动物营养学报 >

2017 , Vol. 29 >Issue 3: 1074 - 1081

DOI: https://doi.org/10.3969/j.issn.1006-267x.2017.03.042

研究简报 Short communications

硬核油对瘤胃体外发酵及脂肪酸组成的影响

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  • 1. 中国农业科学院北京畜牧兽医研究所, 动物营养学国家重点实验室, 北京 100193;
    2. 中国农业科学院与 世界农用林业中心, 农用林业与可持续畜牧业联合实验室, 北京 100193;
    3. 湖南畜产品质量 安全协同创新中心, 长沙 410128;
    4. 中国科学院昆明植物研究所, 昆明 650201;
    5. 中国饲料工业协会, 北京 100125;
    6. 云南省热带作物科学研究所, 景洪 666100
孙玲玲(1993-),女,黑龙江哈尔滨人,硕士研究生,研究方向为反刍动物营养与饲料科学。E-mail:sunlingling114289@163.com

收稿日期: 2016-09-01

  网络出版日期: 2017-03-09

基金资助

“十二五”科技支撑（2012BAD12B02-5）；农产品质量安全监管（饲料）项目“反刍动物饲料安全评价”；中国农业科学院科技创新工程（ASTIP-IAS07）

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Effects of Scleropyrum wallichianum Oil on in Vitro Rumen Fermentation Characteristics and Fatty Acid Composition

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  • 1. State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China;
    2. CAAS-ICRAF Joint Lab on Agroforestry and Sustainable Animal Husbandry, Beijing 100193, China;
    3. Hunan Co-Innovation Center of Animal Production Safety, Changsha 410128, China;
    4. Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China;
    5. China Feed Industry Association, Beijing 100125, China;
    6. Yunnan Institute of Tropical Crops, Jinghong 666100, China

Received date: 2016-09-01

  Online published: 2017-03-09

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摘要

本研究利用体外产气法，探究饲粮中分别添加1%、2%、3%及4%（干物质基础）的硬核油对瘤胃体外发酵24 h产气参数、发酵参数及脂肪酸组成的影响，旨在确定硬核油在瘤胃发酵中的最适添加水平。结果表明：1）饲粮中添加硬核油对24 h产气量、理论最大产气量及产气速率无显著影响（P>0.05）。2）氨氮（P=0.044）、总挥发性脂肪酸（P<0.001）、乙酸（P<0.001）、丙酸（P=0.047）及丁酸浓度（P=0.017）随硬核油添加水平的增加呈二次曲线升高，且总挥发性脂肪酸及乙酸浓度在1%、2%及3%组显著高于对照组及4%组（P<0.05）；pH、微生物蛋白浓度、干物质降解率、中性洗涤纤维降解率及酸性洗涤纤维降解率未受硬核油添加的影响（P>0.05）。3）饱和脂肪酸的含量随硬核油添加水平的增加呈线性（P=0.008）及二次（P=0.028）降低，其中C18：0的含量也呈线性降低（P=0.030）；不饱和脂肪酸的含量随硬核油添加水平的增加呈线性（P=0.008）及二次（P=0.028）升高，其中t9-C18：1含量呈线性（P=0.002）、t11-C18：1含量呈二次（P<0.001）、c9-C18：1含量呈线性（P=0.028）和二次（P=0.005）升高，且t9-C18：1及c9-C18：1含量均在3%添加水平下出现最大值。在本试验条件下，1%、2%及3%添加水平的硬核油可提高瘤胃体外发酵不饱和脂肪酸含量，同时增加挥发性脂肪酸的浓度，3%添加水平效果最佳。

关键词： 硬核油; 产气参数; 发酵参数; 脂肪酸组成

本文引用格式

孙玲玲, 马露, 卜登攀, 许建初, 刘士杰, 何美莹 . 硬核油对瘤胃体外发酵及脂肪酸组成的影响[J]. 动物营养学报, 2017 , 29(3) : 1074 -1081 . DOI: 10.3969/j.issn.1006-267x.2017.03.042

Abstract

In order to find the optimal supplemental level of Scleropyrum wallichianum oil, the effects of adding 1%, 2%, 3% or 4% (dry matter basis) of Scleropyrum wallichianum oil in diet on 24 h rumen fermentation parameters, gas production parameters and composition of fatty acids were investigated using in vitro gas production method. The results showed as follows:1) there were no significant effects of adding Scleropyrum wallichianum oil in diet on 24 h gas production, theoretical maximum gas production and the rate of gas production (P>0.05). 2) The concentrations of ammonia nitrogen (P=0.044), total volatile fatty acid (P<0.001), acetate (P<0.001), propionate (P=0.047) and butyrate (P=0.017) quadratically increased as the level of Scleropyrum wallichianum oil increased, besides, the concentrations of total volatile fatty acid and acetate of 1%, 2% and 3% groups were significantly higher than those in control group and 4% group (P<0.05); there were no significant effects of adding Scleropyrum wallichianum oil on pH, microbe protein concentration, dry matter degradation rate, neutral detergent fiber degradation rate and acid detergent fiber degradation rate (P>0.05). 3) The content of saturated fatty acid was linearly (P=0.008) and quadratically decreased(P=0.028) as the level of Scleropyrum wallichianum oil increased, and C18:0 content was linearly decreased (P=0.030), too; the content of unsaturated fatty acid was linearly (P=0.008) and quadratically increased (P=0.028) as the level of Scleropyrum wallichianum oil increased, t9-C18:1 content was linearly (P=0.002), t11-C18:1 content was quadratically (P<0.001) and c9-C18:1 was linearly (P=0.028) and quadratically increased (P=0.005), and t9-C18:1and c9-C18:1 reached maximum values under the adding level of 3%. Under the conditions of the present study, the levels of 1%, 2% and 3% Scleropyrum wallichianum oil can increase the contents of unsaturated fatty acids and the concentrations of volatile fatty acids, and the level of 3% has the best effect.

Key words： Scleropyrum wallichianum oil; gas production parameters; fermentation parameters; composition of fatty acids

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