期刊
AQUACULTURE
卷 542, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.aquaculture.2021.736897
关键词
Sea cucumber Apostichopus japonicus; Lactobacillus acidophilus; Tussah immunoreactive substances; Enzyme activities analysis; Intestinal microbiota
资金
- Science and Technology Foundation of Dalian [2020JJ27SN113]
- National Key R&D Program of China [2018YFD0901603, 2018YFD0900105]
- Liaoning Revitalization Talents Program [XLYC1802091]
- Innovation and Entrepreneurship Program for Highlevel Talent of Dalian [2018RD10, 2018RQ60, 2017RQ159]
- Special Program for research grants of Liaoning academy of agricultural sciences [2021HQ1916]
- Foundation of President of Liaoning Academy of Sciences [2020QN2423]
- Ocean & Fisheries Project of Liaoning Province [201833, 201823]
The combined supplementation of Lactobacillus acidophilus and tussah immunoreactive substances showed synergistic effects on enhancing digestive and immune activities in sea cucumbers. It also improved the intestinal microbiota structure, suggesting potential for industrial feeding applications.
To investigate the effects of Lactobacillus acidophilus and tussah immunoreactive substances (TIS) supplementation alone or together on the growth performance, digestive and immune-related enzyme activities, and intestinal microbiota of the sea cucumber Apostichopus japonicus, a feeding experiment was conducted. The supplementation of L. acidophilus and TIS together produced the maximum digestive and immune activities, while the minimum values occurred in the control group. No remarkable differences in enzyme activities were observed when supplemented individually. Dietary L. acidophilus and TIS in combination might be more capable of improving digestive capacity, food utilization rate, phosphatase-responsiveness and antioxidants. Furthermore, the supplementation of L. acidophilus and TIS in combination demonstrated a greater ability to optimize the intestinal microbiota of A. japonicus by increasing the potentially beneficial bacteria involved in energy production and biosynthesis, and suppressing the opportunistic pathogens. These results collectively indicated that the combined supplementation of L. acidophilus and TIS has a synergistic effect on enhancing immunity and digestibility, and could improve the intestinal microbiota structure of A. japonicus, suggesting potential for industrial feeding applications.
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