A PRELIMINARY STUDY ON THE EFFECT OF INACTIVATED POLYVALENT MASTITIS VACCINES ON MILK QUANTITY AND QUALITY IN DAIRY BUFFALOES
M. ATHAR, G. MUHAMMAD, A. SHAKOOR, M. SAQIB, R. AHMAD1 AND A. NAUREEN
Four different formalin-inactivated polyvalent mastitis vaccines viz. plain (FPPV), dextran sulphate (DXS) adjuvanted (FDPV), aluminium hydroxide adjuvanted (FAPV) and DXS + aluminium hydroxide adjuvanted (FDAPV) containing Staphylococcus aureus, Streptococcus agalactiae and Escherichia coli were evaluated for 6 months in 100 lactating dairy buffaloes (Bubalus bubalis) on the basis of their effect on milk quality and quantity. Mean somatic cell count in vaccinated buffaloes was significantly (P<0.01) lower than that of the control group. Using a linear somatic cell scoring method, a significantly (P<0.01) higher milk loss (897 L) was observed in control buffaloes as compared to those of vaccinated buffaloes. Buffaloes vaccinated with adjuvanted vaccines (FDPV, FAPV and FDAPV) had a significantly higher (P<0.05) milk yield than those vaccinated either with plain vaccine or kept as unvaccinated control. A non-significant increase in concentrations of milk fat (P = 0.06) and protein (P = 0.08) contents was observed in vaccinated buffaloes.
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