玉米青贮和大麦籽粒型肉牛口粮中增加菜籽油和大豆油添加量对体外瘤胃产气量和瘤胃发酵的影响

IF 1.1 4区 农林科学 Q3 AGRICULTURE, MULTIDISCIPLINARY
Kanber Kara, Kurşat Yılmaz, Sena Yılmaz, Gönül Pirci
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引用次数: 0

摘要

本试验旨在研究以玉米青贮和大麦谷物为基础的肉牛总混合日粮中添加不同比例(4、8和12%)的菜籽油或大豆油对瘤胃发酵参数的影响。在TMR中添加4%大豆油对体外产气量、净能泌乳(NEL)、代谢能(ME)和有机物消化(OMd)有积极影响。在TMR中添加8%和12%的大豆油可线性降低ME、NEL和OMd (p < 0.05)。在TMR中添加4,8和12%菜籽油线性降低了体外产气量和估计发酵值(ME、NEL和OMd) (p < 0.05)。TMR中所有剂量的大豆油或菜籽油均降低了体外发酵液中总短链脂肪酸(tSFCA)、乙酸(AA)、丁酸(BA)、丙酸(PA)、戊酸(VA)、异戊酸(IVA)和异丁酸(IBA)的摩尔浓度(p < 0.05)。饲粮硬脂酸、油酸和亚油酸的增加与体外瘤胃发酵终产物呈负相关。然而,增加饲粮α-亚麻酸对体外瘤胃发酵终产物无不良影响。结果表明,添加4%大豆油(α-亚麻酸和饱和脂肪酸含量高于菜籽油,油酸和亚油酸含量低于菜籽油)对TMR体外瘤胃发酵有积极影响。此外,菜籽油或大豆油添加量≥8%对体外发酵值有不利影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
The effect of increasing canola oil and soybean oil addition to beef cattle rations based on corn silage and barley grain on the in vitro ruminal gas production and rumen fermentation

The purpose of the current experiment was to determine the effects of ruminal fermentation parameters of the additions of canola or soybean oils at different rates (4, 8 and 12%) to beef cattle total mix rations (TMR), based on corn silage and barley grain. The addition of 4% soybean oil to TMR positively affected in vitro gas production, net energy lactation (NEL), metabolic energy (ME), and organic matter digestion (OMd). The additions of 8% and 12% of soybean oil to TMR linearly decreased ME, NEL and OMd (p < 0.05). The additions of 4, 8 and 12% canola oil to the TMR linearly decreased the in vitro gas production and estimated fermentation values (ME, NEL and OMd) (p < 0.05). All doses of soybean or canola oils in TMR reduced the molarities of total short-chain fatty acids (tSFCA), acetic (AA), butyric (BA), propionic (PA), valeric (VA), iso-valeric (IVA) and iso-butyric acids (IBA) for in vitro fermentation fluid (p < 0.05). There was a negative correlation between the increasing dietary stearic, oleic and linoleic acid and the end-products of in vitro rumen fermentation. However, increasing dietary α-linolenic acids had no adverse effect on in vitro ruminal fermentation end-products. As a result, 4% addition of the soybean oil, which included a higher rate of α-linolenic acid and saturated fatty acids and a lower rate of oleic, linoleic acids according to those of canola oil, to the TMR positively affected in vitro ruminal fermentation. In addition, the ≥8% addition of canola or soybean oil adversely affected the in vitro fermentation values.

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来源期刊
Grassland Science
Grassland Science Agricultural and Biological Sciences-Agronomy and Crop Science
CiteScore
2.70
自引率
7.70%
发文量
38
审稿时长
>12 weeks
期刊介绍: Grassland Science is the official English language journal of the Japanese Society of Grassland Science. It publishes original research papers, review articles and short reports in all aspects of grassland science, with an aim of presenting and sharing knowledge, ideas and philosophies on better management and use of grasslands, forage crops and turf plants for both agricultural and non-agricultural purposes across the world. Contributions from anyone, non-members as well as members, are welcome in any of the following fields: grassland environment, landscape, ecology and systems analysis; pasture and lawn establishment, management and cultivation; grassland utilization, animal management, behavior, nutrition and production; forage conservation, processing, storage, utilization and nutritive value; physiology, morphology, pathology and entomology of plants; breeding and genetics; physicochemical property of soil, soil animals and microorganisms and plant nutrition; economics in grassland systems.
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