摘要
Five barrows (German Landrace; initial BW 58 kg, final BW 80 kg) fitted with an ileo-rectal anastomosis were used to determine the effect of partial dehulling and addition of barley hulls of two- and six-row barley varieties on the precaecal digestibility (pD) of CP and amino acids. The following diets were provided according to a standardized diet formulation and tested in seven consecutive periods (repeated group-period design): two-row barley (TRB) + casein (C), dehulled TRB + C, TRB + C + 10% hulls, six-row barley (SRB) + C, dehulled SRB + C, SRB + C + 1% hulls, and wheat starch + C. The diets were supplied at daily rates of 79 – 86 g DMI · kg BW−0.75 in barley containing diets and at 49 g DMI · kg BW−0.75 in the casein diet. The digestibility of amino acids in barley varieties was determined by the difference method (casein as basal diet) using quantitative digesta collection.
In both varieties of barley the pD of CP and amino acids did not differ. The pD of CP was unchanged in regard to the treatments in both barley varieties. Due to dehulling in TRB the pD was improved significantly for most indispensable amino acids and in SRB for Met and Cys. Addition of 10% hulls to TRB led to equivalent pD of Arg, His, Leu, Tyr, and Trp compared to TRB, but the pD of Lys, Phe, Thr and Val was significantly decreased below the levels of TRB. Addition of even 1% hulls to SRB impaired the pD of Lys below the level in SRB. In conclusion, addition of barley hulls to pig diets impairs amino acids absorption in the small intestine. The pD values, measured under standardized experimental conditions (without a correction using basal endogenous amino acids), are similar to the values of true digestibility published by NRC (1998 NRC. 1998. Nutrient requirements of swine , 10th ed. (Revised), Washington, DC: National Academy Press. [Google Scholar]).
摘要译文
五头阉猪（德国长白猪;初始体重58公斤，使用直肠 - 直肠吻合法来测定部分去壳和添加大麦壳的2排和6排大麦品种对CP和氨基酸的预处理前可消化性（pD）的影响。根据标准化饮食配方提供以下饮食，并在七个连续时期（重复的组时期设计）中测试：两行大麦（TRB）+酪蛋白（C），脱皮TRB + C，TRB + C + 10％壳，六行大麦（SRB）+ C，去皮SRB + C，SRB + C + 1％壳和小麦淀粉+ C.日粮的供应量为79 - 86克DMI·kg体重-0。在含有日粮的大麦中为75％，在酪蛋白饮食中为49克DMI·kg BW 0.75mg / kg。大麦品种中氨基酸的消化率采用差异法（酪蛋白作为基础饲料），采用定量消化采集法测定。在两种大麦中，CP和氨基酸的pD没有差异。在两种大麦品种中，CP的pD没有变化。由于TRB脱皮，pD对于大多数不可缺少的氨基酸和对于Met和Cys在SRB中显着改善。向TRB添加10％外壳导致相当的Arg，His，Leu，Tyr，Trp与TRB相比，但Lys，Phe，Thr和Val的pD显着下降到低于TRB水平。在SRB中加入1％的外壳会使Lys的pD低于SRB水平。总之，向猪饲料中添加大麦壳会损害小肠中的氨基酸吸收。 pD值，在标准实验条件下测定（没有使用基础内源性氨基酸的校正），与NRC公布的真消化率值相似（1998 NRC.1998。猪的营养需求，第10版。 （修订版），华盛顿特区：国家科学院出版社。 [谷歌学术]）。
Dr Ulf Hennig [1];Siegfried Kuhla [2];Wolfgang B Souffrant [2];Armin Tuchscherer [3];Cornelia C Metges [2]. Effect of partial dehulling of two- and six-row barley varieties on precaecal digestibility of amino acids in pigs[J]. Archives of Animal Nutrition, 2006,60(3): 205-217