Effect of Dietary Krill Meal Levels on Performance and Immune Response of Broiler Chicks Injected with Salmonella typhimurium Lipopolysaccharide

살모넬라 LPS를 주입한 육계병아리에 있어서 사료 중 크릴 밀 수준이 생산성과 면역반응에 미치는 영향

  • Im, J.T. (Department of Animal Life Sciences, College of Animal Life Sciences, Konkuk University) ;
  • Park, I.K. (Department of Animal Life Sciences, College of Animal Life Sciences, Konkuk University) ;
  • Koh, T.S. (Department of Animal Life Sciences, College of Animal Life Sciences, Konkuk University)
  • 임진택 (건국대학교 동물생명과학대학 동물생명과학부) ;
  • 박인경 (건국대학교 동물생명과학대학 동물생명과학부) ;
  • 고태송 (건국대학교 동물생명과학대학 동물생명과학부)
  • Published : 2007.04.30


In this study, the effects of dietary krill meal levels on cellular immunity in LPS-injected broiler chicks was evaluated. One day-old male broiler chicks(Ross) were fed on the experimental basal meal(0.0% krill meal), or diets containing 0.5%, 1.0% and 2.0% krill for 3 weeks, and the acute phase response was activated by intraperitoneally injection of Salmonella typhimurium lipopolysaccharide(LPS) 3 times at 9, 11, and 13 days of age. 1. Acute phase response induced a significant reduction in(p<0.05) daily weight gain and feed intake, and increases in liver and spleen weight. However, it was not affected by dietary krill meal levels. 2. The krill meal diets reduced TNF-α activity as compared to the basal diet after 24 hours (acute phase response) and 1 week(recovery from the acute phase response) following LPS injection (p<0.05). The acute phase response induced a significant increase(p<0.05) in TNF-α activity relative to the control in chicks fed on a basal diet, but this was also unaffected by dietary krill meal levels. 3. Acute phase response-mediated ovotransferrin levels(relative to what was measured in the control bird) were increased in birds fed on the basal, 1.0% and 2.0% krill diets, and were reduced in birds fed on the 0.5 % krill diet. 4. In LPS-injected chicks, 1.0% and 2.0% krill meal diets induced a significant reduction in(p<0.05) the Con A-induced proliferation of PBMC and splenocytes relative to what was observed in the chicks fed on a 0.5% krill diet, whereas the splenocytes proliferated in a linear fashion with the krill levels in the diets of the control birds. The results showed that the dietary levels of krill meal reduced TNF-α activity in the blood and also influenced blood ovotransferrin levels and the proliferation of PBMC and splenocytes, and krill meal is considered to be associated with both innate and cellular immunity in broiler chicks.


Lipopolysaccharide (LPS);Tumor necrosis factor-$\alpha$(TNF-$\alpha$);Proliferation of PBMC and splenocytes;Krill meal;Broiler chicks


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