豆类混合物对分批和连续培养(RUSITEC)系统瘤胃发酵、甲烷和微生物产氮的影响

IF 1.2 4区 农林科学 Q3 AGRICULTURE, DAIRY & ANIMAL SCIENCE
B. Kelln, G. Penner, S. Acharya, T. McAllister, J. Mckinnon, A. Saleem, B. Biligetu, H. Lardner
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引用次数: 0

摘要

在两个实验中评估了cicer milvetch(Astragus cicer L.)和sainfoin(Onobrychis vicifolia Scop.)对瘤胃发酵、甲烷产生和微生物氮合成的影响。实验1分析了2种豆科植物,即在营养期和晚花期与紫花苜蓿(Medicago sativa)以5个包含率0:100孵育的cicer milvetch和sainfoin;在分批培养中分别为25:75、50:50、75:25和100:0(以DM计)。实验2分析了在连续培养系统(RUSITEC)中以25:75、50:50、75:25和100:0的比例(以DM计)孵育的营养型cicer milvetch和苜蓿。在分批培养中,营养紫云英包合物增加了干物质消失(DMD)、丙酸酯百分比(%,总)和甲烷减少(mg g-1 DMD)。在RUSITEC中,DMD线性增加(P<0.01),乙酸盐与丙酸盐的比例呈二次下降,而氨(NH3-N)浓度(P<0.01)和丁酸盐百分比(总百分比)随着cicer Milvetch的加入而线性下降(P<0.05)。甲烷(CH4)产量(mg g-1 DMD)或短链脂肪酸(SCFA)产量(mmol d-1)没有观察到差异。微生物氮合成和蛋白质合成效率随着紫云英含量的增加而线性增加(P<0.05)。结果表明,在瘤胃发酵过程中,cicer-mailvetch可能导致能量和氮的同步性,从而提高牛的产量。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Effect of mixtures of legume species on ruminal fermentation, methane and microbial nitrogen production in batch and continuous culture (RUSITEC) systems
The effect of cicer milkvetch (Astragalus cicer L.) and sainfoin (Onobrychis viciifolia Scop.) on ruminal fermentation, methane production, and microbial nitrogen synthesis was assessed in two experiments. Experiment 1 analyzed 2 legumes, cicer milkvetch and sainfoin at 2 stages (vegetative and late flower) incubated with alfalfa (Medicago sativa) at 5 inclusion rates 0:100; 25:75, 50:50, 75:25 and 100:0 (as DM) in batch culture. Experiment 2 analyzed vegetative cicer milkvetch and alfalfa incubated in ratios of 25:75, 50:50, 75:25 and 100:0 (as DM) in continuous culture systems (RUSITEC). In batch culture, increased dry matter disappearance (DMD), and propionate percentage (%, total), and reduced methane (mg g-1 DMD) occurred with vegetative cicer milkvetch inclusion. In RUSITEC, DMD linearly increased (P < 0.01), acetate:propionate ratio quadratically decreased, while ammonia (NH3-N) concentration (P<0.01) and butyrate percentage (% total) linearly decreased (P<0.05) with increasing inclusion of cicer milkvetch. No differences were observed for methane (CH4) production (mg g-1 DMD), or short chain fatty acid (SCFA) production (mmol d-1). Microbial nitrogen synthesis and efficiency of protein synthesis linearly increased (P<0.05) with increased inclusion of cicer milkvetch. Results suggest cicer milkvetch may result in synchronicity of energy and nitrogen during rumen fermentation, which could enhance cattle production.
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来源期刊
Canadian Journal of Animal Science
Canadian Journal of Animal Science 农林科学-奶制品与动物科学
CiteScore
2.30
自引率
0.00%
发文量
51
审稿时长
6 months
期刊介绍: Published since 1957, this quarterly journal contains new research on all aspects of animal agriculture and animal products, including breeding and genetics; cellular and molecular biology; growth and development; meat science; modelling animal systems; physiology and endocrinology; ruminant nutrition; non-ruminant nutrition; and welfare, behaviour, and management. It also publishes reviews, letters to the editor, abstracts of technical papers presented at the annual meeting of the Canadian Society of Animal Science, and occasionally conference proceedings.
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