水平对生长鸡血液生化指标的影响

本试验观察了脂肪水平对生长鸡(0～4周龄)4种血液成分的影响.结果表明,对照组较低的采食量导致了较低的体重。除4%脂肪饲粮的总脂和胆固醇低于6%脂肪饲粮外,饲粮能量水平基本相同的情况下,生长蛋鸡采食后2h 的血清总脂、胆固醇、血糖及脂蛋白的浓度不受饲粮脂肪水平的影响.     

Threshold criteria for heavy metals in the soils of hazard-free dry fruit production regions of China

Determination of proper threshold criteria for heavy metals in soils is an important basis for hazard-free dry fruit production in China. Based on the detection of heavy metal contents in soils in this study, it is initially concluded that the soils for dry fruit production in China are suitable for hazard-free growing. Moreover, the soil safety qualification for dry fruit production is much better than that in some developed countries or regions, which might help our production have a competitive advantage on the international market. However, soil Cr contents in the country are slightly higher, so that it is necessary to take steps to control any contamination during the whole chain of production. The following threshold criteria for heavy metals in soils is suggested according to physical, ecological and economical considerations: Hg 0.15 mg/kg; As 20 mg/kg; Pb 50 mg/kg; Cd 0.30 mg/kg and Gr 200 mg/kg. Translated from Acta Pedologica Sinica, 2005, 42(1): 153–155 [译自: 土壤学报]     

台东木坑溪集水区潜在崩塌评估准则之建立

 木坑溪集水区位于台东纵谷,为利吉层泥岩之代表地区,地质复杂,地层脆弱。该文依调查之地形、地质与土地利用现况等条件,参考相关学者对于潜在崩塌地评估之论述,进行访谈问卷之设计与调查统计,并作为研究之评估准则。研究结果得知,台东木坑溪集水区现有崩塌地之崩塌危险指数均属于危险等级,不宜随意开发利用。在进行问卷访谈时,区位因子并未被多数受访者所认同,然而现场调查结果却发现多数之崩塌其发生均与区位因子有相当之关联性,因此,该项目因子值得后续研究探讨。由于研究范围的限定,使得某些参数值并无太大差异,若将研究调查范围扩大,将会使得立地条件之影响更为显着。     

一种治疗奶牛阴道炎症微生态制剂的临床药效学研究

为检验约氏乳杆菌SQ0048菌株所制备的微生态制剂对临床型奶牛阴道炎症的治疗作用,将其应用于患有阴道炎的病牛体内,利用临床兽医学方法观察给药前后患牛的临床症状,采用变性梯度凝胶电泳法检测给药前后患牛阴道内的微生物菌群种属,使用酶联免疫吸附技术检测给药前后患牛血清内细胞因子分泌量。结果显示,此微生态制剂不仅可以缓解临床奶牛阴道炎性症状,提高发情率及受胎率,还可以减少或杀灭阴道内的利氏卟啉单胞菌、铜绿假单胞菌、化脓隐秘杆菌及链球菌等,增加约氏乳杆菌SQ0048菌株及谷氨酸棒状杆菌的数量,改善阴道微生态环境,维持阴道的微生态平衡;同时给药后患牛血清中IL-1β、IL-6、IFN-α、TNF-α分泌量显著低于给药前,而IL-10分泌量则显著高于给药前,具有一定抑制炎症的生物学功能。     

闽东桉树品系造林效果综合评价研究

选择福建省有一定栽培面积的7个桉树品系,在永泰县的三个海拔带分别采用随机区组,3次重复的试验设计,运用多目标决策原理,进行综合评价研究,结果表明在永泰山地造林综合指标表现最好的为尾赤桉201;其次为尾园桉184、尾巨桉3229、赤桉9号、巨尾桉C6、;比较差的为巨桉A5、柳窿桉9号。在本地区,包括整个闽东Ⅱ08桉树引种小区,发展桉树宜提倡使用尾赤桉201。     

全国草地类自然保护区的成效评估指标

在集成分析国内外自然保护区生态保护成效评估研究进展的基础上, 结合DPSIR模型的状态指标集以及我国关于草地生态系统长期获取的资料数据, 坚持最大程度客观地评估我国草地类自然保护区生态保护成效的设计思路和原则, 筛选出既能够反映该自然保护区生态保护效益、又较易获取且国内外相关机构有类似评估标准的15个指标。并尝试结合已有的国家相关技术标准规范和文献研究资料获得各指标的技术规范, 得到反映自然保护区的保护对象、生态功能与环境相互作用等方面的具体参数。实际应用中, 这些指标可根据评估主体、评估目的、评估周期以及已有资料数据等不同进行组合, 从而在一定程度上反映自然保护区生态保护成效。     

人中白药学研究概况

在广泛文献检索的基础上,综述了人中白的成分、功效、临床应用,为其深入开发利用提供参考。