ENHANCEMENT OF RESISTANCE TO BACTERIAL-INFECTION IN RAINBOW-TROUT, ONCORHYNCHUS-MYKISS (WALBAUM), BY ORAL-ADMINISTRATION OF BOVINE LACTOFERRIN

被引:78
作者
SAKAI, M
OTUBO, T
ATSUTA, S
KOBAYASHI, M
机构
[1] School of Fisheries Sciences, Kitasato University, Iwate
关键词
D O I
10.1111/j.1365-2761.1993.tb01253.x
中图分类号
S9 [水产、渔业];
学科分类号
0908 ;
摘要
Bovine lactoferrin was evaluated for its ability to enhance resistance of rainbow trout, Oncorhynchus mykiss (Walbaum), to infection with Vibrio anguillarum. Oral administration of lactoferrin (100 mg kg-1) to fish daily for 3 days prior to an intraperitoneal challenge with V. anguillarum resulted in increased survival rates, and enhanced resistance against Streptococcus sp., although to a lesser extent. In lactoferrin-treated fish, an increase in phagocytic and chemiluminescent (CL) activities of pronephros cells against V. anguillarum was observed. The phagocytic and CL activities of cells against Streptococcus sp. were also significantly increased. However, no in vitro bactericidal activities of lactoferrin against V. anguillarum or Streptococcus sp. were observed. This suggests that the lactoferrin enhanced the resistance of the rainbow trout against bacterial infection through the activation of phagocytes.
引用
收藏
页码:239 / 247
页数:9
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