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首页> 外文期刊>Journal of Animal and Feed Sciences >Effect of diets with fruit oils supplements on rumen fermentation parameters, fatty acid composition and methane production in vitro.
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Effect of diets with fruit oils supplements on rumen fermentation parameters, fatty acid composition and methane production in vitro.

机译：日粮中添加果油对瘤胃发酵参数，脂肪酸组成和甲烷产量的影响。

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摘要

Effects of diets supplemented with fruit seed oils on fermentation parameters, ciliated protozoan population, and fatty acid composition of the rumen fluid of dairy cows were studied in 24 h batch cultures. Two diets, one containing lucerne plus wheat meal (60:40%) and the other containing of meadow hay plus wheat meal (60:40%), were supplemented with either grape oil or black currant oil (50 g.kg-1 of dry matter). The control diet contained no oil supplementation. The oils were selected due to high content of linoleic acid (grape oil, 696 g.kg-1 of fatty acids; black currant oil, 586 g.kg-1 of fatty acids). Oil supplements did not affect the basal parameters of rumen fermentation. Interactions between the diets and oil supplements affected rumen methane production and either the total or the majority of rumen ciliate species examined. Although the diets had no effect on the total content of volatile fatty acids, the proportions of n-butyrate and iso-valerate were significantly affected. The concentration of polyunsaturated fatty acids was higher in the meadow hay diet than in the lucerne diet, whereas addition of oils increased polyunsaturated fatty acids content. Black currant oil supplementation proved to be more efficient in enhancing polyunsaturated fatty acids content in rumen fluid when compared to grape oil. In conclusion, both oil supplements considerably decreased methane production when lucerne was used as the diet, what could be the effect of detrimental influence of the type of diet and oil supplement on protozoa population. However, the supplements did not negatively affect other rumen parameters, hence may be considered as valuable supplements in ruminant nutrition.
机译：在24小时分批培养中，研究了添加果籽油的饮食对奶牛发酵参数，纤毛虫原生动物种群和瘤胃液脂肪酸组成的影响。两种饮食都补充了葡萄油或黑加仑子油（50克。补充），其中一种饮食含卢塞恩加小麦粉（60：40％），另一种饮食含草地干草加小麦粉（60：40％） -1 的干物质）。对照饮食不含油补充剂。选择这些油是因为亚油酸含量高（葡萄油中，脂肪酸696 g.kg -1 ;黑加仑子油中的586 g.kg -1 ）。脂肪酸）。补油不会影响瘤胃发酵的基本参数。日粮和油脂补充剂之间的相互作用会影响瘤胃甲烷的产生以及瘤胃纤毛虫种类的总数或大部分。尽管饮食对挥发性脂肪酸的总含量没有影响，但是正丁酸和异戊酸的比例受到显着影响。草甸干草饮食中的多不饱和脂肪酸浓度高于卢塞恩饮食，而添加油则增加了多不饱和脂肪酸含量。与葡萄油相比，补充黑加仑油被证明在提高瘤胃液中多不饱和脂肪酸含量方面更有效。总之，当使用卢塞恩作为日粮时，两种油脂补充剂均会显着降低甲烷的产生，这可能是日粮类型和油脂补充剂对原生动物种群的有害影响。但是，这些补充剂不会对其他瘤胃参数产生负面影响，因此可以认为是反刍动物营养中有价值的补充剂。

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