动物营养学报Issue(2)：453-465,13.DOI:10.3969/j.issn.1006-267x.2014.02.022
饼粕类饲料原料中添加果胶酶对肉鸡回肠氨基酸消化率和代谢能的影响
Effects of Pectinase in Meal Type Diets on Ileal Amino Acid Digestibility and Metabolizable Energy of Broilers
摘要
Abstract
This study was conducted to investigate the effects of pectinase in meal type diets on ileal amino acid digestibility and metabolizable energy of broilers.A total of 780 one-day-old male Ross 308 broilers were ran-domly divided into 13 treatments (6 replicates per treatment and 10 broilers per replicate), the 12 treatments of them were fed soybean meal, cottonseed meal and rapeseed meal type semi-purified diets, respectively, which were all with pectinase group and control group.Another one treatment was fed a nitrogen-free diet to deter-mine endogenous amino acid losses.Total feces of broilers were collected from 20 to 22 days of age to deter-mine the effects of pectinase on the metabolizable energy of broilers, and the terminal half of ileal digesta was collected at 23 days of age to determine the effects of pectinase on amino acid digestibility of broilers.The re-sults showed as follows:1) the apparent metabolizable energy ( AME) and apparent metabolizable energy cor-rected for nitrogen ( AMEn) of the high quality soybean meal were significantly higher than those of normal soybean meal ( P<0 .01 ) , the AME and AMEn of three kinds of cottonseed meals had significant differences (P<0.05), and the values of them from high to low were cottonseed protein, dephenol cottonseed meal and general cottonseed meal.After adding pectinase, the AME and AMEn of two kinds of soybean meals had a tend of increase (P=0.066 and P=0.064, respectively), and the AME and AMEn of three kinds of cotton-seed meals were significantly increased ( P<0 .01 ) , while the AME and AMEn of rapeseed meal had no sig-nificant change (P>0.05).2) There was no significant difference on standardized ileal digestibility (SID) of most amino acids between two kinds of soybean meals except phenylalanine, tyrosine and aspartic acid ( P>0 .05 ) , and the SID of all amino acids was significantly different between three kinds of cottonseed meals ( P<0 .05 ) .The SID of the methionine and proline of two kinds of soybean meals was increased by pectinase supplementation (P=0.087 and P=0.082, respectively).The SID of some amino acids of three kinds of cottonseed meals showed the interaction effect between pectinase and cottonseed meal (P<0.05).The SID of most amino acids of rapeseed meal was increased by pectinase supplementation (P>0.05).In conclusion, the AME, AMEn and amino acid SID of the same ingredient with different processes are different, and the supple-mentation of pectinase can increase the metabolizable energy and amino acid digestibility except rapeseed meal.关键词
肉鸡/果胶酶/代谢能/回肠/氨基酸消化率Key words
broiler/pectinase/metabolizable energy/ileal/amino acid digestibility分类
农业科技引用本文复制引用
雷廷,呙于明,王耀辉,宁冬,罗璇..饼粕类饲料原料中添加果胶酶对肉鸡回肠氨基酸消化率和代谢能的影响[J].动物营养学报,2014,(2):453-465,13.基金项目
公益性行业（农业）科研专项 （）
