Passage kinetics of internal and external markers in lactating dairy cows

S. Ahvenjärvi; A. Vanhatalo; A. N. Hristov; P. Huhtanen

doi:10.22358/jafs/70750/2004

Passage kinetics of internal and external markers in lactating dairy cows

S. Ahvenjärvi
, A. Vanhatalo
, A. N. Hristov
, P. Huhtanen

Animal Science

Research output: Contribution to journal › Article › peer-review

10 Scopus citations

Abstract

Particle passage kinetics in dairy cows was assessed using acid detergent fibre (ADF) associated ¹⁵N as an internal marker and chromium (Cr) mordanted grass silage, ytterbium (Yb) labelled grass silage and dysprosium (Dy) labelled faecal particles as external markers. Kinetic parameters were estimated using two-compartment models assuming gamma time-dependent (G3) passage rate in the first compartment and age-independent (G3) in the second compartment. Parameter estimates were consistent between ADF-¹⁵N and Cr, but for Yb and Dy the total mean retention time and retention time in the age-independent compartment was shorter.

Original language	English (US)
Pages (from-to)	19-22
Number of pages	4
Journal	Journal of Animal and Feed Sciences
Volume	13
Issue number	SUPPL. 1
DOIs	https://doi.org/10.22358/jafs/70750/2004
State	Published - 2004

All Science Journal Classification (ASJC) codes

Food Science
Animal Science and Zoology

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10.22358/jafs/70750/2004

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title = "Passage kinetics of internal and external markers in lactating dairy cows",

abstract = "Particle passage kinetics in dairy cows was assessed using acid detergent fibre (ADF) associated 15N as an internal marker and chromium (Cr) mordanted grass silage, ytterbium (Yb) labelled grass silage and dysprosium (Dy) labelled faecal particles as external markers. Kinetic parameters were estimated using two-compartment models assuming gamma time-dependent (G3) passage rate in the first compartment and age-independent (G3) in the second compartment. Parameter estimates were consistent between ADF-15N and Cr, but for Yb and Dy the total mean retention time and retention time in the age-independent compartment was shorter.",

author = "S. Ahvenj{\"a}rvi and A. Vanhatalo and Hristov, \{A. N.\} and P. Huhtanen",

year = "2004",

doi = "10.22358/jafs/70750/2004",

language = "English (US)",

volume = "13",

pages = "19--22",

journal = "Journal of Animal and Feed Sciences",

issn = "1230-1388",

publisher = "Kielanowski Institute of Animal Physiology and Nutrition, Polish Academy of Science",

number = "SUPPL. 1",

}

TY - JOUR

T1 - Passage kinetics of internal and external markers in lactating dairy cows

AU - Ahvenjärvi, S.

AU - Vanhatalo, A.

AU - Hristov, A. N.

AU - Huhtanen, P.

PY - 2004

Y1 - 2004

N2 - Particle passage kinetics in dairy cows was assessed using acid detergent fibre (ADF) associated 15N as an internal marker and chromium (Cr) mordanted grass silage, ytterbium (Yb) labelled grass silage and dysprosium (Dy) labelled faecal particles as external markers. Kinetic parameters were estimated using two-compartment models assuming gamma time-dependent (G3) passage rate in the first compartment and age-independent (G3) in the second compartment. Parameter estimates were consistent between ADF-15N and Cr, but for Yb and Dy the total mean retention time and retention time in the age-independent compartment was shorter.

AB - Particle passage kinetics in dairy cows was assessed using acid detergent fibre (ADF) associated 15N as an internal marker and chromium (Cr) mordanted grass silage, ytterbium (Yb) labelled grass silage and dysprosium (Dy) labelled faecal particles as external markers. Kinetic parameters were estimated using two-compartment models assuming gamma time-dependent (G3) passage rate in the first compartment and age-independent (G3) in the second compartment. Parameter estimates were consistent between ADF-15N and Cr, but for Yb and Dy the total mean retention time and retention time in the age-independent compartment was shorter.

UR - https://www.scopus.com/pages/publications/6944242985

UR - https://www.scopus.com/pages/publications/6944242985#tab=citedBy

U2 - 10.22358/jafs/70750/2004

DO - 10.22358/jafs/70750/2004

M3 - Article

AN - SCOPUS:6944242985

SN - 1230-1388

VL - 13

SP - 19

EP - 22

JO - Journal of Animal and Feed Sciences

JF - Journal of Animal and Feed Sciences

IS - SUPPL. 1

ER -

Passage kinetics of internal and external markers in lactating dairy cows

Abstract

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