南方农业学报2025，Vol.56Issue(1)：334-342,9.DOI:10.3969/j.issn.2095-1191.2025.01.030
地衣芽孢杆菌对草鱼生长性能、肌肉品质及土腥味防控的影响
Effects of Bacillus licheniformis on the growth performance,muscle quality and earthy odor control of grass carp(Ctenopharyngodon idellus)
摘要
Abstract
[Objective]To investigate the effects of Bacillus licheniformis on the growth performance,muscle quality and earthy odor control of grass carp(Ctenopharyngodon idellus),which could provide reference for the prevention and control of earthy odor in cultured C.idellus and the improvement of muscle quality.[Method]A total of 360 C.idellus(with an initial weight of 25.00±1.50 g)were randomly divided into 4 groups:T1(fed with basic diet),T2(fed with B.licheniformis diet),T3(fed with basic diet adding Streptomyces thermocarboxydus and S.cyaneofuscatus),T4(fed with B.licheniformis diet adding S.thermocarboxydus and S.cyaneofuscatus).After a 30 d feeding trial,the effects of B.li-cheniformis on grass carp growth performance,muscle texture characteristics,muscle conventional nutrient content,muscle fatty acid content and earthy odor substance concentration were detected.[Result]The addition of B.licheniformis could effectively improve the growth performance and muscle texture characteristics of C.idellus.Compared with the T1 group,the weight gain rate and specific growth rate of the T2 group were significantly increased(P<0.05,the same be-low).The muscle hardness of the T2 and T4 groups was significantly greater than that of the T1 and T3 groups.The addi-tion of B.licheniformis to feed could effectively enhance the muscle quality of C.idellus.The crude protein content and to-tal polyunsaturated fatty acid content in the muscles of the T2 and T4 groups were significantly higher than those of the T1 and T3 groups respectively,and the contents of docosahexaenoic acid,eicosapentaenoic acid and arachidonic acid were all significantly higher than those of the T3 group.The addition of B.licheniformis to feed could effectively reduce the earthy odor substance concentration in C.idellus muscle,with group T2 showing significantly lower geosmin(GSM)concentration than T1,T3 and T4 groups.The 2-methylisoborneol(2-MIB)concentration in group T3 was significantly higher than in T1,T2 and T4 groups.Correlation analysis results indicated that the concentrations of GSM and 2-MIB were both negatively correlated with the total content of polyunsaturated fatty acids,and the concentration of GSM was significantly and positively correlated with the crude fat content.[Conclusion]Adding B.licheniformis to the basic diet can enhance the growth performance of C.idellus,optimize muscle nutritional composition,improve texture characteris-tics and reduce earthy odor substance accumulation in muscle.B.licheniformis may reduce the accumulation of earthy odor substance in C.idellus muscle by regulating fatty acid metabolism.关键词
草鱼/地衣芽孢杆菌/生长性能/肌肉品质/土臭素/2-甲基异莰醇Key words
Ctenopharyngodon idellus/Bacillus licheniformis/growth performance/muscle quality/geosmin/2-methylisoborneol分类
农业科技引用本文复制引用
纪霜,刘利平,李慷,靳锡辰,罗雪能,沈紫倩,谢斌,韩焕,张峻铭,刘至治..地衣芽孢杆菌对草鱼生长性能、肌肉品质及土腥味防控的影响[J].南方农业学报,2025,56(1):334-342,9.基金项目
国家重点研发计划项目(2023YFD2400504) （2023YFD2400504）
上海市科技兴农技术创新项目(沪农科创字[2021]第3-1号) National Key Research and Development Program of China(2023YFD2400504) （沪农科创字[2021]第3-1号）
Shanghai Science and Technology Innovation Project for Agricultural Development(HNKCZ[2021]3-1) （HNKCZ[2021]3-1）
