动物营养学报 >

2018 , Vol. 30 >Issue 4: 1367 - 1376

DOI: https://doi.org/10.3969/j.issn.1006-267x.2018.04.019

反刍动物营养 Ruminant nutrition

不同饲养模式下饲粮非纤维性碳水化合物/中性洗涤纤维对生长期杜寒杂交母羊生长性能、营养物质表观消化率和甲烷产量的影响

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  • 1. 塔里木大学动物科学技术学院, 阿拉尔 843300;
    2. 中国农业科学院饲料研究所, 农业部饲料生物技术重点实验室, 北京 100081;
    3. 金陵科技学院动物科学与技术学院, 南京 210038
周艳(1991-),女,新疆伊犁人,硕士研究生,从事动物营养与饲料科学研究。E-mail:1141387117@qq.com

收稿日期: 2017-09-25

  网络出版日期: 2018-04-03

基金资助

政府间国际科技创新合作重点专项"反刍动物甲烷排放测算模型及基于宏基因组学的减排技术"（2016YFE0109000）；国家自然科学基金"绵羊甲烷排放的粪便反射特征光谱研究"（41475126）；新疆生产建设兵团博士资金专项经费资助（2014BB017）

收起

Effects of Different Dietary Non-fiber Carbohydrate (NFC)/Neutral detergent Fiber (NDF) on Growth Performance, Nutrient Apparent Digestibility and Methane Emissions of Growing Dorper and Thin-Tailed Han Crossbred Ewes

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  • 1. Institute of Animal Science and Technology, Tarim University, Alar 843300, China;
    2. Key Laboratory of Feed Biotechnology of the Ministry of Agriculture, Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China;
    3. College of Animal Science and Technology, Jinling Institute of Technology, Nanjing 210038, China

Received date: 2017-09-25

  Online published: 2018-04-03

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摘要

本试验旨在借助开路式呼吸测热系统研究饲粮非纤维性碳水化合物（NFC）/中性洗涤纤维（NDF）对生长期杜寒杂交母羊生长性能、营养物质表观消化率及甲烷产量的影响。采用单因素试验设计，选取体况良好、体重为（27.8±0.5）kg的母羊30只，根据体重一致原则，分配到3组，各组饲粮NFC/NDF分别为0.78（精粗比为35 ∶ 65）、1.03（精粗比为50 ∶ 50）、2.17（精粗比为65 ∶ 35），每组10只羊。试验期为25 d，包括3 d调整期、7 d预试期和15 d正试期。结果表明：在NFC/NDF=0.78组自由采食和其他组限饲条件下，3组试验羊的初始体重和结束体重以及平均日增重无显著性差异（P>0.05）。当饲粮NFC/NDF由0.78增加至2.17时，干物质采食量显著降低（P<0.05），干物质、有机物和粗蛋白质表观消化率显著增加（P<0.05），NDF和酸性洗涤纤维（ADF）表观消化率无显著性差异（P>0.05）。当饲粮NFC/NDF由0.78增加至2.17时，甲烷能、单位干物质采食量的甲烷产量、单位总能摄入量的甲烷能产量显著降低（P<0.05）。结果提示，在平均日增重一致的前提下，高NFC/NDF饲粮料重比较低，且甲烷转化效率较低；对生长期杜寒杂交母羊来说，限饲条件下饲喂NFC/NDF为2.17的饲粮在提高生产效益的同时又兼顾甲烷减排，效果相对最佳。

关键词： 甲烷; 非纤维性碳水化合物/中性洗涤纤维; 生长性能; 消化代谢; 呼吸测热

本文引用格式

周艳, 许贵善, 董利锋, 邓凯东, 马涛, 刁其玉 . 不同饲养模式下饲粮非纤维性碳水化合物/中性洗涤纤维对生长期杜寒杂交母羊生长性能、营养物质表观消化率和甲烷产量的影响[J]. 动物营养学报, 2018 , 30(4) : 1367 -1376 . DOI: 10.3969/j.issn.1006-267x.2018.04.019

Abstract

The objective of the present study was to investigate the effects of dietary non-fiber carbohydrate (NFC)/neutral detergent fiber (NDF) on growth performance, nutrient apparent digestibility and methane emissions of Dorper and thin-tailed Han crossbred ewes using open-respiration system. Thirty healthy ewes weighted (27.8±0.5) kg were allocated to three groups, with a single factor experiment design, according to their body weight. Dietary NFC/NDF was 0.78, 1.03 and 2.17, respectively, and concentrate to forage ratio was 35:65, 50:50 and 65:35, respectively. Each group had 10 ewes. The whole experiment lasted for 25 d with 3 d of adjustment, 7 d of pre-test and 15 d of test. The results showed as follows:under the condition of ad libitum in NFC/NDF=0.78 group and dietary restriction in other groups, there were no significant differences in initial body weight, final body weight and average daily gain (ADG) among groups (P>0.05). As dietary NFC/NDF increased from 0.78 to 2.17, dry matter intake (DMI) was significantly decreased (P<0.05), whereas dry matter, organic matter and crude protein apparent digestibility were significantly increased(P<0.05), but no significant differences were observed in NDF and acid detergent fiber (ADF) apparent digestibility among groups (P>0.05). As dietary NFC/NDF increased from 0.78 to 2.17, methane energy, methane emission per unit of DMI, methane energy emission per unit of gross energy intake were significantly decreased (P<0.05). In conclusion, under the similar ADG, lower feed to gain ratio and methane emission are observed in high NFC/NDF diet; it is appropriate to offer growing ewes diet with NFC/NDF of 2.17, which can increase production efficiency and control methane emission.

Key words： methane; non-fiber carbohydrate/neutral detergent fiber; growth performance; nutrient apparent digestibility; respirometry

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