Avaliação do quelato de cobre e zinco em forma de spray no tratamento de vacas acometidas por dermatite digital
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Data
2021-05-05
Autores
Moura, Raymis Bruno Rosa
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Editor
Universidade Estadual Paulista (Unesp)
Resumo
A dermatite digital (DD) é uma enfermidade podal responsável por causar claudicação e prejuízos econômicos na bovinocultura leiteira. O tratamento envolve antibioticoterapia por via sistêmica e/ou tópica, contudo, a legislação tem limitado a utilização frente a seleção de microrganismos resistentes e a necessidade de respeitar o período de carência do leite. Assim terapias isentas de antibióticos têm sido estudadas. O objetivo deste estudo foi avaliar a eficácia do quelato de cobre e zinco em forma spray no tratamento de lesões de DD. Foram utilizados 39 membros com lesões de DD, provenientes de 36 vacas leiteiras em regime free-stall, divididos em três grupos, sendo o grupo um (G1) tratado com spray sem bandagem, grupo dois (G2) com bandagem durante o período estabelecido para o tratamento, e grupo três (G3) com bandagem nos primeiros três dias. O início do tratamento ocorreu em D0 e em seguida as lesões foram avaliadas no D3 (terceiro dia de tratamento) e D7 (sétimo dia de tratamento) e D10 (décimo e último dia de tratamento). Os animais foram avaliados quanto ao escore de locomoção, e as lesões foram avaliadas por fotografia de forma a cegas por três avaliadores. Os dados foram analisados com os testes de Mann-Whitney, Friedman e teste de Kappa Fleiss (k). Os resultados obtidos não apresentavam diferença estatística entres os grupos para as variáveis analisadas, e ambos os grupos houve melhora do escore de locomoção e regressão do estágio ativo para inativo das lesões. No entanto, ao final do tratamento ainda existia lesões ativas em ambos os grupos. Conclui-se que o tratamento proposto de 10 dias foi insuficiente para a cicatrização completa das lesões, havendo a necessidade de prorrogar os dias de aplicação, considerando que houve regressão significativa das lesões durante o período estabelecido. São necessários mais testes a longo prazo com o objetivo de avaliar a eficácia do produto.
Digital dermatitis (DD) is a foot disease responsible for causing lameness and economic losses in dairy cattle. Treatment involves systemic and/or topical antibiotic therapy, however, legislation has limited its use against the selection of resistant microorganisms and the need to respect the milk withdrawal period. Thus antibiotic-free therapies have been studied. The aim of this study was to evaluate the efficacy of copper and zinc chelate in spray form in the treatment of DD lesions. Thirty-nine limbs with DD lesions were used, from 36 dairy cows in free-stall regime, divided into three groups, being group one (G1) treated with spray without bandage, group two (G2) with bandage during the period established for the treatment, and group three (G3) with bandages in the first three days. The start of treatment occurred on D0 and then lesions were evaluated on D3 (third day of treatment) and D7 (seventh day of treatment) and D10 (tenth and last day of treatment). The animals were evaluated for locomotion score, and injuries were evaluated by photography in a blinded fashion by three evaluators. Data were analyzed using the Mann-Whitney, Friedman and Kappa Fleiss (k) tests. The results obtained showed no statistical difference between the groups for the variables analyzed, and both groups showed an improvement in the locomotion score and regression from the active to inactive stage of the lesions. However, at the end of treatment, there were still active lesions in both groups. It is concluded that the proposed 10-day treatment was insufficient for the complete healing of the lesions, with the need to extend the days of application, considering that there was a significant regression of the lesions during the established period. More long-term testing is needed to assess the product's effectiveness.
Digital dermatitis (DD) is a foot disease responsible for causing lameness and economic losses in dairy cattle. Treatment involves systemic and/or topical antibiotic therapy, however, legislation has limited its use against the selection of resistant microorganisms and the need to respect the milk withdrawal period. Thus antibiotic-free therapies have been studied. The aim of this study was to evaluate the efficacy of copper and zinc chelate in spray form in the treatment of DD lesions. Thirty-nine limbs with DD lesions were used, from 36 dairy cows in free-stall regime, divided into three groups, being group one (G1) treated with spray without bandage, group two (G2) with bandage during the period established for the treatment, and group three (G3) with bandages in the first three days. The start of treatment occurred on D0 and then lesions were evaluated on D3 (third day of treatment) and D7 (seventh day of treatment) and D10 (tenth and last day of treatment). The animals were evaluated for locomotion score, and injuries were evaluated by photography in a blinded fashion by three evaluators. Data were analyzed using the Mann-Whitney, Friedman and Kappa Fleiss (k) tests. The results obtained showed no statistical difference between the groups for the variables analyzed, and both groups showed an improvement in the locomotion score and regression from the active to inactive stage of the lesions. However, at the end of treatment, there were still active lesions in both groups. It is concluded that the proposed 10-day treatment was insufficient for the complete healing of the lesions, with the need to extend the days of application, considering that there was a significant regression of the lesions during the established period. More long-term testing is needed to assess the product's effectiveness.
Descrição
Palavras-chave
Dermatite digital, Quelato de cobre e zinco, Vacas leiteiras, Claudicação, Pododermatite, Digital dermatitis, Lameness, Dairy cows, Copper and zinc chelate