Effects of Rhodotorula mucilaginosa JM-01 addition in feed on growth,physiological health indices and intestinal bacteria of Penaeus vannamei
CAI Yuyong
WANG Bo
ZHU Yanbo
JIA Zhaoyang
DONG Shuanglin
FAN Ruiyong
TIAN Xiangli
Abstract：A 42-day experiment was conducted to investigate the effects of red marine yeast Rhodotorula mucilaginosa JM-01 addition in feed on the growth performance,physiological health indices and intes-tinal bacteria of Penaeus vannamei.In the study,only one control(basic feed without R.mucilagino-sa)and one treatment group contained R.mucilaginosa 1×1010 cfu/kg were set up.The experimental results showed that the survival rate of treatment group and control group were all above 90％,and the difference was not significant(P＞0.05).The body weight,specific growth rate,feed efficiency and apparent digestibility of P.vannamei in the treatment group were higher than those in the control group(P＜0.05).Compared with the control,the treatment group significantly improved the activities of superoxide dismutase(SOD),alkaline phosphatase(AKP),acid phosphatase(ACP),lysozyme(LSZ)and total nitric oxide synthase(TNOS)(P＜0.05).The 14-day Vibrio parahaemolyticus challenge experiment showed that the mortality rate of the control group(73.06％)was significantly higher than that of the treatment group(40.52％).As compared to the control,the species diversity of intestinal flora increased,the abundance of dominant flora stricture changed,and the flora structure showed an obvious differentiation.In conclusion,R.mucilaginosa JM-01 has a good potential applica-tion in the culture of P.vannamei.
Keywords：Rhodotorula mucilaginosaspecific growth ratenon-specific immunitydisease resist-ancePenaeus vannamei
Publication Date：2025-02-28
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：9( 53-61 )