日粮中添加过氧化氢酶对断奶仔猪生长性能、肠道形态及抗氧化性能的影响  

Effects of catalase enzyme on the growth performance,intestinal morphology and antioxidant property of weaned piglets

作　　者：方锐[1] 左建军[1] 凌宝明[2] 夏旻灏[1] 叶慧[1] 曹庆云[1] 刘志国 张志东[1] 冯定远[1] 

机构地区：[1]华南农业大学动物科学学院,广东广州510642 [2]广东温氏食品集团股份有限公司,广东新兴527400 [3]辽宁威兰生物技术有限责任公司,辽宁沈阳110004

出　　处：《中国饲料》2017年第1期23-27,共5页China Feed

基　　金：广东省科技计划项目(2016A020210104);广州市花都区产学研结合项目(天然植物肉质风味改进剂创制与应用技术)

摘　　要：为研究过氧化氢酶(CAT)对断奶仔猪生长性能、肠道形态以及抗氧化性能的影响,试验选择21日龄健康、体重接近的三元杂交断奶仔猪240头,随机分为5组,每组设4个重复,每个重复12头猪。A组为对照组,B组为氧化锌(Zn O)组,添加量为2500 mg/kg,C、D、E组在基础日粮中分别添加1000、1500、2000 mg/kg CAT。结果表明:(1)与对照组相比,D、E组料肉比分别降低3.2%、7.2%(P<0.05),同时日增重和日采食量提高,腹泻率降低,但无显著影响(P>0.05);(2)与对照组相比,D、E组血清中丙二醛(MDA)分别降低43.7%和44.7%(P<0.05),CAT组谷胱甘肽(GSH)含量显著升高(P<0.05);(3)与对照组相比,CAT组十二指肠、空肠、回肠绒毛高度有不同程度增加,隐窝深度有不同程度降低,但均未达到显著效果(P>0.05);(4)与对照组相比,C、D、E组粗脂肪表观消化率分别升高32.62%、33.49%、29.69%(P<0.05),干物质和粗蛋白质也有提高,但差异不显著(P>0.05)。饲粮中添加1500 mg/kg CAT可以提高断奶仔猪抗氧化性能,改善肠道绒毛形态,从而提高营养物质的消化率,达到提升生长性能的效果,并且可以在一定程度上达到ZnO的效果。This experiment was conducted to evaluate the effects of eatalase enzyme （CAT）on growth performance, intestinal morphology,and antioxidant capcity of weaned piglets.A total of 240 three-line crossbred （Durec×Landraee×Yorkshire）weaned piglets were randomly divided into 5 groups,with each group represented by 4 replicates of 12 piglets per replicate.Test group A was fed a basal diet as control group,test group B was fed the basal diet supplemented with 2500 mg/kg ZnO,while the next three experimental groups （C,D,E）were fed basal diet supplemented with 1000,1500,2000 mg/kg CAT,respectively.The trial lasted for 14 days.The results showed as follows： （1）Compared with the control group,the feed/gain （F/G）of groups D and E were significantly respectively decreased by 3.2% ,7.2% （P 〈 0.05 ）, but the other growth performaces were not significantly different among all groups （P 〉 0.05 ）. （2）Compared with the control group, malondialdehyde （MDA） content in serum of groups D and E were significantly decreased by 43.7% and 44.7%（P 〈 0.05）,and glutathione（GSH） content in serum of groups B,C,D and Ewere significantly increased（P 〈 0.05）. （3）There is no significantly difference in villus height,crypt depth and villus height to crypt depth ratio （V/C） in duodenum,jejunum and ileum among all groups,except the crypt depth in ileum in group B and D were significantly decreased than those in other groups. （4）Compared with the control group,the apparent digestibility of ether extract of C, D,E group was significantly increased by 32.62%, 33.49%, 29.69%.The results indicate that the dietary supplemented with 2000 mg/ kg CAT can decrease feed/gain （F/G）and diarrhea rate,while improve intestinal mucosal morphology, antioxidant property and nutrient apparent digestibility.To some degree,dietary supplemented with CAT is comparable to the effect of the dietary supplemented with zinc oxide.

关 键 词：过氧化氢酶 断奶仔猪 生长性能 肠道形态 抗氧化性能 

分 类 号：S816.7[农业科学—饲料科学]