Effects of fucoidan on antioxidant activity and myoglobin content of lamb muscle
In order to explore the effects of different contents of fucoidan added to milk substitute powder on the antioxidant function and myoglobin content of lamb muscle.In the experiment,24 healthy castrated Chuanzhong black male lambs of 30-day-old with similar weight and body condition were randomly divided into 4 groups.According to the principle of homogeneity,each group had 6 replicates and 1 lamb per replicate.The control group was fed with milk substitute powder and starter.The experimental group was added with 0.1％,0.3％and 0.6％fucoidan in the basic milk substitute powder respectively.The pre-trial period was 7 days and the formal period was 30 days.The results showed as follows:(1)The content of methemoglobin(MetMb)in 0.1％and 0.3％groups was significantly lower than that in control group(P＜0.05),and the content of METMB in 0.3％group was significantly decreased by 29.10％(P＜0.01);The concentration of myoglobin(Mb)in 0.1％group was significantly higher than that in 0.3％and 0.6％groups(P＜0.05),but there was no significant difference compared with control group(P＞0.05).(2)The glutathione peroxidase(GSH-Px)activity of 0.3％group and 0.6％group and the superoxide dismutase(SOD)activity of 0.6％group were significantly higher than those of control group by 14.24％,12.72％and 21.89％(P＜0.01);The catalase(CAT)activity in experimental groups was significantly higher than that in control group by29.02％,33.69％and 42.26％(P＜0.05).(3)The content of malondialdehyde(MDA)in 0.3％group was significantly lower than that in control group by 9.84％(P＜0.01);The muscle total antioxidant capacity(T-AOC)of experimental groups showed an increasing trend(0.05 ≤P＜0.10),and the muscle total antioxidant capacity(T-AOC)of 0.3％and 0.6％groups was significantly higher than that of control group by 23.21％and 17.86％.In conclusion,the addition of seaweed polysaccharide in milk replacer could significantly improve the antioxidant properties and myoglobin content of muscle.Under the experimental conditions,the addition of 0.3％fucoidan in milk replacer powder was the most suitable.
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