Imunobiologia das infestações de bovinos pelo carrapato Rhipicephalus (Boophilus) microplus: estudo dos correlatos imunes de resistência e de susceptibilidade

“…Abatepaulo (2007) verificou que bovinos da raça Nelore quando comparados a Holandeses, possuem maior expressão de citocinas quimiotáticas e pró-inflamatórias, que aumentam o recrutamento de linfócitos para o local de fixação do carrapato, contribuindo para a resistência do animal contra a infestação. Resultado semelhante foi obtido por Franzin (2009), que além dos linfócitos, também detectou maior quantidade de basófilos e eosinófilos no infiltrado de pele das raças zebuínas. Piper et al (2009) também acreditam que essa diferença de resistência entre as raças está na maior população de linfócitos-T, expressão de citocinas e níveis de imunoglobulina IgG, no sangue periférico das raças zebuínas quando infestados pelos carrapatos.…”

Section: Epidemiologiaunclassified

Avaliação do efeito imunomodulador e carrapaticida de micro-organismos probióticos em bovinos da raça Girolando

Teixeira¹

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Tick infestation is the main parasitic diseases that affect the cattle farming. In addition to impairing the health of the animal by means of a hematophagous habit, it also generates economic losses regarding its control, being the use of acaricides the main method used. Its neglected use has led to cases of resistance, which turn necessary the development of alternative methods such as the immunization with vaccines and the use of probiotics. Probiotics are functional food that contains live microorganisms that when ingested in appropriate amount bring benefits to the hosts through different mode of action. Thus, the present work aimed to evaluate the immunomodulatory and acaricide effect of probiotic microorganisms in Girolando cattle. Therefore, during 154 days, 30 animals were distributed in 6 groups, and submitted to different treatments: Group A (control), the animals did not received any treatment. Group B (vaccine effect), on the initial, 14 and 28 days, the animals were immunized with rGST-H1. Group C (probiotic effect EEL, the animals received, for 70 days, a daily dose of 10 mL of the probiotic EEL preparation. Group D (vaccine + probiotic EEL effect), on the initial, 14 and 28 days, the animals were vaccinated and received for 70 days, 10 mL probiotic preparation EEL. Group E (probiotic effect PT), the animals received, for 70 days, a dose of 10 mL of probiotic preparation ProbioTick and Group F (vaccine + PT probiotic effect), on the initial, 14 and 28 days, the animals were vaccinated and received daily for 70 days, 10 mL ProbioTick. In each 14 days blood samples were collected and exams were performed to evaluate hemostasis, anemia status and development of the immune response. The results showed that the different treatments did not affect hemostasis and the erythrocytic parameters of the animals. Regarding the immune system, the results showed that the animals treated with probiotic preparations presented a higher number of lymphocytes when compared to the control group, differing statistically on the 70th day, being that the percentages found for groups C, D, E and F were respectively 55.8%; 63.5%; 60.8% and 59.4%. In addition, animals treated with the probiotic (Groups D and F) and vaccinated (B) showed higher levels of total IgG antibodies (72.769, 93.735 and 98.825 mg/dL) and as for the IgG anti rGST-H1 antibodies, only the animals in Groups D and F had their values increased for a longer period, where on the 98th day, The optical densities measured were 0.868 and 0.915. Therefore, the probiotic preparations evaluated were able to modulate the immune response of animals.

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Imunobiologia das infestações de bovinos pelo carrapato Rhipicephalus (Boophilus) microplus: estudo dos correlatos imunes de resistência e de susceptibilidade

Cited by 2 publications

References 13 publications

A influência da co-evolução bovinos/carrapatos nos métodos de controle e ambiência na bovinocultura

A influência da co-evolução bovinos/carrapatos nos métodos de controle e ambiência na bovinocultura

Avaliação do efeito imunomodulador e carrapaticida de micro-organismos probióticos em bovinos da raça Girolando

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