PREVALENCE AND DIAGNOSIS OF SUBCLINICAL MASTITIS IN GOATS IN EARLY LACTATION | РАЗПРОСТРАНЕНИЕ И ДИАГНОСТИКА НА СУБКЛИНИЧНИТЕ МАСТИТИ ПРИ КОЗИТЕ В НАЧАЛОТО НА ЛАКТАЦИОННИЯ ПЕРИОД
2014
Khristov, K., University of Forestry, Sofia (Bulgaria) | Parvanov, P., University of Forestry, Sofia (Bulgaria) | Popova, T., University of Forestry, Sofia (Bulgaria) | Kashamov, B., National Reference Laboratory for Milk Products, BFSA, Sofia (Bulgaria)
The purpose of this study was to investigate the effectiveness of direct and indirect methods for diagnosis of subclinical mastitis in goats and prevalence of the disease in early lactation. The study included 26 animals of the breed Bulgarian white dairy goat and its crosses, first or second lactation found in early lactation period - 15-20 days after birth. The express diagnostics of subclinical mastitis was carried out using a rapid mastitis test CMT-Test - Kruuse, Denmark and test Porta SCC, USA. After an initial screening for the accurate diagnosis to determine the number of somatic cells by Fossomatic and microbiological testing for isolation of pathogenic microorganisms. The results showed 42.31% prevalence of subclinical mastitis in the early stages of lactation. The isolated microorganisms included: Staphylococcus epidermidis, Staphylococcus caprae, Staphylococcus aureus, Enterobacter spp., Pasteurella multocida, Mannheimia haemolytica, Corynebacterium spp., E. Coli, and Proteus mirabilis. Final analysis showed that the self-administration of the indirect tests for the diagnosis of subclinical mastitis in goats is ineffective in early lactation, but can be used for selection of animals which produce a sterile milk samples for laboratory analysis. In early lactation sub-clinical inflammation mostly affects both halves of the breast, as proof of 500 x 10³ somatic cells in 1 ml of milk secretion is the appropriate limit for the diagnosis of subclinical mastitis in goats.
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