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[牛真胃移位:日粮对瘤胃液成分以及真胃和十二指肠内容物成分的影响(作者译)]

[Displacement of the bovine abomasum: effect of the diet on the composition of the rumen fluid and that of the contents of the abomasum and duodenum (author's transl)].

作者信息

Breukink H J, de Ruyter T

出版信息

Tijdschr Diergeneeskd. 1977 May 1;102(9):554-66.

PMID:871016
Abstract

High-concentrate diets apparently inhibit abomasal motility by increasing the amount of volatile fatty acids (VFFA) which enter the abomasum. This report is concerned with a study of cows fitted with ruminal, abomasal and duodenal cannulae after feeding hay ad lib. and a diet consisting of hay and concentrates. Ruminal, abomasal and duodenal samples were analyzed before and after feeding. It was shown that a considerable increase in ruminal VFFA concentrations was not followed by a subsequent increase in abomasal VFFA concentrations. Differences in abomasal VFFA levels between the two rations were not observed. The VFFA concentrations in the duodenal fluid continued to be low and did not attain levels capable of affecting abomasal motility. The changes in pH level and in the sodium, potassium and chloride concentrations after feeding were also recorded. There were significant differences in the electrolyte concentrations of the ruminal, abomasal and duodenal contents between the rations before and after feeding. Part of these differences could be accounted for by findings reported in the literature.

摘要

高浓度日粮显然会通过增加进入皱胃的挥发性脂肪酸(VFFA)量来抑制皱胃运动。本报告涉及一项对装有瘤胃、皱胃和十二指肠瘘管的奶牛的研究,这些奶牛自由采食干草以及由干草和精饲料组成的日粮。在喂食前后对瘤胃、皱胃和十二指肠样本进行了分析。结果表明,瘤胃VFFA浓度大幅增加后,皱胃VFFA浓度并未随之增加。未观察到两种日粮之间皱胃VFFA水平的差异。十二指肠液中的VFFA浓度持续较低,未达到能够影响皱胃运动的水平。还记录了喂食后pH值以及钠、钾和氯浓度的变化。日粮喂食前后,瘤胃、皱胃和十二指肠内容物的电解质浓度存在显著差异。这些差异部分可以用文献报道的研究结果来解释。

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