低聚木糖对肉仔鸡的生物安全性评价  

Evaluation of the Biological Safety of Xylooligosaccharides for Broilers

作　　者：索海青 许国辉 肖林 陈小刚 夏蕊蕊 张丽阳[1] 吕林[1] 罗绪刚[1] 

机构地区：[1]中国农业科学院北京畜牧兽医研究所,矿物元素营养研究室,北京100193 [2]山东省功能糖工程研究中心,禹城251200 [3]山东省秸秆生物炼制技术重点实验室,禹城251200

出　　处：《动物营养学报》2015年第6期1841-1852,共12页CHINESE JOURNAL OF ANIMAL NUTRITION

基　　金：山东龙力生物科技股份有限公司资助;中国农业科学院科技创新工程专项经费(ASTIP-IAS08);公益性行业(农业)科研专项经费(201403047);国家现代农业产业技术体系岗位专家专项经费(CARS-42)

摘　　要：本试验旨在研究饲粮添加低聚木糖水平对1～21日龄和22～42日龄爱拔益加（ AA）肉仔鸡生长性能、血液生理和血浆生化指标、器官发育和组织病理学变化的影响,从而评价低聚木糖对肉仔鸡饲用的生物安全性。试验采用单因子完全随机设计。选用240只1日龄AA肉仔鸡,随机分为4个组（每个组6个重复,每个重复10只鸡,公、母各5只）,分别饲喂低聚木糖添加量为0、160、800和1600 mg/kg 的试验饲粮。试验期为42 d。结果表明,饲粮添加1600 mg/kg低聚木糖显著提高21日龄肉仔鸡血浆球蛋白浓度和42日龄肉仔鸡血浆葡萄糖浓度（ P〈0.05）,显著降低21日龄肉仔鸡血浆磷酸肌酸激酶和谷丙转氨酶活性以及42日龄肉仔鸡血浆甘油三酯浓度（ P〈0.05）；800 mg/kg添加组42日龄肉仔鸡肾脏相对重量显著高于对照组和1600 mg/kg添加组（ P〈0.05）。以上结果表明,肉仔鸡玉米-豆粕型饲粮中低聚木糖的最高添加限量定为160 mg/kg,具有10倍的安全系数,对肉仔鸡饲用是安全的。This experiment was conducted to investigate the effect of dietary xylooligosaccharides level on growth performance, hematology, plasma biochemical traits, weight or length indices of organs, and his-topathological changes of broilers during periods of days 1 to 21 and 22 to 42 so as to evaluate the biological safety of xylooligosaccharides for broiler chicks. A total of 240 one-day-old commercial Arbor Acres broilers were randomly allocated by bodyweight to one of four groups with six replicates per group and ten broilers （ half male and half female ） per replicate. Birds were fed the diets supplemented with 0, 160, 800 or 1 600 mg/kg xylooligosaccharides for an experimental duration of 42 days. Results showed that birds fed the diet supplemented with 1 600 mg/kg xylooligosaccharides significantly improved the plasma globulin （ GLB） concentration on day 21and plasma glucose （ GLU） concentration on day 42 （ P〈0.05） , significantlydecreased creatine phosphokinase （ CPK） and glutamic-pyruvic transaminase （ ALT） activities in plasma on day 21 and plasma triglyceride （TG） concentration on day 42 （P〈0.05）. The relative weight of kidney on day 42 was significantly increased by the addition of 800 mg/kg xylooligosaccharides （ P〈0.05） . There were no significant differences in growth performance, blood physiological or other plasma biochemical and organ development pa-rameters among all groups （ P〉0.05）;and no pathological changes of heart, liver, lung, kidney and pancreas were observed among all added groups. Therefore, the upper limitation of added xylooligosaccharides at 160 mg/kg in the corn-soybean meal diet will be 10 times safe for broilers.

关 键 词：低聚木糖 生物安全性评价 肉仔鸡 

分 类 号：S816.7[农业科学—饲料科学] S831[农业科学—畜牧学]