摘要
文章旨在研究抗菌肽(Antimicrobial Peptide,AP)对育肥猪生长性能、免疫功能及经济效益的影响。试验将200头体况良好且初重为(62.48±0.52)kg的杜×长×大育肥猪随机分为4组,各组育肥猪分别饲喂基础日粮+0 mg/kg(0AP组)、100 mg/kg(100 AP组)、200 mg/kg(200 AP组)、300 mg/kg(300 AP组)的抗菌肽。每组5个重复,每个重复10头。试验共计30 d。结果:(1)与0AP组相比,200 AP组末重和平均日增重提高了4.59%(P<0.05)、16.35%(P<0.05),料重比降低了10.68%(P<0.05)。100 AP组、300 AP组末重和平均日增重高于0AP组,料重比低于0AP组,但差异不显著(P>0.05)。(2)与0AP组相比,100 AP组、200 AP组、300 AP组血清IgA、IgG含量显著提高(P<0.05),200 AP组、300 AP组血清TNF-α含量显著降低(P<0.05)。(3)4组育肥猪的经济效益分别为49.25、70.00、96.61、72.87元/只,200 AP组的经济效益最高,且显著高于0AP组、100 AP组、300 AP组(P<0.05)。结论:日粮添加100~300 mg/kg抗菌肽促进了育肥猪的生长发育,提高了免疫功能和经济效益,当抗菌肽添加量为200 mg/kg时,育肥猪的经济效益最高。
To investigate the effects of adding antimicrobial peptide(AP)to the diet on the growth performance,immune function,and economic benefits of fattening pigs.200 healthy and initially weighing(62.48±0.52)kg Duroc×Changx fattening pigs were selected and randomly divided into 4 groups.The fattening pigs in each group were fed with basic diet+0mg/kg(0AP group),100 mg/kg(100 AP group),200 mg/kg(200 AP group),and 300 mg/kg(300 AP group)of antimicrobial peptides.Each group has 5 replicates,with 10 replicates per replicate.The experiment lasted for a total of 30 days.Result:(1)Compared with the 0AP group,the final weight and average daily weight gain of the 200 AP group increased by 4.59%(P<0.05)and 16.35%(P<0.05),while the feed to weight ratio decreased by 10.68%(P<0.05).The final weight and average daily weight gain of the 100 AP and 300 AP groups were higher than those of the 0AP group,and the feed to weight ratio was lower than that of the 0AP group,but the difference was not significant(P>0.05).(2)Compared with the 0AP group,the serum IgA and IgG levels in the 100 AP group,200 AP group,and 300 AP group were significantly increased(P<0.05),while the serum TNF levels in the 200 AP group and 300 AP group were significantly higher-αThe content significantly decreased(P<0.05).(3)The economic benefits of four groups of fattening pigs were 49.25 yuan/piece,70.00 yuan/piece,96.61 yuan/piece,and 72.87 yuan/piece,respectively.The economic benefits of the 200 AP group were the highest and significantly higher than those of the 0AP group,100 AP group,and 300 AP group(P<0.05).Conclusion:Adding 100-300mg/kg of antimicrobial peptides to the diet promotes the growth and development of fattening pigs,improves immune function and economic benefits.When the amount of antimicrobial peptides added is 200mg/kg,the economic benefits of fattening pigs are the highest.
作者
陈亮
段江燕
CHEN Liang;DUAN Jiangyan(Linfen Vocational and Technical College,Linfen,Shanxi Province 041000,China)
出处
《中国饲料》
北大核心
2024年第18期41-44,共4页
China Feed
基金
中华职业教育社第一届黄炎培职业教育课题(ZJS2022YB321)。
关键词
抗菌肽
育肥猪
生长性能
免疫功能
经济效益
antimicrobial peptides
fattening pigs
growth performance
immune function
economic benefits
