Wang Hong Liang, Shi Meng, Xu Xiao, Ma Xiao Kang, Liu Ling, Piao Xiang Shu
State Key Laboratory of Animal Nutrition, Ministry of Agriculture Feed Industry Centre, China Agricultural University, Beijing 100193, China.
Asian-Australas J Anim Sci. 2017 Jul;30(7):999-1005. doi: 10.5713/ajas.16.0775. Epub 2017 Jan 2.
Two experiments were conducted to determine the content of digestible energy (DE) and metabolizable energy (ME) as well as the apparent ileal digestibility (AID) and standardized ileal digestibility (SID) of crude protein (CP) and amino acids (AA) in barley grains obtained from Australia, France or Canada.
In Exp. 1, 18 growing barrows (Duroc×Landrace×Yorkshire; 31.5±3.2 kg) were individually placed in stainless-steel metabolism crates (1.4×0.7×0.6 m) and randomly allotted to 1 of 3 test diets. In Exp. 2, eight crossbred pigs (30.9±1.8 kg) were allotted to a replicate 3×4 Youden Square designed experiment with three periods and four diets. Two pigs received each diet during each test period. The diets included one nitrogen-free diet and three test diets.
The relative amounts of gross energy (GE), CP, and all AA in the Canadian barley were higher than those in Australian and French barley while higher concentrations of neutral detergent fiber, acid detergent fiber, total dietary fiber, insoluble dietary fiber and β-glucan as well as lower concentrations of GE and ether extract were observed in the French barley compared with the other two barley sources. The DE and ME as well as the SID of histidine, isoleucine, leucine and phenylalanine in Canadian barley were higher (p<0.05) than those in French barley but did not differ from Australian barley.
Differences in the chemical composition, energy content and the SID and AID of AA were observed among barley sources obtained from three countries. The feeding value of barley from Canada and Australia was superior to barley obtained from France which is important information in developing feeding systems for growing pigs where imported grains are used.
进行两项试验，以测定从澳大利亚、法国或加拿大获得的大麦籽粒中可消化能量（DE）和代谢能（ME）的含量，以及粗蛋白（CP）和氨基酸（AA）的表观回肠消化率（AID）和标准回肠消化率（SID）。
在试验1中，将18头生长育肥公猪（杜洛克×长白×大白；31.5±3.2千克）单独放入不锈钢代谢笼（1.4×0.7×0.6米）中，并随机分配到3种试验日粮中的一种。在试验2中，将8头杂交猪（30.9±1.8千克）分配到一个重复的3×4尤登方设计试验中，该试验有三个阶段和四种日粮。每个试验阶段有两头猪接受每种日粮。日粮包括一种无氮日粮和三种试验日粮。
加拿大大麦中的总能（GE）、CP和所有AA的相对含量高于澳大利亚和法国大麦，而与其他两种大麦来源相比，法国大麦中中性洗涤纤维、酸性洗涤纤维、总膳食纤维、不溶性膳食纤维和β-葡聚糖的浓度较高，而GE和乙醚提取物的浓度较低。加拿大大麦中组氨酸、异亮氨酸、亮氨酸和苯丙氨酸的DE、ME以及SID高于法国大麦（p<0.05），但与澳大利亚大麦无差异。
在从三个国家获得的大麦来源中，观察到化学成分、能量含量以及AA的SID和AID存在差异。加拿大和澳大利亚大麦的饲喂价值优于法国大麦，这对于开发使用进口谷物的生长猪饲养系统来说是重要信息。
