丝兰提取物对育肥猪生长性能、养分消化率及血清抗氧化能力的影响

Effects of silk orchid extract on growth performance,nutrient digestibility,and antioxidant capacity of fattening pigs

文章旨在研究丝兰提取物(YuccaShidigeroExtract,YSE)对育肥猪生长性能、养分消化率及血清抗氧化能力的影响。试验将150头初始体重为(32.16±1.54)kg,体况良好的杜长大育肥猪随机分为3组,每组5个重复,每个重复10头(公母各一半)。其中,对照组参考NRC(2012)配制基础日粮,其他2组在基础日粮中分别添加200g/t(YSE200组)、400g/t(YSE400组)的丝兰提取物。试验为期45d。结果表明,(1)与对照组相比,YSE200组、YSE400组育肥猪末重显著提高3.36%、3.71%(P <0.05),平均日增重显著提高7.35%、8.82%(P <0.05),料重比显著降低6.07%、6.39%(P <0.05)。(2)与对照组相比,YSE200组、YSE400组干物质消化率显著提高5.40%、5.43%(P <0.05),粗蛋白质消化率显著提高4.89%、5.77%(P <0.05),粗脂肪消化率显著提高5.14%、5.58%(P <0.05)。(3)与对照组相比,YSE200组、YSE400组育肥猪血清总抗氧化能力显著提高23.01%、27.05%(P <0.05),血清丙二醛含量显著降低26.40%、27.66%(P <0.05)。与对照组相比,YSE400组育肥猪血清过氧化氢酶活性显著提高23.22%(P <0.05)。结论:基础日粮添加丝兰提取物能提高育肥猪生长性能、养分消化率及抗氧化能力,在本试验条件下,丝兰提取物的添加水平为400g/t时效果最佳。

This experiment aims to investigate the effects of Yucca Shidigero Extract(YSE)on growth performance,nutrient digestibility,and antioxidant capacity of fattening pigs.Select 150 Duroc fattening pigs with an initial weight of(32.16±1.54)kg and good physical condition,and randomly divide them into 3 groups,with 5 replicates in each group,with 10 pigs in each replicate(half male and half female).Among them,the control group referred to the NRC(2012)basic diet for fattening pigs,while the other two groups added 200 g/t(YSE200 group)and 400 g/t(YSE400 group)of yucca extract to the basic diet,respectively.The experimental period is 45 days.The results showed that:(1)Compared with the control group,the YSE200 and YSE400 groups significantly increased the final weight of finishing pigs by 3.36% and 3.71%(P < 0.05),and the average daily weight gain significantly increased by 7.35% and 8.82%(P < 0.05).The feed to weight ratio significantly decreased by 6.07% and 6.39%(P < 0.05).(2)Compared with the control group,the YSE200 and YSE400 groups significantly increased their dry matter digestibility by 5.40% and 5.43%(P < 0.05),crude protein digestibility by 4.89% and 5.77%(P< 0.05),and crude fat digestibility by 5.14% and 5.58%(P < 0.05).(3)Compared with the control group,the YSE200 and YSE400 groups significantly increased the total antioxidant capacity of serum by 23.01% and 27.05%(P < 0.05),and the serum malondialdehyde content significantly decreased by 26.40% and 27.66%(P < 0.05).Compared with the control group,the YSE400 group significantly increased the serum catalase activity of fattening pigs by 23.22%(P < 0.05).Conclusion:Adding silk orchid extract to the basic diet can improve the growth performance,nutrient digestibility,and antioxidant capacity of fattening pigs.The best effect is achieved when the addition level of silk orchid extract is 400 g/t.