动物营养学报2019，Vol.31Issue(2)：792-800,9.DOI:10.3969/j.issn.1006-267x.2019.02.035
生长期肉鸡玉米和玉米干酒糟及其可溶物的代谢能和净能评定
Evaluation of Metabolizable Energy and Net Energy of Corn and Corn Distillers Dried Grains with Soluble for Growing Broilers
摘要
Abstract
In this study, an open-circuit calorimeter for poultry was used for energy metabolism test, two ex-periments were designed to measure the metabolizable energy ( ME) and net energy ( NE) of corn and corn distillers dried grains with soluble ( DDGS) for growing broilers. A total of 180 male ROSS 308 broilers ( 25 to 28 days of age) were selected for experiments 1 and 2, respectively. The experiments used an approximate Latin square design, and formulated 2 basic diets and 4 test diets, 6 replicates with 10 broilers per replicate for 1 diet. In experiment 1, each test corn ( Jijing 511 and Jinong 823) replaced 40% of the corn-soybean meal basal diet. In experiment 2, 30% corn DDGS ( Zhongliang and Jiran) was used to replace the part of energy of corn-soybean meal basal diet. Experiments 1 and 2 were divided into 3 periods, respectively and each one was 31 days, and 60 male broilers were used in each period and randomly divided into 3 groups with 20 broilers per group. The broilers were fed in chicken houses with different pens for 1 to 20 days. After weighing, 4 broilers were selected in each pen on day 21 and then were put into individual respiration chamber to measure the gase-ous exchange and total excreta for 9 days, including a 3-day dietary adaptation period, a 3-day respiratory calo-rimetry and a 3-day fasting heat production, and digestion metabolism tests were carried out simultaneously. The results showed as follows: 1 ) in experiment 1, apparent metabolizable energy ( AME ) , ME intake ( MEI) , retained energy ( RE) , NE in corn test diets were significantly higher as compared with the basal diet ( P<0.05) . The average daily gain ( ADG) , heat production ( HP) , fasting heat production ( FHP) , respira-tion quotient ( RQ) , NE/AME were not influenced by test diets ( P>0.05) . 2) In experiment 2, the average daily feed intake ( ADFI) , MEI, HP in corn DDGS test diets were significantly higher than those in basal diets ( P<0.05) ; the AME, RE, NE, NE/AME in test diets were significantly lower as compared with the basal di-et ( P<0.05) ; the ADG, FHP, RQ were not influenced by the test diets ( P>0.05) . As corn Jijing 511 and Ji-nong 823 for ROSS 308 male broilers ( 25 to 28 days of age ) , the AME as DM basis were 13. 79 and 13.64 MJ/kg, and NE as DM basis were 10.77 and 10. 57 MJ/kg, respectively. As Zhongliang corn DDGS and Jiran corn DDGS for ROSS 308 male broilers (25 to 28 days of age) , the AME as DM basis were 10.37 and 10.74 MJ/kg, and NE as DM basis were 6.43 and 6.57 MJ/kg, respectively.[Chinese Journal of Animal Nutrition, 2019, 31(2) :792-800]关键词
肉鸡/净能/玉米/玉米DDGSKey words
broilers/NE/corn/corn DDGS分类
农业科技引用本文复制引用
班志彬,闫晓刚,杨华明,于维,宋坤烊,张莹,李立佳,郎朝丽,梁浩,苏斯瑶..生长期肉鸡玉米和玉米干酒糟及其可溶物的代谢能和净能评定[J].动物营养学报,2019,31(2):792-800,9.基金项目
吉林省农业科学院创新工程项目(CXGC2017ZY002) （CXGC2017ZY002）
