ESTUDO DE CASO DA OCORRÊNCIA DE MASTITE CLÍNICA E SUBCLÍNICA NO REBANHO LEITEIRO DO IF GOIANOA CAMPUS CERES

Abstract

Bovine mastitis consists of inflammation of the mammary gland and is considered an important disease for dairy cattle, due to the high incidence of clinical and subclinical cases and the economic losses it causes. The present study aimed to survey the occurrence of clinical and subclinical mastitis in the dairy cattle herd of Instituto Federal Goiano Campus Ceres and to verify the risk factors related to its occurrence. The work was carried out from April to June 2022, in which clinical and subclinical mastitis diagnostic tests were performed (Caneca do Fundo Preto and CMT, respectively), in 22 lactating Girolanda cows every 15 days. The results of clinical and subclinical mastitis diagnostic tests were related to the general handling of animals, facilities and procedures before, during and after milking. The prevalence of clinical mastitis in the herds was 2.6% and subclinical mastitis was 45.5%, with 14.3% for the mild score (+), 10.6% for the moderate score (++) and 20 .6% for severe score (+++). As for the evolution of mastitis during the experimental period, there was an increase in the score 0 of the CMT Test (absence of mastitis) over time until the penultimate collection, while the score +++ in the CMT, which represents a greater severity mastitis, showed an inverse behavior compared to score 0, with a reduction in its prevalence throughout the collections. These results may be associated with the adoption of hygienic-sanitary measures during the experimental period that were not being done before, such as post-dipping and adoption of the milking line. The results of this work reveal a high frequency of bovine mastitis in the dairy herd of Instituto Federal Goiano Campus Ceres, Ceres-Go, mainly in the subclinical form, and that failures in the hygienicsanitary management of milking must be corrected for the prevention and control of the disease.