Mixed organic acids as an alternative to antibiotics improve serum biochemical parameters and intestinal health of weaned piglets

作     者：Jiayu Ma Xiangshu Piao Qinghui Shang Shenfei Long Sujie Liu Shad Mahfuz Jiayu Ma;Xiangshu Piao;Qinghui Shang;Shenfei Long;Sujie Liu;Shad Mahfuz

作者机构：State Key Laboratory of Animal NutritionCollege of Animal Science and TechnologyChina Agricultural UniversityBeijing 100193China 

出 版 物：《Animal Nutrition》 (动物营养（英文版）)

年 卷 期：2021年第7卷第3期

页      面：737-749页

核心收录：

学科分类：090502[农学-动物营养与饲料科学] 0905[农学-畜牧学] 09[农学] 

基　　金：supported by the National Natural Science Foundation of China(31772612) Beijing Municipal Natural Science Foundation(6202019) 

主　　题：Weaned piglet Organic acid Growth performance Intestinal health 

摘      要：The primary aim of this experiment was to critically explore the relationship between the different levels of mixed organic acids(MOA)and growth performance,serum antioxidant status and intestinal health of weaned piglets,as well as to investigate the potential possibility of MOA alternative to antibiotics growth promoters(AGP).A total of 180 healthy piglets(Duroc×[Landrace×Yorkshire];weighing 7.81±1.51 kg each,weaned at d 28)were randomly divided into 5 treatments:1)basal diet(CON);2)CON+chlorinomycin(75 mg/kg)+virginiamycin(15 mg/kg)+guitaromycin(50 mg/kg)(AGP);3)CON+MOA(3,000 mg/kg)(OA1);4)CON+MOA(5,000 mg/kg)(OA2);5)CON+MOA(7,000 mg/kg)(OA3).This study design included 6 replicates per treatment with 6 piglets per pen(barrow:gilt=1:1)and the experiment was separated into phase 1(d 1 to 14)and phase 2(d 15 to 28).In phases 1,2 and overall,compared with the CON,the feed conversion ratio(FCR)was reduced(P0.01)and the average daily gain(ADG)was increased(P0.05)in piglets supplemented with AGP,OA1 and *** con-centration of serum immunoglobulins G(IgG)was improved(P0.05)in piglets supplemented with OA2 in phase *** the jejunum and ileum,the villus height:crypt depth ratio was significantly increased(P0.01)in piglets fed AGP and *** mRNA expression level of claudin-1 and zonula occludens-1(ZO-1)(P0.01)was up-regulated in piglets supplemented with OA1 and *** piglets fed AGP,OA1 and OA2 showed an increase(P0.05)in the content of acetate acid and total volatile fatty acids(TVFA)in the cecum,and butyric acid and TVFA in the colon compared with ***,OA1 lowered(P0.05)the content of Lachnospiraceae in *** results demonstrated that MOA at 3,000 or 5,000 mg/kg could be an alternative to antibiotics due to the positive effects on performance,immune parameters,and intestinal health of weaned ***,from the results of the quadratic fitting curve,it is inferred that MOA at a dose of 4,000 mg/kg may produce a better effect.