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A ring test of a wireless in vitro gas production system

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A ring test of a wireless in vitro gas production system. / Cornou, Cecile; Storm, Ida Marie Lindhardt Drejer; Hindrichsen, Ida Katarina Auf der M. ; Worgan, Hilary; Bakewell, Eleanor; Ruiz, David R. Yáñez; Abecia, Leticia; Tagliapietra, Franco; Cattani, Mirko; Ritz, Christian; Hansen, Hanne Helene.

I: Animal Production Science, Bind 53, Nr. 6, 2013, s. 585-592.

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningfagfællebedømt

Harvard

Cornou, C, Storm, IMLD, Hindrichsen, IKADM, Worgan, H, Bakewell, E, Ruiz, DRY, Abecia, L, Tagliapietra, F, Cattani, M, Ritz, C & Hansen, HH 2013, 'A ring test of a wireless in vitro gas production system', Animal Production Science, bind 53, nr. 6, s. 585-592. https://doi.org/10.1071/AN12091

APA

Cornou, C., Storm, I. M. L. D., Hindrichsen, I. K. A. D. M., Worgan, H., Bakewell, E., Ruiz, D. R. Y., ... Hansen, H. H. (2013). A ring test of a wireless in vitro gas production system. Animal Production Science, 53(6), 585-592. https://doi.org/10.1071/AN12091

Vancouver

Cornou C, Storm IMLD, Hindrichsen IKADM, Worgan H, Bakewell E, Ruiz DRY o.a. A ring test of a wireless in vitro gas production system. Animal Production Science. 2013;53(6):585-592. https://doi.org/10.1071/AN12091

Author

Cornou, Cecile ; Storm, Ida Marie Lindhardt Drejer ; Hindrichsen, Ida Katarina Auf der M. ; Worgan, Hilary ; Bakewell, Eleanor ; Ruiz, David R. Yáñez ; Abecia, Leticia ; Tagliapietra, Franco ; Cattani, Mirko ; Ritz, Christian ; Hansen, Hanne Helene. / A ring test of a wireless in vitro gas production system. I: Animal Production Science. 2013 ; Bind 53, Nr. 6. s. 585-592.

Bibtex

@article{9c9fd77639b744ca918fbba968008706,
title = "A ring test of a wireless in vitro gas production system",
abstract = "The in vitro gas production (GP) technique has been widely used for feed evaluation. However, variability in results limits useful comparisons. Results from a ring test undertaken in four laboratories (Italy - IT, Spain - SP, Wales - WA and Denmark - DK) using the same wireless equipment (ANKOM Technology), same substrates and same laboratory protocol are presented, including calculation of repeatability and reproducibility according to ISO 5725-2. Hay, maize starch and straw samples and units without sample (blanks) were incubated in five repetitions using rumen inoculum from cows (DK, IT and WA) or sheep (SP). Curves, corrected for blanks, were fitted using an exponential regression model with a lag time. The following variables were considered: (i) GP24 and GP48: raw values at 24 and 48 h (mL/g DM), corrected for blanks; (ii) A: asymptotic GP (mL/g DM); (iii) T1/2: time when half A is produced (h); (iv) GPMR: maximum predicted GP rate (mL/h); (v) L: lag time (h). A mixed model including laboratories as random effect was used. A significant interaction between substrate and laboratories was found for all variables except A. The most repeatable and reproducible results were observed for A and GP48. The results from this ring test suggest the need for more standardisation, particularly in the procedures that occur outside the laboratory.",
author = "Cecile Cornou and Storm, {Ida Marie Lindhardt Drejer} and Hindrichsen, {Ida Katarina Auf der M.} and Hilary Worgan and Eleanor Bakewell and Ruiz, {David R. Y{\'a}{\~n}ez} and Leticia Abecia and Franco Tagliapietra and Mirko Cattani and Christian Ritz and Hansen, {Hanne Helene}",
year = "2013",
doi = "10.1071/AN12091",
language = "English",
volume = "53",
pages = "585--592",
journal = "Animal Production Science",
issn = "1836-0939",
publisher = "C S I R O Publishing",
number = "6",

}

RIS

TY - JOUR

T1 - A ring test of a wireless in vitro gas production system

AU - Cornou, Cecile

AU - Storm, Ida Marie Lindhardt Drejer

AU - Hindrichsen, Ida Katarina Auf der M.

AU - Worgan, Hilary

AU - Bakewell, Eleanor

AU - Ruiz, David R. Yáñez

AU - Abecia, Leticia

AU - Tagliapietra, Franco

AU - Cattani, Mirko

AU - Ritz, Christian

AU - Hansen, Hanne Helene

PY - 2013

Y1 - 2013

N2 - The in vitro gas production (GP) technique has been widely used for feed evaluation. However, variability in results limits useful comparisons. Results from a ring test undertaken in four laboratories (Italy - IT, Spain - SP, Wales - WA and Denmark - DK) using the same wireless equipment (ANKOM Technology), same substrates and same laboratory protocol are presented, including calculation of repeatability and reproducibility according to ISO 5725-2. Hay, maize starch and straw samples and units without sample (blanks) were incubated in five repetitions using rumen inoculum from cows (DK, IT and WA) or sheep (SP). Curves, corrected for blanks, were fitted using an exponential regression model with a lag time. The following variables were considered: (i) GP24 and GP48: raw values at 24 and 48 h (mL/g DM), corrected for blanks; (ii) A: asymptotic GP (mL/g DM); (iii) T1/2: time when half A is produced (h); (iv) GPMR: maximum predicted GP rate (mL/h); (v) L: lag time (h). A mixed model including laboratories as random effect was used. A significant interaction between substrate and laboratories was found for all variables except A. The most repeatable and reproducible results were observed for A and GP48. The results from this ring test suggest the need for more standardisation, particularly in the procedures that occur outside the laboratory.

AB - The in vitro gas production (GP) technique has been widely used for feed evaluation. However, variability in results limits useful comparisons. Results from a ring test undertaken in four laboratories (Italy - IT, Spain - SP, Wales - WA and Denmark - DK) using the same wireless equipment (ANKOM Technology), same substrates and same laboratory protocol are presented, including calculation of repeatability and reproducibility according to ISO 5725-2. Hay, maize starch and straw samples and units without sample (blanks) were incubated in five repetitions using rumen inoculum from cows (DK, IT and WA) or sheep (SP). Curves, corrected for blanks, were fitted using an exponential regression model with a lag time. The following variables were considered: (i) GP24 and GP48: raw values at 24 and 48 h (mL/g DM), corrected for blanks; (ii) A: asymptotic GP (mL/g DM); (iii) T1/2: time when half A is produced (h); (iv) GPMR: maximum predicted GP rate (mL/h); (v) L: lag time (h). A mixed model including laboratories as random effect was used. A significant interaction between substrate and laboratories was found for all variables except A. The most repeatable and reproducible results were observed for A and GP48. The results from this ring test suggest the need for more standardisation, particularly in the procedures that occur outside the laboratory.

UR - http://www.scopus.com/inward/record.url?scp=84877723830&partnerID=8YFLogxK

U2 - 10.1071/AN12091

DO - 10.1071/AN12091

M3 - Journal article

AN - SCOPUS:84877723830

VL - 53

SP - 585

EP - 592

JO - Animal Production Science

JF - Animal Production Science

SN - 1836-0939

IS - 6

ER -

ID: 45859805