摘要
文章旨在研究不同水平维生素A对肉兔生长性能、免疫指标和抗氧化指标的影响。结果发现,与对照组相比,在日粮中添加不同水平的维生素A对肉兔末重和平均日增重均有显著影响(P <0.05),其中加入20000或40000IU/kg维生素A对提高肉兔生长性能效果最显著(P <0.05),肉兔末重、平均日增重提高最多,分别比对照组提高27.5%和37.0%;其次,在日粮中添加不同水平的维生素A对肉兔血清中的IgA、IgG、IgM、IL-2等免疫指标以及GSH-Px、T-SOD、MDA等抗氧化活性指标均有显著影响(P <0.05),其中加入20000IU/kg维生素A组的免疫指标和抗氧化活性指标与对照组相比差异性最显著(P <0.05),IgA、IgG、IgM、IL-2分别提高38.6%、42.5%、85.7%、10.2%,GSH-Px和T-SOD提高25.5%和23.4%,MDA降低21.8%。研究结果表明,在日粮中加入20000IU/kg的维生素A对肉兔生长促进效果最明显,可使肉兔的饲料效率最佳。
The purpose of this study was to investigate the effects of Different Vitamin A Levels on Growth Performance,Immune Indexes and Antioxidant Function of Meat Rabbits. The results showed that compared with the control group,different levels of vitamin A in the diet had significant effects on the final weight and average daily gain of meat rabbits(P < 0.05). Among them,20000 or 40000 IU/kg of vitamin A had the most significant effect on improving the growth performance of meat rabbits(P< 0.05). The final weight and average daily gain of meat rabbits increased by 27.5% and 37.0% respectively compared with the control group;Secondly,different levels of vitamin A added to the diet had significant effects on the immune indexes such as Ig A,Ig G,Ig M,IL-2,and antioxidant activity indexes such as GSH Px,T-SOD,MDA in the serum of meat rabbits(P < 0.05).Among them,the immune indexes and antioxidant activity indexes of the group added 20000 IU/kg vitamin A had the most significant difference compared with the control group(P < 0.05). Ig A,Ig G,Ig M,IL-2 increased by 38.6%,42.5%,85.7%,and 10.2%,respectively,GSH Px and T-SOD increased by 25.5% and 23.4%,and MDA decreased by 21.8%. The results of the study showed that adding 20000 IU/kg vitamin A to the diet had the most obvious effect on the growth of meat rabbits,and could make the feed efficiency of meat rabbits the best.
作者
张玉莹
ZHANG Yuying(Weihai Ocean Vocational College,Weihai,Shandong Province 264300,China)
出处
《中国饲料》
北大核心
2023年第4期53-56,共4页
China Feed
