饲料工业2026，Vol.47Issue(17)：17-22,6.DOI:10.13302/j.cnki.fi.2026.17.003
基于CNCPS体系与体外发酵技术的5种常见树叶类饲料营养价值评价
Evaluation of Nutritional Value of Five Common Tree Leaf-Based Feeds Based on CNCPS and in Vitro Fermentation Technology
摘要
Abstract
This study aimed to systematically evaluate the nutritional value and fermentation characteristics of five common unconventional tree leaf roughages from the Qinghai-Tibet Plateau.A comparative analysis of poplar leaves,locust leaves,willow leaves,elm leaves,and pine needles was conducted by combining conventional nutrient composition analysis,the Cornell Net Carbohy-drate and Protein System(CNCPS),and in vitro rumen fermentation techniques.The results showed that:①significant differences in nutrient composition were observed among different tree leaves(P<0.05).Locust leaves had significantly higher crude protein(CP),calcium(Ca),phosphorus(P)and other mineral element contents than other tree leaves(P<0.05).Elm leaves had significantly higher ether extract(EE)and crude ash(Ash)contents than poplar leaves,willow leaves,locust leaves and pine needles(P<0.05).For fiber-related indexes,poplar leaves had significantly higher neutral detergent fiber(NDF)content than locust leaves,elm leaves and pine needles(P<0.05);willow leaves had significantly higher acid detergent fiber(ADF)content than the other four tree leaves(P<0.05);poplar leaves had significantly higher acid detergent lignin(ADL)content than the other four tree leaves(P<0.05).② CNCPS protein fraction analysis indicated that elm leaves had a higher true protein content than the other groups.There were significant differences in acid detergent lignin(ADL)and non-protein nitrogen(NPN)contents among all tree leaves(P<0.05).③ In vitro fermentation results showed that elm leaves had significantly higher 72 h cumulative gas production,total volatile fatty acid(TVFA)and propionic acid yields than the other four tree leaves(P<0.05),indicating stronger rumen degradation capacity.Comprehensive analysis demonstrated that all five kinds of tree leaves possessed good feeding potential,and elm leaves had the optimal comprehensive nutritional value and rumen fermentation characteristics.关键词
树叶类饲料/康奈尔净碳水化合物-蛋白质体系/营养价值/体外产气/体外发酵Key words
tree leaf roughages/Cornell Net Carbohydrate and Protein System/nutritional value/in vitro gas production/in vitro fermentation分类
农业科技引用本文复制引用
马丽,李百慧,张剑搏,赵国君,窦全林,王世贵,张群英,郝力壮..基于CNCPS体系与体外发酵技术的5种常见树叶类饲料营养价值评价[J].饲料工业,2026,47(17):17-22,6.基金项目
青海省自然科学基金杰出青年基金项目[2024-ZJ-905] （）
青海省"昆仑英才·高端创新创业人才"拔尖、领军人才项目[302108-k9924066、QHKLYCGDCXCY-2024-071] （）
青海省"昆仑英才·乡村振兴人才"农业农村科技攻关人才项目 （）
2025年青海大学两级财政科研实力提升项目-创新团队培育计划项目[2025KTST04] （）
青海大学畜牧学学科"牦牛营养与饲料科学研究生导师创新团队"项目[2025] （）
