动物营养学报2016，Vol.28Issue(8)：2360-2366,7.DOI:10.3969/j.issn.1006-267x.2016.08.006
临武鸭对添加复合酶棕榈粕和椰子粕的养分、氨基酸和能量的利用率
Effects of Palm Kernel Meal and Copra Meal Supplemented with Compound Enzymes on Nutrient, Amino Acid and Energy Utilization Rates of Linwu Ducks
摘要
Abstract
The aim of this study was to determine the effects of palm kernel meal ( PKM ) and copra meal ( CM) supplemented with compound enzymes on nutrient, amino acid and energy utilization rates of Linwu ducks. Forty healthy adult Linwu ducks with body weight of ( 2. 0 ± 0. 2 ) kg were randomly divided into 5 groups with 8 replicates in each group and 1 duck in each replicate. The metabolizable experiment was carried out by hunger strike⁃gavage method. Ducks in groups 1 and 2 were fed 50 g PKM and ducks in groups 3 and 4 were fed 50 g CM by gavage, and ducks in group 5 were fed 50 g diet with no nitrogen by gavage. Diets of groups 2 and 4 were added with 250 mg/kg compound enzymes. The experiment included a 7 days pre⁃experi⁃mental period and a 4 days experimental period. The results showed as follows:1) the true utilization rates of dry matter (DM), crude protein (CP), ether extract (EE), crude fiber (CF) and gross energy (GE) of PKM were 48.81%, 54.34%, 65.69%, 40.36% and 39.37%, respectively. The apparent metabolizable ener⁃gy ( AME) and true metabolizable energy ( TME) were 6.18 and 7.49 MJ/kg, respectively. The true utiliza⁃tion rates of 15 kinds of amino acids were 50.28% to 87.97%. The true utilization rates of DM, CP, EE, CF and GE of CM were 52. 23%, 58. 49%, 70. 28%, 34. 67% and 54. 76%, respectively. The AME and TME were 7.47 and 9.64 MJ/kg, respectively. The true utilization rates of 15 kinds of amino acids were 58.53% to 90.21%. 2) Adding with compound enzymes, the apparent utilization rate and true utilization rate of CP in PKM and CM were significantly increased ( P<0.05); the TME increased by 5.61% and 3.63% ( P>0.05) , respectively; the true utilization rates of 15 kinds of amino acids increased by 0.27% to 7.36% and 0.67% to 4.99%, respectively; the true utilization rates of tyrosine and proline in PKM, and the true utilization rates of aspartate, isoleucine and tyrosine in CM were significantly increased ( P<0.05) . The results indicate that PKM and CM supplemented with compound enzymes containing protease, cellulase and xylanase can improve utiliza⁃tion rates of nutrient and energy of Linwu ducks.关键词
棕榈粕/椰子粕/养分利用率/代谢能/复合酶/临武鸭Key words
palm kernel meal/copra meal/nutrient utilization rate/metabolizable energy/compound en-zymes/Linwu ducks分类
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张旭,蒋桂韬,王向荣,李闯,黄璇,吴端钦,戴求仲..临武鸭对添加复合酶棕榈粕和椰子粕的养分、氨基酸和能量的利用率[J].动物营养学报,2016,28(8):2360-2366,7.基金项目
国家水禽产业技术体系建设专项资金资助 （）
