Effects of Supplementary Feeding of Bifidobacterium on Exercise Performance and Heart Rate Variability of Yili Horses
This study investigates the effects of Bifidobacterium on exercise performance,heart rate variability(HRV)and post-race recovery in Yili horses.Nineteen Yili horses,aged 2-3 years,were randomly assigned to four groups and fed diets supplemented with 0％,0.025％,0.05％and 0.1％of Bifidobacteria(1 ×1011CFU/g).On the 50th day of the experiment,race performance and HRV data were collected to assess effects of the supplementation.The results showed that on the 50th day of the experiment,horses in the supplemented groups completed the race significantly faster than those in the control group(P＜0.01).Before the race,the time-domain Mean RR index in the control group was significantly higher than immediately after and 1 hour post-race(P＜0.01).In the 0.05％and 0.1％groups,Mean RR before and 1 hour post-race was also significantly higher than immediately af-ter the race(P＜0.01).Mean HR in all groups was significantly higher immediately post-race com-pared to 1 hour pre-and post-race(P＜0.01).For frequency domain index,the LF index of the 0.1％group was significantly lower 1 hour after the race compared to pre-race and immediately post-race.Conversely,the HF index was significantly higher before the race and 1 hour after the race than imme-diately after the race.The pre-race LF index of the 0.1 group was also significantly higher than that of the control group(P＜0.05).In terms of non-linear index,the SD2(standard deviation of all R-R intervals)in the 0.05％and 0.1％groups was significantly higher than that in the control group(P＜0.05),with the SD2 of all supplemented groups being significantly higher immediately post-race(P＜0.01).In conclusion,dietary Bifidobacterium supplementation improves exercise performance,en-hances the HRV,accelerates recovery,reduces post-race stress,and has a certain positive effect on overall athletic performance and health of the Yili horses.
Yili horsesBifidobacteriumHeart rate variability(HRV)Sports performance
万方数据
维普
