体外产气法和尼龙袋法评定苎麻的饲用价值

发布时间：2018-03-31 16:13

本文选题：苎麻　切入点：饲用价值　出处：《动物营养学报》2017年02期

【摘要】：本试验通过体外产气法和尼龙袋法对苎麻叶片、苎麻全株以及苎麻去纤维全株的饲用价值进行评定。采用体外产气法测定苎麻叶片、苎麻全株以及苎麻去纤维全株的72 h动态产气量,并求得产气参数;用上述3种原料进行尼龙袋试验,测定干物质(DM)、粗蛋白质(CP)、中性洗涤纤维(NDF)及酸性洗涤纤维(ADF)的降解率,求得降解参数。结果表明:1)产气试验中,苎麻全株72 h产气量及理论最大产气量均最高,显著高于最低的苎麻去纤维全株(P0.05),苎麻叶片居中,苎麻叶片与其他二者差异不显著(P0.05)。2)尼龙袋试验中,DM、CP、NDF及ADF的72 h降解率均为苎麻叶片苎麻全株苎麻去纤维全株;DM、NDF、ADF有效降解率也呈现相同的变化规律;然而CP有效降解率则表现为苎麻全株苎麻叶片苎麻去纤维全株。从体外产气量和有效降解率来看,苎麻叶片和苎麻全株的饲用价值要优于苎麻去纤维全株。
[Abstract]:The feeding value of Ramie leaf, Ramie whole plant and Ramie fiber free whole plant was evaluated by in vitro gas production method and nylon bag method, and the in vitro gas production method was used to determine Ramie leaf. The dynamic gas production of the whole Ramie plant and the whole Ramie fiber free plant was studied in 72 hours, and the gas production parameters were obtained, and the degradation rates of dry matter (DMN), crude protein (CPN), neutral detergent fiber (NDF) and acid detergent fiber (ADF) were measured by nylon bag test. The degradation parameters were obtained. The results showed that the total gas production and the theoretical maximum gas production of Ramie were the highest in 72 h, significantly higher than that of the lowest Ramie fiber defibrillated whole plant (P0.05), and the middle of Ramie leaves. There was no significant difference between Ramie leaves and the other two (P0.05. 2) in the nylon bag test, the degradation rates of CPNDF and ADF were the same as the effective degradation rate of DMNDF / ADF of Ramie leaves, which were the same as those of Ramie leaves. However, the effective degradation rate of CP was the whole Ramie leaf Ramie fiber removal plant, and the feed value of Ramie leaf and Ramie whole plant was better than that of Ramie fiber removal whole plant from the point of view of in vitro gas production and effective degradation rate.
【作者单位】：扬州大学动物科学与技术学院;
【基金】：公益性行业(农业)科研专项(201303144) 苏北科技发展计划——科技富民强县项目(BN2014004) 江苏省高校优势学科(PAPD)
【分类号】：S816

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