Apparent and standardized ileal digestibility of amino acids in diverse barley cultivars fed to growing pigs
Apparent and standardized ileal digestibility of amino acids in diverse barley cultivars fed to growing pigs
复制标题
饲喂生长猪的不同大麦品种氨基酸的表观和标准化回肠消化率
DOI：
10.1111/asj.12857
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发表时间：
2017
影响因子：
2
通讯作者：
Xiangshu PIAO
中科院分区：
文献类型：
--
作者：
Hongliang WANG;Xiaokang MA;Xiao XU;Meng SHI;Xiangshu PIAO
本研究的目的是确定大麦品种的化学组成，回肠氨基酸（AA）消化率和发展方程来预测AA消化率的基础上，个别大麦的化学特性。本试验选用了我国主要产区的9个大麦品种。将10头杂种猪（30.9± 1.8kg）分配到6×10的约登方阵中。处理包括无氮饮食和九个大麦试验饮食。不同大麦品种的中性洗涤纤维、酸性洗涤纤维、粗蛋白和氨基酸含量存在较大差异。除精氨酸、苯丙氨酸和苏氨酸外，其它必需氨基酸的回肠标准消化率在9种大麦中差异显著（P < 0.05）。在R2大于0.5 0时，CP和苏氨酸的线性回归方程达到极显著水平.结果表明，不同大麦品种对粗蛋白和氨基酸的回肠消化率存在显著差异。基于化学特性很难预测大多数氨基酸的SID。
The objectives of this study were to determine the chemical composition, ileal amino acid (AA) digestibility of barley varieties and to develop equations to predict the AA digestibility based on the chemical characteristics of individual barley. A wide selection of nine barley varieties in the main growing regions of China was used in the experiment. Ten crossbred pigs (30.9±1.8 kg) were allotted to a 6×10 Youden Square. The treatments included a nitrogen-free diet and nine barley test diets. Considerable variation was observed in the content of neutral detergent fiber, acid detergent fiber, crude protein (CP) and all AAs among the barley samples. The standardized ileal digestibility (SID) of indispensable AAs with the exception of arginine, phenylalanine and threonine were different (P < 0.05) among the nine barley sources tested. With R 2 values exceeding 0.50, significant linear regression equations for CP and threonine were obtained. In conclusion, significant differences existed in the ileal digestibility of CP and AAs among barley varieties. It is difficult to predict the SID of most of the amino acids in barely based upon chemical characteristics.