Abstract
The objective was to identify subclinical mastitis using California mastitis test (CMT) and to isolate and identify phenotypes of Staphylococcus spp., strains derived from goat milk. A study was conducted from February 2023 to May 2023, in 21 different farms in Santa Cruz de Juventino Rosas, Guanajuato. The detection of subclinical mastitis was carried out using the CMT analyzed the milk of 430 goats; Positive CMT milk samples were tightly closed, refrigerated at 4°C, and transported to the laboratory, where they were cultivated on agar medium for 24 or 48 h. Antimicrobial sensitivity of Staphylococcus strains was evaluated using the disk diffusion technique. 27.6% of the goats were positive for CMT. Several pathogens can cause mastitis, but Staphylococcus spp. are the most frequently diagnosed causal microorganisms of intramammary infections in goats, in bacteriological detection, Staphylococcus haemolyticus, S. hyicus, S. chromogenes, S. caprae and S. epidermidis were identified. Some Staphylococcus isolates were sensitive to cefotaxima. In conclusion, therefore, the control of mastitis in goats should take into account the optimal milking routine and milking hygiene.
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