青刈黑麦抽穗期干物质体外消化率与细胞壁结构物质的关系  

Relationship between in vitro Dry Matter Digestibility and Cell Wall Structural Matter of Forage Rye at Heading Stage

作　　者：周志平[1] 顾洪如[2] 沈益新[1] 丁成龙[2] 许能祥[1] 

机构地区：[1]南京农业大学动物科技学院,江苏南京210095 [2]江苏省农业科学院畜牧研究所,江苏南京210014

出　　处：《江苏农业学报》2008年第1期71-74,共4页Jiangsu Journal of Agricultural Sciences

基　　金：江苏省科技攻关项目(BE2001387)

摘　　要：选用8个不同品系的青刈黑麦(Secal cerealeL.)为试验材料,研究其抽穗期干物质体外消化率与细胞壁结构物质的关系。结果表明:①抽穗期干物质(IVDMD)不同熟期类型间差异不显著;②早熟类型干物质纤维素含量与IVDMD呈显著负相关(r=0.670*),晚熟类型干物质纤维素含量与IVDMD呈极显著负相关(r=-0.936**),早熟、晚熟类型干物质纤维素消化率与IVDMD无显著相关;③IVDMD与半纤维素含量及消化率、木质素含量及其消化率无显著相关。The experiment was conducted to study the in vitro dry matter digestibility （ IVDMD ）, cell wall structural matter content and the relationship between IVDMD and cell wall structural matter of forage rye at heading stage. The results were showed as follows ：①No significant difference in IVDMD existed among different maturity types of forage rye at heading stage;②There were significant negative correlations between IVDMDs and cellulose contents in the dry matter of both early and late maturity types of forage rye, with r = 0. 670 and r = 0. 936 , respectively;③The correlations between IVDMD and hemicellulose content and hemicellulose digestibility and the correlations between IVDMD and lignin content and lignin digestibility were not significant.

关 键 词：抽穗期干物质(IVDMD) 半纤维素 木质素 纤维素 相关性 

分 类 号：S543.603[农业科学—作物学]