Relationship between hydroxycinnamic acid content, lignin composition and digestibility of maize silages in sheep |
| |
Authors: | Novo-Uzal Esther Taboada Alfredo Rivera Antonio Flores Gonzalo Barceló Alfonso Ros Masa Antón Pomar Federico |
| |
Institution: | Department of Animal Biology, Plant Biology and Ecology, University of A Coru?a, A Coru?a, Spain. |
| |
Abstract: | Cell wall-bound hydroxycinnamic acids and the composition of lignin were studied in relation to the digestibility of a collection of 91 maize silages in wethers. Total lignin and guaiacyl content showed the highest correlation coefficients with digestibility. Using the above-mentioned chemical parameters, eight equations were also developed to predict digestibility. The prediction of organic matter digestibility produced a high adjusted R2 value (0.487) using total lignin, guaiacyl, esterified ferulic acid and esterified p-coumaric acid content as predictors. The prediction of in vivo dry matter digestibility produced a higher adjusted R2 value (0.516) using the same variables as predictors. Cell wall digestibility depends on a multiplicity of factors and it is not possible to attribute a causal effect on in vivo digestibility to any single factor. However, total lignin, guaiacyl and p-coumaric acid content emerge as good predictors of digestibility. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|