PMID- 15653528
OWN - NLM
STAT- MEDLINE
DCOM- 20050329
LR  - 20050117
IS  - 0022-0302 (Print)
IS  - 0022-0302 (Linking)
VI  - 88
IP  - 2
DP  - 2005 Feb
TI  - Frictional forces required for unrestrained locomotion in dairy cattle.
PG  - 615-24
AB  - Most free-stall housing systems in the Netherlands are equipped with slatted or 
      solid concrete floors with manure scrapers. A slipping incident occurs when the 
      required coefficient of friction (RCOF) exceeds the coefficient of friction (COF) 
      at the claw-floor interface. An experiment was conducted to measure ground 
      reaction forces (GRF) of dairy cows (n = 9) performing various locomotory 
      behaviors on a nonslippery rubber-covered concrete floor. The RCOF was determined 
      as the ratio of the horizontal and vertical components of the GRF. It was shown 
      that during straight walking and walking-a-curve, the RCOF reached values up to 
      the COF, whereas for sudden stop-and-start responses, the RCOF reached values 
      beyond the maximum COF that concrete floors can provide. Our results indicate 
      that concrete floors do not provide enough friction to allow natural locomotory 
      behavior and suggest that tractional properties of floors should be main design 
      criteria in the development of better flooring surfaces for cattle.
FAU - van der Tol, P P J
AU  - van der Tol PP
AD  - Department of Veterinary Anatomy, Faculty of Veterinary Medicine, Utrecht 
      University, PO Box 80158, 3508 TD Utrecht, The Netherlands. Rik.vanderTol@wur.nl
FAU - Metz, J H M
AU  - Metz JH
FAU - Noordhuizen-Stassen, E N
AU  - Noordhuizen-Stassen EN
FAU - Back, W
AU  - Back W
FAU - Braam, C R
AU  - Braam CR
FAU - Weijs, W A
AU  - Weijs WA
LA  - eng
PT  - Journal Article
PL  - United States
TA  - J Dairy Sci
JT  - Journal of dairy science
JID - 2985126R
SB  - IM
MH  - Animals
MH  - Cattle/*physiology
MH  - Female
MH  - *Floors and Floorcoverings
MH  - Friction
MH  - Hoof and Claw/injuries
MH  - *Housing, Animal
MH  - *Motor Activity
MH  - Walking
EDAT- 2005/01/18 09:00
MHDA- 2005/03/30 09:00
CRDT- 2005/01/18 09:00
PHST- 2005/01/18 09:00 [pubmed]
PHST- 2005/03/30 09:00 [medline]
PHST- 2005/01/18 09:00 [entrez]
AID - S0022-0302(05)72725-9 [pii]
AID - 10.3168/jds.S0022-0302(05)72725-9 [doi]
PST - ppublish
SO  - J Dairy Sci. 2005 Feb;88(2):615-24. doi: 10.3168/jds.S0022-0302(05)72725-9.