| 不同酶制剂在生长猪小麦型日粮中应用效果的研究 |
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| 引用本文： | 王前光,刘秋,高惠林,贺建华.不同酶制剂在生长猪小麦型日粮中应用效果的研究[J].中国畜牧兽医,2009,36(10):16-20. |
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| 作者姓名： | 王前光 刘秋 高惠林 贺建华 |
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| 作者单位： | （1.常德职业技术学院， 常德 415000； 2.湖南农业大学动物科技学院， 长沙 410128） |
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| 摘 要： | 本研究选用4种不同的酶制剂（E1、E2、欧蒂酶(OT)、木聚糖酶），以小麦基础日粮为试验材料，探讨不同酶制剂在生长猪小麦日粮中的应用效果。采用单因素试验设计，选用112头体重19.34 kg左右的二元（长×大）杂交猪，随机分为7个处理组，每组4个重复，每个重复4头猪，公母各半。试验期8周，分为0～2周、2～4周和4～8周3个阶段，饲喂日粮分别为玉米型日粮、小麦基础日粮、小麦基础日粮+不同酶制剂（E1，E2，欧蒂酶，木聚糖酶）和低能小麦型日粮+欧蒂酶，考察酶制剂对生长猪生产性能的影响；同时，另选6头体重在20 kg左右的二元（长×大）杂交阉公猪于回肠末端安装T型瘘管，采用6×6拉丁方试验设计进行消化试验，利用内源指示剂法(AIA)测定酶制剂对营养物质的表观回肠和粪消化率。试验结果表明，与小麦基础组相比，小麦日粮中添加酶制剂能提高生长猪的平均日增重，2～4周时有提高趋势（P=0.10）；与小麦对照组相比较，E1组全期平均日增重差异不显著（P>0.05）， 木聚糖酶组和E2组差异显著（P<0.05），欧蒂酶组差异极显著（P<0.01）。小麦日粮中添加酶制剂均能显著降低生长猪全期料重比（P<0.05）；同时，酶制剂能显著降低生长猪4～8周及全期的腹泻率（P<0.05），E2组、欧蒂酶组、木聚糖酶组达极显著水平（P<0.01）；消化试验结果表明，酶制剂有提高日粮中蛋白质和能量的粪表观消化率，但差异不显著（P>0.05）；酶制剂的添加有提高能量的回肠表观消化率的趋势（P=0.10）；E2、欧蒂酶、木聚糖酶的添加能显著提高粗蛋白质的回肠表观消化率（P<0.05），E1组差异不显著（P>0.05）。
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| 关 键 词： | 小麦 酶制剂 生产性能 营养物质消化率 生长猪 |
Study on Effect of Different Enzyme Preparations in Wheat-based Diet for Growing Pigs |
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| WANG Qian-guang,LIU Qiu,GAO Hui-lin,HE Jian-hua.Study on Effect of Different Enzyme Preparations in Wheat-based Diet for Growing Pigs[J].China Animal Husbandry & Veterinary Medicine,2009,36(10):16-20. |
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| Authors: | WANG Qian-guang LIU Qiu GAO Hui-lin HE Jian-hua |
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| Institution: | (1.Changde Vocational Technical College, Changde 415000, China;2. College of Animal Science and Technology, Hunan Agricultural University, Changsha 410128, China) |
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| Abstract: | Four enzyme preparations (E1，E2，OT，Xylanase) were evaluated by animal feeding trial using wheat-type diets for growing pigs. Using a single factor design，112 heads of crossbred (Landrace×Yorkshire) piglets about 19.34 kg were selected and divided into 7 treatments (4 duplicates per treatment and each duplicates had 4 piglets with the male/female=1∶1) randomly，to investigate the effect of different enzymes on performance of growing pigs．The duration of feed trial was 8 weeks，and divided into three phases (week 0 to 2；2 to 4；4 to 8 respectively). The diets were as follows：corn-based diet,wheat-based diet, wheat-based diet with E1,E2,OT and xylanase separately,lower-energy wheat-based diet with OT enzyme．Furthermore, another 6 heads of crossbred (Landrace×Yorkshire) barrows about 20 kg fitted with a simple “T” cannula at the terminal ileum were selected and conducted in a 6×6 Latin Square design to assay the apparent feces digestibility and ileal digestibility using AIA.The results indicated that adding enzymes can improve the ADG compared with wheat-based diet, and have the tendacy to improve the ADG during the week 2 to 4 (P=0.10). There is no significant effect on the ADG of E1 treatment in whole trail (P>0.05).Other enzymes can increase the ADG significantly(P<0.05) and OT treatment (P<0.01) had higher ADG than the control treatment. Adding enzymes to wheat-based diet can significantly decrease the F/G in whole trail(P<0.05)，and significantly decrease the diarrhea ratio from 4 to 8 weeks and the whole trial (P<0.05).E2，OT，Xylanase treatment get to positively significant level(P<0.01). Compared with wheat-based diet, enzymes had no significant effect on apparent feces digestibility of CP and Energy for growing pigs (P>0.05). Enzymes supplementation had the tendacy to improve the apparent ideal digestibility of energy (P=0.10).E2，OT，Xylanase can significant improve the apparent ileal digestibility of CP(P<0.05), but there was no significant effect by adding E1(P>0.05). |
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| Keywords: | wheat enzyme preparations performance nutrient digestibility growing pig |
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