超微粉碎与添加复合外源酶制剂对生长猪脱脂米糠饲粮中矿物质和氨基酸消化率的影响

发布时间：2018-05-03 17:29

本文选题：脱脂米糠 + 超微粉碎　；参考：《畜牧与兽医》2017年10期

【摘要】：研究了超微粉碎(平均几何粒径50μm)与添加复合外源酶制剂(内含植酸酶、纤维素酶、木聚糖酶和阿魏酸酯酶)2种处理对生长猪脱脂米糠饲粮中矿物质和氨基酸消化率的影响。选择4头平均体重为45 kg的三元(杜×长×大)杂交去势公猪,在其回肠末端安装T-瘘管,饲喂按照2×2因子设计的4种试验饲粮(脱脂米糠基础饲粮(平均几何粒径450μm)、超微粉碎脱脂米糠饲粮、脱脂米糠加酶饲粮和超微粉碎脱脂米糠加酶饲粮),采用4×4拉丁方试验安排进行消化试验。结果表明:(1)超微粉碎显著提高了Cu的回肠表观消化率(AID)和Mg的全消化道表观消化率(ATTD)(P005),对其他矿物质消化率无影响;添加复合外源酶制剂显著提高了Ca、Zn、总磷的AID(P005),显著提高了Ca、Mg、Zn、植酸磷(P005)以及总磷(P001)的ATTD;超微粉碎与添加复合外源酶制剂结合使用极显著提高了Ca、Zn以及总磷的AID(P001),显著提高了Mg、Zn的ATTD(P005),极显著提高了Ca、总磷、植酸磷的ATTD(P001)。(2)超微粉碎、添加复合外源酶制剂以及二者互作对必需氨基酸、非必需氨基酸、总氨基酸和粗蛋白(CP)的AID均无显著影响(P005),但使CP的AID分别提高了163%,320%,382%(P005),ATTD分别提高433%,498%,415%(P005),对粗蛋白ATTD的改善效果优于AID。结论:超微粉碎处理对生长猪脱脂米糠饲粮中大多数矿物元素和主要氨基酸的AID和ATTD无显著影响;添加复合外源酶制剂处理则能显著提高脱脂米糠多种矿物元素的AID和ATTD,改善CP的AID,但对氨基酸的AID无显著影响;超微粉碎与添加外源酶制剂对脱脂米糠饲粮多种矿物元素以及CP的AID和ATTD的改善表现出明显的协同效果。
[Abstract]:The effects of ultrafine grinding (mean geometric particle size 50 渭 m) and adding compound exogenous enzymes (including phytase, cellulase, xylanase and ferulic acid esterase) on the digestibility of minerals and amino acids in the diet of defatted rice bran of growing pigs were studied. Four crossbred ovariectomized boars with an average weight of 45 kg (du 脳 long 脳 large) were selected and Tfistula was installed at the end of the ileum of the ovariectomized boars. Four kinds of experimental diets (defatted rice bran basal diet (average geometric particle size 450 渭 m), ultra-fine pulverized defatted rice bran diet were fed with 2 脳 2 factor. The digestion experiment was carried out with 4 脳 4 Latin square experiment arrangement for defatted rice bran plus enzyme diet and ultrafine pulverized defatted rice bran plus enzyme diet. The results showed that the apparent digestibility of Cu and mg were significantly increased by superfine grinding. The apparent digestibility of the whole digestive tract of mg was not affected by the apparent digestibility of other minerals. The addition of compound exogenous enzyme significantly increased the ATTDof CaOZN, AIDP005N of total phosphorus, Ca-MgZn, P005 (P005) and P001), and the combination of ultrafine pulverization and the addition of compound exogenous enzyme increased the AIDP001C and AIDP001of Ca-Zn and TP significantly. ATTDN P005N, which is high in MgO Zn, has greatly increased Ca, TP, Phosphorus phytate (ATTDX P001N. P001U. 2) ultrafine grinding, adding compound exogenous enzyme preparation and the interaction of the two essential amino acids, non-essential amino acids, The total amino acid and crude protein AID had no significant effect on P005, but the AID of CP increased 163320 and 382 respectively, and P005 increased 433498and P005, respectively. The improvement effect of CP on crude protein ATTD was better than that of ATTD. Conclusion: the AID and ATTD of most mineral elements and main amino acids in the diet of defatted rice bran were not significantly affected by ultrafine grinding. The AID and ATTDs of various mineral elements in defatted rice bran were significantly increased by adding the compound exogenous enzyme preparation, and the AID of CP was improved, but the AID of amino acid was not significantly affected. The superfine pulverization and the addition of exogenous enzymes showed significant synergistic effects on the improvement of many mineral elements in the diet of defatted rice bran as well as the AID and ATTD of CP.
【作者单位】：南京农业大学动物科技学院;
【基金】：国家自然科学基金项目(31172237)
【分类号】：S828.5

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