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Abstract
The aim of the present study was to diagnose clinical and subclinical bovine mastitis in a property in the municipality of Carambeí-PR. 86 dairy cows were diagnosed in two evaluations carried out on July 23 and November 4, 2020. The detection of clinical mastitis was performed by testing the black-bottomed mug, whereas the detection of animals with sub-clinical mastitis by the California Mastitis Test (CMT) and laboratory analysis of bacteria and fungi present. In the first evaluation, 9.4% of the animals had mastitis, while in the second 5.16% of the herd. The milk of the animals that tested positive were submitted to laboratory analysis. In the first evaluation, they were diagnosed with an incidence of 15% Escherichia coli, 15% Prothoteca / yeast, 23% Staphlococcus aureus, 46% Streptococcus agalactiae. In the second evaluation, there was an incidence of 25% Enterococcus sp. and 25% S. agalactiae, the other animals showed 50% Staphlococcus non aureus. There was a higher occurrence of subclinical mastitis in the property, in both evaluations. There was a reduction from the first to the second evaluation in the incidence of cases of subclinical mastitis and the cases of clinical mastitis were resolved. Contributing to the lower disposal of milk caused by the high somatic cell count.
Highlights
The milk production chain has great importance for the Brazilian economy, generates jobs, income and, in many places, still maintains it social function, due to family production
Held on July 23, 2020, a total of eleven cases of mastitis were identified on the property, among them four were clinical mastitis and seven of subclinical mastitis
Subclinical mastitis was identified in the California Mastitis Test (CMT) test, which shows a high concentration of CCS (Figure 1)
Summary
The milk production chain has great importance for the Brazilian economy, generates jobs, income and, in many places, still maintains it social function, due to family production. The southern region of Brazil is the largest producer of milk. Dairy production has a major problem, mastitis, which consists of an infection of the mammary gland. It is responsible for major economic losses, for causing a reduction in the production and quality of milk in the affected mammary quarters, in addition to interfering in the industrial dairy process (França et al, 2017; Terra et al, 2020). The loss of production can be drastic, especially when a significant percentage of the herd is infected, which can reduce milk production by up to 50% in addition to decreasing the productive life of the cow (Mostert et al, 2018)
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