Effects of Haematococcus pluvialis Powder on Growth Performance,Astaxanthin Deposition and Intestinal Health of Penaeus monodon
This experiment was conducted to study the effects of Haematococcus pluvialis powder on growth performance,astaxanthin deposition and intestinal health of Penaeus monodon.A total of 1 620 Penaeus mon-odon were randomly divided into 9 groups with 3 replicates per group and 60 shrimps per group.Shrimps in 9 groups were fed the basal diets supplemented with 0(A0 group,as control group),0.1％(A1 group),0.2％(A2 group),0.3％(A3 group),0.4％(A4 group),0.5％(A5 group),0.6％(A6 group),0.7％(A7 group)and 0.8％(A8 group),Haematococcus pluvialis powder,respectively.The experiment lasted for 42 days.The results showed as follows:1)the final body weight of weight gain rate of A2 to A5 groups were sig-nificantly higher than those of the control group(P＜0.05),the specific growth rate of A1 to A5 groups was significantly higher than that of the control group(P＜0.05),and the survival rate of A7 to A8 groups was sig-nificantly lower than that of the control group(P＜0.05).2)The crustaceans astaxanthin content of A1 to A8 groups was significantly higher than that of the control group(P＜0.05),and the hepatopancreas and muscle content of A4 to A8 groups was significantly higher than that of the control group(P＜0.05).The content of astaxanthin in various tissues was crustaceans＞hepatopancreas＞muscle.3)The intestinal villus height of A4 to A8 groups was significantly higher than that of the control group(P＜0.05),and the intestinal wall thickness of Al to A8 groups was significantly higher than that of the control group(P＜0.05).4)Compared with the control group,at phylum level,the relative abundance of Proteobacteria in intestine of A2,A5 and A8 groups was significantly decreased(P＜0.05),and the relative abundances of Verrucomicrobiota and Planctomycetota in intestine were significantly increased(P＜0.05);at genus level,the relative abundance of Haloferula in in-testine of A2,A5 and A8 groups was significantly increased(P＜0.05),and the relative abundances of She-wanella and Vibrio in intestine were significantly decreased(P＜0.05).In conclusion,dietary supplemented with 0.2％to 0.5％Haematococcus pluvialis powder can effectively promote the growth of Penaeus monodon,increase the astaxanthin deposition,and improve the intestinal health.[Chinese Journal of Animal Nutrition,2024,36(9):5910-5923]
Penaeus monodonHaematococcus pluvialis powdergrowth performanceastaxanthinintestinal health
万方数据
维普
