bacteial nasal carrige in cattle in jordan

Bovine respiratory diseases causes serious economic losses due to high mortality rate, decrease in production, treatment cost and decrease in growth rate of animals. In this study, 50 nasal swabs from apparently healthy living cattle were collected from October 1998 through December 1998, for detection of nasal bacterial carriage in Jordan. There are several important bacterial isolates such as Corynebacterium spp, Pasteurella haemolytica, Streptococcus spp, Staphylococcus aureus, Escherichia coli, Proteus spp and Pseudomonas spp, were isolated from nasal carriage of apparently healthy animals in 17.07%, 8.53%, 7.31 %, 6.09%, 6.09%, 2.43%, 2.43% respectively. Besides, Micrococcus spp were isolated in 24.39% and Staphylococcus saprophyticus were isolated in 25.09% . It is predicted that some of nasal carriage might be play an important role in cattle pneumonia especially when animal was suffered from stress or suppressed immunity.