The conservation of aquatic systems is closely linked to the maintenance and improvement of aquaculture products'yield and quality.In this experiment,a high-quality aquatic system was established,comprising Litope...The conservation of aquatic systems is closely linked to the maintenance and improvement of aquaculture products'yield and quality.In this experiment,a high-quality aquatic system was established,comprising Litopenaeus vannamei as a model species and two strains of Bacillus(W1 and XYB4)combined with sodium humate under zero-water exchange conditions.The growth performance,enzyme activity,and aquatic system microbial environment of L.vannamei were analyzed.Results showed that the combination of sodium humate and Bacillus strains effectively enhanced environmental conditions for the growth and reproduction of heterotrophic bacteria while inhibiting the growth of Vibrio species,including green and yellow variants.Microbiome analysis showed that the group treated with Bacillus strains combined with sodium humate exhibited significantly higher relative abundances of Firmicutes and Actinobacteriota than the other groups.Correspondingly,this treatment group showed substantially enhanced weight gain rate,specific growth rate,survival rate,and feed coefficient.Moreover,the phenol oxidase,catalase,lysozyme,and superoxide dismutase indexes of shrimps subjected to Bacillus–sodium humate treatment were considerably higher than those of the control group.These findings confirm that the combination of Bacillus and sodium humate has beneficial effects on shrimp growth and aquatic system quality control,providing a promising strategy for enhancing the efficiency of shrimp farming and aquaculture.展开更多
基金supported by the National Key R&D Program of China(No.2023YFD2401703)。
文摘The conservation of aquatic systems is closely linked to the maintenance and improvement of aquaculture products'yield and quality.In this experiment,a high-quality aquatic system was established,comprising Litopenaeus vannamei as a model species and two strains of Bacillus(W1 and XYB4)combined with sodium humate under zero-water exchange conditions.The growth performance,enzyme activity,and aquatic system microbial environment of L.vannamei were analyzed.Results showed that the combination of sodium humate and Bacillus strains effectively enhanced environmental conditions for the growth and reproduction of heterotrophic bacteria while inhibiting the growth of Vibrio species,including green and yellow variants.Microbiome analysis showed that the group treated with Bacillus strains combined with sodium humate exhibited significantly higher relative abundances of Firmicutes and Actinobacteriota than the other groups.Correspondingly,this treatment group showed substantially enhanced weight gain rate,specific growth rate,survival rate,and feed coefficient.Moreover,the phenol oxidase,catalase,lysozyme,and superoxide dismutase indexes of shrimps subjected to Bacillus–sodium humate treatment were considerably higher than those of the control group.These findings confirm that the combination of Bacillus and sodium humate has beneficial effects on shrimp growth and aquatic system quality control,providing a promising strategy for enhancing the efficiency of shrimp farming and aquaculture.
