黄羽肉鸡不同来源高粱表观代谢能的评定及其养分消化率的比较

发布时间：2018-04-22 04:07

本文选题：黄羽肉鸡 + 高粱　；参考：《动物营养学报》2017年10期

【摘要】：本试验旨在评定黄羽肉鸡不同来源高粱的表观代谢能(AME),并比较其养分消化率的差异。试验采用单因素随机设计,选择56日龄健康黄羽肉鸡公鸡24羽,随机分为4个组,每组6个重复,每个重复1羽。用美国高粱、湖南高粱和内蒙古高粱分别替代基础饲粮中20%玉米作为试验饲粮,采用套算法计算美国高粱、湖南高粱和内蒙古高粱的AME,并比较其养分消化率的差异。试验期7 d,分为预试期(第1~4天)和正试期(第5~7天)2个阶段。结果表明:1)内蒙古高粱的AM E最高,比美国高粱和湖南高粱分别高12.17%和15.81%(P0.01)。2)内蒙古高粱的粗纤维(CF)表观消化率最高,分别比美国高粱和湖南高粱高23.81%和27.87%(P0.01);美国高粱次之,比湖南高粱高3.28%(P0.01)。内蒙古高粱的粗脂肪(EE)表观消化率极显著低于湖南高粱0.50%(P0.01)。不同来源高粱的粗蛋白质(CF)、干物质(DM)、粗灰分(Ash)和无氮侵出物(NFE)表观消化率均无显著差异(P0.05)。由此得出,通过套算法测定了美国高粱、湖南高粱和内蒙古高粱的AME分别为13.39、12.97和15.02 MJ/kg。不同来源高粱除AME、EE和CF表观消化率差异显著外,其余各养分表观消化率均无显著差异。
[Abstract]:The purpose of this study was to evaluate the apparent metabolic energy (AMEA) of sorghum from different sources of yellow broilers and to compare their nutrient digestibility. A single factor random design was used to select 24 healthy yellow feather broilers at 56 days of age and were randomly divided into 4 groups with 6 replicates in each group and 1 in each group. American sorghum, Hunan sorghum and Inner Mongolia sorghum were used to substitute 20% corn in basal diet as experimental diet. The AMEs of American sorghum, Hunan sorghum and Inner Mongolia sorghum were calculated by using a set of algorithms, and the difference of nutrient digestibility was compared. The trial period was 7 days, which was divided into two stages: pretest period (1st day, 4th day) and positive trial period (day 5, day 7). The results showed that the AM E of Inner Mongolia sorghum was the highest, 12.17% and 15.81% higher than that of American sorghum and Hunan sorghum, respectively. The apparent digestibility of CFC of Inner Mongolia sorghum was the highest, 23.81% and 27.87% higher than that of American sorghum and Hunan sorghum, respectively. It was 3.28% higher than Hunan sorghum. The apparent digestibility of crude fat in Inner Mongolia sorghum was significantly lower than that in Hunan. There was no significant difference in apparent digestibility of crude protein (CFC), dry matter (DMN), crude ash (DMC) and nitrogen-free (NFE) of sorghum from different sources (P 0.05). The AME of American sorghum, Hunan sorghum and Inner Mongolia sorghum were 13.3912.97 and 15.02 MJ / kg, respectively. Except for the apparent digestibility of AMEEE and CF, there was no significant difference in the apparent digestibility of all nutrients in sorghum from different sources.
【作者单位】：湖南农业大学动物科学技术学院饲料安全与高效利用教育部工程研究中心湖南畜禽安全生产协同创新中心;
【基金】：国家重点研发计划(2016YFD0501209) 2014科技部科技基础性工作专项(2014FY111000-3)
【分类号】：S831.5

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