Extensive research in recent years into the use of various fiber sources in poultry nutrition has led to the perception that dietary fiber is more than a simple diet diluent. Several studies showed that the feeding of insoluble fiber sources such as oat hulls, sunflower hulls or wood shavings may affect digestive physiology and function improving chickens health and growth performance. In this context, the effect of lignocellulose as an insoluble dietary fiber source is increasingly being investigated. Lignocellulose is a component of plant cell walls and consists mainly of the insoluble carbohydrate polymers cellulose and hemicelluloses as well as the phenolic polymer lignin. Lignocellulose is chemically and physicochemically different from other insoluble fiber sources and thus possibly has different effects on poultry compared to traditional fiber sources. Several studies investigated the effect of dietary lignocellulose on growth performance, nutrient digestibility, gastrointestinal tract development and intestinal microbiota in broilers and laying hens. Studies differed in terms of feed formulation and lignocellulose inclusion level as well as products of different suppliers were used. The results obtained are inconsistent; beneficial, indifferent or detrimental effects of feeding lignocellulose were observed, so that a final assessment of lignocellulose as a “novel” insoluble fiber source is difficult. This review article summarizes the results of studies in connection with the feeding of lignocellulose to poultry, compares them with those that have used other insoluble fiber sources and illuminates the possible mechanisms of action.

中文翻译：

---

木质纤维素作为家禽营养中的不溶性纤维来源：综述

近年来对各种纤维来源在家禽营养中使用的广泛研究导致人们认为膳食纤维不仅仅是一种简单的膳食稀释剂。多项研究表明，饲喂燕麦壳、向日葵壳或刨花等不溶性纤维来源可能会影响消化生理和功能，从而改善鸡的健康和生长性能。在这种情况下，越来越多地研究木质纤维素作为不溶性膳食纤维来源的影响。木质纤维素是植物细胞壁的一种成分，主要由不溶性碳水化合物聚合物纤维素和半纤维素以及酚类聚合物木质素组成。木质纤维素在化学和物理化学上与其他不溶性纤维来源不同，因此与传统纤维来源相比，对家禽的影响可能不同。多项研究调查了日粮木质纤维素对肉鸡和蛋鸡的生长性能、养分消化率、胃肠道发育和肠道微生物群的影响。研究在饲料配方和木质纤维素含量以及使用不同供应商的产品方面存在差异。得到的结果不一致；观察到喂食木质纤维素的有益、无关紧要或有害的影响，因此很难最终评估木质纤维素作为“新型”不溶性纤维来源。