4Salmon S A, Watts J L, Aarestrup F M, et al. Minimum in- hibitory concentrations for selected antimierobial agents a- gainst organisms isolated from the mammary glands of dairy heifers in New Zealand and Denmark[J]. Journal of Dairy Sci- ence, 1998, 81(2): 570-578.
5E1-Khodery S A, Osman S A. Acute coliform mastitis in buf- faloes (Bubalus bubalis) : Clinical findings and treatment out- comes[J]. Tropical animal health and production, 2008, 40 (2) : 93-99.
6Guerin-Faublee V, Carret G, Houffsehmitt P. In vitro activity of 10 antimicrobial agents against bacteria isolated from cows with clinical mastitis[J]. Veterinary record, 2003, 152 (15) : 466-471.
7Lang I, Rose M, Thomas E, et al. A field study of cefqui- nome for the treatment of pigs with respiratory disease[J]. Revuede medicine veterinaire, 2002, 153(8-9): 575-580.
8Tacconi G, Asdrubali G, Bertorotta G. Evaluation of the effi- cacy of apramycin against Salmonella pullorum infection in chickens[J]. Avian Pathol, 1987, 16(2): 319-326.
9Freidlin P J, Bock R, Bernath A, et al. Apramycin: minimal inhibitory concentrations for avian Escherichia coli and serum levels after intramuscular injection in turkeys[J]. J Vet Phar- macol Ther, 1985, 8(1): 105-109.
10Schlunzen F, Pyetan E, Fucini P, et al. Inhibition of peptide bond formation by pleuromutilins: the structure of the 50S ri- bosomal subunit from Deinococcus radiodurans in complex with tiamulin[J]. Molecular Microbiology, 2004, 54 (5) : 1287- 1294.