饲料研究2025，Vol.48Issue(1)：78-83,6.DOI:10.13557/j.cnki.issn1002-2813.2025.01.014
饲料中添加褐藻提取物对大口黑鲈肌肉氨基酸的影响
Effect of adding brown algae extracts to feed on amino acid of muscle in Micropterus salmoides
摘要
Abstract
The experiment aimed to investigate the effects of adding brown algae extracts to feed on the amino acid composition of muscle in Micropterus salmoides.A total of 630 Micropterus salmoides with good condition and similar body weight(33.33±1.95)g were selected and randomly divided into six groups,with three replicates per group and 35 Micropterus salmoides per replicate.The control group(Group A)was fed a basal diet,while Groups B,C,D,E,and F were fed diets in which wheat flour was replaced with 0.1％sodium alginate,0.1％oligosaccharide Ⅰ,0.1％oligosaccharide Ⅱ,0.2％brown algae powder,and 0.2％brown algae powder hydrolysate,respectively.The test period was 56 days.The results showed that compared to the control group,the crude fat content in the muscle of largemouth bass in Groups C,D,and E was significantly reduced(P＜0.05).Compared to the control group,the methionine(Met)content in all experimental groups was significantly increased(P＜0.05),while the lysine(Lys),isoleucine(Ile),valine(Val),threonine(Thr),leucine(Leu),aspartic acid(Asp),glutamic acid(Glu),and tyrosine(Tyr)contents in Group B were significantly decreased(P＜0.05).The first limiting amino acid in the muscle of largemouth bass in all groups was methionine+cysteine(Met+Cys),and the second limiting amino acid was valine(Val).The essential amino acid index was in the order of Group E＞Group D＞Group F＞Group C＞Group B＞Group A,with F values ranging from 2.34 to 2.44.Amino acid scoring and chemical scoring showed that compared to the control group,the content of methionine+cysteine(Met+Cys)in all Groups was significantly increased(P＜0.05).The study indicated that brown alga extract does not have a negative impact on the conventional nutritional components of Micropterus salmoides muscle.Several brown alga extracts can increase the Met+Cys content in the muscle of Micropterus salmoides.Adding 0.1％sodium alginate to the feed leads to a decrease in the total amino acid content in the muscle of Micropterus salmoides.Adding 0.2％brown alga powder hydrolysate is somewhat beneficial for improving the flavor of Micropterus salmoides muscle.Brown alga extract as a feed additive for Micropterus salmoides can improve the amino acid composition and muscle nutritional value of Micropterus salmoides.关键词
大口黑鲈/褐藻提取物/氨基酸含量/肌肉营养Key words
Micropterus salmoides/brown algae extracts/amino acid content/muscle nutrition分类
水产学引用本文复制引用
沈佳佳,韦云勇,卢波,王巧贞,刘宏祥,王梦然,黄庶识,麻艳群..饲料中添加褐藻提取物对大口黑鲈肌肉氨基酸的影响[J].饲料研究,2025,48(1):78-83,6.基金项目
广西科技基地和人才专项(项目编号:桂科AD17129019) （项目编号:桂科AD17129019）
广西研究生教育创新计划(项目编号:YCSW2024037) （项目编号:YCSW2024037）
