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Effect of wheat straw types on biological delignification and in vitro rumen degradability of wheat straws during treatment with Irpex lacteus
Animal Feed Science and Technology ( IF 3.2 ) Pub Date : 2020-09-01 , DOI: 10.1016/j.anifeedsci.2020.114558
Dongze Niu , Sasa Zuo , Jianjun Ren , Chunyu Li , Mingli Zheng , Di Jiang , Chuncheng Xu

Abstract Irpex lacteus was inoculated in eight different cultivars of wheat straw and incubated under solid-state conditions at 28 °C for 56 days to determine the effects of wheat straw types on the delignification and rumen degradability of wheat straw. The results showed that I. lacteus degraded 625 g/kg of lignin (sa) and increased 320 g/kg of neutral detergent soluble after 56 days of incubation on average. Corresponding to lignin degradation, the average in vitro dry matter digestibility and gas production of the treated wheat straw were improved by 21 % and 32 %, respectively, and the mean ratio of acetate and propionate decreased from 3.68 to 2.99. It is concluded that I. lacteus has broad adaptability to variations in wheat straw and its use is a promising means to improve their nutritional value.

中文翻译:

小麦秸秆类型对 Irpex 乳杆菌处理期间小麦秸秆生物脱木素和体外瘤胃降解能力的影响

摘要 将 Irpex lacteus 接种在 8 个不同的小麦秸秆品种中,并在 28 ℃ 的固态条件下培养 56 天,以确定小麦秸秆类型对小麦秸秆脱木素和瘤胃降解性的影响。结果表明,在培养 56 天后,乳杆菌平均降解 625 g/kg 木质素 (sa) 并增加 320 g/kg 中性洗涤剂可溶物。与木质素降解相对应,处理过的麦秆的平均体外干物质消化率和产气量分别提高了 21% 和 32%,醋酸盐和丙酸盐的平均比率从 3.68 下降到 2.99。结果表明,I. lacteus 对小麦秸秆的变异具有广泛的适应性,其使用是提高其营养价值的一种有前景的手段。
更新日期:2020-09-01
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