添加植酸酶对生长猪玉米豆粕型饲粮养分消化利用率的影响  

Effects of phytase added in corn-soybean meal diet on coefficient of digestibility and utilization of dietary nutrients for growing pigs

作　　者：夏中生[1] 廖志超[1] 黄所含[1] 宁淑芳[1] 封伟贤 谢建华 卢玉发 詹志春 

机构地区：[1]广西大学动物科学技术学院,广西南宁530005 [2]广西彼得汉预混饲料有限公司,广西南宁530023 [3]武汉新华扬生物有限公司,湖北武汉430074

出　　处：《广西农业生物科学》2006年第4期336-340,共5页Journal of Guangxi Agricultural and Biological Science

基　　金：广西科技攻关项目(桂科攻0424001-2)

摘　　要：选用体重2 0 kg左右的杜×长×大三元杂去势公猪,随机分为4组,进行消化代谢试验,测定玉米豆粕型基础饲粮(Ⅰ组)和以植酸酶250 U/kg(Ⅱ组)、500 U/kg(Ⅲ组)、750 U/kg(Ⅳ组)取代基础饲粮中40%、60%、80%的磷酸氢钙的试验饲粮中的粗蛋白质等养分的消化利用率。采用全收粪法进行两期消化代谢试验。结果表明:与对照组(Ⅰ组)相比,Ⅱ、Ⅲ、Ⅳ组的蛋白质表观消化率分别提高了3.50%、2.45%、2.32%,组间差异不显著(P>0.05);蛋白质生物学价值分别提高了5.75%、6.29%、6.62%,组间差异不显著(P>0.05);粗纤维表观消化率分别提高30.09%、54.10%(P<0.05)、13.07%;钙的表观消化率分别提高了4.02%、13.82%(P<0.05)、2.20%;磷的表观消化率分别提高了8.20%、47.36%(P<0.05)、13.39%;饲粮可消化能分别提高了1.89%、7.69%(P<0.05)、4.83%。Crossbred DLY （Duroc × Landrace × Yorkshire） growing castrated pigs about 20 kg in initial body weight （BW） were randomly divided into 4 groups. Digestive and metabolic trial of two body weight （20 kg and 30 kg） phases was carried out to determine the digestibility and utilization efficiency of dietary nutrients, such as crude protein , crude fiber, calcium and phosphorus of diet Ⅰ ,Ⅱ, Ⅲ,Ⅳ . Diet （control diet） was corn-soybean meal diet supplemented with 1.4% dicalcium phosphate, diet Ⅱ , Ⅲ , Ⅳ was the control diets in which 40%, 60% or 80~/00 of dicalcium phosphate was replaced with 250,500 or 750 phytase units per kilogram of diet respectively. The results showed that comparing with diet Ⅰ , the apparent digestibility of crude protein in diet Ⅱ , Ⅲ ,Ⅳ increased by 3.50% （P〉0. 05）, 2.45%（P〉0. 05） or 2.32% （P〉0. 05）, respectively; the protein biological value increased by 5.75% （P〉0. 05）, 6.29% （P〉0. 05） or 6.62% （P〉0. 05） respectively; the apparent digestibility of crude fiber increased by 30.09% （P 〉 0. 05）, 54.10% （P〈0. 05） or 13. 07% （ P〉 . 05 ） respectively ; theapparent digestihility of calciumimproved by 4.02%（ P〉 0. 0,5 ） , 13.82 %（P〈0.05） or 2.20% （P〉0.05） respectively; the apparent digestibility of phosphorus increased by 8.20% （P〉0. 05）, 47.36% （P〈0. 05）or 13.39% （P〉O, 05）; and the dietary digestible energy increased by 1.89% （P〉0.05）, 7.69% （P〈0.05）, 4.83% （P〉0.05）, respectively.

关 键 词：植酸酶 生长猪 钙和磷 饲粮养分消化率 蛋白质生物学价值 

分 类 号：S828.5[农业科学—畜牧学]