Detection ofRenibacterium salmoninarumInfection in Asymptomatic Atlantic Salmon
- 1 June 1994
- journal article
- Published by Oxford University Press (OUP) in Journal of Aquatic Animal Health
- Vol. 6 (2) , 126-132
- https://doi.org/10.1577/1548-8667(1994)006<0126:dorsii>2.3.co;2
Abstract
Challenge of Atlantic salmon Salmo salar by intraperitoneal injection with Renibaclerium salmoninarum at low temperature (7–8°C) caused the fish to become asymptomatically infected. Although no overt clinical signs appeared and no deaths occurred for 14 weeks postinfection, most live sampled fish (65% from tank 1 and 55% from tank 2) from weeks 2 to 17 postinfection had low levels of R. salmoninarum, as indicated by colony-forming units (cfu) per gram of kidney tissue cultured. Only 5–6% of kidney samples from tank-1 fish and none from tank-2 fish tested positive (and those were only weakly positive) for R. salmoninarum soluble antigens by Western blot. Even though the fish holding temperature was increased to 10–1 PC on week 13 postinfection, only a low number of fish died (14 in tank 1 and 5 in tank 2) from weeks 15 to 29. By weeks 27 and 31 postinfection, no live sampled fish had detectable R. salmoninarum cfu per gram of kidney tissue cultured. After 31 weeks postinfection, only 4% of live sa...Keywords
This publication has 0 references indexed in Scilit: