Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Temperature and body weight affect fouling of pig pens
Aarnink, A.J.A. ; Schrama, J.W. ; Heetkamp, M.J.W. ; Stefanowska, J. ; Huynh, T.T.T. - \ 2006
Journal of Animal Science 84 (2006). - ISSN 0021-8812 - p. 2224 - 2231.
excretory behavior - lying behavior - growing pigs
Fouling of the solid lying area in pig housing is undesirable for reasons of animal welfare, animal health, environmental pollution, and labor costs. In this study the influence of temperature on the excreting and lying behavior of growing-finishing pigs of different BW (25, 45, 65, 85, or 105 kg) was studied. Ten groups of 5 pigs were placed in partially slatted pens (60% solid concrete, 40% metal-slatted) in climate respiration chambers. After an adaptation period, temperatures were raised daily for 9 d. Results showed that above certain inflection temperatures (IT; mean 22.6°C, SE = 0.78) the number of excretions (relative to the total number of excretions) on the solid floor increased with temperature (mean increase 9.7%/°C, SE = 1.41). Below the IT, the number of excretions on the solid floor was low and not influenced by temperature (mean 13.2%, SE = 3.5). On average, the IT for excretion on the solid floor decreased with increasing BW, from approximately 25°C at 25 kg to 20°C at 100 kg of BW (P <0.05). Increasing temperature also affected the pattern and postural lying. The temperature at which a maximum number of pigs lay on the slatted floor (i.e., the IT for lying) decreased from approximately 27°C at 25 kg to 23°C at 100 kg of BW (P <0.001). At increasing temperatures, pigs lay more on their sides and less against other pigs (P <0.001). Temperature affects lying and excreting behavior of growing-finishing pigs in partially slatted pens. Above certain IT, pen fouling increases linearly with temperature. Inflection temperatures decrease at increasing BW
The effects of feeding frequency on waiting time, milking frequency, cubicle and feeding fence utilization for cows in an automatic milking system
Oostra, H.H. ; Stefanowska, J. ; Sallvik, K. - \ 2005
Acta Agriculturae Scandinavica Section A-Animal Science 55 (2005)4. - ISSN 0906-4702 - p. 158 - 165.
In this trial, the effects of the forage feeding frequency on the waiting time prior to milking and the cowshed facility utilization by cows milked in an automatic milking unit (AMU) were studied. The feeding frequency was increased from two times per day to six times per day. It was found that the average waiting time per visit for cows using the AMU was reduced from 755 s to 351 s when the feeding frequency was increased. The daily number of visits (milking visit, failed milking visit and not qualified visit) to the AMU was not affected by the change in feeding frequency. It was also found that increasing the feeding frequency had a positive effect on utilization of the cowshed facilities, such as the occupation of the feeding fence, and on the cowshed facilities in the waiting area (cubicles) of the AMU.
Orienterend onderzoek naar het gedrag van vleeskalveren op verschillende vloeren : standaard houten roostervloer, houten roostervloer met brede balken en houten roostervloer met rubber toplaag en luchtkamers vergeleken
Lauwere, C. de; Schouten, W.G.P. ; Smits, D. ; Stefanowska, J. - \ 2004
Wageningen : Agrotechnology & Food Innovations (Rapport / Agrotechnology &amp; Food Innovations 238) - ISBN 9067548294 - 22
vleeskalveren - huisvesting, dieren - roostervloeren - rubber - diergedrag - dierenwelzijn - veal calves - animal housing - grid floors - animal behaviour - animal welfare
Stoort de mestschuif de koe? A&F ondervraagt melkveehouders
Stefanowska, J. - \ 2004
Veehouderij Techniek 7 (2004)1. - ISSN 1387-3105 - p. 26 - 27.
melkveehouderij - melkkoeien - huisvesting van koeien - dierlijke meststoffen - mestschuiven - bodemoppervlak - dairy farming - dairy cows - cow housing - animal manures - dung scrapers - floor area
Agrotechnology & Food Innovations, het voormalige IMAG, vroeg omtrent het schuifgebruik naar ervaringen van 10 melkveehouders met verschillende stalvloeren en schuiven: 3 hebben een roostervloer in de stal, 2 een sleufvloer, 4 een vlakke vloer en tenslotte 1 met een hellende vloer van het berg-en-daltype (Groen Label stal)
The Effect of Two Traffic Situations on the Behavior and Performance of Cows in an Automatic Milking System
Hermans, G.G.N. ; Ipema, A.H. ; Stefanowska, J. ; Metz, J.H.M. - \ 2003
Journal of Dairy Science 86 (2003)6. - ISSN 0022-0302 - p. 1997 - 2004.
Two cow traffic situations were tested sequentially in an automatic milking system (AMS) for effects on cow behavior, effective use of the barn, and milking capacity. The first situation was forced cow traffic: 63 cows had to pass through the AMS to go from the lying area to the feeding area. The second was semiforced cow traffic: 67 cows (60 cows from before) had free access to a forage feeding area at one end of the barn but could only access an area with concentrate feeders by passing through the AMS. Behavior of all cows was monitored as well as for two subsets of cows present in both situations: 8 cows with low frequency vs. 7 cows with high frequency of visits to the AMS. In each situation, cows were observed for 72 h. Cow locations and behavior were noted at 10-min intervals for all cows and individually for the selected cows. In semiforced traffic, the herd readily used the freely accessible forage feeding area, ate longer (17.4% of the day vs. 15.1 ± 0.59%), and stood less in freestalls (9.0 vs. 11.8 ± 0.30%) than when cow traffic was forced. Nonmilking visits to the AMS tended to decrease, whereas milking visits remained unchanged in the semiforced situation. The subset of cows that visited the AMS more often had fewer nonmilking visits (1.8 vs. 4.2 ± 0.7) in the semiforced traffic situation whereas cows with low frequency of visits to the AMS had a nonsignificant increase (1.5 vs. 1.0) in nonmilking visits. Cows that visited the AMS frequently used the forage feeding area and the lying area next to it more than low frequency cows and use of those areas increased further during the semiforced situation. The semiforced cow traffic was deemed more desirable than forced cow traffic both for cows and for the capacity of the automatic milking system.
Vloer beinvloedt het gedrag en welzijn : IMAG onderzoekt vloeren in vleeskalverenstallen
Stefanowska, J. ; Schouten, W.G.P. ; Smits, D. - \ 2003
De kalverhouder 23 (2003)3. - ISSN 1389-3386 - p. 16 - 17.
kalverproductie - kalveren - vleeskalveren - vleesproductie - huisvesting van kalveren - vloeren - dierenwelzijn - agrarische bedrijfsvoering - bedrijfsvergelijking in de landbouw - calf production - calves - veal calves - meat production - calf housing - floors - animal welfare - farm management - farm comparisons
Het IMAG heeft een vergelijkend onderzoek gedaan naar de tijdsbesteding van vleeskalveren op een rubberen en op een houten vloer in de loop van de productiecyclus en naar de glij-incidenten en gedragingen van kalveren op beide vloeren
Environmental and welfare issues in dairy farming in the EU
Groot Koerkamp, P.W.G. ; Monteny, G.J. ; Swierstra, D. ; Stefanowska, J. - \ 2002
Reaction of calves to two flooring materials offered simultaneously in one pen.
Stefanowska, J. ; Swierstra, D. ; Smits, A.C. ; Berg, J.V. van den; Metz, J.H.M. - \ 2002
Acta Agriculturae Scandinavica Section A-Animal Science 52 (2002)2. - ISSN 0906-4702 - p. 57 - 64.
Now that group housing is replacing individual crates, so that calves can lie, stand and walk on the pen floor, the quality of the floor for group-housed calves has become the focus of attention. The reaction of two groups of four calves to a double area of floor made from two materials (wooden slats and synthetic slats with a rubber coating) was examined round the clock for 5 days. The calves were switched between pens twice, and in each case the 5 day observation period was repeated. In all three phases all calves spent significantly more time (P < 0.01) lying on the wooden floor: on average 656 min day-1 compared with 294 min day-1 on the synthetic floor. The time spent in the standing/walking position on both floors, occurrence of slip incidents and self-maintenance behaviour did not differ significantly between floors. The observations on use of the pen floor for lying and for standing/walking in combination with feeding, plus observations on fouling of the floors with excreta suggest that future pen design could be functionally divided into lying and walking/eating areas.
Do cows prefer a barn compartment with a grooved or slotted floor
Stefanowska, J. ; Swierstra, D. ; Berg, J.V. van den; Metz, J.H.M. - \ 2002
Journal of Dairy Science 85 (2002). - ISSN 0022-0302 - p. 79 - 88.
Cow preferences for one of two compartments with different floors were tested in a barn with two symmetrical, connected compartments, each intended for 16 cows. Compartments were identical except for the floor. One floor was grooved longitudinally to the feeding barrier and the other was slotted perpendicular to that barrier. Sixteen pregnant, lactating Holstein-Friesian cows were used. After 14 d of habituation, cow behavior was videotaped for 10 full 24-h d, spread over 22 d. Their daily time budget spent on different activities performed in both compartments was analyzed, as was their relocation and use of the concentrate dispenser in each compartment. On average, cows spent 120 min longer per day in the slotted floor compartment than in the grooved floor compartment, and performed all activities in the daily time budget significantly longer in this compartment. However, testing the preference of individuals revealed that, although five cows significantly preferred the slotted floor compartment, two cows significantly preferred the other compartment, and nine cows had no preference. On the slotted floor, cows ate longer at the feeding barrier and more often drank front-on to the water trough; on the grooved floor they more often drank standing parallel to the water trough. Thus, they seemed to prefer to stand parallel to the slots. Relocation of cows, indicated by index of movement, was not significantly different between the floors. Relocation seemed to be stimulated more by the presence of concentrate dispensers in both compartments than by floor profile. Although one floor type was not clearly preferred over the other, the findings and methods of this study have implications for design and implementation of future preference tests for testing husbandry systems and their components.
Cow behaviour on a new grooved floor in comparison with a slatted floor, taking claw health and floor properties into account
Stefanowska, J. ; Swierstra, D. ; Braam, C.R. ; Hendriks, M.M.W.B. - \ 2001
Applied Animal Behaviour Science 71 (2001). - ISSN 0168-1591 - p. 87 - 103.
Kalveren kiezen tussen hardhout en kunststof
Stefanowska, J. ; Swierstra, D. ; Smits, D. - \ 2001
Veehouderij Techniek 4 (2001)4. - ISSN 1387-3105 - p. 12 - 13.
vleeskalveren - slachtdieren - rundvee - vloeren - vloertypen - kunststoffen - hardhout - diergedrag - huisvesting, dieren - groepshuisvesting - veal calves - meat animals - cattle - floors - floor type - plastics - hardwoods - animal behaviour - animal housing - group housing
Het effect van de vloer op het gedrag van kalveren werd met een proef onderzocht. De hardhouten vloer had de voorkeur van de kalveren
Minder 'agressie' op nieuwe kunststofvloer
Stefanowska, J. ; Swierstra, D. - \ 2001
Veehouderij Techniek 4 (2001)4. - ISSN 1387-3105 - p. 10 - 11.
melkkoeien - rundveerassen - stallen - ligboxen - vloertypen - kunststoffen - dekken - structuren - diergedrag - activiteitsmeting - klauwen - diergezondheid - dairy cows - cattle breeds - stalls - cubicles - floor type - plastics - decks - structures - animal behaviour - activity sampling - claws - animal health
Het voorzien van een 'gladde' betonvloer van een opgelegde sleufvloer van kunststofplanken. Middels een vergelijkingsproef van 28 dagen waaraan 15 melkkoeien deelnamen, werden de dieractiviteiten in beeld gebracht. De bevindingen zijn besproken
Welfare of cows during automatic milking
Stefanowska, J. - \ 2001
In: Proceedings of the International Symposium of the C.I.G.R. 2nd Technical Section, Szklarska Poreba (P), 23-25 October - p. 261 - 271.
Cow welfare in a precision dairy farming environment
Metz, J.H.M. ; Stefanowska, J. - \ 2001
In: Proceedings of the 2nd Dutch-Japanese Workshop on Precision Dairy Farming, Nishinasuno (Japan), 2-4 Dezember 2000 - p. 19 - 24.
Pen fouling in pig houses affected by temperature
Aarnink, A.J.A. ; Schrama, J.W. ; Verheijen, E.J.E. ; Stefanowska, J. - \ 2001
In: 6th Int. Symp. on Livestock Environment, St. Joseph Mich. USA / ASAE Michigan USA : - p. 180 - 186.
Effect voorbehandelen zonder melken niet groot
Ipema, A.H. ; Stefanowska, J. - \ 2000
Veehouderij Techniek 3 (2000)1. - ISSN 1387-3105 - p. 18 - 19.
melkmachines - robots - melkveehouderij - melkvee - machinaal melken - melken - tepels - uiers - melkopbrengst - melkproductie - milking machines - dairy farming - dairy cattle - machine milking - milking - teats - udders - milk yield - milk production
Het IMAG onderzocht hoe de melkproductie en de melkafgifte reageren als koeien een melkstal bezoeken, wel worden voorbehandeld en vervolgens niet worden gemolken
Effects of milking stall visits with simulated failed milking on milk yield and milking performance
Ipema, A.H. ; Stefanowska, J. - \ 2000
In: Institute for Agricultural and Environmental Engineering (IMAG), Wageningen (Netherlands). International Symposium on Robotic Milking. Lelystad (Netherlands). 17-19 Aug 2000. Hogeveen, H.; Meijering, A. (Eds.). Robotic milking. Wageningen (Netherlands). Wageningen Pers. 2000. 306 p - p. 62 - 63.
Robot milking and effect on reproduction in dairy cows: a preliminary study
Kruip, T.A.M. ; Stefanowska, J. ; Ouweltjes, W. - \ 2000
Animal Reproduction Science 60-61 (2000). - ISSN 0378-4320 - p. 443 - 447.
Koeborstel voor moeilijk bereikbare plekjes
Stefanowska, J. - \ 2000
Veehouderij Techniek 3 (2000)5. - ISSN 1387-3105 - p. 24 - 25.
melkveehouderij - schoonmaakgereedschap - melkvee - borstels - huisvesting van koeien - diergedrag - dierenwelzijn - melkkoeien - dairy farming - cleaning equipment - dairy cattle - brushes - cow housing - animal behaviour - animal welfare - dairy cows
Veehouders installeren koeborstels om hun koeien te helpen bij het schoonmaken van de moeilijk bereikbare plaatsen. Een IMAG onderzoek naar het gebruik, een overzicht van leveranciers en de resultaten van een enquete onder veehouders
Beter welzijn met koeien buiten
Stefanowska, J. - \ 2000
Veehouderij Techniek 3 (2000)4. - ISSN 1387-3105 - p. 18 - 19.
melkveehouderij - melkkoeien - dierenwelzijn - melkmachines - robots - ligboxen - diergedrag - dairy farming - dairy cows - animal welfare - milking machines - cubicles - animal behaviour
Het IMAG onderzocht een groep koeien die met een melkrobot werden gemolken en binnen een ideale ligplaats hadden. Waar voelen de koeien zich het plezerigst: binnen of buiten? De resultaten van dit onderzoek
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