DEPENDENCE OF THE CARBON-ISOTOPE CONTENTS OF BREATH CARBON-DIOXIDE, MILK, SERUM AND RUMEN FERMENTATION PRODUCTS ON THE DELTA-C-13 VALUE OF FOOD IN DAIRY-COWS

被引：115

作者：

METGES, C ^{[1
]}

KEMPE, K ^{[1
]}

SCHMIDT, HL ^{[1
]}

机构：

[1] TECH UNIV MUNICH,LEHRSTUHL ALLGEMEINE CHEM & BIOCHEM,W-8050 FREISING,GERMANY

来源：

BRITISH JOURNAL OF NUTRITION | 1990年 / 63卷 / 02期

关键词：

D O I：

10.1079/BJN19900106

中图分类号：

R15 [营养卫生、食品卫生]; TS201 [基础科学];

学科分类号：

100403 ;

摘要：

Six dairy cows of two breeds were fed during three alternating periods with products from C3 and C4-plants to yield different natural 13C enrichments of the diet (δ13C range: —28·0 to -13·7%0). The resulting changes in the 13C enrichment of breath carbon dioxide, serum and milk of the animals followed the 13C:12C of the food, in agreement with the individual biological half-lives of those products, and established isotope discriminations. Breath CO2 was more enriched in 13C than expected. This could be related to isotope discriminations during rumen fermentation. From these results an isotopic balance model for the breath CO2 could be established. © 1990, The Nutrition Society. All rights reserved.

引用

页码：187 / 196

页数：10

共 26 条

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