动物营养学报2025，Vol.37Issue(3)：2066-2080,15.DOI:10.12418/CJAN2025.175
杂交构树叶片、叶柄、茎秆及全株的营养价值及分子结构特性研究
Study on Nutritive Values and Molecular Structural Features of Leaf,Petiole,Stem,and Whole Plant of Hybrid Broussonetia papyrifera
摘要
Abstract
This study aimed to compare and analyze the nutritive profiles and molecular structural features of different fractions(leaf,petiole,upper part of the stem,bottom part of the stem,and the whole plant)of the hybrid Broussonetia papyrifera variety,and to provide basic data for the development of unconventional rough-age resources for ruminants and the design of forage formulations.This study was conducted to assess the nutri-ent content of different parts of hybrid Broussonetia papyrifera using probabilistic nutrient analysis and Cornell net carbohydrate and protein system(CNCPS),and to analyze the molecular structural profiles of different parts of hybrid Broussonetia papyrifera using Fourier transform infrared(FTIR)spectroscopy technique.The results showed as follows:1)different parts of hybrid Broussonetia papyrifera exhibited varying nutrient com-positions and CNCPS fractions(P＜0.05).The contents of neutral detergent fiber(NDF),acid detergent fiber(ADF),acid detergent lignin(ADL),total carbohydrates(CHO),and cellulose in the bottom part of the stem were higher.The leaf had the highest value of crude protein(CP),soluble fiber(CB2),digestible fiber(CB3),and fiber-bound protein(PB2)contents.2)Different parts of hybrid Broussonetia papyrifera exhibi-ted varying molecular structural features of carbohydrates and protein(P＜0.05).The leaf possessed the highest peak height ratio of α-helix/β-sheet while the petiole had the lowest peak height ratios for both amideⅠ/amideⅡ and α-helix/β-sheet.3)Correlations were also observed between carbohydrate and protein molecular struc-tural data and their corresponding chemical components and CNCPS fractions(P＜0.05).In conclusion,differ-ent sections of hybrid Broussonetia papyrifera exhibit varying nutrient compositions and molecular structural properties.When designing ration formulations,full consideration should be given to the selected parts of hy-brid Broussonetia papyrifera and their relative proportions.Future efforts should focus on selecting hybrid Broussonetia papyrifera varieties with higher proportion of leaves and lower degree of lignification of the stem.In addition,appropriately increasing the cutting height of the plant can improve its nutritive values to animals.The correlations between chemical components and molecular structural data can provide information for devel-oping models for fast and non-destructiveness prediction of the nutritional value of hybrid Broussonetia papyrif-era.[Chinese Journal of Animal Nutrition,2025,37(3):2066-2080]关键词
杂交构树/营养价值/分子结构/FTIR/相关关系Key words
hybrid Broussonetia papyrifera/nutritive values/molecular structure/FTIR/correlation分类
农业科技引用本文复制引用
江雨霏,毕小兵,王茜,马涛,黄艳玲,史海涛..杂交构树叶片、叶柄、茎秆及全株的营养价值及分子结构特性研究[J].动物营养学报,2025,37(3):2066-2080,15.基金项目
国家重点研发项目(2022YFD1601605) （2022YFD1601605）
国家现代农业产业技术体系四川肉羊创新团队建设专项经费(SCCXTD-2024-14) （SCCXTD-2024-14）
西南民族大学双一流项目(XM2023005) （XM2023005）
国家民委中青年英才培养计划项目(2020) （2020）
