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  1. Article ; Online: Queijo de leite ovino

    Adil Knackfuss Vaz / Gilberto Masashi Ide / Domingos Silvestre dos Santos / Fernando Cannella Pedemonte

    Agropecuária Catarinense, Vol 15, Iss

    2021  Volume 1

    Abstract: ... ...

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    Keywords ovino ; Agriculture (General) ; S1-972
    Language English
    Publishing date 2021-09-01T00:00:00Z
    Publisher Empresa de Pesquisa Agropecuária e Extensão Rural de Santa Catarina
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  2. Article ; Online: MASTITE BOVINA POR Prototheca sp. EM SANTA CATARINA

    Adil Knackfuss Vaz / Deolinda Maria Vieira Filha Carneiro / Camila Wolff / Willian Dick / Aline Mendes Luciano

    Revista de Ciências Agroveterinárias, Vol 4, Iss

    RELATO DE CASO

    2014  Volume 1

    Abstract: Prototheca sp. são algas de distribuição universal e que causam diversas afecções nos animais e no homem. Em vacas leiteiras, podem causar mastite. Neste trabalho, descrevemos o isolamento de Prototheca sp. em amostras de leite provenientes de três vacas ...

    Abstract Prototheca sp. são algas de distribuição universal e que causam diversas afecções nos animais e no homem. Em vacas leiteiras, podem causar mastite. Neste trabalho, descrevemos o isolamento de Prototheca sp. em amostras de leite provenientes de três vacas com mastite crônica, na região do Planalto Sul Catarinense. Trata-se do primeiro relato de mastite por este agente no estado de Santa Catarina. Por ser um microorganismo resistente ao tratamento por antibióticos, a melhor forma de controle da doença consiste em identificar e eliminar os animais infectados.
    Keywords Prototheca sp ; mastite bovina ; gado leiteiro ; Agriculture ; S ; Agriculture (General) ; S1-972 ; Veterinary medicine ; SF600-1100
    Language English
    Publishing date 2014-09-01T00:00:00Z
    Publisher Universidade do Estado de Santa Catarina
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  3. Article: Brucella abortus RB51 in milk of vaccinated adult cattle

    Miranda, Karina Leite / Adil Knackfuss Vaz / Andrey Pereira Lage / Elaine Maria Seles Dorneles / Fernando Padilla Poester / Sandra Maria Ferraz / Thiago Magalhães Resende

    Acta tropica. 2016 Aug., v. 160

    2016  

    Abstract: The aim of this study was to evaluate the shedding of Brucella abortus in the milk of cows vaccinated with a full dose of RB51 during lactation. Eighteen cows, nine previously vaccinated with S19 as calves and nine non-vaccinated, were immunized ... ...

    Abstract The aim of this study was to evaluate the shedding of Brucella abortus in the milk of cows vaccinated with a full dose of RB51 during lactation. Eighteen cows, nine previously vaccinated with S19 as calves and nine non-vaccinated, were immunized subcutaneously with 1.3×1010CFU of B. abortus RB51, 30–60days after parturition. Milk samples from all animals were collected daily until day 7, and at weekly interval for the next 9 weeks after vaccination. To evaluate the shedding of B. abortus, milk samples were submitted for culture and PCR. No B. abortus was isolated from any sample tested. Only one sample, collected on first day after vaccination from a cow previously vaccinated, was faintly positive in the PCR. In conclusion, the public health hazard associated with milk consumption from cows vaccinated with RB51 in post-partum is very low, despite vaccination with the full dose and regardless of previous S19 vaccination.
    Keywords adults ; Brucella melitensis biovar Abortus ; calves ; cows ; health hazards ; lactation ; milk ; milk consumption ; parturition ; polymerase chain reaction ; public health ; vaccination
    Language English
    Dates of publication 2016-08
    Size p. 58-61.
    Publishing place Elsevier B.V.
    Document type Article
    ZDB-ID 210415-5
    ISSN 1873-6254 ; 0001-706X
    ISSN (online) 1873-6254
    ISSN 0001-706X
    DOI 10.1016/j.actatropica.2016.04.012
    Database NAL-Catalogue (AGRICOLA)

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  4. Article ; Online: Imunidade inata da glândula mamária bovina

    Deolinda Maria Vieira Filha Carneiro / Paulo Francisco Domingues / Adil Knackfuss Vaz

    Ciência Rural, Vol 39, Iss 6, Pp 1934-

    resposta à infecção Innate immunity of the bovine mammary gland: response to infection

    2009  Volume 1943

    Abstract: A imunidade na glândula mamária pode ser classificada, assim como em outros sistemas, em inata ou inespecífica e adaptativa ou específica. A imunidade inata é a defesa predominante durante os estágios iniciais da infecção. As respostas inespecíficas ... ...

    Abstract A imunidade na glândula mamária pode ser classificada, assim como em outros sistemas, em inata ou inespecífica e adaptativa ou específica. A imunidade inata é a defesa predominante durante os estágios iniciais da infecção. As respostas inespecíficas estão presentes no local da infecção ou são ativadas rapidamente por numerosos estímulos e não aumentam pela exposição repetida ao mesmo agente etiológico. O primeiro obstáculo enfrentado por um patógeno para adentrar o úbere é composto pela barreira formada pelo esfíncter do teto e pelo tampão de queratina formado pelo epitélio queratinizado. Uma vez que o microrganismo tenha atravessado o canal do teto e alcançado a cisterna mamária, passam a atuar diversos fatores solúveis e celulares. Dentre os fatores solúveis, estão presentes: lactoperoxidase, sistema complemento, citocinas, lactoferrina, lisozima e NAGase. As defesas celulares inespecíficas na glândula mamária são representadas pelos neutrófilos, pelos macrófagos e pelas células natural killer. Na medida em que esses mecanismos funcionam adequadamente, a maioria dos patógenos será rapidamente eliminada antes que o sistema imune específico seja ativado, sem resultar em alterações na quantidade ou qualidade do leite produzido. Uma melhor compreensão sobre os mecanismos de defesa da glândula mamária e suas alterações durante os períodos críticos da infecção é imprescindível para o desenvolvimento de métodos mais eficazes de profilaxia e controle da mastite, a principal doença dos ruminantes leiteiros. O presente estudo revisou os principais aspectos responsáveis pelo desenvolvimento da imunidade inata na glândula mamária bovina. The immunity in the mammary gland can be, as in other systems, classified in innate or adaptive immunity. The innate immunity is the predominant defense during the initial periods of infection. The non-specifics answers are present or are quickly activated in the infection's site by numerous stimulations, and these answers are not enhanced by repeated exposure to the same agent. The first obstacle to be faced by the agent is the barrier represented by the teat sphincter and the keratin plug. When the pathogenic agent crosses the teat canal and reaches the teat cistern, starts to act the humoral factors and the phagocytic cells starts do act. Among the humoral mediators there are the lactoperoxidase, complement, cytokines, lactoferrin, lysozyme and NAGase. The non-specific cellular defenses are represented by neutrophils, macrophages and natural killer cells. If these mechanisms have been functioning adequately, the majority of pathogens will be eliminated in a short time, before the specific immune system be activated. The fast elimination of the microorganisms will not allow these alterations in the amount or quality of produced milk. The best understanding of the defense mechanisms of the mammary gland and its alterations during the critical periods of infection, is an useful tool in devising and developing methods to control the mastitis, the major illness of dairy ruminants. This paper overviewed the most important aspects of the innate immunity of bovine mammary gland.
    Keywords mastite bovina ; imunidade inata ; glândula mamária ; bovine mastitis ; innate immunity ; mammary gland ; Agriculture ; S ; Agriculture (General) ; S1-972
    Language English
    Publishing date 2009-09-01T00:00:00Z
    Publisher Universidade Federal de Santa Maria
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  5. Article ; Online: A SURVEY OF SHEEP MASTITIS IN SOUTHERN BRAZIL

    Adil Knackfuss Vaz / James Eirug Thomas Jones

    Ciência Rural, Vol 24, Iss 2, Pp 339-

    1994  Volume 342

    Abstract: SUMMARY Ovine mastitis causes varying economic fosses in all countries where sheep are kept. A survey of 3128 breeding ewes in 22 farms in two areas with different management practices in Southern Brazil showed that the average prevalence of subclinical ... ...

    Abstract SUMMARY Ovine mastitis causes varying economic fosses in all countries where sheep are kept. A survey of 3128 breeding ewes in 22 farms in two areas with different management practices in Southern Brazil showed that the average prevalence of subclinical and chronic mastitis was 14.1% of ewes with at least one affected gland. From those, 4.49% were also bacteriologically positive. The prevalence in individual farms varied from 0 to 37% of ewes with clinical abnormalities of the udder. The overall prevalence was greater in Area II, where meat breeds predominate and animals are housed at night. It is concluded that subclinical and chronic mastitis is uniikely to be an economic problem in Area I, where wool production is the objective of the sheep industry. However, in individual farms with high prevalence of the disease lamb survival and development may be affected. In Area II, mastitis is more likely to be a problem because of the higher prevalence found in that area.
    Keywords ovinos ; ovelha ; mastite ; cordeiros ; Brasil ; Agriculture ; S ; Agriculture (General) ; S1-972
    Subject code 630
    Language English
    Publishing date 1994-01-01T00:00:00Z
    Publisher Universidade Federal de Santa Maria
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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