Booster immersion vaccination using diluted Yersinia ruckeri bacterin confers protection against ERM in rainbow trout
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Booster immersion vaccination using diluted Yersinia ruckeri bacterin confers protection against ERM in rainbow trout. / Chettri, Jiwan Kumar; Mohammad, Rezkar Jaafar; Skov, Jakob; Kania, Per Walter; Dalsgaard, Inger; Buchmann, Kurt.
In: Aquaculture, Vol. 440, 2015, p. 1-5.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Booster immersion vaccination using diluted Yersinia ruckeri bacterin confers protection against ERM in rainbow trout
AU - Chettri, Jiwan Kumar
AU - Mohammad, Rezkar Jaafar
AU - Skov, Jakob
AU - Kania, Per Walter
AU - Dalsgaard, Inger
AU - Buchmann, Kurt
PY - 2015
Y1 - 2015
N2 - A single immersion vaccination of rainbow trout fry using a Yersinia ruckeri bacterin confers immunity to reinfection but only for a shorter period. A longer protective period is needed in practical trout farming and we have shown that booster vaccination prolongs immunity. Due to economic considerations and management practices it is not possible to immersion vaccinate large trout (20–30 g) with the recommended high bacterin concentration. We here demonstrate that booster vaccination using dilutions of the bacterin (1:100, 1:1000 and 1:2000) with increased exposure time (1 h, 2 h) confers a higher and longer lasting immunity although a short term (30 s) booster in 1:10 bacterin proved superior. This has practical implications for fish farmers because this diluted booster vaccination over longer time can be applied when farmers handle and transport fish between ponds and farms. Therefore such a practice will not challenge farm management and economy. Increased antibody levels were recorded after challenge of vaccinated fish but not after immersion vaccination alone which suggests that immersion induces priming of memory cells.
AB - A single immersion vaccination of rainbow trout fry using a Yersinia ruckeri bacterin confers immunity to reinfection but only for a shorter period. A longer protective period is needed in practical trout farming and we have shown that booster vaccination prolongs immunity. Due to economic considerations and management practices it is not possible to immersion vaccinate large trout (20–30 g) with the recommended high bacterin concentration. We here demonstrate that booster vaccination using dilutions of the bacterin (1:100, 1:1000 and 1:2000) with increased exposure time (1 h, 2 h) confers a higher and longer lasting immunity although a short term (30 s) booster in 1:10 bacterin proved superior. This has practical implications for fish farmers because this diluted booster vaccination over longer time can be applied when farmers handle and transport fish between ponds and farms. Therefore such a practice will not challenge farm management and economy. Increased antibody levels were recorded after challenge of vaccinated fish but not after immersion vaccination alone which suggests that immersion induces priming of memory cells.
U2 - 10.1016/j.aquaculture.2015.01.027
DO - 10.1016/j.aquaculture.2015.01.027
M3 - Journal article
VL - 440
SP - 1
EP - 5
JO - Aquaculture
JF - Aquaculture
SN - 0044-8486
ER -
ID: 131163141