Optimal dietary phospholipid requirement for juvenile leopard coral grouper (Plectropomus leopardus).

IF 2.7 2区 农林科学 Q1 AGRICULTURE, DAIRY & ANIMAL SCIENCE
Xiangqin Lin, Yixiong Cao, Xuehan Wang, Xiaoxue Meng, Junming Deng, Beiping Tan
{"title":"Optimal dietary phospholipid requirement for juvenile leopard coral grouper (Plectropomus leopardus).","authors":"Xiangqin Lin, Yixiong Cao, Xuehan Wang, Xiaoxue Meng, Junming Deng, Beiping Tan","doi":"10.1093/jas/skaf096","DOIUrl":null,"url":null,"abstract":"<p><p>The highly sought-after carnivorous leopard coral grouper (Plectropomus leopardus) in seawater is valued for its vivid coloration and nutritional richness. Dietary phospholipid supplementation has been demonstrated to enhance physiological health in fish, but these effects are species-dependent. Despite its popularity, there is scarce study regarding the effects of dietary phospholipids on P. leopardus. To determine the optimal dietary phospholipid requirement for P. leopardus, six isonitrogenous (53% crude protein) and isolipidic (12% crude lipid) diets were formulated with varying levels (0%, 1%, 2%, 3%, 4%, and 5%) of phospholipid provided by soybean lecithin (SL). Juvenile P. leopardus with an average initial weight (13.92 g) underwent a 9-week feeding trial. Results demonstrated that weight gain rate (WGR) tended to elevate firstly with the dietary SL content up to 3%, and subsequently diminished. The feed conversion ratio (FCR) gradually declined with dietary SL level up to 2% and then stabilized. The incorporation of 2‒5% SL into the diet led to an enhancement of trypsin and lipase activities in the foregut. Additionally, the higher muscular layer thickness, villus width, and villus height in the hindgut were observed with the same dosage of dietary SL. Similarly, the dietary inclusion of 2-3% SL boosted the serum and hepatic superoxide dismutase (SOD) activity, along with enhancing the activities of glutathione peroxidase (GSH-Px) and lysozyme (LZM) in liver and hindgut. Furthermore, the dietary incorporation of 2% SL led to an upregulation of the relative mRNA levels of toll-like receptor 2 (TLR 2), myeloid differentiation factor 88 (MyD88), and transforming growth factor β1 (TGFβ1) in the hindgut, but decreased the aspartate aminotransferase (AST) and alanine aminotransferase (ALT) activities in serum. Overall, dietary incorporation of 2‒3% SL improved the growth rate, digestive function, antioxidant and immune responses of P. leopardus, the recommended level was 3% based on WGR.</p>","PeriodicalId":14895,"journal":{"name":"Journal of animal science","volume":" ","pages":""},"PeriodicalIF":2.7000,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of animal science","FirstCategoryId":"97","ListUrlMain":"https://doi.org/10.1093/jas/skaf096","RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"AGRICULTURE, DAIRY & ANIMAL SCIENCE","Score":null,"Total":0}
引用次数: 0

Abstract

The highly sought-after carnivorous leopard coral grouper (Plectropomus leopardus) in seawater is valued for its vivid coloration and nutritional richness. Dietary phospholipid supplementation has been demonstrated to enhance physiological health in fish, but these effects are species-dependent. Despite its popularity, there is scarce study regarding the effects of dietary phospholipids on P. leopardus. To determine the optimal dietary phospholipid requirement for P. leopardus, six isonitrogenous (53% crude protein) and isolipidic (12% crude lipid) diets were formulated with varying levels (0%, 1%, 2%, 3%, 4%, and 5%) of phospholipid provided by soybean lecithin (SL). Juvenile P. leopardus with an average initial weight (13.92 g) underwent a 9-week feeding trial. Results demonstrated that weight gain rate (WGR) tended to elevate firstly with the dietary SL content up to 3%, and subsequently diminished. The feed conversion ratio (FCR) gradually declined with dietary SL level up to 2% and then stabilized. The incorporation of 2‒5% SL into the diet led to an enhancement of trypsin and lipase activities in the foregut. Additionally, the higher muscular layer thickness, villus width, and villus height in the hindgut were observed with the same dosage of dietary SL. Similarly, the dietary inclusion of 2-3% SL boosted the serum and hepatic superoxide dismutase (SOD) activity, along with enhancing the activities of glutathione peroxidase (GSH-Px) and lysozyme (LZM) in liver and hindgut. Furthermore, the dietary incorporation of 2% SL led to an upregulation of the relative mRNA levels of toll-like receptor 2 (TLR 2), myeloid differentiation factor 88 (MyD88), and transforming growth factor β1 (TGFβ1) in the hindgut, but decreased the aspartate aminotransferase (AST) and alanine aminotransferase (ALT) activities in serum. Overall, dietary incorporation of 2‒3% SL improved the growth rate, digestive function, antioxidant and immune responses of P. leopardus, the recommended level was 3% based on WGR.

求助全文
约1分钟内获得全文 求助全文
来源期刊
Journal of animal science
Journal of animal science 农林科学-奶制品与动物科学
CiteScore
4.80
自引率
12.10%
发文量
1589
审稿时长
3 months
期刊介绍: The Journal of Animal Science (JAS) is the premier journal for animal science and serves as the leading source of new knowledge and perspective in this area. JAS publishes more than 500 fully reviewed research articles, invited reviews, technical notes, and letters to the editor each year. Articles published in JAS encompass a broad range of research topics in animal production and fundamental aspects of genetics, nutrition, physiology, and preparation and utilization of animal products. Articles typically report research with beef cattle, companion animals, goats, horses, pigs, and sheep; however, studies involving other farm animals, aquatic and wildlife species, and laboratory animal species that address fundamental questions related to livestock and companion animal biology will be considered for publication.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信