体外循环对血液有形成份的影响（附34例观察）

观察３４例心内直视手术体外循环前后对血液有形成份的影响，发现体外循环后血红蛋白、红细胞与血小板有显著降低，而白细胞显著增高，这可能与机械损伤、血液稀释和机体反应有关。因此选用接近人体生理循环的人工心肺机，改进手术吸引装置、缩短体外循环时间及提高手术质量，可能有助于减少体外循环对血液有形成份的影响。     

从牛胃中分离微生物发酵秸秆的研究

试验目的主要是模拟反刍动物发酵作物秸秆多元菌,提高作物秸秆的利用率。通过对稻草秸秆的微贮发酵,提高秸秆的适口性和消化率,而且经过微贮的秸秆饲料成本低、污染少、效率高、经济、安全且利于工业化生产。与单纯饲喂秸秆饲料或饲喂氨化饲料相比,微贮饲料可分别使肉牛增质量提高22.59和8.64kg,增质量速度提高28.33%和8.44%,育肥效果显著,经济效益明显,可操作性强。微贮秸秆技术的推广与应用,不仅可以解决我国大量秸秆资源利用效率不高这一难题,而且可以减少环境污染,促进农业生产和农村经济的发展,增加农民收入,改善人民的肉食结构,提高人民的生活水平,并且为建立节粮型畜牧业结构,更好地发展可持续生态畜牧业做出巨大贡献。     

伊犁地区薰衣草产业发展现状及对策

伊犁是全国最大的薰衣草种植基地,薰衣草作为该区的特色作物给当地经济带来很大效益,为团场增效、职工增收、边疆社会稳定做出贡献。薰衣草除了提炼薰衣草精油和制作干花产品外,在园林观赏、食品、饮料、医疗保健、美容等领域也具有广阔的市场,以薰衣草产业为龙头,可带动其它相     

Effect of ivermectin and oxfendazole on shedding of larvae of the lungworm (Dictyocaulus viviparus) by red deer (Cervus elaphus)

Thirty eight newly weaned hinds were randomly allocated to one of two equal groups. One group received ivermectin, the other, oxfendazole at dose rates of 0.2 mg/kg and 4.5 mg/kg, respectively. All deer were drenched four times and were grazed on pasture. Both anthelmintics reduced D. viviparus faecal larval counts to low levels 20 days after dosing, but the mean larval output and the proportion of deer shedding D. viviparus larvae at 27 and 33 days after treatment, were significantly lower in the ivermectin treated group. There was no significant difference in weight gain between the two groups throughout the trial. This study suggests that ivermectin prevents reinfection with D. viviparus for approximately 14 days longer than oxfendazole.     

小黑麦属一新种

本新种系作者以节节麦(Triticum tauschii,DD,2n=14)作母本,与森林黑麦(Secale sylvestre,RSRS,2n=14)杂交,经染色体加倍而合成的双二倍体,其染色体组为DDRSRS,2n=4x=28。本文详细描述了该新种的形态。考虑到Krolow在1973年合成过类似的双二倍体,因此将本新种定名为Triticale rolowii(克氏小黑麦)。     

夏秋蚕新品种浒花、秋星的育成及其一代杂交种的选配

根据长江流域夏秋季的气候特点,采用杂交、回交、系统分离、活蛹缫丝和多代高温多湿环境定向培育等育种方法,分别育成了中系蚕品种“浒花”和日系蚕品种“秋星”。两者都具有抗性强、丝量高、茧丝质优以及繁育容易等特点。其一代杂交种经多次实验室鉴定、农村生产鉴定、试养以及全国蚕品种审定结果表明:该新品种体质强健、孵化、眠起、老熟齐一,茧丝量高,茧层率22％;鲜毛茧出丝率15—16％,茧丝品质优良、解舒率74％,净度93分,茧丝纤度2.53/D,茧丝长超1000m。     

Synergistic interactions between phenylamide fungicides and respiration inhibitors in controlling phenylamide-resistant populations ofPhytophthora infestans on potato tuber disks

The efficacy of mixtures of respiration inhibitors and phenylamide fungicides (oxadixyl and metalaxyl) in controlling late blight was investigated using potato tuber disks. Results showed that uncoupling agents(e.g. DNP), inhibitors of ATP formation(e.g. oligomycin), ionophores(e.g, valinomycin) and inhibitors that block specific carriers in the electron transport chain(e.g. rotenone, antimycin A) increased significantly the control efficacy of both metalaxyl and oxadixyl towards populations ofPhytophthora infestons when applied to tuber slices pretreated with sublethal doses of both fungicides. When applied alone at the same doses, respiration inhibitors did not inhibit the development of the late blight fungus. Increased control efficacy of mixtures was not noted against phenylamide-sensitive populations of the fungus.     

Estimation of the costs of mastitis, using National Animal Health Monitoring System and milk somatic cell count data

Data collected by the National Animal Health Monitoring System in Ohio for a 12-month period during 1986 and 1987 were used to determine the relative magnitude of costs associated with mastitis in the following categories: milk production loss, veterinary services, drugs, producer labor, and "other" factors. The cost of milk loss associated with mastitis that was reported by producers cooperating in the National Animal Health Monitoring System program was compared with estimates based on bulk tank somatic cell counts and individual cow milk somatic cell counts. Using producer-reported estimates, milk loss accounted for about one third of the total cost associated with mastitis. When estimates of milk loss were replaced by estimates based on bulk tank somatic cell counts, milk loss accounted for over 80% of the total cost of mastitis. Estimates of the cost of milk loss based on studies relating milk yield to somatic cell counts differed considerably. Consequently, it was unclear how to best estimate the relative magnitude of the milk loss component of mastitis costs.