饲料营养 Feed Science and Technology

不同地域玉米秸化学成分、瘤胃发酵特性和能量价值比较

  • 刘强林 ,
  • 张元庆 ,
  • 白元生 ,
  • 孟庆翔 ,
  • 周振明 ,
  • 任丽萍 ,
  • 赵金维 ,
  • 高书文
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  • 1. 动物营养学国家重点实验室, 中国农业大学动物科技学院, 北京 100193;
    2. 山西省农科院畜牧兽医研究所, 太原 030032;
    3. 山西省生态畜牧产业管理站, 太原 030001;
    4. 北京金维福仁清真食品有限公司, 北京 102611;
    5. 山西省忻州市畜禽繁育工作站, 忻州 034000

收稿日期: 2013-09-22

  网络出版日期: 2014-01-27

基金资助

国家肉牛牦牛产业技术体系项目(CARS-38);动物营养学国家重点实验室开放课题(2004DA125184F1208);北京市共建项目(201202910411136)

Comparison of Chemical Composition, in Vitro Ruminal Fermentation Characteristics and Energy Values of Maize Stover Derived from Different Planting Locations

  • LIU Qianglin ,
  • ZHANG Yuanqing ,
  • BAI Yuansheng ,
  • MENG Qingxiang ,
  • ZHOU Zhenming ,
  • REN Liping ,
  • ZHAO Jinwei ,
  • GAO Shuwen
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  • 1. Stake Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China;
    2. Institute of Animal Science and Veterinary Medicine, Shanxi Academy of Agricultural Sciences, Taiyuan 030032, China;
    3. Shanxi Province Ecology and Livestock Industry Management Station, Taiyuan 030001, China;
    4. Beijing Jinwei Furen Halal Food Co., Ltd., Beijing 102611, China;
    5. Livestock and Poultry Breeding Workstation of Xinzhou City in Shanxi Province, Xinzhou 034000, China

Received date: 2013-09-22

  Online published: 2014-01-27

摘要

本试验旨在以采自北京大兴(BJ)、河北文安(HB)、吉林公主岭(JL)、山西太原(SX)、江苏徐州(JS)5个地域的同一品种玉米秸作为试验材料,通过化学分析和体外人工瘤胃产气法比较其化学成分、瘤胃发酵特性及能量价值的差异。采用单因素完全随机化试验设计。结果表明:不同地域来源玉米秸的粗蛋白质、粗脂肪和粗灰分含量最高的玉米秸分别高出含量最低的49.0%(P<0.05)、51.5%(P<0.05)和52.3%(P<0.01);体外发酵的玉米秸24和72 h净产气量和产气速度c以来源于BJ的玉米秸最高(P<0.01),SX最低(P<0.01),其余各组居于其间;与其他地域来源的玉米秸相比,BJ玉米秸体外发酵的pH(P<0.05)、氨态氮浓度最低(P<0.01),但丙酸摩尔比例最高(P<0.05或P>0.05);不同地域的玉米秸体外有机物消化率、总可消化养分含量、消化能、代谢能和增重净能值最高值较最低值分别高出20.1%、13.6%、13.7%、13.6%和43.2%(P<0.01)。由本试验可知,不同地域来源的玉米秸在化学成分、体外瘤胃发酵参数(除乙酸和异丁酸摩尔比例外)、产气量、有机物消化率含量和能量价值方面存在显著差异,在采用玉米秸作为肉牛粗饲料时,应对其化学成分和能量价值进行实际测定或估测。

本文引用格式

刘强林 , 张元庆 , 白元生 , 孟庆翔 , 周振明 , 任丽萍 , 赵金维 , 高书文 . 不同地域玉米秸化学成分、瘤胃发酵特性和能量价值比较[J]. 动物营养学报, 2014 , 26(2) : 496 -503 . DOI: 10.3969/j.issn.1006-267x.2014.02.027

Abstract

Using the same maize stover variety derived from five planting locations as test materials, the present study was to compare the differences in their chemical composition, ruminal fermentation characteristics and energy values based on chemical analysis and in vitro rumen gas production (CP) techniques by a single factorial completely randomized experimental design. The maize stover was collected from Daxing district of Beijing (BJ), Wen'an county of Hebei province (HB), Gongzhuling city of Jilin province (JL), Taiyuan city of Shanxi province (SX) and Xuzhou city of Jiangsu province (JS), respectively. The results showed as follows: the highest contents of crude protein (CP), ether extract (EE) and ash in maize stover were 49.0% (P<0.05), 51.5% (P<0.05) and 52.3% (P<0.01) higher than the lowest of those in maize stover, respectively. As for the net 24 h-and 72 h-GP and GP rate (c), the maize stover from BJ was the highest (P<0.01), that from SX was the lowest (P<0.01), and the others were in-between. Compared with maize stover from the other locations, the maize stover from BJ had the lowest both pH (P<0.05) and ammonia concentration (P<0.01), while the highest propionate molar percentage (P<0.05 or P>0.05). The highest organic matter digestibility (OMD), total digestible nutrient (TDN) content, digestible energy (DE), metabolizable energy (ME) and net energy for gain (NEg) in maize stover were 20.1%, 13.6%, 13.7%, 13.6% and 43.2% higher than the lowest those in maize stover, respectively (P<0.01). In conclusion, chemical composition, GP, ruminal fermentation characteristics (except acetate and iso-butyrate molar ratios), OMD and energy values of maize stover were found to be significantly different among different planting locations. Therefore, it is recommended that when maize stover is used for feeding beef cattle, its chemical composition and energy values are required to actually be determined or estimated.

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