| host factors associated with the detection of aeromonas salmonicida and yersinia ruckeri in ontario, canada government fish hatcheries. | this paper presents an epidemiological investigation of ontario ministry of natural resources fish health laboratory data from 1981 to 1997, to determine whether fish species and age were associated with lot-level detection of aeromonas salmonicida and yersinia ruckeri in hatchery fish. in stepwise logistic regression, the species brook trout and back-cross (lake trout crossed with the hybrid "splake") were more likely to test a. salmonicida-positive compared to all other species reared in the h ... | 2001 | 11311951 |
| simulating the effect of eliminating routine bacterial screening on the negative predictive value of the ontario fish hatchery disease monitoring program. | we determined the impact of eliminating routine screening for aeromonas salmonicida and yersinia ruckeri on the efficacy of the ontario ministry of natural resources (omnr) fish disease monitoring program, using monte carlo simulation. because the main purpose of the program is to prevent transferring infected fish among omnr hatcheries, or to wild fish populations through stocking waterways, the hatchery-level negative predictive value (hnpv) was used as an indicator of monitoring efficacy. the ... | 2001 | 11448498 |