The occurrence of isoflavones in dairy feedstuffs and assessment of their transfer into milk

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

The occurrence of isoflavones in dairy feedstuffs and assessment of their transfer into milk

Popis výsledku v původním jazyce

The aim of the study was to determine the intake of isoflavones from commonly used dairy diets ant to quantify the transfer of the isoflavones from feed into the bovine milk under on-farm conditions. The study was performed on individual milk samples collected from four dairy farms breeding Holstein (Farm 1 and 2) and Czech Fleckvieh x Holstein cows (Farm 3 and 4). Milk samples were taken from five average yielding cows per herd and were analysed on the content of basic constituents and isoflavones. Samples of feedstuffs were taken at the same time as milk samples and were analysed on the content of dry matter (DM) and isoflavones. In all farms feeding mixtures were identified as the only source of isoflavones in the diets with concentration of total isoflavones ranging between 143.1 and 986.7 mg/kg of DM resulting in total isoflavones intake from 1071 to 8393 mg/d. Daidzein, genistein, glycitein and metabolite equol were detected in milk of all farms. The total carry-over rate of isoflavones from feed into the milk ranged from 0.3 ?g/mg (Farm 4) to 3.6 ?g/mg (Farm1).

Název v anglickém jazyce

The occurrence of isoflavones in dairy feedstuffs and assessment of their transfer into milk

Popis výsledku anglicky

The aim of the study was to determine the intake of isoflavones from commonly used dairy diets ant to quantify the transfer of the isoflavones from feed into the bovine milk under on-farm conditions. The study was performed on individual milk samples collected from four dairy farms breeding Holstein (Farm 1 and 2) and Czech Fleckvieh x Holstein cows (Farm 3 and 4). Milk samples were taken from five average yielding cows per herd and were analysed on the content of basic constituents and isoflavones. Samples of feedstuffs were taken at the same time as milk samples and were analysed on the content of dry matter (DM) and isoflavones. In all farms feeding mixtures were identified as the only source of isoflavones in the diets with concentration of total isoflavones ranging between 143.1 and 986.7 mg/kg of DM resulting in total isoflavones intake from 1071 to 8393 mg/d. Daidzein, genistein, glycitein and metabolite equol were detected in milk of all farms. The total carry-over rate of isoflavones from feed into the milk ranged from 0.3 ?g/mg (Farm 4) to 3.6 ?g/mg (Farm1).

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

40201 - Animal and dairy science; (Animal biotechnology to be 4.4)

Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

NutriNET 2017 - International Animal Nutrition PhD Conference

ISBN

978-80-7394-642-5

ISSN

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e-ISSN

neuvedeno

Počet stran výsledku

7

Strana od-do

59-65

Název nakladatele

Jihočeská univerzita v Českých Budějovicích

Místo vydání

České Budějovice

Místo konání akce

České Budějovice

Datum konání akce

13. 9. 2017

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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