Effects of Assam tea extract on growth, skin mucus, serum immunity and disease resistance of Nile tilapia (Oreochromis niloticus) against Streptococcus agalactiae

© 2019 Elsevier Ltd The present study aimed to assess the possible effects of Assam tea (Camellia sinensis) extract (ATE) on growth performances, immune responses, and disease resistance of Nile tilapia, Oreochromis niloticus against Streptococcus agalactiae. Five levels of ATE were supplemented int...

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Main Authors: Hien Van Doan, Seyed Hossein Hoseinifar, Korawan Sringarm, Sanchai Jaturasitha, Bundit Yuangsoi, Mahmoud A.O. Dawood, Maria Ángeles Esteban, E. Ringø, Caterina Faggio
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Published: 2019
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http://cmuir.cmu.ac.th/jspui/handle/6653943832/66546
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spelling th-cmuir.6653943832-665462019-09-16T12:52:48Z Effects of Assam tea extract on growth, skin mucus, serum immunity and disease resistance of Nile tilapia (Oreochromis niloticus) against Streptococcus agalactiae Hien Van Doan Seyed Hossein Hoseinifar Korawan Sringarm Sanchai Jaturasitha Bundit Yuangsoi Mahmoud A.O. Dawood Maria Ángeles Esteban E. Ringø Caterina Faggio Agricultural and Biological Sciences Environmental Science © 2019 Elsevier Ltd The present study aimed to assess the possible effects of Assam tea (Camellia sinensis) extract (ATE) on growth performances, immune responses, and disease resistance of Nile tilapia, Oreochromis niloticus against Streptococcus agalactiae. Five levels of ATE were supplemented into the based diet at 0, 1, 2, 4, and 8 g kg−1 feed of Nile tilapia fingerlings (10.9 ± 0.04 g initial weight) in triplicate. After four and eight weeks of feeding, fish were sampled to determine the effects of the tea supplements upon their growth performance, as well as serum and mucosal immune responses. A disease challenge using S. agalactiae was conducted at the end of the feeding trial. Fish fed ATE revealed significantly improved serum lysozyme, peroxidase, alternative complement (ACH50), phagocytosis, and respiratory burst activities compared to the basal control fed fish (P < 0.05). The mucus lysozyme and peroxidase activities were ameliorated through ATE supplementation in the tilapia diets. Supplementation of ATE significantly (P < 0.05) enhanced final body weight, weight gain, and specific growth rate; while a decreased feed conversion ratio was revealed at 2 g kg−1 inclusion level, after four and eight weeks. Challenge test showed that the relative percent survival (RSP) of fish in each treatment was 33.33%, 60.00%, 83.33%, 76.68%, and 66.68% in groups fed 0, 1, 2, 4, and 8 g kg−1, respectively. In summary, diets supplemented with ATE especially at 2 g kg−1 increased the humoral and mucosal immunity, enhanced growth performance, and offered higher resistance against S. agalactiae infection in Nile tilapia. 2019-09-16T12:45:43Z 2019-09-16T12:45:43Z 2019-10-01 Journal 10959947 10504648 2-s2.0-85069966919 10.1016/j.fsi.2019.07.077 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85069966919&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/66546
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
topic Agricultural and Biological Sciences
Environmental Science
spellingShingle Agricultural and Biological Sciences
Environmental Science
Hien Van Doan
Seyed Hossein Hoseinifar
Korawan Sringarm
Sanchai Jaturasitha
Bundit Yuangsoi
Mahmoud A.O. Dawood
Maria Ángeles Esteban
E. Ringø
Caterina Faggio
Effects of Assam tea extract on growth, skin mucus, serum immunity and disease resistance of Nile tilapia (Oreochromis niloticus) against Streptococcus agalactiae
description © 2019 Elsevier Ltd The present study aimed to assess the possible effects of Assam tea (Camellia sinensis) extract (ATE) on growth performances, immune responses, and disease resistance of Nile tilapia, Oreochromis niloticus against Streptococcus agalactiae. Five levels of ATE were supplemented into the based diet at 0, 1, 2, 4, and 8 g kg−1 feed of Nile tilapia fingerlings (10.9 ± 0.04 g initial weight) in triplicate. After four and eight weeks of feeding, fish were sampled to determine the effects of the tea supplements upon their growth performance, as well as serum and mucosal immune responses. A disease challenge using S. agalactiae was conducted at the end of the feeding trial. Fish fed ATE revealed significantly improved serum lysozyme, peroxidase, alternative complement (ACH50), phagocytosis, and respiratory burst activities compared to the basal control fed fish (P < 0.05). The mucus lysozyme and peroxidase activities were ameliorated through ATE supplementation in the tilapia diets. Supplementation of ATE significantly (P < 0.05) enhanced final body weight, weight gain, and specific growth rate; while a decreased feed conversion ratio was revealed at 2 g kg−1 inclusion level, after four and eight weeks. Challenge test showed that the relative percent survival (RSP) of fish in each treatment was 33.33%, 60.00%, 83.33%, 76.68%, and 66.68% in groups fed 0, 1, 2, 4, and 8 g kg−1, respectively. In summary, diets supplemented with ATE especially at 2 g kg−1 increased the humoral and mucosal immunity, enhanced growth performance, and offered higher resistance against S. agalactiae infection in Nile tilapia.
format Journal
author Hien Van Doan
Seyed Hossein Hoseinifar
Korawan Sringarm
Sanchai Jaturasitha
Bundit Yuangsoi
Mahmoud A.O. Dawood
Maria Ángeles Esteban
E. Ringø
Caterina Faggio
author_facet Hien Van Doan
Seyed Hossein Hoseinifar
Korawan Sringarm
Sanchai Jaturasitha
Bundit Yuangsoi
Mahmoud A.O. Dawood
Maria Ángeles Esteban
E. Ringø
Caterina Faggio
author_sort Hien Van Doan
title Effects of Assam tea extract on growth, skin mucus, serum immunity and disease resistance of Nile tilapia (Oreochromis niloticus) against Streptococcus agalactiae
title_short Effects of Assam tea extract on growth, skin mucus, serum immunity and disease resistance of Nile tilapia (Oreochromis niloticus) against Streptococcus agalactiae
title_full Effects of Assam tea extract on growth, skin mucus, serum immunity and disease resistance of Nile tilapia (Oreochromis niloticus) against Streptococcus agalactiae
title_fullStr Effects of Assam tea extract on growth, skin mucus, serum immunity and disease resistance of Nile tilapia (Oreochromis niloticus) against Streptococcus agalactiae
title_full_unstemmed Effects of Assam tea extract on growth, skin mucus, serum immunity and disease resistance of Nile tilapia (Oreochromis niloticus) against Streptococcus agalactiae
title_sort effects of assam tea extract on growth, skin mucus, serum immunity and disease resistance of nile tilapia (oreochromis niloticus) against streptococcus agalactiae
publishDate 2019
url https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85069966919&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/66546
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