9PJ——1.5型和9SJ——100型饲料加工机组通过鉴定

<正> 由吉林工业大学与吉林市机械厂共同研制的9PJ—1.5型配合饲料加工机组于85年3月在吉林市通过省级新产品鉴定。该机组的锤片式粉碎机,采用自吸式轴向进料,水滴形粉碎室,电动机与粉碎机转子直联传动,并设有去铁、去石和过载保护装置。为降低搅拌机高度,卸料管直插搅拌机壳体内部。     

北平——卢荫朴

卢荫朴先生,是北平城西三家店军庄村人。与黄子固先生等同时着手养蜂,他的蜂场起名“兄弟蜂场”。1928年7月22日,卢荫朴先生从三家店搬运蜜蜂179群,到宛平县管辖地衙门口村放蜂,该村无赖之徒以损害荞麦为名,对卢先生进行敲诈。     

东南亚——中国农业企业对外投资的沃土

东南亚地区与我国山水相连,人文相近,资源互补,对于中国农业企业来说,是有待重点开拓的巨大市场,尤其是在当前国内步入产业转型升级、高质量发展新阶段和国际上中美贸易战愈演愈烈的背景下,为中国农业企业对外投资提供了难得的机遇。具备条件的中国企业应提前布局,加大力度,着力开拓东南亚市场。一是中国与东南亚国家产业处于不同发展阶段,具有极强互补性。中国与越南的产业互补性强,主要体现在加工制造、批发和零售业、矿业、纺织服装业、基础设施、建筑服务等领域,越南存在资金能力有限、人力资源等问题,中国在这些领域具有优势,能投资带动当地就业,完善越南产业链结构。     

焦渴的地球——水危机与草坪

本文简要概述了包括我国在内的、世界范围水危机状况,着重阐明了草坪建植与水危机的矛盾,并就如何解决这一矛盾提出了一些不成熟的举措。     

荷兰——畜产品贸易大国

荷兰位于欧洲西部,受大西洋暖流影响,属温带海洋性气候,冬暖夏凉。荷兰东面与德国为邻,南接比利时,西、北濒临北海,地处莱茵河、马斯河和斯凯尔特河三角洲。荷兰人口密度极高,是世界人口密度最高的国家之一,总人口1723.10万人(2018年),人口密度超过407.5人/平方千米。荷兰国土总面积为41864平方千米。沿海有1800多千米长的海坝和岸堤,海岸线长1075千米。13世纪以来共围垦约7100多平方千米的土地,相当于荷兰陆地面积的五分之一。目前,荷兰国土的18%是人工填海造出来的。     

野蚕系列之四——樗蚕

樗蚕（Philosamia cynthia Walker et Felder）,又名椿蚕、小桕蚕,分布于中国、日本、印度、朝鲜、印度尼西亚等国,是一种珍贵的泌丝及食用昆虫资源.樗蚕在我国分布范围很广,主要分布于辽宁、河北、山东、江苏、浙江、福建、江西、广西、四川、台湾等省（区）.樗蚕属鳞翅目、大蚕蛾科,有许多亚种,染色体数目也有不同,多数樗蚕的染色体数2n=26,也有染色体数2n=28的.樗蚕与蓖麻蚕的血缘相近,二者成虫外形相似.只是腹部的鳞毛排列方式明显不同,前者成纵行排列,后者成横行排列.二者能杂交,且杂种可育.     

天府之国——四川

四川地大物博,历史悠久,自古以来就享有“天府之国”的美誉,新中国成立以志,四川进入了新的历史发展时期。经过50多年的社会主义建设,特别是20多年的改革开放,四川的经济建设突飞猛进,综合经济实力不断增强。四川是全国的农产品供应大省,是国家最大的粮、油、猪生产基地之一。经济作物油菜籽、甘蔗、茶叶、柑桔、蚕丝产量居全国前列;中药材驰名中外;银耳、生漆、毛竹等产品享誉全国。四川也是中国重要的工业基地之一。其中冶金、采矿、化工、机械、宇航、电子工业等在全国占有重要地位。攀枝花钢铁公司、成都飞机公司、长虹集团、希望集团等为代表的一大批国有企业和民营企业,闻名国内外。     

生物改造②——我的丝绸之路

第二章 特大茧与特小茧一、蚕的一生蚕孵化成幼虫,食桑约4周后成为熟蚕,吐丝结茧.结茧后经4～5日化蛹,再经10～15日化蛾,经交配产卵,结束一生.在不到2个月的时间内,即发生卵一幼虫一蛹一蛾,明显的变态.昆虫的变态很早就为人们所注目,为解开这个谜作了不懈的努力,至今已完全清楚,昆虫的蜕皮与变态是由于激素作用的结果.这种激素是由脑,前胸腺和咽侧体所分泌的.     

兽医临床现代针灸新疗法——水针疗法

水针疗法也叫穴位注射法,是一种针刺与药物相结合的新疗法.它是在穴位、痛点或肌肉起止点注射某些中西药物或生物制品,通过针刺、液压和药物对穴位的刺激,来调整机体的机能和改变病理状态,以达到治疗疾病的目的.     

灵芝泰山——4

由北京市检验检疫科学技术研究院承担的北京市科委科技计划课题《高品质畜禽产品关键检测技术研究及示范应用》日前顺利通过成果验收。该课题组研制的用于H5亚型禽流感病毒和猪繁殖与呼吸综合征病毒美洲型的快速检测法——LAMP快速检测技术,能够在2-3小时内得到检测结果,且无需昂贵仪器,适合基层现场诊断使用。     

H9N2亚型禽流感病毒传播途径特性的比较及其表面基因序列分析

选择中国大陆最早分离的H9N2亚型禽流感病毒(avian influenza virus,AIV)A/Chicken/Guangdong/SS/94(H9N2)(缩写为SS株)和1998年大流行时期分离的H9N2亚型AIVA/Chicken/Shanghai/F/98(H9N2)(缩写为F株)为研究对象,对其在SPF鸡体内的复制能力和传播途径特性比较后发现,F株在4周龄SPF鸡气管中的复制能力高于SS株,F株可以经气溶胶传播途径传播,SS株不能经气溶胶传播途径传播;利用反转录-聚合酶链反应(RT-PCR)方法获取F株和SS株的HA和NA基因的cDNA,序列分析得知,F株和SS株的HA和NA基因的同源性分别是96.6%和98.1%;HA基因的裂解位点氨基酸序列都是PARSSR↓GL,但有5个氨基酸的差异,即166位N(F)→D(SS)、198位A(F)→V(SS)、217位V(F)→I(SS)、335位G(F)→R(SS)、504位L(F)→S(SS);2株病毒的NA基因在63~65位都存在氨基酸缺失,但在NA基因红细胞吸附位点的氨基酸序列不同,分别是IKKDSRSG(F)和IKEDLRSG(SS)。F株和SS株的传播特性差异是否与其表面基因序列有关,有待进一步研究。     

禽类的起源、演化及我国主要家禽品种类型与分布

家禽是重要经济价值动物.本文从禽类种群进化学说出发,简介了禽类的起源、演化、动物学分类和家禽的驯化(养)与品种的形成,并对我国主要家禽(鸡、鸭、鹅)地方品种和培育品种(配套系)的分布与类型作了描述,以期为研究我国家禽起源系统,保护与利用我国家禽品种,促进家禽生产可持续发展提供参考.     

一起猪链球菌病和伪狂犬病的混合感染的诊治

近年以来,由于市场因素的刺激,生猪的存养量大幅上升,再加上由于流通环节较多,流通非常频繁,流通距离越来越远。这对繁荣经济,增加养殖效益起了重要的推动作用,但也同时给疾病的感染和传播创造了有利条件,给猪病的防治带来了困难。有的猪场感染了传染病后,由于治疗不及时不得法,而造成了惨重的经济损失。2008年7月中旬,我街道一养猪户因盲目从外地购进中猪,发生猪病疫情,引起猪只连续死亡,造成一定的经济损失。根据流行病学、临床症状、剖检变化和实验室诊断,诊断该病为猪链球菌病和猪伪狂犬病混合感染,现报告如下。     

秋冬季预防和治疗虫媒性传染病鸡白冠病和鸡痘

１前言１．１鸡白冠病鸡白冠病是由卡氏住白细胞原虫寄生于鸡的红细胞和单核细胞而引起的鸡的贫血性疾病。吸血昆虫蚋和库蠓叮咬鸡引起传播，是主要的传播媒介，一般在夏末和秋季多发，由于夏季降雨量较大，部分沟渠积水，库蠓和蚋多孳生，因此在多雨水涝的年份发病率明显增高。１９９８年中国从南到北发生洪涝灾害，吸血昆虫的孳生格外严重，出现了一个白冠病多发年，而后两年发病稍轻，并有地区性，今年８月中旬以来白冠病的发病呈抬头趋势，有一定的死亡率，对蛋鸡产蛋率也会引起一定程度的降低，应引起养鸡户的重视。１．２鸡痘鸡痘也是…     

种鹅矛形剑带绦虫与背孔吸虫混合感染的诊治

2005年9月份,大庆市红岗区个体养鹅专业户送检6只病死的5月龄左右隆昌鹅和长白鹅,经过实验室诊断确诊为矛形剑带绦虫与背孔吸虫混合感染。矛形剑带绦虫属膜壳科     

Evaluation of lysozyme and lactoferrin in lacrimal and other ocular glands of bison and cattle and in tears of bison

OBJECTIVE: To evaluate lactoferrin and lysozyme content in various ocular glands of bison and cattle and in tears of bison. SAMPLE POPULATION: Tissues of ocular glands obtained from 15 bison and 15 cattle and tears collected from 38 bison. PROCEDURE: Immunohistochemical analysis was used to detect lysozyme and lactoferrin in formalin-fixed, paraffin-embedded sections of the ocular glands. Protein gel electrophoresis was used to analyze ocular glands and pooled bison tears by use of a tris-glycine gel and SDS-PAGE. Western blotting was used to detect lactoferrin and lysozyme. RESULTS: Immunohistochemical staining for lactoferrin was evident in the lacrimal gland and gland of the third eyelid in cattle and bison and the deep gland of the third eyelid (Harder's gland) in cattle. Equivocal staining for lactoferrin was seen for the Harder's gland in bison. An 80-kd band (lactoferrin) was detected via electrophoresis and western blots in the lacrimal gland and gland of the third eyelid in cattle and bison, Harder's glands of cattle, and bison tears. An inconsistent band was seen in Harder's glands of bison. Lysozyme was not detected in the lacrimal gland of cattle or bison with the use of immunohistochemical analysis or western blots. Western blots of bison tears did not reveal lysozyme. CONCLUSIONS AND CLINICAL RELEVANCE: Distribution of lactoferrin and a lack of lysozyme are similar in the lacrimal gland of cattle and bison. Differences in other tear components may be responsible for variability in the susceptibility to infectious corneal diseases that exists between bison and cattle.     

Shape and size of teeth of dogs and cats-relevance to studies of plaque and calculus accumulation

Crown width, height and buccal surface areas were measured on heads or skulls of four dogs and four cats, and were compared with similar measurements on models of human dentition. Buccal surface area variability was greater in dogs and cats than in humans, and teeth of cats were smaller. Horizontal (gingival and occlusal halves) and vertical (mesial, middle, and distal thirds) buccal surface area variability was also greater in canine and feline teeth compared with human teeth. This increased variability suggests the need for testing of reliability and repeatability of scoring when using plaque and calculus indices based on horizontal or vertical segmentation. Buccal surface area variability between teeth also prompts questioning the validity of equal weighting of smaller, irregularly-shaped teeth when calculating a mean mouth score. Whether equal or more reliable results would be obtained from scores of whole teeth in comparison with segmentation indices used currently has yet to be determined.     

Description and classification of abnormal cercariae of Schistosoma mattheei and a method of concentration and collection

Over a period of about 12 years, 30 abnormal Schistosoma mattheei cercariae were found among a total of approximately 2.8 million examined. Initially seven were recovered from about 1.02 million (0.0007%), which were examined individually while being counted with the aid of a stereoscopic microscope. Subsequently, on the strength of relatively high percentages of abnormal individuals recovered when counting cercariae that failed to penetrate into oxen, it appeared that the morphologically abnormal cercariae were unable to swim and would mostly sediment out of a suspension while most of the normal cercariae would remain swimming. This surmise is supported by recovery of 23 morphologically abnormal cercariae (0.001%) from about 1.8 million, by examining the sediment after the cercarial suspension had been left standing undisturbed in glass measuring cylinders. The abnormalities ranged from aberrant tails only (e.g. an underdeveloped tail, or different degrees of schism) or aberrant heads only, to abnormalities of both the heads and tails. A suggested schematic classification of abnormal cercariae is presented. A young, adult hamster was exposed to eight S. mattheei cercariae with complete schism of the shaft of the tail, by pipetting the cercariae onto the shaved abdominal skin of the anaesthetised animal. Two underdeveloped females were subsequently encountered in squash preparations of the liver when the hamster was killed for worm recovery 10 weeks after infection, thus showing that some of the abnormal cercariae were viable. A method is also described for killing and fixing cercariae while retaining some of the shining brilliance of live cercariae, without them becoming shrivelled, granular and semi-opaque, as occurs when cercariae die spontaneously or are killed with heat. This is apparently the first report of abnormal cercariae of S. mattheei. In addition, a method of concentrating abnormal cercariae after emergence from a snail, a schematic classification of abnormal cercariae and a method for killing and fixing cercariae while retaining much of the shiny brilliance of live cercariae are also reported for the first time as far as is known.