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- Title
The Effect of Kefir as a Dietary Supplement on Nonspecific Immune Response and Disease Resistance in Juvenile Rainbow Trout, Oncorhynchus mykiss (Walbaum 1792).
- Authors
Uluköy, Gülşen; Metin, Seçil; Kubilay, Ayşegül; Güney, Şefik; Yıldırım, Pınar; Güzel‐Seydim, Zeynep; Kok‐Tas, Tugba; Gümüş, Erkan
- Abstract
In this study, juvenile rainbow trout fed with commercial pellets containing kefir provided increased nonspecific immune response and improved disease resistance against lactococcosis and yersiniosis. Kefir was used as a feed supplement at 2, 5, and 10% inclusion rates and several nonspecific immune parameters were observed at day(s) 1, 7, 14, 21, 28, and 35 following the treatment. A total of four experimental groups, including control, was established. The various parameters including hematocrits, nitroblue tetrazolium positive neutrophils, total leukocytes, serum lysozyme activity, total serum protein, and immunoglobulin M (IgM) levels were examined. As a result of this study, kefir-fed fish had an increase in measured nonspecific immune parameters, especially in the group received the 10% kefir treatment. The challenged fish fed with kefir-supplemented diet showed a better survival rate against Lactococcus garvieae than Yersinia ruckeri. Kefir supplementation reduced fish mortality significantly against L. garvieae.
- Subjects
DIETARY supplements; NATURAL immunity; KEFIR; RAINBOW trout; NITROBLUE tetrazolium
- Publication
Journal of the World Aquaculture Society, 2017, Vol 48, Issue 2, p248
- ISSN
0893-8849
- Publication type
Article
- DOI
10.1111/jwas.12336