1Department of Animal Resource and Science,Dankook University,Anseodong,Cheonan,Choongnam 330-714,Korea.
2CTC Bio Inc.,Seoul,Korea.
Animal. 2016 Jul;10(7):1148-54. doi: 10.1017/S1751731116000082. Epub 2016 Feb 9.
Apparent ileal digestibility (AID) of energy, dry matter (DM), nitrogen (N) and amino acids and standardized ileal digestibility (SID) of amino acids in low quality soybean meals with different CP concentration (SBM 44% CP and SBM 48% CP) with or without 400 U β-mannanase/kg supplementation were evaluated in 20 cannulated barrows ((Landrace×Yorkshire)×Duroc) with an average BW of 25.08±3.42 kg. A N-free diet was used to determine basal endogenous losses of amino acids. The supplementation of β-mannanase improved (P0.05) AID of N and energy. The type of SBM (SBM 44% CP v. SBM 48% CP) had no effect on AID of DM, N and energy. β-mannanase improved (P<0.05) AID of sum of essential amino acids, arginine, histidine, lysine, valine and glycine. The SID of lysine was higher (P<0.05) in enzyme supplemented than in non-supplemented diets. Larger AID and SID of threonine and proline (P<0.05) were observed in SBM 48% CP than in SBM 44% CP. In conclusion, the supplementation of enzyme improved AID of arginine, histidine, lysine, valine and glycine, but it did not cause marked difference in SID of these amino acids except for lysine. The low nutrient digestibility of the SBM sources used in the present experiment might have favoured the positive effect of β-mannanase supplementation.
评价了不同 CP 浓度（SBM44%CP 和 SBM48%CP）低质豆粕添加或不添加 400Uβ-甘露聚糖酶/千克对 20 头（长白猪×约克夏猪）×杜洛克猪（平均 BW25.08±3.42kg）能量、干物质（DM）、氮（N）和氨基酸表观回肠消化率（AID）和氨基酸标准回肠消化率（SID）的影响。使用无氮日粮来确定氨基酸的基础内源性损失。β-甘露聚糖酶的添加提高了 N 和能量的 AID（P0.05）。豆粕类型（SBM44%CP 与 SBM48%CP）对 DM、N 和能量的 AID 没有影响。β-甘露聚糖酶提高了（P<0.05）必需氨基酸总和、精氨酸、组氨酸、赖氨酸、缬氨酸和甘氨酸的 AID。添加酶提高了赖氨酸的 SID（P<0.05）。苏氨酸和脯氨酸的 AID 和 SID 更大（P<0.05）在 SBM48%CP 中比在 SBM44%CP 中。综上所述，酶的添加提高了精氨酸、组氨酸、赖氨酸、缬氨酸和甘氨酸的 AID，但除了赖氨酸外，SID 没有明显差异。本试验所用豆粕原料养分消化率低，可能有利于β-甘露聚糖酶添加的积极作用。
