摘要
本试验通过不同比例豆粕和豆皮配制出不同种类的6种人工豆粕,测定人工豆粕营养成分含量和代谢能,旨在建立豆粕的肉仔鸡代谢能预测模型。选取1008只1日龄爱拔益加(AA)公雏鸡,随机分为7组(其中1组为饥饿组),每组8个重复,每个重复18只鸡。于14~16日龄采用全收粪法测定肉仔鸡的表观代谢能(AME)、氮校正表观代谢能(AMEn)、真代谢能(TME)和氮校正真代谢能(TMEn),并采用营养成分逐步回归建立肉仔鸡代谢能预测方程。结果表明:1)配制的6种人工豆粕中粗蛋白质(CP)含量呈梯度增加,粗脂肪(EE)、粗纤维(CF)、中性洗涤纤维(NDF)和酸性洗涤纤维(ADF)含量变异系数较大,分别为24.65%、42.57%、33.86%和45.09%。2)碳水化合物成分中蔗糖、棉子糖和水苏糖含量平均值分别为49.86、12.88和42.79 g/kg。3)14~16日龄肉仔鸡不同人工豆粕饲粮AME、AMEn、TME和TMEn平均值分别为11.68、11.48、12.30和12.06 MJ/kg,不同人工豆粕原料AME、AMEn、TME和TMEn平均值分别为11.36、11.17、12.74和12.51 MJ/kg。4)用常规营养成分含量逐步回归建立肉仔鸡代谢能预测方程如下:AME=9.078-0.123CF+0.060CP(R2=0.982,P<0.01),AME=2.236+0.187CP-0.120EE(R2=0.911,P<0.01);用寡糖含量建立肉仔鸡预测方程为AME=4.825+0.121CP+0.019蔗糖-0.229EE(R2=0.970,P<0.01)等。用交叉验证法验证常规营养成分的预测方程,预测值和实测值接近,建立的肉仔鸡代谢能预测模型较成功。
The objective of this experiment was to determine the nutrient contents and metabolizable energy of 6 kinds of synthesis soybean meals that were prepared by different ratios of soybean meal and soybean hull,so as to establish the prediction model of metabolizable energy of soybean meal for broilers.A total of 1008 one⁃day⁃old Arbor Acres roosters were selected and randomly divided into 7 groups(one of which was the hungry group),and there were 8 replicates per group and 18 chickens per replicate.The apparent metabolizable energy(AME),nitrogen corrected apparent metabolizable energy(AMEn),true metabolizable energy(TME)and nitrogen corrected true metabolizable energy(TMEn)of broilers were measured from 14 to 16 days of age by total feces collection method,and regression equations between metabolizable energy of broilers and nutrients were established by stepwise regression.The results showed as follows:1)the crude protein(CP)content of the 6 kinds of synthesis soybean meals was increased gradually,while the variation coefficients of ether extract(EE),crude fiber(CF),neutral detergent fiber(NDF)and acid detergent fiber(ADF)contents were rela⁃tively large,which were 24.65%,42.57%,33.86%and 45.09%,respectively.2)The mean value of su⁃crose,raffinose and stachyose in carbohydrate components were 49.86,12.88 and 42.79 g/kg,respectively.3)The mean value of AME,AMEn,TME and TMEn of broilers in different synthesis soybean meal diets were 11.68,11.48,12.30 and 12.06 MJ/kg,while the mean value of AME,AMEn,TME and TMEn in dif⁃ferent synthesis soybean meals were 11.36,11.17,12.74 and 12.51 MJ/kg,respectively.3)Prediction equa⁃tions of metabolizable energy by conventional nutrient contents for broilers were established as followed:AME=9.078-0.123CF+0.060CP(R2=0.982,P<0.01),AME=2.236+0.187CP-0.120EE(R2=0.911,P<0.01).Prediction equation of metabolizable energy by oligosaccharides content was established as AME=4.825+0.121CP+0.019sucrose-0.229EE(R2=0.970,P<0.01)and so on.Cross validation was used to veri⁃fy the predic
作者
江秋雨
武威
呙于明
班志彬
张炳坤
JIANG Qiuyu;WU Wei;GUO Yuming;BAN Zhibin;ZHANG Bingkun(State Key Laboratory of Animal Nutrition,College of Animal Science and Technology,China Agricultural University,Beijing 100193,China;Jilin Academy of Agricultural Sciences,Changchun 130000,China)
出处
《动物营养学报》
CAS
CSCD
北大核心
2021年第7期3799-3809,共11页
CHINESE JOURNAL OF ANIMAL NUTRITION
基金
国家重点研发计划(2017YFE0129900)
白羽肉鸡常用能量饲料原料营养价值评定与参数建立。
关键词
肉鸡
人工豆粕
低聚糖
表观代谢能
预测方程
broilers
synthesized soybean meal
oligosaccharides
apparent metabolizable energy
prediction equation
