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

氨碱复合处理对水稻秸秆营养成分和瘤胃降解特性的影响

  • 姜明明 ,
  • 马玉林 ,
  • 陈旭 ,
  • 刘帅 ,
  • 肖鉴鑫 ,
  • 王靖俊 ,
  • 卢娜 ,
  • 曹志军 ,
  • 刘大森
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  • 1. 东北农业大学动物科学技术学院, 哈尔滨 150030;
    2. 中国农业大学动物科学技术学院, 动物营养学国家重点实验室, 北京 100193
姜明明(1979-),男,河南新蔡人,博士研究生,研究方向为反刍动物营养与饲料。E-mail:15046336911@163.com

收稿日期: 2020-01-13

  网络出版日期: 2020-07-15

基金资助

秸秆微贮关键技术研究与集成示范(201805510411370)

Effects of Ammonia-Alkali Compound Treatment on Nutrient Composition and Rumen Degradation Characteristics of Rice Straw

  • JIANG Mingming ,
  • MA Yulin ,
  • CHEN Xu ,
  • LIU Shuai ,
  • XIAO Jianxin ,
  • WANG Jingjun ,
  • LU Na ,
  • CAO Zhijun ,
  • LIU Dasen
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  • 1. College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, China;
    2. State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China

Received date: 2020-01-13

  Online published: 2020-07-15

摘要

本试验旨在研究氨碱复合处理对水稻秸秆营养成分和瘤胃降解特性的影响。试验分为4个组,3个试验组分别在水稻秸秆中添加4.0%氢氧化钙(Ⅰ组)、2.5%尿素+4.0%氢氧化钙(Ⅱ组)、9.0%玉米浆+2.5%尿素+4.0%氢氧化钙(Ⅲ组),对照组无添加。发酵袋室温密封15 d后采集样品,分析常规营养成分,分别测定各组水稻秸秆的干物质(DM)、中性洗涤纤维(NDF)、酸性洗涤纤维(ADF)和粗蛋白质(CP)在0、6、12、24、36、48、72、96 h的瘤胃降解率和降解参数。结果表明:1)Ⅱ和Ⅲ组水稻秸秆的CP含量显著高于对照组和Ⅰ组(P<0.05),Ⅲ组显著高于Ⅱ组(P<0.05);Ⅰ、Ⅱ和Ⅲ组水稻秸秆的NDF和ADF含量均显著低于对照组(P<0.05);Ⅲ组水稻秸秆的粗脂肪(EE)含量显著高于其他各组(P<0.05)。2)Ⅰ、Ⅱ和Ⅲ组的瘤胃DM、NDF、ADF有效降解率显著高于对照组(P<0.05),Ⅲ组显著高于Ⅱ组(P<0.05),Ⅱ组显著高于Ⅰ组(P<0.05)。Ⅱ和Ⅲ组的瘤胃CP有效降解率显著高于对照组和Ⅰ组(P<0.05),Ⅲ组显著高于Ⅱ组(P<0.05)。综上所述,氨碱复合处理可以降低水稻秸秆的NDF和ADF含量,提高CP含量,提高水稻秸秆瘤胃中DM、NDF、ADF和CP的有效降解率。水稻秸秆经9.0%玉米浆+2.5%尿素+4.0%氢氧化钙复合处理效果最好。

本文引用格式

姜明明 , 马玉林 , 陈旭 , 刘帅 , 肖鉴鑫 , 王靖俊 , 卢娜 , 曹志军 , 刘大森 . 氨碱复合处理对水稻秸秆营养成分和瘤胃降解特性的影响[J]. 动物营养学报, 2020 , 32(7) : 3181 -3189 . DOI: 10.3969/j.issn.1006-267x.2020.07.028

Abstract

This experiment was conducted to study the effects of ammonia-alkali compound treatment on nutrient composition and rumen degradation characteristics of rice straw. The experiment was divided into 4 groups, the rice straw in 3 experimental groups were added 4.0% calcium hydroxide (group Ⅰ), 2.5% urea+ 4.0% calcium hydroxide (group Ⅱ) and 9.0% corn steep liquor+2.5% urea+4.0% calcium hydroxide (group Ⅲ), and no addition in the control group. After 15 days of storage in fermentation bag under room temperature, samples were collected and analyzed for conventional nutrient composition, and measured the rice straw rumen degradation rate and degradation parameter of dry matter (DM), neutral detergent fiber (NDF), acid detergent fiber (ADF) and crude protein (CP) at 0, 6, 12, 24, 36, 48, 72 and 96 h in each group. The results showed as follows:1) the content of CP in rice straw of groups Ⅱ and Ⅲ was significantly higher than that of control group and group Ⅰ (P<0.05), and group Ⅲ was significantly higher than that of group Ⅱ (P<0.05); the contents of NDF and ADF in rice straw of groups Ⅰ, Ⅱ and Ⅲ were significantly lower than those of the control group (P<0.05); and the content of ether extract in rice straw of group Ⅲ was significantly higher than that of other groups (P<0.05). 2) The effective degradabilities of DM, NDF and ADF in rumen of groups Ⅰ, Ⅱ and Ⅲ were significantly higher than those of the control group (P<0.05), group Ⅲ was significantly higher than group Ⅱ (P<0.05), and group Ⅱ was significantly higher than group Ⅰ (P<0.05). The effective degradability of CP in rumen of groups Ⅱ and Ⅲ was significantly higher than that of control group and group Ⅰ (P<0.05), group Ⅲ was significantly higher than group Ⅱ (P<0.05). In conclusion, ammonia-alkali compound treatment can decrease the contents of NDF and ADF in rice straw, increase the CP content, and increase the effective degradabilities of DM, NDF, ADF and CP in rumen of rice straw. The rice straw compound treated by 9.0% corn steep liquor+2.5% urea+4.0% calcium hydroxide has the best effect.

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