五味子、柠檬酸对断奶仔猪生长性能和抗氧化功能的影响

Effect of Schisandra chinesnsis and citric acid on growth performance and antioxidation of weaned piglets

试验选择28日龄断奶二元杂交(长白×大约克)仔猪48头,平均断奶体重7.4±0.6 kg,平均分为4组,每组3次重复,每重复4头(公母各半),试验组分别添加1%CA、0.5%SC、1%CA+0.5%SC,对照组为玉米-豆粕型基础日粮,旨在研究日粮中添加五味子(SC)、柠檬酸(CA)对断奶仔猪生长性能和抗氧化功能的影响。结果表明,与对照组相比,添加CA可提高饲料利用效率(P<0.05),但对日增重和平均日采食量无显著影响(P>0.05)。添加SC或CA+SC除降低腹泻率外对断奶仔猪生产性能无影响(P>0.05)。添加五味子可显著提高断奶仔猪肝脏或脾脏SOD活性,提高血清GR活性,降低心脏或肝脏MDA含量(P<0.05)。且日粮中添加五味子可提高断奶仔猪机体抗氧化功能,添加柠檬酸或五味子可改善断奶仔猪部分生长性能。

This study was designed to investigate the effect of Schisandra chinesnsis（SC）,citric acid（CA） and their complex on growth performance and antioxidation of weaned piglets.Total 48 crossbred（Yorkshire×Landrace） weaned piglets（BW=7.4±0.6 kg） were randomly assigned to four dietary treatments（three pens/treatment）,four pigs per pen（two gilts and two barrows） for four-week trial.Testing Groups were fed basal diet supplemented with 1% CA,0.5% SC and 1% CA＋0.5% SC,respectively.The control group was fed a corn-soybean meal basal diet.The result showed： CA supplementation increased feed efficiency（P0.05）,but did not influence the average daily gain（ADG） or the average daily feed intake（ADFI） of piglets（P0.05）.Incidence of diarrhea was decreased by SC or complex supplementation（P0.05）.As compared to the control,superoxide dismutase（SOD） activity of liver and spleen,glutathione reducetase（GR） activity of serum were improved and malondialdehyde（MDA） concentration of heart or liver was reduced 1% SC supplementation significantly（P0.05）.The results indicated that diets supple-ment with SC enhanced antioxidation of weaned piglets,CA or SC supplementation improved some growth performances of weaned piglets.