动物营养学报2018，Vol.30Issue(4)：1320-1332,13.DOI:10.3969/j.issn.1006-267x.2018.04.015
不同来源豆粕对大恒肉鸡的能量和氨基酸营养价值评定
Nutritional Evaluation of Energy and Amino Acid in Different Source Soybean Meals for Daheng Broilers
摘要
Abstract
This experiment was conducted to evaluate the energy and amino acid nutritional value of different source soybean meals based on the appropriate amount of feed by force?feeding with true metabolizable energy (TME)assay for Daheng broilers. A total of 12 soybean meals were collected from representative feed compa?ny in Sichuan province, to evaluate the metabolizable energy and true amino acid availability(TAAA). The metabolic energy evaluation was divided into 3 batches, and in each batch, 48 conventional Daheng broilers were randomly assigned to 6 groups with 8 replicates each and 1 chicken in each replicate. The TAAA evalua?tion was divided into 3 batches, and in each batch, 36 caecectomized broilers were randomly assigned to 6 groups with 6 replicates each and 1 chicken in each replicate. An endogenous group and 10?day recovery in each batch were set up. In the TME assay,the test broilers were fasted for 48 h before the soybean meals were forced feeding, and the 48 h excreta was collected. The endogenous group was continued to fast and collected the excreta for 48 h. The results showed that the average contents of dry matter(DM), crude protein(CP), neutral detergent fiber(NDF),acid detergent fiber(ADF),crude fibre(CF),ether extract(EE)and ash as well as the mean of gross energy(GE)in 12 soybean meals were 85.74%, 52.81%, 13.61%, 6.47%, 6.67%,1.52%,6.63% and 19.790 MJ/kg,respectively. The coefficient of variation(CV)of NDF,CF and EE were greater than 15%. The average amino acid content and CV of 12 soybean meals were ranged from 0.56% to 7.99% and from 6.36% to 10.94%. The contents and CV of total essential amino acids,total non?es?sential amino acids, and total amino acids were 19.26% and 7.35%, 24.66% and 7.10%, 43.92% and 7.18%, respectively. The means of apparent metabolizable energy(AME), nitrogen corrected apparent me?tabolizable energy(AMEn), TME and nitrogen corrected true metabolizable energy(TMEn)of 12 soybean meal samples were 12.523,12.933,12.795 and 12.339 MJ/kg,respectively. Significant differences were ob?served in metabolic energy of different source soybean meals(P<0.05). The means of TAAA in 12 soybean meals were 78.16% to 94.38% and there were significant differences among different sources(P<0.05). It is concluded that:1)the metabolizable energy of 12 different source soybean meals are varied in Daheng bro?liers, and the means of AME,AMEn,TME and TMEn are 12.523,12.933,12.795 and 12.339 MJ/kg,re?spectively. 2)The TAAA of different source soybean meals are varied in Daheng broliers. The mean of TAAA in total essential amino acids is 84.32%.关键词
大恒肉鸡/豆粕/代谢能/氨基酸利用率Key words
Daheng broilers/soybean meal/metabolizable energy/amino acid availability分类
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张婵娟,王建萍,丁雪梅,曾秋凤,白世平,张克英..不同来源豆粕对大恒肉鸡的能量和氨基酸营养价值评定[J].动物营养学报,2018,30(4):1320-1332,13.基金项目
四川省肉鸡产业链项目(2012NZ0037,2016NZ0003-02) （2012NZ0037,2016NZ0003-02）
