藿香正气液治疗驴驹腹泻

2017年7月,内蒙古赤峰某规模化养驴场因天气骤变而发生12头1月龄内驴驹腹泻病情,发病率达40%。经临床辨证论治,确诊为湿热阻遏脾胃、运化不畅所致腹泻,运用藿香正气液灌服,治疗效果显著,值得兽医临床借鉴和推广。     

藏山羊生态地理分布及其生态类型

采用实地调查及生态地理比较法等方法研究表明，藏山羊生产区有藏山羊７２５．３万余只，约分布在北纬２６°～３６°（东经７５°～１０４°）之间的生态地理区，以我国青藏高原为分布中心。藏山羊有两个生态类型（即高原型和山谷型）。两个生态类型藏山羊分布地区的自然生态环境，羊的体格、毛被特征、解剖特征、血液生理指标及生化遗传标记等方面均有差异，可按不同的生态类型进行开发利用。     

褐飞虱对吡虫啉、噻嗪酮和氟虫腈的抗陛监测

2005年10月至2007年10月,用稻茎浸渍法测定12个褐飞虱种群对吡虫啉、噻嗪酮和氟虫腈的敏感性。结果表明：12个褐飞虱种群对吡虫啉均达高或极高水平抗性;除2005年南宁、韶关和阳江,2006年阳江及2007年永州5个褐飞虱种群对噻嗪酮仍处于敏感水平外,其余种群处于敏感性降低或达到低水平抗性;而2006年阳江褐飞虱种群对氟虫腈处于敏感性降低阶段,其余的8个种群均达到了低或中等水平抗性。     

Effect of protease supplementation on apparent ileal crude protein and amino acid digestibility of over-processed soybean meals in broilersOA

Background: Nutritional value of proteins in feed ingredients can be negatively affected by hydrothermal processing, which causes large variation in the bioavailability of amino acids(AA) and negatively affects animal productive performance. Supplementation of exogenous proteases could increase the rate of digestion of damaged proteins, thereby increasing overall AA digestibility and bioavailability. The aim was to determine the effect of exogenous protease supplementation on the apparent ileal ...     

Avian brood parasitism — a growing research area in behavioral ecology (part Ⅱ)

正We are pleased to publish the second special issue on avian brood parasitism and to be responsible guest editors for the two special issues of Chinese Birds (Vol. 3, No. 4, 2012 and Vol. 4, No. 1, 2013), entitled "Avian Brood Parasitism - A Growing Research Area in Behavioral Ecology". The first issue was published in December 2012. The goal of the two special issues is to publish accumulated knowledge and some of the recent developments in     

植物生长调节剂在杧果生产中的应用

植物生长调节剂在杧果生产中具有调节花期,提高开花质量和座果率,改善果实外观,提高果实品质,延长果实储藏期及防治病虫害的作用,在杧果生产中的应用也逐年增多,但在使用中存在药剂残留,使用技术难以精准把握及过分依赖植物生长调节剂的问题。建议在杧果生产中制订出科学合理的技术规范,加强对杧果生理生化机理的研究,筛选出适用于杧果的植物生长调节剂新产品,同时加强农民种植技术培训,使植物生长调节剂在杧果生产上安全使用,更好服务于杧果生产。     

Comparison of diagnostics techniques in an outbreak of infectious laryngotracheitis from meat chickens

Various diagnostics techniques were compared for their ability to detect infectious laryngotracheitis (ILT) during an outbreak in chickens aged between 4 and 21 wk. Gross lesions ranged from excess mucus to accumulation of fibrinonecrotic exudate in the larynx and trachea. Syncytial cells with intranuclear inclusion bodies were found in sinus, conjunctiva, larynx, trachea, lung, and air sac. Virus isolation in chicken embryos was attempted in every case. Negative-stain electron microscopy detected herpesvirus in only 6% of the cases. Yet, isolation of ILT virus in the chorioallantoic membrane was presumed by histology in >20% of the samples and confirmed by fluorescent antibody (FA) in 35% of the embryos inoculated with conjunctivas or tracheas from affected birds. Overall, results from histology and FA tests were highly correlated. FA test has the advantage over histology of being diagnostically specific for ILT virus. Polymerase chain reaction was the most sensitive test and detected the viral DNA even in cases where histology and FA were negative. ILT virus DNA was quantified by real-time polymerase chain reaction (Re-Ti ILTV). Histologic and FA results from larynx and trachea were negative if the concentration of the viral DNA was < or =4 of log10. A viral DNA concentration higher than log10 4, as determined by Re-Ti ILTV, was required for clinical ILT to be manifested.     

Evolution of wheat architecture,physiology, and metabolism during domestication and further cultivation: Lessons for crop improvement

In recent decades, genetic advances in yield improvement in the major cereal crops, including wheat, has stagnated or proceeded at a slower rate than is required to meet future global food demand, particularly in the face of climate change. To reverse this situation, and in view of the future climate scenario, there is a need to increase the genetic diversity of wheat to increase its productivity, quality, stability, and adaptation to local agro-environments. The abundant genetic resources and l...     

《〈蜜蜂饲养原理与方法〉的问与答》继往开来（18）

<正>（续《蜜蜂杂志》 2022年第4期）李老师：您好！我是湖南一位“九○后”年轻的养蜂人,喜欢中蜂,已有9年养蜂经历,从当初传统土养到意标再到现在的GN。如果养蜂有等级,那么我认为依次排列可以是：新手,学徒,师傅,大师,一代宗师。“十年磨一剑”,我从新手“磨”到学徒了。2年前,我偶然在我师傅那儿看到龚凫羌教授的《蜜蜂饲养原理与方法》一书,才知道有GN箱这种蜂箱。全新的理念与技术,它一下就吸住了我的眼球,引我入胜,原来“天外有天人外有人”,我如获至宝。那时龚教授已去世,我不知道宁老师正在传承讲授龚氏蜂学精髓,没能参加全国养蜂提高班速成。