Estimates for rumen dry matter degradation of concentrates are higher, but not consistently, when evaluated based on in sacco as compared to in vitro methods

Publikation: Bidrag til bog/antologi/rapport › Konferencebidrag i proceedings › Forskning › fagfællebedømt

Standard

Estimates for rumen dry matter degradation of concentrates are higher, but not consistently, when evaluated based on in sacco as compared to in vitro methods. / Sembach, Lasse Emil; Hansen, Hanne Helene; Dhakal, Rajan; Eriksson, T.; Nielsen, N.I.; Nielsen, Mette Olaf.

Proceedings of the 10th Nordic Feed Science Conference. Swedish University of Agricultural Sciences, 2019. s. 123-128 (Sveriges Lantbruksuniversitet. Institutionen foer Husdjurens Utfordring och Vaard. Rapport; Nr. 302).

Publikation: Bidrag til bog/antologi/rapport › Konferencebidrag i proceedings › Forskning › fagfællebedømt

Harvard

Sembach, LE, Hansen, HH, Dhakal, R, Eriksson, T, Nielsen, NI & Nielsen, MO 2019, Estimates for rumen dry matter degradation of concentrates are higher, but not consistently, when evaluated based on in sacco as compared to in vitro methods. i Proceedings of the 10th Nordic Feed Science Conference. Swedish University of Agricultural Sciences, Sveriges Lantbruksuniversitet. Institutionen foer Husdjurens Utfordring och Vaard. Rapport, nr. 302, s. 123-128.

APA

Sembach, L. E., Hansen, H. H., Dhakal, R., Eriksson, T., Nielsen, N. I., & Nielsen, M. O. (2019). Estimates for rumen dry matter degradation of concentrates are higher, but not consistently, when evaluated based on in sacco as compared to in vitro methods. I Proceedings of the 10th Nordic Feed Science Conference (s. 123-128). Swedish University of Agricultural Sciences. Sveriges Lantbruksuniversitet. Institutionen foer Husdjurens Utfordring och Vaard. Rapport Nr. 302

Vancouver

Sembach LE, Hansen HH, Dhakal R, Eriksson T, Nielsen NI, Nielsen MO. Estimates for rumen dry matter degradation of concentrates are higher, but not consistently, when evaluated based on in sacco as compared to in vitro methods. I Proceedings of the 10th Nordic Feed Science Conference. Swedish University of Agricultural Sciences. 2019. s. 123-128. (Sveriges Lantbruksuniversitet. Institutionen foer Husdjurens Utfordring och Vaard. Rapport; Nr. 302).

Author

Sembach, Lasse Emil ; Hansen, Hanne Helene ; Dhakal, Rajan ; Eriksson, T. ; Nielsen, N.I. ; Nielsen, Mette Olaf. / Estimates for rumen dry matter degradation of concentrates are higher, but not consistently, when evaluated based on in sacco as compared to in vitro methods. Proceedings of the 10th Nordic Feed Science Conference. Swedish University of Agricultural Sciences, 2019. s. 123-128 (Sveriges Lantbruksuniversitet. Institutionen foer Husdjurens Utfordring och Vaard. Rapport; Nr. 302).

Bibtex

@inproceedings{737e7970b5674f31ade30a8d5db2f961,
title = "Estimates for rumen dry matter degradation of concentrates are higher, but not consistently, when evaluated based on in sacco as compared to in vitro methods",
abstract = "NorFor – the Nordic feed evaluation system - currently bases estimates of ruminal crudeprotein and NDF degradation on data from the in sacco nylon bag technique. Thesedegradation profiles are fitted to an exponential model with an intercept as proposed by{\O}rskov and McDonald (1979), where the intercept represents the soluble part of the substrate,while the asymptote is the potentially degradable part ({\AA}kerlind et al., 2011). The in vitro gasproduction technique (IVGPT) is a method used to estimate fermentation kinetics of feeds, byincubating the feeds in buffered rumen fluid and measuring the gas produced over time(Theodorou et al., 1994). Cumulative gas production profiles have been related to dry matter(DM) degradation, by assuming a potentially degradable pool equal to the amount ofsubstrate degraded at the end-point of the fermentation and a constant yield factor of gas todegraded substrate (Dhanoa et al., 2000). The aim of this study was to examine whether DMdegradation estimated from mathematical models fitted to degradation profiles ofconcentrates obtained through the in sacco technique correspond to estimates by the rapidand less costly IVGPT.",
author = "Sembach, {Lasse Emil} and Hansen, {Hanne Helene} and Rajan Dhakal and T. Eriksson and N.I. Nielsen and Nielsen, {Mette Olaf}",
year = "2019",
language = "English",
series = "Sveriges Lantbruksuniversitet. Institutionen foer Husdjurens Utfordring och Vaard. Rapport",
number = "302",
pages = "123--128",
booktitle = "Proceedings of the 10th Nordic Feed Science Conference",
publisher = "Swedish University of Agricultural Sciences",
address = "Sweden",

}

RIS

TY - GEN

T1 - Estimates for rumen dry matter degradation of concentrates are higher, but not consistently, when evaluated based on in sacco as compared to in vitro methods

AU - Sembach, Lasse Emil

AU - Hansen, Hanne Helene

AU - Dhakal, Rajan

AU - Eriksson, T.

AU - Nielsen, N.I.

AU - Nielsen, Mette Olaf

PY - 2019

Y1 - 2019

N2 - NorFor – the Nordic feed evaluation system - currently bases estimates of ruminal crudeprotein and NDF degradation on data from the in sacco nylon bag technique. Thesedegradation profiles are fitted to an exponential model with an intercept as proposed byØrskov and McDonald (1979), where the intercept represents the soluble part of the substrate,while the asymptote is the potentially degradable part (Åkerlind et al., 2011). The in vitro gasproduction technique (IVGPT) is a method used to estimate fermentation kinetics of feeds, byincubating the feeds in buffered rumen fluid and measuring the gas produced over time(Theodorou et al., 1994). Cumulative gas production profiles have been related to dry matter(DM) degradation, by assuming a potentially degradable pool equal to the amount ofsubstrate degraded at the end-point of the fermentation and a constant yield factor of gas todegraded substrate (Dhanoa et al., 2000). The aim of this study was to examine whether DMdegradation estimated from mathematical models fitted to degradation profiles ofconcentrates obtained through the in sacco technique correspond to estimates by the rapidand less costly IVGPT.

AB - NorFor – the Nordic feed evaluation system - currently bases estimates of ruminal crudeprotein and NDF degradation on data from the in sacco nylon bag technique. Thesedegradation profiles are fitted to an exponential model with an intercept as proposed byØrskov and McDonald (1979), where the intercept represents the soluble part of the substrate,while the asymptote is the potentially degradable part (Åkerlind et al., 2011). The in vitro gasproduction technique (IVGPT) is a method used to estimate fermentation kinetics of feeds, byincubating the feeds in buffered rumen fluid and measuring the gas produced over time(Theodorou et al., 1994). Cumulative gas production profiles have been related to dry matter(DM) degradation, by assuming a potentially degradable pool equal to the amount ofsubstrate degraded at the end-point of the fermentation and a constant yield factor of gas todegraded substrate (Dhanoa et al., 2000). The aim of this study was to examine whether DMdegradation estimated from mathematical models fitted to degradation profiles ofconcentrates obtained through the in sacco technique correspond to estimates by the rapidand less costly IVGPT.

M3 - Article in proceedings

T3 - Sveriges Lantbruksuniversitet. Institutionen foer Husdjurens Utfordring och Vaard. Rapport

SP - 123

EP - 128

BT - Proceedings of the 10th Nordic Feed Science Conference

PB - Swedish University of Agricultural Sciences

ER -

ID: 228781881