Mycoplasma Mastitis and Prevention

نویسنده

  • Lawrence K. Fox
چکیده

Normally, the three most prevalent contagious mastitis pathogens considered are Staphylococcus aureus, Streptococcus agalactiae and Mycoplasma sp. Streptococcus agalactiae and Mycoplasma sp. are more rare, with less than 5% of operations affected (APHIS, 2008). However, Mycoplasma sp. is increasing in prevalence and more than 21% of large dairies, greater than 500 cows, may be affected in the U.S. (APHIS, 2003). For this reason, mycoplasma mastitis appears to be an emerging mastitis problem (Fox et al., 2003). Recent reports also attest to its global significance, affecting areas previously unreported, as in Prince Edward Island, Canada (Olde Riekerink et al., 2006), Northern Greece (Filioussis et al, 2007), Saudi Arabia (Al Abdullah, 2006), France (Arcangioli et al., 2011), Belgium (Passchyn et al., 2011), Mexico (Miranda-Morales et al., 2008) and Iran (Ghazaei, 2006). Given that mycoplasma mastitis seems to be associated with larger herds (Pinho, 2012APHIS, 2008; Fox et al., 2008; Thomas et al., 1981), and that herd size has been increasing over time, it would seem logical that mycoplasma mastitis has become more prevalent. This would seem a most important risk factor given that the Western USA has the largest dairy farms in the nation (APHIS 2009) and is the fastest growing dairy area, especially when considering cows per dairy herd.

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تاریخ انتشار 2013