Effects of Rare Earth on Feed Intake,Blood Parameters and Faecal Microbiota of Forest Musk Deer
This experiment was conducted to investigate the effects of rare earth on feed intake,blood parameters and fae-cal microbiota of forest musk deer(Moschus berezovskii).Twelve forest musk deers with the similar age and good health were randomly divided into two groups(trial and control),six for each group(3♀,3♂).The trial group was fed conventional diet and rare earth additive(150 mg/kg concentrate supplement).The experiment had 15 days pre-feeding period and 25 days formal period.(1)There was no significant effect of adding rare earth on the feed intake of basal diet(p>0.05),but the intake of leaf and total ration in the trial group were significantly higher than the control group(p<0.05).(2)The addi-tion of rare earth had no significant effect on body weight and weight gain of forest musk deer(p>0.05).(3)The contents of UREA and TCH in serum of forest musk deer in trial group were lower than those of control group(p<0.05),but other blood indexes were not significantly different(p>0.05).(4)There was no significant difference between the trial and control groups in Chao1 index,Simpson index,Shannon index and Beta diversity of ANOSIM results(p>0.05).It is concluded that the addition of rare earth increased feed intake of forest musk deer and decreased serum UREA and TCH levels,but had no significant effect on forest musk deer's body weight and faecal microbial diversity.