| strains of infectious bronchitis virus on the delmarva peninsula and in arkansas. | the constant-virus variable-serum neutralization test in chicken tracheal cultures was used to serotype infectious bronchitis virus (ibv) isolants from the delmarva peninsula and arkansas. of 106 isolants obtained from delmarva in 1971-1974, 93 were found to be the jmk strain, 5 massachusetts (mass), 5 connecticut (conn), 2 a new strain designated maryland (md) 27, and 1 a new strain designated md 31. of 26 isolants obtained from arkansas between october, 1971, and february, 1973, 17 were arkans ... | 1976 | 180960 |
| isolation and identification of ornithobacterium rhinotracheale from commercial broiler flocks on the delmarva peninsula. | the growth and biological characteristics of isolates of ornithobacterium rhinotracheale (ort) from commercial broiler chickens in the mid-atlantic region of the u.s.a. appear to be identical to those previously reported in the literature. the clinical disease and lesions are also similar to those reported from other poultry growing regions including south africa and europe. the diagnostic cases included in this report were often associated with known respiratory pathogens, namely, lentogenic ne ... | 1997 | 9087345 |