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      IMPORTÂNCIA DAS MICOPLASMOSES NA FERTILIDADE DE TOUROS Translated title: IMPORTANCE OF MYCOPLASMA BOVIS, M. BOVIGENITALIUM AND UREAPLASMA DIVERSUM IN THE FERTILITY OF BULLS

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          Abstract

          RESUMO O estudo das micoplasmoses da reprodução em bovinos tem apresentado resultados indicativos de que estas enfermidades estão presentes na rotina dos veterinários de campo brasileiros e podem estar acarretando perdas econômicas significativas aos produtores rurais. Micoplasmas e ureaplasmas podem causar orquite, vesiculite seminal, balanopostite e epididimite em touros com conseqüente perda da qualidade seminal e capacidade de fertilização. Esta revisão apresenta informações específicas sobre o assunto, favorecendo a pesquisa dos interessados na área.

          Translated abstract

          ABSTRACT The study of the reproductive mycoplasmosis in cattle has been presenting results wich indicate that these illnesses are present in the routine of the Brazilian field veterinarians and that it can be resulting in significant economic losses for the producers. Mycoplasmas and ureaplasmas can cause orchitis, seminal vesiculitis, balanoposthitis and epididymitis in bulls with consequent loss of the seminal quality and fertilization capacity. This review presents specific information on the subject, favoring research in the area.

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          Hygienic aspects of storage and use of semen for artificial insemination.

          M Thibier, B Guérin (2000)
          The artificial insemination (AI) industry has developed over the last 50 years to the extent that it is used in almost every country in the world. One of the main factors contributing to its success is the confidence of the farmers that germplasm is not associated with pathogens, so that AI can be performed without risks. This has been achieved as a result of a considerable amount of research based on sound scientific data that has identified the major risk pathogens. A summary of these studies, given in this section, shows that despite the large number of agents that could be transmitted via the semen, there are cost-effective means to prevent such hazards. One of the basic rules is that the males should be housed in strictly protected semen collection centres (SCCs). Such centres should be approved by the veterinary authorities based upon specific criteria, which include special housing and operating specifications. This also includes specific means of monitoring the health of individual males through regular clinical examinations, assessment of semen and testings for various diseases. Two new challenges can now be identified, one relevant to so-called emerging diseases the impact of which on the status of the semen donors should always be assessed, and the second, relates to endangered genetic resources which may become extinct without active conservation programmes. The experience gained by the AI industry over the last 50 years should help to solve those problems. Currently, the use of semen derived from approved SCCs warrants their disease-free status.
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            Comparison of in vitro activity of danofloxacin, florfenicol, oxytetracycline, spectinomycin and tilmicosin against recent field isolates of Mycoplasma bovis.

            A E Simon, Kate Baker, Kevin R Nicholas … (2000)
            The minimum inhibitory concentrations (MICS) and minimum mycoplasmacidal concentrations (MMCs) of danofloxacin, florfenicol, oxytetracycline, spectinomycin and tilmicosin against 62 recent British field isolates of Mycoplasma bovis were determined in vitro by a broth microdilution method. The isolates were most susceptible todanofloxacin with MIC90 and MMC90 values of 0.5 microg/ml and 1.0 microg/ml, respectively. They were less susceptible to florfenicol with a MIC90 of 16 microg/ml and MMC90 of 32 microg/ml. Oxytetracycline and spectinomycin had only a limited effect against the majority of isolates tested with MIC50s of 32 microg/ml and 4 microg/ml, respectively and MIC90s of 64 microg/ml and more than 128 microg/ml, respectively. Nearly 20 per cent of the isolates were highly resistant to spectinomycin, and tilmicosin was ineffective, with 92 per cent of the isolates having MIC values of 128 microg/ml or greater. There was no evidence of resistance by M bovis to danofloxacin.
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              In vitro fertilization and culture of ova from heifers infected with bovine herpesvirus-1 (BHV-1)

              A Bielanski, C Dubuc (1994)
              Article 0 comments Cited 11 times – based on 0 reviews     Review now
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                Author and article information

                Journal
                Journal ID (publisher-id): aib
                Title: Arquivos do Instituto Biológico
                Abbreviated Title: Arq. Inst. Biol.
                Publisher: Instituto Biológico (São Paulo, SP, Brazil )
                ISSN (Print): 0020-3653
                ISSN (Electronic): 1808-1657
                Publication date (Print and electronic): April 2004
                Volume: 71
                Issue: 2
                Pages: 257-265
                Affiliations
                [2] São Paulo São Paulo orgnameUniversidade de São Paulo orgdiv1Faculdade Medicina Veterinária e Zootecnia orgdiv2Departamento de Medicina Veterinária Preventiva e Saúde Animal Brazil
                [1] São Paulo SP orgnameCentro de Pesquisa e Desenvolvimento de Sanidade Animal orgdiv1Instituto Biológico Brasil marisvc@ 123456hotmail.com
                Article
                Publisher ID: S1808-16572004000200257 Publisher ID: S1808-1657(04)07100200257
                DOI: 10.1590/1808-1657v71p2572004
                SO-VID: 4bfcedb3-58dc-45e1-baed-9b1e7d30d59d
                License:

                This work is licensed under a Creative Commons Attribution 4.0 International License.

                History
                Date accepted : 18 August 2004
                Date received : 18 March 2004
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 71, Pages: 9
                Product

                SciELO Brazil

                Categories
                Subject: Artigo de Revisão

                Keywords: Ureaplasma,Mycoplasma,mycoplasmosis,bulls,bovine,fertility.,fertilidade.,micoplasmoses,touros,bovinos
                Data availability:
                Keywords: Ureaplasma, Mycoplasma, mycoplasmosis, bulls, bovine, fertility., fertilidade., micoplasmoses, touros, bovinos

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