Effect of the probiotic, Lactobacillus plantarum on growth performance and haematological indices of rainbow trout (Oncorhynchus mykiss) immunized with bivalent streptococcosis / lactococcosis vaccine
Publish place: Iranian Journal of Fisheries Sciences، Vol: 18، Issue: 2
Publish Year: 1398
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_JIFRO-18-2_007
تاریخ نمایه سازی: 23 بهمن 1400
Abstract:
The present study evaluated the effect of Lactobacillus plantarum as a probiotic on the growth performance and haematological parameters of juvenile rainbow trout (Oncorhynchus mykiss) weighing ۲۹.۶±۱.۸ g immunized with streptococcus/lactococcus bivalent vaccine for ۶۰ days at ۱۶±۱.۵ºC. Fish were randomly allocated to ۴ equal groups: probiotic (g kg-۱ feed equal to ۱۰۸ cells g-۱) supplemented diet group (group P), vaccinated fish fed with a normal diet (group V), vaccinated fish fed with probiotic (group P+V) and unvaccinated fish fed normal diet (group C). Results showed that weight gain, final weight, condition factor and thermal-unit growth coefficient were improved in P+V group compared with other groups but was significantly different from groups V and C (p<۰.۰۵). Also, feed conversion ratio in the P+V group was lower than other trails (p<۰.۰۵). In addition, white blood cell count (WBC) in groups V and P+V were significantly higher than in both P and C groups (p<۰.۰۵). Also, PCV was significantly increased (p<۰.۰۵) in both P and P+V groups compared to group V and the control group. No significant difference (p>۰.۰۵) was found in RBC, Hb, MCH, MCHC and MCV levels among the different experimental groups. These data show that application of L. plantarum could be a benefit of vaccinated trout, enhancing fish growth and haematological parameters
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Authors
M. Soltani
Department of Aquatic Animal Health, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
A. Kane
Department of Aquatic Animal Health, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
A. Taheri-Mirghaed
Department of Aquatic Animal Health, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
K. Pakzad
Department of Aquatic Animal Health, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
P. Hosseini-Shekarabi
Departmet of Fisheries Science, Faculty of Agriculture and Natural Resources, Science and Research Branch, Islamic Azad University, Tehran, Iran.
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