谷物及其副产品中添加非淀粉多糖酶对肉鸭养分利用率的影响  

Effects of Cereals and Cereal By-Products Supplemented with Non-Starch Polysaccharides Enzyme on Nutrient Utilization Rates of Meat Ducks

作　　者：张旭[1] 张艳国[2] 蒋桂韬[1] 张建华[3] 王向荣[1] 胡艳[1] 戴求仲[1] 

机构地区：[1]湖南省畜牧兽医研究所动物营养与饲养技术研究室,长沙410131 [2]东北农业大学实验室管理处,哈尔滨150030 [3]湖南农业大学动物科学技术学院,长沙410128

出　　处：《动物营养学报》2013年第12期2888-2896,共9页CHINESE JOURNAL OF ANIMAL NUTRITION

基　　金：国家水禽产业技术体系建设专项资金资助(CARS-43)

摘　　要：本试验旨在研究14种谷物及其副产品中加入非淀粉多糖(NSP)酶对肉鸭养分利用率的影响。试验选用56只体重2.0 kg左右的成年肉用公麻鸭,随机分为7组,每组8个重复,采用"绝食强饲-全收粪法"进行代谢试验,测定14种谷物及其副产品加酶前后的干物质(DM)、粗蛋白质(CP)、粗脂肪(EE)和粗纤维(CF)的表观利用率和真利用率。结果表明:添加NSP酶后,14种谷物及其副产品[玉米、玉米糖渣、干酒糟及其可溶物(DDGS)、稻谷(皮)、碎米、米糠、米糠粕、小麦(裸)、次面粉、次粉、小麦麸、大麦(皮)、燕麦麸、白酒糟]中的大部分能够提高肉鸭对DM、CP、EE和CF的表观利用率和真利用率。其中,玉米的DM、CP、EE、CF表观利用率分别提高了6.69%(P<0.01)、24.73%(P<0.05)、7.40%(P>0.05)和9.95%(P<0.05),稻谷的CP和CF表观利用率分别提高了14.20%和4.55%(P>0.05),DDGS的EE和CF表观利用率分别提高了12.57%和4.99%(P>0.05),次粉的DM和CP表观利用率分别提高了1.26%和13.87%(P>0.05)。添加NSP酶可以使14种谷物及其副产品中的大部分释放出额外的有效营养成分,DM的有效营养改进值(ENIV)范围为0.09～46.92 g/kg,CP的ENIV范围为0.49～9.55 g/kg,EE的ENIV范围为0.13～8.85 g/kg,CF的ENIV范围为0.31～7.78 g/kg。由此得出,在谷物及其副产品中添加NSP酶能够不同程度地提高肉鸭的养分利用率。The aim of this experiment was to study the effects of cereals and cereal by-products supplemented with non-starch polysaccharides （NSP） enzyme on nutrient utilization rates of meat ducks. A total of 56 healthy adult male meat Ma ducks with the body weight about 2.0 kg were randomly divided into 7 groups and 8 replicates in each group. Metabolic test was carried out by ＇ hunger strike-gavage method＇ to determine ap- parent and true utilization rates of dry matter （ DM）, crude protein （ CP）, ether extract （EE） and crude fiber （CF） of 14 kinds of cereals and cereal by-products [ corn, corn sugar residue, distiller dried grains with solubles （ DDGS ）, paddy, broken rice, rice bran, rice bran meal, wheat, secondary flour, wheat middling, wheat bran, barley, oat bran, brewers dried grain] before and after adding NSP enzyme. The results showed that most of the 14 kinds of cereals and cereal by-products adding with NSP enzyme could improve the apparent and true utilization rates of DM, CP, EE and CF. Among them, the apparent utilization rates of DM, CP, EE and CF of corn were increased by 6.69% （P〈0.01）, 24.73% （P〈0.05）, 7.40% （P〉0.05） and 9.95 % （ P 〈 0.05 ）, respectively ; the apparent utilization rates of CP and CF of rice bran were increased by 14.20% and 4.55% （ P 〉 0.05）, respectively ; the apparent utilization rates of EE and CF of DDGS were increased by 12.57% and 4.99% （ P 〉 0.05 ）, respectively ; the apparent utilization rates of DM and CP of secondary flour were increased by 1.26% and 13.87% （P 〉 0.05 ）, respectively. NSP enzyme addition could make most of the cereals and cereal by-products release additional effective nutrients. The effective nutrient im- provement value （ENIV） range of DM was 0.09 to 46.92 g/kg, the ENIV range of CP was 0. 49 to 9.55 g/kg, the ENIV range of EE was 0. 13 to 8. 85 g/kg and the ENIV range of CF was 0. 31 to 7.78 g/kg. The results indicate that cereals and cereal by-products adding with NSP enzyme can imp

关 键 词：谷物及其副产品 非淀粉多糖酶 肉鸭 养分利用率 ENIV 

分 类 号：S816[农业科学—饲料科学]