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1.
本文介绍了在湖南红咀相思、画眉及红点颏的腺胃中检获的两种微四棱线虫——黄鹂微四棱线虫(Micortetrameresoriolusorientalis)和无刺微四棱线虫(M.inermis),并对该两虫的宿主,发现地点及雌、雄虫的形态特征和量度作了描述。  相似文献   

2.
应用敌百虫,四咪唑,丙硫咪唑,虫克星4种药物分别对40只绵羊进行了驱虫对比试验,设置空白对照组,结果表明:虫克星驱虫前,后每克粪便虫卵数(epg)相比差异极显著(P〈0.01);敌百虫组,四咪唑组驱虫后epg与虫克星组驱虫后epg相比差异也极显著(P〈0.01),虫克星组驱虫卵转阴率为90%,虫卵减少率为97.2%,表明虫克星是一种值得推广的高效抗寄生虫药。而敌百虫,四咪唑,丙硫咪唑的驱虫效果下降  相似文献   

3.
黑粉虫是昆虫纲鞘翅目拟步甲科粉虫属昆虫,原是一种国内广泛分布的仓贮害虫,目前已经变害为利,成为了养蝎饲料虫的最佳选择,用黑粉虫为主配合投喂黄粉虫等其它饲料虫,东亚钳蝎不但吃得饱、长得快、脱皮和产仔顺利,而且生长发育更一致,成活率大幅度提高,养蝎效益也更好。笔者在1998年饲养黄粉虫的同时,到各处粮食仓库进行搜寻,采集到了少量野生黑粉虫,通过四年的研究和试验,终于成功地总结出了室内盆养高产养殖技术,从而否定了过去一直认为黑粉虫室内饲养产量很低的说法。为使广大养蝎户尽快掌握黑粉虫的养殖管理技术,现将黑粉…  相似文献   

4.
应用敌百虫、四咪唑、丙硫咪唑、虫克星4种药物分别对40只绵羊进行了驱虫对比试验,结果表明:虫克星驱虫前、后每克粪便卵数(epg)相比差异极显著(P0.01);敌百虫组、四咪唑组驱虫后epg与虫克星组驱虫后epg相比差异也极显著(P0.01)。虫克星组驱虫后虫卵转阴率为90%,虫卵减少率为97.2%,表明虫克星是一种值得推广的高效抗寄生虫药。而敌百虫、四咪唑、丙硫咪唑的驱虫效果下降,虫卵减少率均低于95%,且95%的可信区间低于90%,表明虫体已经产生了抗药虫株。  相似文献   

5.
鸡住白细胞虫是鸡的一种血液侵袭性疾病病原。该病在东南亚盛为流行,福建、遵义、云南、四)11均有此病的报导。在道真县也发现该病流行。为摸清鸡住白细胞虫的感染情况,我们对道真县鸡住白细胞虫的感染、分布、危害情况及住白细胞虫的形34态,白细胞带虫率等作了调查。1材料来源:玉溪镇农贸市场各乡集中在此的出售鸡,大汗,忠信,三桥等乡镇农户饲养鸡随机抽样检查。1.l检查及染色方法:鸡冠采血约20nun‘制成薄血片,甲醇固定,用美兰染色30分钟,冲洗后自然干燥,400信显微镜观察。l·2白细胞带虫率:对查有住白细胞虫的阳性鸡血片…  相似文献   

6.
犬梨形虫病的诊治吴礼洁郑列丰陈泽祥周国基广西兽医研究所530001犬梨形虫病是由犬巴贝斯和吉布逊氏虫等梨形虫引起的血液寄生虫病,中间宿主是硬蜱。在临床上较少碰到,也较容易被误诊。我们在小动物医院曾收诊治愈四例该病病犬,诊治方法归纳如下。1诊断该病临床...  相似文献   

7.
沙广穗 《广西蚕业》2004,41(1):20-24
本粗浅地谈了我市桑树四种尺蠖的发生世代。并分别从成虫、幼虫和越夏越冬虫态等三个方面说明了四种尺蠖的生活习性。同时简要地分析了桑树四种尺蠖的发生与环境的关系,以及结合我市实际总结了初步的防治意见。  相似文献   

8.
检查福州市7个鸭场周围水体,发现有3.7%的异壳介虫含分棘四棱线虫感染期幼虫。人工感染试验证实异壳介虫可在鸭群中传播国棱线虫病。调查表明,异壳介虫许区鸭四棱线虫病的主要传播媒介。本文描述感染期四棱线虫特点并从流行病学角度探讨该病的控制方法。  相似文献   

9.
重金属污染物对卤虫无节幼体的毒性   总被引:1,自引:0,他引:1  
在水温为(27±0.5)℃,盐度为7°B′e和连续充气条件下,采用动态活水法研究了汞、铅、铜、锰、铬对卤虫无节幼体的毒性效应及联合毒性作用。结果表明,5种金属对卤虫无节幼体的48hLC50分别是0.023、1.31、2.10、12.15、28.91mg/l。毒性由强至弱依次为Hg2+>Pb2+>Cu2+>Mn2+>Cd2+,Hg-Cu、Cu-Mn对卤虫幼体的联合作用表现为拮抗作用,Pb-Cu、Pb-Mn、Mn-Cd则表现为协同作用。  相似文献   

10.
江津市鸡寄生虫区系调查   总被引:1,自引:0,他引:1  
按寄生虫完全剖检法和粪便检查法对重庆江津市鸡的寄生虫进行区系调查,结果查出寄生虫35种,隶属4门6纲9目17科20属,其优势中种为卷棘虫吸虫、透明前殖吸虫、棘沟瑞利绦虫、美州四棱线虫、卡氏住白细胞虫、柔嫩艾美耳球虫、堆型艾美耳球虫、巨型艾美耳球虫和毒害艾美耳球虫。  相似文献   

11.
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。  相似文献   

12.
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…  相似文献   

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15.
禽类的起源、演化及我国主要家禽品种类型与分布   总被引:1,自引:1,他引:0  
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.  相似文献   

16.
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  相似文献   

17.
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。  相似文献   

18.
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.  相似文献   

19.
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.  相似文献   

20.
1. The repeatability and heritability of growth inhibition by egg albumen of two major pathogenic bacteria, a Gram-negative (Salmonella Enteritidis) and a Gram-positive (Staphyloccocus aureus) and of two antimicrobial albumen proteins, lysozyme and ovotransferrin, were estimated in commercial pedigree hens. 2. Repeatability was evaluated in 100 egg-type hens at the beginning, middle and end of the laying cycle on eggs collected for 3 weeks. Heritabilities were estimated at 36 to 40 weeks of age on 400 pedigree hens (2 eggs/hen), which were the offspring of 25 sires each mated with 4 dams. Ovotransferrin and lysozyme were quantified by ELISA. Salmonella Enteritidis (S.E.) and Staphyloccocus aureus (S.A.) were inoculated into a sample of sterilised albumen and enumerated after incubation. 3. Total protein content in albumen decreased with age of laying hens, whereas there were increases in lysozyme or ovotransferrin concentrations and in the bacteriostatic effect of albumen. 4. Repeatability for bacterial growth in albumen ranged from 0.29 to 0.39 for the number of S.E. (log cfu/ml) one day post inoculation (p.i.) but was lower and more variable at 5 d p.i. or for S.A. number. It ranged from 0.27 to 0.38 for S.E. and S.A. number at the mid period of the laying cycle. Repeatabilities were low and variable for total egg albumen protein or lysozyme and ovotranferrin concentrations (0 to 0.22). 5. Negative phenotypic correlations were observed between lysozyme concentrations and S.E. number but that between lysozyme and S.A. number was not significant. 6. Heritabilities were low (0.01 to 0.09) for protein traits. They were 0.11 for S.A. number and 0.16 for S.E. number one day p.i. 7. It appears to be more efficient to select on global bacterial growth than on specific antimicrobial proteins. The most promising trait is the number of S.E. one day p.i.  相似文献   

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