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Chu Thi Thanh HUONG Takako MURANO Yukiko UNO Tatsufumi USUI Tsuyoshi YAMAGUCHI 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2014,76(12):1583-1587
Poultry red mite (PRM,
Dermanyssus gallinae) is a blood-sucking ectoparasite as well as a
possible vector of several avian pathogens. In this study, to define the role of PRM in
the prevalence of avian infectious agents, we used polymerase chain reaction (PCR) to
check for the presence of seven pathogens: Avipox virus (APV), Fowl Adenovirus (FAdV),
Marek’s disease virus (MDV), Erysipelothrix rhusiopathiae (ER),
Salmonella enterica (SE), Mycoplasma synoviae (MS) and
Mycoplasma gallisepticum (MG). A total of 159 PRM samples collected
between 2004 and 2012 from 142 chicken farms in 38 prefectures in Japan were examined. APV
DNA was detected in 22 samples (13.8%), 19 of which were wild-type APV. 16S ribosomal RNA
(16S rRNA) of MS was detected in 15 samples (9.4%), and the mgc2 gene of
MG was detected in 2 samples (1.3%). Eight of 15 MS 16S rRNA sequences differed from the
vaccine sequence, indicating they were wild-type strains, while both of the MG
mgc2 gene sequences detected were identical to the vaccine sequences.
Of these avian pathogen-positive mite samples, three were positive for both wild-types of
APV and MS. On the other hand, the DNAs of ER, SE, FAdV and MDV were not detected in any
samples. These findings indicated that PRM can harbor the wild-type pathogens and might
play a role as a vector in spreading these diseases in farms. 相似文献
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《养禽与禽病防治》课程系列化教材建设是高职畜牧兽医专业十分重要的专业课之一。其系列化教材建设是加强学生技能培养的需要,也是借助现代化教学手段提高教学效果的需要,同时有助于学生的自主学习、终身学习。理论教材建设应以产业对人才知识的要求为模块,以知识的关键环节为重点,突出强调知识实用性;实践教材应以实践操作为核心、以生产技术岗位任务为目标进行建设。同时指出了建设电子辅助教材有利于提高教学效果。另外,对养禽与禽病防治系列教材建设中存在的问题进行了分析,提出了解决对策。 相似文献
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环境与禽的大肠杆菌病 总被引:5,自引:0,他引:5
目前,禽的大肠杆菌病已经成为危害养禽业最主要的细菌性传染病。根据多年实践经验,从家畜生态理论入手,认为导致该病因及危害主要是禽的生态平衡失调,并提出治疗上应从纠正生态平衡失调入手,采用中西医结合疗法,才能收到事半功倍的理想效果。 相似文献
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免疫促进剂是一类用来增进机体免疫应答、调节免疫功能、维持机体免疫功能相对稳定,以达到防治疾病目的的物质。在动物医学上的应用将具有重要价值和作用,本文概述了家禽免疫促进剂的研究现状及其作用机理,并展望其应用前景。 相似文献
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A study on the occurrence of coccidiosis and distribution of Eimeria species in dead chickens 1-60 days of age, at Kombolcha Poultry Multiplication and Research Center (KPMRC), Ethiopia was conducted from November 2002 to April 2003. Out of the 965 dead birds, 370 (38.34%) were found to have clinical coccidiosis. The Eimeria species identified in this study were Eimeria brunetti, E. tenella, E. acervulina and E. necatrix with prevalence rates of 45.3%, 40.8%, 9.7%, and 4.1%, respectively. In the current study, E. brunetti was reported for the first time in Ethiopia. It was noted that clinical coccidioisis was more prevalent in those between 5 and 6 weeks of age. A statistically significant difference (p < 0.05) was observed in clinical coccidiosis prevalence among the different age groups studied. Various managerial problems that are associated with this high prevalence of clinical coccidiosis are identified and appropriate control strategies are recommended. 相似文献
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维生素D是家禽需要的重要维生素之一。本文阐述了家禽维生素D的来源、新陈代谢和生物学功能、影响家禽维生素D需要量的因素以及维生素D的缺乏或过量对家禽生长发育和生产性能的影响 ,也为进一步研究维生素D提供了借鉴 相似文献