摘要
Three experiments were conducted to determine the digestible (DE) and metabolizable energy (ME) content (Exp. 1), the apparent (AID) and standardised ileal digestibility (SID) of amino acids (AA) (Exp. 2) in hulled and dehulled corn and the performance of weanling pigs fed diets containing hulled or dehulled corn (Exp. 3). In Exp. 1, 18 growing barrows (19.8 ± 0.9 kg) were fed a rice–soybean meal basal diet or two experimental diets. The two experimental diets were formulated to contain 38.6% hulled or dehulled corn which replaced 40% of the energy supplied by rice, soybean meal and lysine to determine the energy content as well as the apparent total tract digestibility (ATTD) of nutrients and energy of hulled and dehulled corn using the difference method. There were no differences in the DE (15.9 MJ/kg vs. 16.3 MJ/kg) and ME (15.6 MJ/kg vs. 15.6 MJ/kg) content in hulled and dehulled corn, respectively, but the ATTD of dry matter (DM; 92.5% vs. 88.9%) and organic matter (OM; 93.9% vs. 89.8%) were higher in dehulled corn than hulled corn (p < 0.01). In Exp. 2, 24 growing barrows (28.0 ± 1.6 kg) were fitted with a T-cannula in the distal ileum, allotted to one of the four diets with six pigs fed each diet. The four diets comprised of the basal diet and the two experimental diets from Exp. 1 as well as a nitrogen-free diet that was used to measure the basal endogenous losses of crude protein (CP) and AA. Results from Exp. 2 indicate that there is no improvement of the AID or SID of CP and AA in dehulled corn compared with hulled corn. In Exp. 3, 72 piglets weaned at the age of 35 d (8.3 ± 1.2 kg) were allotted to two diets based on hulled or dehulled corn and formulated to contain equal quantities of ME and SID of AA. The ATTD of DM, OM and gross energy were higher (p < 0.01) in pigs fed diets containing dehulled corn than those fed diets containing hulled corn. However, performance of pigs fed diets containing hulled or dehulled corn was not different. In conclusion, dehulled corn increased nutrient digestibility, but did not improve pig performance. Therefore, there does not appear to be any justification for the routine inclusion of dehulled corn in diets fed to weaned pigs
摘要译文
三个实验以确定氨基酸可消化（DE）和可代谢能（ME）含量（实验1），表观（AID）和标准化的回肠消化率（SID）（AA）（实验。2）去壳去皮和玉米，断奶仔猪饲喂含去壳去皮或玉米日粮（实验3）的性能。在进出口。 1，18阉增长（19.8±0。9千克）饲喂稻谷，豆粕基础日粮，两个试验日粮。这两个试验日粮配制成含38。6％去壳或去皮玉米以取代由水稻提供的能量的40％，豆粕和赖氨酸，以确定能量含量的去壳及去壳玉米利用差分法，以及营养物的表观总消化道消化率（ATTD）和能量。有在DE没有差异（15.9兆焦耳/千克与16.3兆焦耳/千克）和ME（15.6兆焦耳/千克与15.6兆焦耳/千克）在船壳和去壳玉米，分别的内容，但干物质ATTD（DM ; 92.5％比88。9％）和有机物（OM; 93.9％对89.8％）是去皮的玉米比去壳的玉米（对高分配给四个日粮饲喂日粮每6头猪之一。四个饮食包括基础日粮和两个实验饮食的进出口。1以及被用来测量粗蛋白（CP）和AA的基底内源性损失无氮的饮食。结果从进出口。2表明，有没有改善CP和AA的去皮玉米去壳的玉米相比，援助或SID的。在进出口。 3，仔猪72断奶35天（8.3±1岁。2公斤）被分配到两种饮食的基础上去壳去皮或玉米，制定含有等量的ME和AA的SID。 DM，OM和总能量的ATTD较高（P01）在饲喂含玉米去皮比饲喂含去壳玉米饲料。但是，猪生产性能饲喂含去壳去皮或玉米是没有什么不同。结论，去壳玉米增加营养物质的消化率，但并没有提高猪的生产性能。因此，有没有出现任何理由例行纳入去皮玉米日粮饲喂断奶仔猪
Dewen Liu[a][b]; Ling Liu[a]; Defa Li[a] ; Fenglai Wang[a][*]. Energy content and amino acid digestibility in hulled and dehulled corn and the performance of weanling pigs fed diets containing hulled or dehulled corn[J]. Archives of Animal Nutrition, 2013,67(4): 301-313