水生生物学报2025，Vol.49Issue(11)：49-58,10.DOI:10.3724/1000-3207.2025.2025.0153
不同投喂水平对大口黑鲈生长及肌肉品质的影响
DIFFERENT FEEDING PATTERNS ON GROWTH AND MUSCLE QUALITY IN MICROPTERUS SALMOIDES
摘要
Abstract
With the expansion of aquaculture production and transformations in farming models and structures,it has become an important issue for balancing the output and quality of aquatic products,and promoting resource efficiency and cost-effectiveness in aquaculture.To investigate the effects of different feeding patterns on growth performance and muscle quality in Micropterus salmoides,three feeding strategies were implemented:satiation feeding(SF),mode-rate feed restriction(70%,MFR),and high feed restriction(30%,HFR).After 28d of satiation feeding,compared to the MFR group,the SF group showed a 32.99%decrease in feed utilization(P<0.05),a 22.63%and 180%increase in liver body index and spleen body index,respectively(P<0.05).Additionally,a 6.97%decrease in empty shell weight(P<0.05),a decrease in muscle moisture content,a 58.09%increase in crude fat content,a 3.77%decrease in crude protein content(P<0.05),a 21.40%decrease in total amino acid content(P<0.05),and a 31.29%increase in muscle hardness(P<0.05).The myofiber interstitials increased,the bright and dark bands of muscle fibers became less distinct,and substantial interstitial fat accumulated.The muscle growth-promoting genes myog and myf6 were significantly down-regulated(P<0.05),the growth-inhibiting gene mstn was significantly up-regulated(P<0.05),and the genes related to liver and muscle fat synthesis were significantly up-regulated(P<0.05).Compared with the the MFR group,the specific growth rate of the HFR group was significantly reduced by 90.86%(P<0.05)and an 82.23%decrease in feed utilization rate(P<0.05).The muscle crude protein content reduced by 9.63%,while the total amino acid content increased by 15.45%(P<0.05).The myog gene was significantly down-regulated(P<0.05),and muscle fibers showed varying degrees of damage.In conclusion,moderate food restriction can enhance the muscle quality of M.salmoides,improve feed utilization,reduce feed consumption,promote group health,reduce farming costs,and provide a new breeding mode for enhancing efficiency and conserving feed resources.关键词
投喂水平/饱食投喂/生长/肌肉品质/大口黑鲈Key words
Feeding pattern/Satiation feeding/Growth/Muscle quality/Micropterus salmoides分类
农业科技引用本文复制引用
翁泽鵾,曾琪,张凌康,孙悦佳,杨军,李莉娟,顾泽茂,袁军法..不同投喂水平对大口黑鲈生长及肌肉品质的影响[J].水生生物学报,2025,49(11):49-58,10.基金项目
国家现代农业产业技术体系专项(CARS-46)资助[Supported by the Fund for CARS(CARS-46)] （CARS-46）
