Effect of feed additive supplementation on bovine subclinical mastitis

Bovine mastitis is an important commercial and sanitary cost in milk production. The prevention treatment of this disease essentially based on the use antibiotics that have limited effectiveness can negatively affect quality. aim study was to evaluate alternative a symbiotic control subclinical (SCM), improvement quality produced dairy farm north-central Algeria. 68 cows collected analysed by somatic cell count bacteriological analysis. Three samples were taken at one-month intervals. first sample before administration feed additive (SYMBIOVEBA®) lactating cows. Animals divided into two groups effects (curative preventive) symbiotic. Each group further subgroups, where one received other control. prevalence 33.82%. Bacterial identification performed using classical methods only with mastitis; total 13 bacterial species isolated from three samples. Staphylococci dominant, frequency 45%, followed Enterobacteriaceae (40%). These rates considerably lower both though treated showed 100% cure rate for Enterobacteriaceae. Individual (ISCC) all groups, revealed threshold (S) 200,000 cells/mL, SYMBIOVEBA®-treated cow subgroup compared 62.5% (P<0.05).