A new nordic structure evaluation system for diets fed to dairy cows

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

Standard

A new nordic structure evaluation system for diets fed to dairy cows. / Nørgaard, Peder; Nadeau, E.; Volden, H.; Randby, Å.; Aaes, O.; Mehlqvist, M.

Biodiversity and animal feed: future challenges for grassland production. red. / A. Hopkins; T. Gustafsson; J. Bertilsson; G. Dalin; N. Nilsdotter-Linde; E. Spörndly. Sveriges Lantbruksuniversitet (SLU), 2008. s. 762-764 (Grassland Science in Europe, Bind 13).

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

Harvard

Nørgaard, P, Nadeau, E, Volden, H, Randby, Å, Aaes, O & Mehlqvist, M 2008, A new nordic structure evaluation system for diets fed to dairy cows. i A Hopkins, T Gustafsson, J Bertilsson, G Dalin, N Nilsdotter-Linde & E Spörndly (red), Biodiversity and animal feed: future challenges for grassland production. Sveriges Lantbruksuniversitet (SLU), Grassland Science in Europe, bind 13, s. 762-764, EGF General Meeting, Uppsala, Sverige, 09/06/2008.

APA

Nørgaard, P., Nadeau, E., Volden, H., Randby, Å., Aaes, O., & Mehlqvist, M. (2008). A new nordic structure evaluation system for diets fed to dairy cows. I A. Hopkins, T. Gustafsson, J. Bertilsson, G. Dalin, N. Nilsdotter-Linde, & E. Spörndly (red.), Biodiversity and animal feed: future challenges for grassland production (s. 762-764). Sveriges Lantbruksuniversitet (SLU). Grassland Science in Europe Bind 13

Vancouver

Nørgaard P, Nadeau E, Volden H, Randby Å, Aaes O, Mehlqvist M. A new nordic structure evaluation system for diets fed to dairy cows. I Hopkins A, Gustafsson T, Bertilsson J, Dalin G, Nilsdotter-Linde N, Spörndly E, red., Biodiversity and animal feed: future challenges for grassland production. Sveriges Lantbruksuniversitet (SLU). 2008. s. 762-764. (Grassland Science in Europe, Bind 13).

Author

Nørgaard, Peder ; Nadeau, E. ; Volden, H. ; Randby, Å. ; Aaes, O. ; Mehlqvist, M. / A new nordic structure evaluation system for diets fed to dairy cows. Biodiversity and animal feed: future challenges for grassland production. red. / A. Hopkins ; T. Gustafsson ; J. Bertilsson ; G. Dalin ; N. Nilsdotter-Linde ; E. Spörndly. Sveriges Lantbruksuniversitet (SLU), 2008. s. 762-764 (Grassland Science in Europe, Bind 13).

Bibtex

@inproceedings{aa192d70b61811ddae57000ea68e967b,
title = "A new nordic structure evaluation system for diets fed to dairy cows",
abstract = "The objective of the Norfor structure system was to establish a model for prediction of eating- (EI), ruminating- (RI) and total chewing index (CI) for feeds and total rations fed to dairy cows. The model was predicted from a Meta analysis of more than 100 published experiments including results on eating, ruminating and total chewing time by cattle fed mainly high forage diets. The EI is proportional with the neutral detergent fibre (NDF) content and a particle size factor (Size_E) of the feed. The RI is proportional with the NDF content, a particle size factor (Size_R) and a hardness factor of the feed. The CI is estimated as the sum of the EI and RI. The Size_E and Size_R values are estimated from exponential functions of the most frequent particle length. The hardness factor is estimated as a linear function of the proportion of indigestible NDF in NDF. A minimum dietary CI value of 32 minutes per kg of total DMI is considered to ensure a sufficient intake of physically effective fibre in order to ensure good ruminal fibre digestion and to prevent a low rumen pH, digestive disorders and a low milk fat content in high-yielding dairy cows.",
author = "Peder N{\o}rgaard and E. Nadeau and H. Volden and {\AA}. Randby and O. Aaes and M. Mehlqvist",
year = "2008",
language = "English",
series = "Grassland Science in Europe",
publisher = "Sveriges Lantbruksuniversitet (SLU)",
pages = "762--764",
editor = "A. Hopkins and T. Gustafsson and J. Bertilsson and G. Dalin and N. Nilsdotter-Linde and E. Sp{\"o}rndly",
booktitle = "Biodiversity and animal feed",
note = "null ; Conference date: 09-06-2008 Through 11-06-2008",

}

RIS

TY - GEN

T1 - A new nordic structure evaluation system for diets fed to dairy cows

AU - Nørgaard, Peder

AU - Nadeau, E.

AU - Volden, H.

AU - Randby, Å.

AU - Aaes, O.

AU - Mehlqvist, M.

N1 - Conference code: 22

PY - 2008

Y1 - 2008

N2 - The objective of the Norfor structure system was to establish a model for prediction of eating- (EI), ruminating- (RI) and total chewing index (CI) for feeds and total rations fed to dairy cows. The model was predicted from a Meta analysis of more than 100 published experiments including results on eating, ruminating and total chewing time by cattle fed mainly high forage diets. The EI is proportional with the neutral detergent fibre (NDF) content and a particle size factor (Size_E) of the feed. The RI is proportional with the NDF content, a particle size factor (Size_R) and a hardness factor of the feed. The CI is estimated as the sum of the EI and RI. The Size_E and Size_R values are estimated from exponential functions of the most frequent particle length. The hardness factor is estimated as a linear function of the proportion of indigestible NDF in NDF. A minimum dietary CI value of 32 minutes per kg of total DMI is considered to ensure a sufficient intake of physically effective fibre in order to ensure good ruminal fibre digestion and to prevent a low rumen pH, digestive disorders and a low milk fat content in high-yielding dairy cows.

AB - The objective of the Norfor structure system was to establish a model for prediction of eating- (EI), ruminating- (RI) and total chewing index (CI) for feeds and total rations fed to dairy cows. The model was predicted from a Meta analysis of more than 100 published experiments including results on eating, ruminating and total chewing time by cattle fed mainly high forage diets. The EI is proportional with the neutral detergent fibre (NDF) content and a particle size factor (Size_E) of the feed. The RI is proportional with the NDF content, a particle size factor (Size_R) and a hardness factor of the feed. The CI is estimated as the sum of the EI and RI. The Size_E and Size_R values are estimated from exponential functions of the most frequent particle length. The hardness factor is estimated as a linear function of the proportion of indigestible NDF in NDF. A minimum dietary CI value of 32 minutes per kg of total DMI is considered to ensure a sufficient intake of physically effective fibre in order to ensure good ruminal fibre digestion and to prevent a low rumen pH, digestive disorders and a low milk fat content in high-yielding dairy cows.

M3 - Article in proceedings

T3 - Grassland Science in Europe

SP - 762

EP - 764

BT - Biodiversity and animal feed

A2 - Hopkins, A.

A2 - Gustafsson, T.

A2 - Bertilsson, J.

A2 - Dalin, G.

A2 - Nilsdotter-Linde, N.

A2 - Spörndly, E.

PB - Sveriges Lantbruksuniversitet (SLU)

Y2 - 9 June 2008 through 11 June 2008

ER -

ID: 8692273