Effect of grass silage chop length on chewing activity and digestibility

Publikation: Bidrag til bog/antologi/rapportKonferencebidrag i proceedingsForskning

Standard

Effect of grass silage chop length on chewing activity and digestibility. / Garmo, T.H.; Randby, Å.T.; Eknæs, M.; Prestløkken, E.; Nørgaard, Peder.

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. 810-812.

Publikation: Bidrag til bog/antologi/rapportKonferencebidrag i proceedingsForskning

Harvard

Garmo, TH, Randby, ÅT, Eknæs, M, Prestløkken, E & Nørgaard, P 2008, Effect of grass silage chop length on chewing activity and digestibility. 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. 810-812, EGF General Meeting, Uppsala, Sverige, 09/06/2008.

APA

Garmo, T. H., Randby, Å. T., Eknæs, M., Prestløkken, E., & Nørgaard, P. (2008). Effect of grass silage chop length on chewing activity and digestibility. 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. 810-812). Sveriges Lantbruksuniversitet (SLU). Grassland Science in Europe, Bind. 13

Vancouver

Garmo TH, Randby ÅT, Eknæs M, Prestløkken E, Nørgaard P. Effect of grass silage chop length on chewing activity and digestibility. 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. 810-812. (Grassland Science in Europe, Bind 13).

Author

Garmo, T.H. ; Randby, Å.T. ; Eknæs, M. ; Prestløkken, E. ; Nørgaard, Peder. / Effect of grass silage chop length on chewing activity and digestibility. 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. 810-812 (Grassland Science in Europe, Bind 13).

Bibtex

@inproceedings{485af120b09811ddb538000ea68e967b,
title = "Effect of grass silage chop length on chewing activity and digestibility",
abstract = "Round bale grass silage harvested early (D-value 757 g kg-1 DM) or at a normal (D-value 696 g kg-1 DM) time was used to study the effect of harvesting time, chop length and their interaction on chewing activity and digestibility by dairy cows. Six early lactating Norwegian Red cows were used in a 6 x 6 Latin square with 3-week periods. Chewing activity was measured using IGER Behaviour recorders, and digestibility was measured by total collection of faeces. The two silages were fed long (170 mm), coarsely chopped (55 mm), or finely chopped (24 mm median particle length). Cows were fed silage ad libitum and supplemented with 6 kg concentrate. Early harvested silage significantly decreased total ration eating (ET), rumination (RT) and chewing time (CT) per kg silage DM compared with normal harvested silage (CT = 38 vs. 46 min kg-1 DM). Chopping of silage reduced CT significantly, mainly due to reduced ET, CT = 45, 41 and 39 min kg-1 DM for rations with long, coarsely and finely chopped silage, respectively. Grass silage chop length did not influence diet digestibility, but there was a significant effect of harvesting time on digestibility. No interaction between harvesting time and chop length was found, neither for chewing activity nor digestibility.",
author = "T.H. Garmo and {\AA}.T. Randby and M. Ekn{\ae}s and E. Prestl{\o}kken and Peder N{\o}rgaard",
year = "2008",
language = "English",
pages = "810--812",
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",
publisher = "Sveriges Lantbruksuniversitet (SLU)",

}

RIS

TY - GEN

T1 - Effect of grass silage chop length on chewing activity and digestibility

AU - Garmo, T.H.

AU - Randby, Å.T.

AU - Eknæs, M.

AU - Prestløkken, E.

AU - Nørgaard, Peder

PY - 2008

Y1 - 2008

N2 - Round bale grass silage harvested early (D-value 757 g kg-1 DM) or at a normal (D-value 696 g kg-1 DM) time was used to study the effect of harvesting time, chop length and their interaction on chewing activity and digestibility by dairy cows. Six early lactating Norwegian Red cows were used in a 6 x 6 Latin square with 3-week periods. Chewing activity was measured using IGER Behaviour recorders, and digestibility was measured by total collection of faeces. The two silages were fed long (170 mm), coarsely chopped (55 mm), or finely chopped (24 mm median particle length). Cows were fed silage ad libitum and supplemented with 6 kg concentrate. Early harvested silage significantly decreased total ration eating (ET), rumination (RT) and chewing time (CT) per kg silage DM compared with normal harvested silage (CT = 38 vs. 46 min kg-1 DM). Chopping of silage reduced CT significantly, mainly due to reduced ET, CT = 45, 41 and 39 min kg-1 DM for rations with long, coarsely and finely chopped silage, respectively. Grass silage chop length did not influence diet digestibility, but there was a significant effect of harvesting time on digestibility. No interaction between harvesting time and chop length was found, neither for chewing activity nor digestibility.

AB - Round bale grass silage harvested early (D-value 757 g kg-1 DM) or at a normal (D-value 696 g kg-1 DM) time was used to study the effect of harvesting time, chop length and their interaction on chewing activity and digestibility by dairy cows. Six early lactating Norwegian Red cows were used in a 6 x 6 Latin square with 3-week periods. Chewing activity was measured using IGER Behaviour recorders, and digestibility was measured by total collection of faeces. The two silages were fed long (170 mm), coarsely chopped (55 mm), or finely chopped (24 mm median particle length). Cows were fed silage ad libitum and supplemented with 6 kg concentrate. Early harvested silage significantly decreased total ration eating (ET), rumination (RT) and chewing time (CT) per kg silage DM compared with normal harvested silage (CT = 38 vs. 46 min kg-1 DM). Chopping of silage reduced CT significantly, mainly due to reduced ET, CT = 45, 41 and 39 min kg-1 DM for rations with long, coarsely and finely chopped silage, respectively. Grass silage chop length did not influence diet digestibility, but there was a significant effect of harvesting time on digestibility. No interaction between harvesting time and chop length was found, neither for chewing activity nor digestibility.

M3 - Article in proceedings

SP - 810

EP - 812

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)

ER -

ID: 8543725