Effects of dietary lentinan on growth performance, nonspecific immunity and disease resistance to Aeromonas hydrophila in largemouth bass (Micropterus salmoides)

A study was conducted to evaluate the effects of dietary lentinan (LNT) on growth performance, nonspecific immunity and disease resistance to Aeromonas hydrophila in largemouth bass (Micropterus salmoides). Largemouth bass (initial weight: 10.31 ± 0.25 g) were divided into the CK, L1, L2, L3, L4 and...

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Published in:Aquaculture reports 2023-10, Vol.32, p.101696, Article 101696
Main Authors: Wang, Yuzhu, Liu, Wenshu, Li, Xiaoyong, Xin, Yuxiu, Tang, Yanqiang, Xiao, Haihong, Guo, Xiaoze, Li, Siming
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Disease resistance
Growth
Immunity
Largemouth bass
Lentinan
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Li, Siming
description A study was conducted to evaluate the effects of dietary lentinan (LNT) on growth performance, nonspecific immunity and disease resistance to Aeromonas hydrophila in largemouth bass (Micropterus salmoides). Largemouth bass (initial weight: 10.31 ± 0.25 g) were divided into the CK, L1, L2, L3, L4 and L5 groups in triplicate and fed with diets containing LNT at 0%, 0.05%, 0.1%, 0.2%, 0.3% and 0.4% for eight weeks. Results showed that FBW, WGR, SGR and FE were significantly increased in the L3, L4 and L5 groups compared to the CK group. VSI, HSI, crude protein, crude fat and crude ash were similar among different treatment groups. Trypsin and lipase activities of intestinal tract were elevated in the L4 and L5 groups. The length of intestinal microvilli was increased in all experimental groups (P 
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Largemouth bass (initial weight: 10.31 ± 0.25 g) were divided into the CK, L1, L2, L3, L4 and L5 groups in triplicate and fed with diets containing LNT at 0%, 0.05%, 0.1%, 0.2%, 0.3% and 0.4% for eight weeks. Results showed that FBW, WGR, SGR and FE were significantly increased in the L3, L4 and L5 groups compared to the CK group. VSI, HSI, crude protein, crude fat and crude ash were similar among different treatment groups. Trypsin and lipase activities of intestinal tract were elevated in the L4 and L5 groups. The length of intestinal microvilli was increased in all experimental groups (P &lt; 0.05). Lysozyme activity in serum and liver were elevated in the L3, L4 and L5 groups, SOD activity in serum and liver were elevated in the L1, L2, L3 and L4 groups, and CAT activity in serum and liver were elevated in the L4 group. Compared with the CK group, cytokine gene expressions of tnf-α and il-1β in foregut of the L3, L4 and L5 groups were significantly down-regulated (P &lt; 0.05), and the expression of il-10 in the above three groups was significantly up-regulated (P &lt; 0.05). After the Aeromonas hydrophila challenge test, survival rates were higher than 80% in the L4 group and lower than 40% in the CK group. In summary, our study suggested that LNT had a favorable effect on the overall health and growth of largemouth bass, and the optimal dietary concentration was 0.3%. •Dietary lentinan (LNT) enhanced growth performance and improved intestinal structure of juvenile largemouth bass.•LNT could improve immunity and disease resistance to Aeromonas hydrophila in juvenile largemouth bass.•Dietary 0.3% LNT is recommended as the best supplemental level.</description><identifier>ISSN: 2352-5134</identifier><identifier>EISSN: 2352-5134</identifier><identifier>DOI: 10.1016/j.aqrep.2023.101696</identifier><language>eng</language><publisher>Elsevier B.V</publisher><subject>Disease resistance ; Growth ; Immunity ; Largemouth bass ; Lentinan</subject><ispartof>Aquaculture reports, 2023-10, Vol.32, p.101696, Article 101696</ispartof><rights>2023 The Authors</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c364t-9d672342bcf3747bb3d5854040544d4d6879c0d65af7cae9425c57dab8bbe4bb3</cites><orcidid>0009-0002-2187-5802</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S2352513423002351$$EHTML$$P50$$Gelsevier$$Hfree_for_read</linktohtml><link.rule.ids>314,780,784,3549,27924,27925,45780</link.rule.ids></links><search><creatorcontrib>Wang, Yuzhu</creatorcontrib><creatorcontrib>Liu, Wenshu</creatorcontrib><creatorcontrib>Li, Xiaoyong</creatorcontrib><creatorcontrib>Xin, Yuxiu</creatorcontrib><creatorcontrib>Tang, Yanqiang</creatorcontrib><creatorcontrib>Xiao, Haihong</creatorcontrib><creatorcontrib>Guo, Xiaoze</creatorcontrib><creatorcontrib>Li, Siming</creatorcontrib><title>Effects of dietary lentinan on growth performance, nonspecific immunity and disease resistance to Aeromonas hydrophila in largemouth bass (Micropterus salmoides)</title><title>Aquaculture reports</title><description>A study was conducted to evaluate the effects of dietary lentinan (LNT) on growth performance, nonspecific immunity and disease resistance to Aeromonas hydrophila in largemouth bass (Micropterus salmoides). Largemouth bass (initial weight: 10.31 ± 0.25 g) were divided into the CK, L1, L2, L3, L4 and L5 groups in triplicate and fed with diets containing LNT at 0%, 0.05%, 0.1%, 0.2%, 0.3% and 0.4% for eight weeks. Results showed that FBW, WGR, SGR and FE were significantly increased in the L3, L4 and L5 groups compared to the CK group. VSI, HSI, crude protein, crude fat and crude ash were similar among different treatment groups. Trypsin and lipase activities of intestinal tract were elevated in the L4 and L5 groups. The length of intestinal microvilli was increased in all experimental groups (P &lt; 0.05). Lysozyme activity in serum and liver were elevated in the L3, L4 and L5 groups, SOD activity in serum and liver were elevated in the L1, L2, L3 and L4 groups, and CAT activity in serum and liver were elevated in the L4 group. Compared with the CK group, cytokine gene expressions of tnf-α and il-1β in foregut of the L3, L4 and L5 groups were significantly down-regulated (P &lt; 0.05), and the expression of il-10 in the above three groups was significantly up-regulated (P &lt; 0.05). After the Aeromonas hydrophila challenge test, survival rates were higher than 80% in the L4 group and lower than 40% in the CK group. In summary, our study suggested that LNT had a favorable effect on the overall health and growth of largemouth bass, and the optimal dietary concentration was 0.3%. •Dietary lentinan (LNT) enhanced growth performance and improved intestinal structure of juvenile largemouth bass.•LNT could improve immunity and disease resistance to Aeromonas hydrophila in juvenile largemouth bass.•Dietary 0.3% LNT is recommended as the best supplemental level.</description><subject>Disease resistance</subject><subject>Growth</subject><subject>Immunity</subject><subject>Largemouth bass</subject><subject>Lentinan</subject><issn>2352-5134</issn><issn>2352-5134</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2023</creationdate><recordtype>article</recordtype><sourceid>DOA</sourceid><recordid>eNp9kc9uEzEQh1eISq1Kn6AXH0Eiwf92vXvgUFUtVCriQs_WrD1OHO3ai-2A8ji8KU6CECdOtsbz--SZr2luGV0zyroPuzV8T7isOeXiVBm6V80VFy1ftUzI1__cL5ubnHeUUqZEz7i8an49OIemZBIdsR4LpAOZMBQfIJAYyCbFn2VLFkwuphmCwfckxJAXNN55Q_w874MvBwLBVkBGyEgSZp_LsZmUSO4wxTkGyGR7sCkuWz8B8YFMkDY4x33Fj5AzefvFm_pcMO0zyTDN0VvM7940Fw6mjDd_zuvm5fHh2_3n1fPXT0_3d88rIzpZVoPtFBeSj8YJJdU4Ctv2raSStlJaabteDYbargWnDOAgeWtaZWHsxxFlbb9uns5cG2Gnl-TnugsdwetTIaaNhlS8mVAPdBAIgsHQDtIa1TMjpLBSUWf5yFVliTOrDpRzQveXx6g-KtI7fZKmj9L0WVpNfTynsI75w2PS2XisW7Q-VUf1H_6_-d9usaTn</recordid><startdate>202310</startdate><enddate>202310</enddate><creator>Wang, Yuzhu</creator><creator>Liu, Wenshu</creator><creator>Li, Xiaoyong</creator><creator>Xin, Yuxiu</creator><creator>Tang, Yanqiang</creator><creator>Xiao, Haihong</creator><creator>Guo, Xiaoze</creator><creator>Li, Siming</creator><general>Elsevier B.V</general><general>Elsevier</general><scope>6I.</scope><scope>AAFTH</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>DOA</scope><orcidid>https://orcid.org/0009-0002-2187-5802</orcidid></search><sort><creationdate>202310</creationdate><title>Effects of dietary lentinan on growth performance, nonspecific immunity and disease resistance to Aeromonas hydrophila in largemouth bass (Micropterus salmoides)</title><author>Wang, Yuzhu ; Liu, Wenshu ; Li, Xiaoyong ; Xin, Yuxiu ; Tang, Yanqiang ; Xiao, Haihong ; Guo, Xiaoze ; Li, Siming</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c364t-9d672342bcf3747bb3d5854040544d4d6879c0d65af7cae9425c57dab8bbe4bb3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2023</creationdate><topic>Disease resistance</topic><topic>Growth</topic><topic>Immunity</topic><topic>Largemouth bass</topic><topic>Lentinan</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Wang, Yuzhu</creatorcontrib><creatorcontrib>Liu, Wenshu</creatorcontrib><creatorcontrib>Li, Xiaoyong</creatorcontrib><creatorcontrib>Xin, Yuxiu</creatorcontrib><creatorcontrib>Tang, Yanqiang</creatorcontrib><creatorcontrib>Xiao, Haihong</creatorcontrib><creatorcontrib>Guo, Xiaoze</creatorcontrib><creatorcontrib>Li, Siming</creatorcontrib><collection>ScienceDirect Open Access Titles</collection><collection>Elsevier:ScienceDirect:Open Access</collection><collection>CrossRef</collection><collection>DOAJ Directory of Open Access Journals</collection><jtitle>Aquaculture reports</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Wang, Yuzhu</au><au>Liu, Wenshu</au><au>Li, Xiaoyong</au><au>Xin, Yuxiu</au><au>Tang, Yanqiang</au><au>Xiao, Haihong</au><au>Guo, Xiaoze</au><au>Li, Siming</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Effects of dietary lentinan on growth performance, nonspecific immunity and disease resistance to Aeromonas hydrophila in largemouth bass (Micropterus salmoides)</atitle><jtitle>Aquaculture reports</jtitle><date>2023-10</date><risdate>2023</risdate><volume>32</volume><spage>101696</spage><pages>101696-</pages><artnum>101696</artnum><issn>2352-5134</issn><eissn>2352-5134</eissn><abstract>A study was conducted to evaluate the effects of dietary lentinan (LNT) on growth performance, nonspecific immunity and disease resistance to Aeromonas hydrophila in largemouth bass (Micropterus salmoides). Largemouth bass (initial weight: 10.31 ± 0.25 g) were divided into the CK, L1, L2, L3, L4 and L5 groups in triplicate and fed with diets containing LNT at 0%, 0.05%, 0.1%, 0.2%, 0.3% and 0.4% for eight weeks. Results showed that FBW, WGR, SGR and FE were significantly increased in the L3, L4 and L5 groups compared to the CK group. VSI, HSI, crude protein, crude fat and crude ash were similar among different treatment groups. Trypsin and lipase activities of intestinal tract were elevated in the L4 and L5 groups. The length of intestinal microvilli was increased in all experimental groups (P &lt; 0.05). Lysozyme activity in serum and liver were elevated in the L3, L4 and L5 groups, SOD activity in serum and liver were elevated in the L1, L2, L3 and L4 groups, and CAT activity in serum and liver were elevated in the L4 group. Compared with the CK group, cytokine gene expressions of tnf-α and il-1β in foregut of the L3, L4 and L5 groups were significantly down-regulated (P &lt; 0.05), and the expression of il-10 in the above three groups was significantly up-regulated (P &lt; 0.05). After the Aeromonas hydrophila challenge test, survival rates were higher than 80% in the L4 group and lower than 40% in the CK group. In summary, our study suggested that LNT had a favorable effect on the overall health and growth of largemouth bass, and the optimal dietary concentration was 0.3%. •Dietary lentinan (LNT) enhanced growth performance and improved intestinal structure of juvenile largemouth bass.•LNT could improve immunity and disease resistance to Aeromonas hydrophila in juvenile largemouth bass.•Dietary 0.3% LNT is recommended as the best supplemental level.</abstract><pub>Elsevier B.V</pub><doi>10.1016/j.aqrep.2023.101696</doi><orcidid>https://orcid.org/0009-0002-2187-5802</orcidid><oa>free_for_read</oa></addata></record>
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subjects Disease resistance
Growth
Immunity
Largemouth bass
Lentinan
title Effects of dietary lentinan on growth performance, nonspecific immunity and disease resistance to Aeromonas hydrophila in largemouth bass (Micropterus salmoides)
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