Evaluación de la prevalencia de mastitis subclínica en La hacienda Campo Alegre

Abstract

The high prevalence of mastitis in cattle has caused economic losses due to decreased milk production and cow health. The diagnosis of subclinical mastitis is complicated by the lack of visible symptoms and the need for methods such as the California Mastitis Test and culture for effective control. Therefore, the main objective of the research has been to determine the pathogens causing subclinical mastitis in Holstein cows for control and treatment at Campo Alegre Farm, Pichincha Province. The methodology used 68 cows from Campo Alegre Farm under a semi-intensive production system, no experimental design was used since it was a descriptive analysis of samples, considering the California Mastitis Test Reagent, Gram Stain Kit and Violet Crystal and the application of good practices before and after milking, being these factors the cause for the prevalence of the disease in dairy herds. The results determine the prevalence of subclinical mastitis using the California Mastitis Test, showed that 13 cows equivalent to 19% were "positive" for the presence of mastitis, the microbiological tests in the 13 samples studied Absence of Streptococcus agalactiae and Environmental Staphylococcus, on the contrary, the presence of Staphylococcus aureus was identified in 23.08% of the samples, and a coliform count of ≥300 CFU/m in 15.38% of the samples. It is concluded that the factors that affect the presence of mastitis are shocks produced during the transfer from the paddock to the milking parlor, so it is recommended to control subclinical mastitis.