梅花鹿巴氏杆菌病的诊治

2006年7月14日,临夏州某养殖场饲养的79只梅花鹿鹿群中个别发生一种以咳嗽、呼吸困难、流粘脓性鼻液为主要特征的疫病.发病8只,发病率为10.13%;死亡2只,死亡率为25%,不分年龄大小均发病,但以幼鹿和体弱者为主.     

氧化苦参碱和苦参碱含量在苦参生长发育过程中的动态变化

苦参Sophora flavescens为多年生草本或灌木,其根入药.为了揭示氧化苦参碱(Oxmatrine,OMT)和苦参碱(Matrine,MT)在苦参体内代谢转化规律及两者之间的关系,为人工栽培苦参提供理论依据,运用高效液相色谱(HPLC)技术对苦参根、茎、叶、种子生长发育过程中氧化苦参碱和苦参碱含量动态变化进行了全面的研究.结果表明.根和成熟种子中氧化苦参碱和苦参碱含量最高,苦参碱主要分布在幼嫩的叶和茎中,而在成熟和衰老的叶和茎中苦参碱则转化为较为稳定的氧化苦参碱.在根和种子等贮藏器官中则主要以氧化苦参碱的形式贮存,并且根和种子中氧化苦参碱和苦参碱含量以及相同器官2种生物碱含量变化呈现互补的特点,由此推断,叶中形成的氧化苦参碱和苦参碱在向根和种子运输分配时受其生长竞争的影响,它们之间可以相互转化.     

肉牛舍走向对夏季舍内环境的影响

为了研究肉牛舍走向对舍内环境指标的影响,试验选取2种不同走向的牛舍,测定夏季舍内温度、相对湿度、风速以及二氧化碳、氨气浓度。结果表明:东西走向牛舍内的风速显著高于南北走向牛舍(P<0.05),有效温度及有害气体浓度极显著低于南北走向牛舍(P<0.01),2种牛舍内温度和相对湿度无显著差异(P>0.05)。     

奶牛α_s-酪蛋白多克隆抗体的制备、纯化及鉴定

本试验旨在制备高纯度和特异性的奶牛αs-酪蛋白多克隆抗体,为鉴定奶牛乳腺合成的αs-酪蛋白提供试验材料。选用4只健康新西兰大白兔,每2周免疫1次奶牛αs-酪蛋白,待血清达到抗体效价后,对兔进行颈动脉放血并分离血清,利用饱和硫酸铵法和蛋白A树脂纯化抗体,十二烷基硫酸钠-聚丙烯酰胺凝胶电泳(SDS-PAGE)和免疫印迹(Western-blot)法分别用于鉴定纯化后抗体的纯度和特异性。结果表明,经过饱和硫酸铵法和蛋白A树脂2步纯化后得到了纯度较高的抗体,同时可以特异性结合奶牛αs-酪蛋白。本试验制得的抗体可以用于鉴定奶牛乳腺合成的αs-酪蛋白,为进一步研究奶牛αs-酪蛋白合成的调控提供了有效的科研材料。     

2008～2009年国内外蜂王浆研究概况

对2008～2009年国内外蜂王浆的研究和专利公开情况进行了综述。从年度、地域和研究领域等方面对研究情况进行了统计和比较,就蜂王浆的成分测定、基因与蛋白质组分析、生理药理学功能验证和产业发展等方面的研究成果以及最新专利公开信息和新兴技术的应用情况进行了介绍,并对蜂王浆研究发展的趋势和方向进行了展望。     

山楂叶螨对胡瓜钝绥螨的吸引作用研究

采用两侧吸引作用试验测定天敌胡瓜钝绥螨Amblyseius cucumeris Oudemans在田间对山楂叶螨的搜索和控制能力。结果表明:山楂叶螨不同螨态对胡瓜钝绥螨均有显著的吸引作用,排泄物对胡瓜钝绥螨没有明显的吸引作用。山楂叶螨对胡瓜钝绥螨的这种吸引作用说明胡瓜钝绥螨在田间具有自动搜索山楂叶螨的能力,可用于山楂叶螨的生物防治。     

用前期月环流指数预测新疆棉区稳定≥10℃初日

用新疆22个棉区代表站的日平均气温资料,计算5d滑动稳定≥10℃初日作为棉花播种的农业气象学指标。以前一年3月到当年2月的74项月环流指数为因子,考虑了统计模型中因子与预测量之间相关不稳定性,分别建立了新疆棉区22站稳定≥10℃初日的"滑动相关—逐步回归—集合分析"预测模型。预测2009年全疆大部分棉区稳定≥10℃初日偏早,北疆大部分棉区偏早5d以上。入选新疆各棉区预测模型的前期环流因子中,以副热带环流系统因子为主,其次是高纬度地区极涡环流因子;北疆棉区稳定≥10℃初日的年际变化与前期热带海洋表面温度异常分布关系较密切。对预测结果以及模型的预测(拟合)效果进行检验,2009年的预测结果基本准确,尤其是预测出了北疆大部分棉区异常偏早的趋势,为棉花播种期预测分析提供了有力的技术支持。     

Comprehensive Effects of Temperature and Relative Humidity on Rebar Corrosion in Concrete

The corrosion rate of steel in concrete is highly dependent on the heterogeneous structure of the concrete and the environmental exposure conditions. Temperature and relative humidity are two important environmental factors that simultaneously influence the corrosion process and cannot be separated or isolated from each other. The interaction of temperature and relative humidity for characterizing the corrosion rate has been sufficiently studied. The resules show that the higher the temperature is, the greater the relative humidity is when rebar corrosion rate reaches the max, and as to different relative humidity, the increasing extent of rebar corrosion rate with rise in temperature is different.     

Effect of Dietary Lactobacillus fermentum from Pig on Growth Performance,Nutrient Apparent Digestibility,Faecal Microflora Number and Serum Immune Indices in Weaned Piglets

This experiment was conducted to study the effects of Lactobacillus fermentum on growth performance, nutrient apparent digestibility, faecal microflora number and serum immune indices of weaned piglets.A total of 160 weaned piglets with an average age of (30±2) days and averge body weight of (7.85±0.68) kg were randomly distributed into 4 groups with 4 replicates per group and 10 piglets per replicate feeding basal diet, 0.1%, 0.2%, and 0.3% Lactobacillus fermentum supplementation diets, respectively.The experiment lasted for 35 d.The results showed that, compared with the control group, the average daily gain, the feed conversion ratio, the apparent digestibility of crude protein, calcium and total phosphorusin of Lactobacillus fermentum groups were all increased in varying degrees.The optimum supplemental level of Lactobacillus fermentum should be 0.2%, and at this level, the average daily gain was significantly increased by 8.70% (P<0.05), the F/G was decreased by 4.62% (P<0.05), the apparent digestibility of crude protein, calcium and total phosphorus were significantly increased (P<0.05), the number of faecal E.coli was significantly decreased (P<0.05), and the serum IgG was significantly increased by 8.39% (P<0.05).The results indicated that Lactobacillus fermentum supplementation could improve the immune function, growth performance, the apparent digestibility of crude protein, calcium and total phosphorus and reduce the number of faecal E.coli of weaned piglets.     

樱桃李新品种‘森果红露’

 ‘森果红露’是从青岛胶州新疆野生樱桃李（Prunus cerasifera Ehrh.）种质资源迁地保存圃内的自然授粉实生后代中选育而来。树姿开张,枝条下垂,丰产性强。果实近圆形,平均单果质量18.89 g,最大22.88 g。果皮底色黄色,果面着紫红色,有果粉;果肉黄色,细腻多汁,含可溶性固形物12.0%,总糖127.35 mg · g^-1 FW,总酸4.14 mg · g^-1 FW,酸中带甜,风味独特。在青岛胶州地区8月上旬果实成熟,果实发育期105 d。