反刍与草食动物营养与饲料 RUMINANT AND HERBIVORE NUTRITION AND FEED

不同料型草产品对羊草营养成分、康奈尔净碳水化合物-蛋白质体系碳水化合物组分及体外消化的影响

  • 徐生阳 ,
  • 谢艺潇 ,
  • 李文麒 ,
  • 孙志强 ,
  • 玉柱
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  • 中国农业大学草业科学与技术学院, 北京 100193
徐生阳(1996-),男,陕西榆林人,硕士研究生,从事天然牧草加工方面的研究。E-mail:2351640552@qq.com

收稿日期: 2020-03-31

  网络出版日期: 2020-11-16

基金资助

国家牧草产业技术体系(CARS-35);优质青粗饲料资源开发利用示范项目(16190051);宁夏回族自治区重点研发计划项目(2017BY082)

Effects of Different Types of Grass Products on Nutrient Composition, Carbohydrate Composition of Cornell Net Carbohydrate-Protein System and in Vitro Digestion of Leymus chinensis

  • XU Shengyang ,
  • XIE Yixiao ,
  • LI Wenqi ,
  • SUN Zhiqiang ,
  • YU Zhu
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  • College of Grassland Science and Technology, China Agricultural University, Beijing 100193, China

Received date: 2020-03-31

  Online published: 2020-11-16

摘要

本试验旨在探讨不同料型草产品对羊草营养成分、康奈尔净碳水化合物-蛋白质体系(CNCPS)碳水化合物组分及体外消化的影响。试验将羊草加工成了青贮、人工干燥干草、天然干燥干草、草颗粒和草粉共5种形式的草产品,然后测定发酵指标、营养指标和消化性能。结果表明:中性洗涤纤维(NDF)与酸性洗涤纤维(ADF)的含量在草颗粒中最低。草颗粒中糖类(CA)和非结构性碳水化合物(CNSC)的含量显著高于其他草产品(P<0.05)。草颗粒的干物质消化率最高。当发酵时间为48 h时,草颗粒与草粉的产气量显著高于青贮、天然干燥干草和人工干燥干草(P<0.05)。综上所述,相较于其他草产品,草颗粒营养成分含量较高,更易于发酵和消化。

本文引用格式

徐生阳 , 谢艺潇 , 李文麒 , 孙志强 , 玉柱 . 不同料型草产品对羊草营养成分、康奈尔净碳水化合物-蛋白质体系碳水化合物组分及体外消化的影响[J]. 动物营养学报, 2020 , 32(11) : 5341 -5346 . DOI: 10.3969/j.issn.1006-267x.2020.11.039

Abstract

The study was aimed to explore the effects of different types of grass products on nutrient composition, carbohydrate composition of Cornell net carbohydrate-protein system (CNCPS) and in vitro digestion of Leymus chinensis. The Leymus chinensis were processed into 5 kinds of grass products, including silage, artificial dry hay, natural dry hay, grass particles and grass powder, and then measured and analyzed the fermentation indexes, nutrition indexes and digestive performance. The results showed that the contents of neutral detergent fiber (NDF) and acid detergent fiber (ADF) were the lowest in grass particles. The contents of carbohydrate (CA) and non-structure carbohydrate (CNSC) in grass particles were significantly higher than those in other grass products (P<0.05). The dry matter digestibility of grass particles was the highest. When the fermentation time was 48 h, and the gas production of grass particles and grass powder was significantly higher than that of silage, natural dry hay and artificial dry hay (P<0.05). In summary, compared with other grass products, the nutrient contents of grass particles are higher, and grass particles are easier to ferment and digest.

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