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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Alternatieven voor doden eendagshaantjes
Leenstra, Ferry - \ 2017
poultry farming - killing of animals - chicks - poultry - young animals - animal welfare - animal production - animal health
Stalboekje Pluimvee 2017 : Handboek voor natuurlijke pluimveegezondheidzorg met kruiden en andere natuurproducten
Groot, Maria ; Puls-van der Kamp, Ineke ; Asseldonk, Tedje van - \ 2017
Wageningen : RIKILT Wageningen University & Research (RIKILT uitgave 2017.701) - 107
pluimveehouderij - pluimvee - diergezondheid - dierenwelzijn - medicinale planten - geneeskrachtige kruiden - dierziektepreventie - dierlijke productie - biologische landbouw - handboeken - vleeskuikens - hennen - poultry farming - poultry - animal health - animal welfare - medicinal plants - herbal drugs - animal disease prevention - animal production - organic farming - handbooks - broilers - hens
De stalboekjes zijn oorspronkelijk gemaakt voor de biologische veehouderij (versies 2009 en 2011) in het kader van onderzoek voor Biokennis. Deze uitgave is in 2014 en 2015 aangevuld met nieuwe middelen en inzichten en aangepast voor toepassing in de gangbare pluimveehouderij. Dit betekent o.a. dat een hoofdstuk over vleeskuikens is toegevoegd en het leghennen stuk is uitgebreid. Het streven om het gebruik van antibiotica terug te dringen vraagt om een ander management. Goede voeding, huisvesting en hygiëne zijn hierbij belangrijk. In dit boekje worden aanwijzingen gegeven om met natuurlijke middelen de gezondheid van de dieren te bevorderen en zo ziektes te voorkomen. Tevens kunnen middelen worden ingezet om de ernst van de ziekte te reduceren. Doel is tevens om de dierenartsen te informeren over de mogelijkheden van natuurproducten en de wetenschappelijke onderbouwing hiervan inzichtelijk te maken.
In vitro studie naar de invloed van intrinsiek en microbieel fytase op de afbraak van fytinezuur in biologische geteelde grondstoffen voor de dierhouderij : Een verkennende studie
Jonge, L.H. ; Wikselaar, P.G. van; Bikker, P. ; Krimpen, M.M. van - \ 2017
Wageningen : Wageningen Livestock Research (Wageningen Livestock Research rapport 1006) - 25
fytase - fytinezuur - biologische landbouw - veevoeder - voer - varkenshouderij - pluimveehouderij - ruwe grondstoffen - fosfaat - phytase - phytic acid - organic farming - fodder - feeds - pig farming - poultry farming - raw materials - phosphate
In this study, the usefulness of intrinsic phytase of plant ingredients for degrading phytate was investigated. The enzymatic conversion from phytate to soluble inorganic phosphate was determined in vitro with and without addition of microbial phytase. Phytate degradation was measured in mixtures in which ingredients with a high intrinsic phytase activity and ingredients with a high phytate content were combined.
De voordelen van integreren : Jelmer Zandbergen onderzocht voor zijn MSc studie het houden van kippen in een boomgaard
Zandbergen, Jelmer - \ 2017
Ekoland (2017)3. - ISSN 0926-9142 - p. 22 - 23.
fruitteelt - kippen - boomgaarden - biologische landbouw - pluimveehouderij - uitloop - diergedrag - fruit growing - fowls - orchards - organic farming - poultry farming - outdoor run - animal behaviour
Als onderdeel van een MSc studie Organic Agriculture aan de WUR heeft Jelmer Zandbergen een onderzoeksproject uitgevoerd op de Fruittuin van West. De Fruittuin van West is een bedrijf van 6 hectare in Amsterdam Nieuw-West, in 2014 opgezet door Wil Sturkenboom. Er worden meer dan 20 soorten fruit geteeld en er lopen kippen in de boomgaard.
Bringing eggs and bones to light : affecting leg bone development in broiler chickens through perinatal lighting schedules
Pol, Carla W. van der - \ 2017
University. Promotor(en): Bas Kemp, co-promotor(en): Henry van den Brand; Inge Van Roovert-Reijrink. - Wageningen : Wageningen University - ISBN 9789463431422 - 214
broilers - limb bones - biological development - embryonic development - eggs - light regime - incubation - hatching - circadian rhythm - animal pathology - animal health - poultry farming - vleeskuikens - beenderen van ledematen - biologische ontwikkeling - embryonale ontwikkeling - eieren - lichtregiem - broeden - uitbroeden - circadiaan ritme - dierpathologie - diergezondheid - pluimveehouderij

Leg bone pathologies are a common problem in broiler chickens, and they can lead to decreased welfare and poor production performance. It can be speculated that the ae­tiology of some leg bone pathologies lies, to some extent, in suboptimal early life bone development. One factor that can be speculated to affect bone development, and conse­quently leg health, in broiler chickens is application of light. Light has several properties, such as light intensity, color, duration, and schedule. The present thesis focuses on ligh­ting schedules. Aim was to investigate how lighting schedules applied during incubation and in the early post hatch period (the brooding period) affected leg bone development throughout a broiler’s life and leg health at slaughter age.

In 4 studies, effects of eggshell temperature (EST) and lighting schedule during incuba­tion and in the brooding period on leg bone development, leg health, and production parameters were explored. The first study found that an EST of 39.4°C led to lower bone dimensions at hatch than an EST between 37.8 and 38.6°C. It was then decided that incubation experiments on bone development would best be performed at a constant EST of 37.8°C, as this is also an EST that leads to good hatchability and chick quality. In two studies, the effects of circadian lighting schedules during incubation on leg bone development and leg health were investigated. Staining of the embryonic leg bones sho­wed that applying a circadian lighting schedule of 12 hours of light, followed by 12 hours of darkness (12L:12D) resulted in an earlier onset of embryonic ossification of the tibia than continuous light (24L). Compared to 24L, 12L:12D furthermore resulted in higher tibia weight and length, and higher tibial cortical area, cortical thickness, and second moment of area around the minor axis at hatch as revealed by MicroCT scanning. It was furthermore found that 12L:12D resulted in a lower incidence of the leg pathology tibial dyschondroplasia. Continuous darkness (24D) was mostly intermediate. On the other hand, a circadian lighting schedule of 16 hours of light, followed by 8 hours of darkness (16L:8D) did not show the same stimulatory effect on leg bone development, as no dif­ferences in gene expression markers involved in embryonic ossification were found, leg bone dimensions at hatch were not increased, and bone mineral content as determined by DXA scanning was not higher for 16L:8D. It can therefore be speculated that the dark period should exceed 8 hours per day during incubation for increased bone dimensions and ossification. However, incidence and severity of the leg bone pathologies in the form of bacterial chondronecrosis with osteomyelitis and epiphyseal plate abnormalities were lowest for broilers exposed to 16L:8D during incubation, and tibial dyschondroplasia tended to be lower for 16L:8D than for 24D. Interactions between incubation and mat­ching or mismatching post hatch lighting schedules were not found. It was speculated that the endocrine factors (pineal) melatonin, growth hormone, corticosterone, and IGF- 1 were a pathway through which light affected leg bone development, but no evidence was found to support this hypothesis. Production performance was not greatly influen­ced by incubation lighting schedule, but 24L was found to result in higher body weights at slaughter age than 16L:8D and 24D. In the final experiment, lighting schedules were applied during the brooding period from day 0 to 4 after hatching and leg bone develop­ment was measured at day 4 post hatch. 24L led to increased leg bone dimensions, but lower developmental stability of the leg bones than a lighting schedule with 1 or 6 hours of darkness after every 2 hours of light.

The overall findings of this thesis suggest that continuous light during incubation and in the brooding period had a detrimental effect on embryonic and early post hatch leg bone development and health. The involvement of endocrine factors was not clarified from the current results. Applying a light-dark rhythm during incubation may improve embryonic leg bone development and leg health at slaughter age compared to continuous light and continuous darkness, without affecting post hatch production performance, but it appears that the dark period should last longer than 8 hours per day for optimal leg bone development.

Actualisering ammoniak emissiefactoren pluimvee : advies voor aanpassing van ammoniak emissiefactoren van pluimvee in de Regeling ammoniak en veehouderij (Rav)
Ellen, H.H. ; Groenestein, C.M. ; Ogink, N.W.M. - \ 2017
Wageningen : Wageningen UR Livestock Research (Livestock Research rapport 1015) - 60
pluimvee - pluimveehouderij - ammoniakemissie - regulatie - dierhouderij - poultry - poultry farming - ammonia emission - regulation - animal husbandry
Retrospectieve analyse van standaard vastgelegde data in de vleeskuikenproductieketen
Jong, I.C. de; Riel, J.W. van - \ 2017
Wageningen : Wageningen UR Livestock Research (Livestock Research rapport 1013) - 32
vleeskuikens - vleeskuikenproductie - pluimveehouderij - prestatiekenmerken - gegevens verzamelen - gegevensanalyse - nederland - dierenwelzijn - dierlijke productie - broilers - broiler production - poultry farming - performance traits - data collection - data analysis - netherlands - animal welfare - animal production
Handelingsperspectief voor pluimveehouders in de preventie van laag- en hoogpathogene vogelgriep (AI)
Bokma, Martien ; Bergevoet, Ron ; Elbers, Armin ; Goot, Jeanet van der; Neijenhuis, Francesca ; Niekerk, Thea van; Leenstra, Ferry - \ 2016
Wageningen : Wageningen Livestock Research (Wageningen Livestock Research rapport 998) - 42
aviaire influenza - hennen - pluimveehouderij - boeren - dierziektepreventie - risicofactoren - avian influenza - hens - poultry farming - farmers - animal disease prevention - risk factors
Committed by the Dutch poultry sector research is carried out concerning acting perspective for prevention of AI-introduction on poultry farms, based on existing knowledge. The findings are shown in two parts: part I with practical advices for poultry farmers, and part II with its underpinning with a summary of existing knowledge of risk factors, preventive measures, early detection and possibilities for promoting desired (preventive) behaviour.
Ontwikkeling van een rekentool om de ammoniakemissie uit vleeskuikenstallen te kunnen voorspellen
Aarnink, Andre ; Harn, Jan van; Banken, Klaas ; Ogink, Nico - \ 2016
Wageningen : Wageningen Livestock Research (Livestock Research rapport 990) - 73
vleeskuikens - ammoniakemissie - modellen - pluimveehouderij - broilers - ammonia emission - models - poultry farming
Slapeloze nachten - Ernstige besmetting van bloedluis bij kippen
Jong, I.C. de - \ 2016
Wageningen Livestock Research
dermanyssus gallinae - pluimveehouderij - diergezondheid - bestrijdingsmethoden - parasieten - poultry farming - animal health - control methods - parasites
De vogelmijt (ook wel bloedluis genoemd) is een parasiet die bij grote aantallen grote effecten heeft op de pluimveehouderij. Bekijk in dit filmpje de effecten en de maatregelen.
Pikkerij bij kalkoenen : een stap terug naar het natuurlijk gedrag en soortspecifieke eigenschappen
Niekerk, Thea van; Bracke, Marc B.M. - \ 2016
Wageningen : Wageningen UR Livestock Research (Livestock Research rapport 974) - 42
kalkoenen - verenpikken - diergedrag - gedragsbiologie - gedragsstoornissen - abnormaal gedrag - pluimveehouderij - dierenwelzijn - pluimvee - diergezondheid - turkeys - feather pecking - animal behaviour - behavioural biology - behaviour disorders - abnormal behaviour - poultry farming - animal welfare - poultry - animal health
With the upcoming ban on beak treatments in the Netherlands alternative measures have to be found to prevent injurious pecking behaviour in turkeys. The measures that are successful for chickens do not seem to have a lot of effect in turkeys. In this report the natural behaviour of turkeys has been reviewed to get more insight in the causes of injurious pecking in turkeys. This insight is used to find possible solutions for preventing injurious pecking in turkeys.
Actualisering geuremissiefactor vleeskuikens
Ogink, N.W.M. ; Ellen, H. ; Mosquera, J. - \ 2016
Wageningen : Wageningen Livestock Research (Livestock Research rapport 960) - 25
vleeskuikens - pluimveehouderij - stankemissie - regelingen - nederland - broilers - poultry farming - odour emission - regulations - netherlands
The aim of this study was to advice on the update of the odour emission factor for broiler houses that is used in the national regulation to control nuisance from odour from livestock (Rgv) in the Netherlands. The update was based a statistical analysis of odour emission data from field studies carried on 28 broiler barns between 1996 en 2014. The main conclusion drawn from this analysis was that the odour emission under current management conditions is higher than the so far used odour emission factor in the Rgv-regulation. The current odour emission factor in the Rgv assigned to broiler houses without additional air cleaning techniques amounts 0.24 OUE/s per placed bird. It is advised to adjust this factor to 0.33 OUE/s per placed bird.
Effects of temperature and CO2 during late incubation on broiler chicken development
Maatjens, C.M. - \ 2016
University. Promotor(en): Bas Kemp, co-promotor(en): Henry van den Brand; I.A.M. van Roovert-Reijrink. - Wageningen : Wageningen University - ISBN 9789462578258 - 196 p.
broilers - embryonic development - temperature - carbon dioxide - incubation - animal physiology - broiler performance - artificial hatching - hatcheries - poultry farming - vleeskuikens - embryonale ontwikkeling - temperatuur - kooldioxide - broeden - dierfysiologie - vleeskuikenresultaten - kunstmatig bebroeden - broedinstallaties - pluimveehouderij

Incubation conditions need to be adjusted to meet embryonic requirements to obtain optimal chick quality and hatchability. Eggshell temperature (EST) can be used as a non- invasive method to determine embryo temperature. A high EST of 38.9°C during the second or third week of incubation negatively affects chicken embryo development and survival compared to a constant EST of 37.8°C during that period. These negative effects of high EST might be due to a dis-balance between metabolic rate and oxygen (O2) availability. However, effects of lowering EST, which might restore the balance between metabolic rate and O2 availability, are largely unknown. Besides EST, the carbon dioxide (CO2) concentration during late incubation also seems to affect embryo development and might even interact with EST. Based on the potential effects of (lower) EST during the last week of incubation and of CO2 during only the hatching phase, the following three aims are derived: 1, to investigate effects of EST during the last phase of the incubation process, with special attention for EST below the general accepted optimal EST of 37.8°C, 2, to examine from which day of the incubation process onward EST should be changed from 37.8°C, and 3, to investigate whether CO2 concentrations are interacting with EST during the hatcher phase.

Time until hatch was longer when an EST of 35.6°C was applied during the last week of incubation, followed by 36.7, 37.8, and 38.9°C, which is probably caused by the lower metabolic rate at an EST below 37.8°C. Hatchability of fertile eggs was not affected at low EST, and EST did not affect time between internal pipping (IP) and hatch. An EST of 35.6 and 36.7°C, resulted in a higher yolk-free body mass (YFBM) at hatch compared to 37.8 and 38.9°C, and residual yolk weight was higher at hatch at 38.9°C compared to all other EST treatments. An EST of 35.6°C resulted in higher hepatic glycogen concentration and amount at IP and hatch compared to all other EST treatments. The proposed mechanism involved is that at lower EST, metabolic rate is reduced, which prevents the embryo from O2 limitation and ensures that fatty acid oxidation from the yolk can be maintained, resulting in energy production to be invested in growth and development. At an EST of 38.9°C, metabolic rate is high, resulting in a relative O2 shortage for the embryo. Consequently, lipid oxidation is reduced, which forces the embryo to switch to alternative energy sources, such as glycogen. Because glycogen storage is very limited in the egg and embryo, alternative energy sources such as amino acids obtained from muscles might be used. A clear interaction between EST and start day of treatment was found for relative heart weight. Relative heart weight was higher at an EST of 35.6°C and decreased with increase in EST. The differences among EST became larger when the EST treatment started earlier.

Effects of CO2 on embryo physiology, embryonic organ development, and chick quality were marginal. EST interacted with CO2 mainly before IP, but effects were minor at hatch. Interactions between EST and CO2 were found at an EST of 36.7 and 37.8°C, but remained absent at an EST of 38.9°C, which might indicate that physiological systems are already challenged due to the higher metabolic rate, which limits the capacity to cope with high CO2 of the embryo.

No effect of start day of treatment was indicated for embryonic organ development and chick quality found at hatch, which suggests that EST affected these parameters only in the last phase of incubation, e.g. from E19 onward. However, first week post-hatch performance was affected by start day of treatment. The beneficial effects of a lower EST of 35.6 and 36.7°C applied during the last week of incubation found at hatch, might contribute to an enhanced development during the first week post-hatch as body weight, carcass weight, and gain to feed ratio were increased.

In conclusion, results of this thesis show that an EST below 37.8°C during late incubation is beneficial for embryo development, organ growth during incubation, and growth performance during the first week post-hatch. In addition, start day of treatment did not affect chick quality and organ growth, except heart weight, at hatch, which implies that effects of EST occur during the hatching phase, e.g. from E19 onward. Although, an effect of start day of treatment was found on first week post-hatch performance, it remains to be investigated whether an EST below 37.8°C leads to improved later life quality characteristics.

Weet wat je eet: keurmerken voor een beter leven - Dierenwelzijn in beeld
Ruis, M.A.W. - \ 2016
Dierenwelzijnsweb
dierenwelzijn - dierlijke productie - rundveehouderij - varkenshouderij - pluimveehouderij - huisvesting, dieren - varkens - pluimvee - melkvee - vleesvee - animal welfare - animal production - cattle husbandry - pig farming - poultry farming - animal housing - pigs - poultry - dairy cattle - beef cattle
Van veel van keurmerken is onduidelijk hoe betrouwbaar ze zijn en wat ze zeggen over dierenwelzijn of andere kenmerken van een product. Het bekendste keurmerk om diervriendelijk geproduceerde producten te ondersteunen is het Beter Leven keurmerk van de Dierenbescherming. Het Beter Leven keurmerk is een label met 3 sterren dat op steeds meer verpakkingen van vlees en eieren te vinden is. Hoe meer sterren, hoe beter het leven van de dieren is geweest. De Dierenbescherming laat het label door onafhankelijke professionals borgen. In deze video wordt uitgelegd waar 1, 2 of 3 sterren voor staan.
Ontwikkeling pluimveehouderij met focus op dierenwelzijn - Dierenwelzijn in beeld
Ruis, M.A.W. - \ 2016
You Tube
pluimvee - dierlijke productie - dierenwelzijn - diergedrag - huisvesting, dieren - diervoeding - diergezondheid - dierethiek - domesticatie - kippen - pluimveehouderij - lesmaterialen - poultry - animal production - animal welfare - animal behaviour - animal housing - animal nutrition - animal health - animal ethics - domestication - fowls - poultry farming - teaching materials
De hedendaagse kip is ontstaan uit vier wilde rassen. Het Bankivahoen uit Zuid-Oost Azie is hiervan de belangrijkste. Vanaf 1.500 vóór Christus verspreidde het hoen zich door heel Zuid-Oost Azië, China en Japan. In Noordwest Europa is de kip vermoedelijk rond 200 voor Christus geïntroduceerd door de Grieken en Romeinen. In de jaren ’50 van de vorige eeuw werd in Nederland op grote schaal geïnvesteerd in innovaties en verschenen de grote broedmachines en de eerste volautomatische legbatterijen. Ook kwamen begin jaren ’50 verschillende ‘merken’ hybride kippen - kruisingen van zuivere lijnen of rassen - op de markt. Hieruit ontstonden de hoogproductieve leghennen en vleeskuikens.

Halverwege de jaren ’60 dringt in de maatschappij het besef door dat er weinig oog is voor het welzijn van kippen. Decennia later heeft dit geleid tot een aantal veranderingen en verboden. Vanaf 2012 is het in heel Europa verboden om leghennen in legbatterijen te houden, en het aantal vleeskuikens per vierkante meter is in Europa aan banden gelegd. Een ander voorbeeld is de aankomende plicht om leghennen, en vermeerderingsdieren voor de vleessector, met hele snavels te houden. De pluimveesector is de uitdaging aangegaan om vlees en eieren duurzamer te produceren.
Transmission of antibiotic resistance from animals to humans : Broilers as a reservoir of ESBL-producing bacteria
Huijbers, P.M.C. - \ 2016
University. Promotor(en): Mart de Jong; Lisette Graat; E. van Duijkeren. - Wageningen : Wageningen University - ISBN 9789462576216 - 156 p.
broilers - man - disease transmission - antibiotic resistance - bacteria - enterobacteriaceae - poultry farming - epidemiology - vleeskuikens - mens - ziekteoverdracht - antibioticaresistentie - bacteriën - pluimveehouderij - epidemiologie

Huijbers, P.M.C. (2016). Transmission of antibiotic resistance from animals to humans: Broilers as a reservoir of ESBL-producing bacteria. PhD thesis, Wageningen University, Wageningen, the Netherlands.

Antibiotic resistance in animals becomes a public health issue when there is transmission of antibiotic resistant bacteria, or their resistance genes, from animals to humans. β-lactam antibiotics are critically important for the treatment of human bacterial infections. Resistance to this class of antibiotics, mediated by extended-spectrum β-lactamases (ESBL) has emerged. Broilers might contribute to transmission to humans due to the high prevalence of ESBL-producing Enterobacteriaceae among their intestinal biome, compared to other livestock species, companion animals, and wildlife. Transmission to humans might occur via the food chain, by direct contact or via the environment. The aim was to investigate transmission of antibiotic resistant bacteria between animals and humans, and more specifically transmission of ESBL-producing E. coli between broilers, and between broilers and humans in varying degrees of contact with these animals. Systematically collected and categorised evidence from literature showed that clinically relevant antibiotic resistant bacteria were present in the natural environment, that is in soil, water, air and wildlife. It was therefore hypothesised that humans in areas with high broiler densities might have an increased risk for carriage of ESBL-producing Enterobacteriaceae. This hypothesis was rejected, as the observed risk was lower for these individuals. The situation might be different for individuals living on broiler farms as ESBL-producing E. coli were detected on all investigated farms. Among broilers, the within farm prevalence approached 100%, and there was no difference between conventional and organic farms at five weeks, i.e. just before slaughter on conventional farms. On organic farms, the prevalence decreased to 80.0% at 70 days, i.e. slaughter age. Not only transmission to humans via the farm environment, but close physical contact with broilers might, therefore, lead to increased risk for carriage. Prevalence among farmers, their family members and employees on both conventional (19.1%) and organic (18.5%) broiler farms was higher compared to humans in the general population (5.1%). Moreover, people in close contact with live broilers showed the highest risk (27.1 vs. 14.3%). Evidence for clonal transmission of ESBL-producing E. coli between humans and broilers was found on conventional farms, and horizontal gene transfer was suspected on both conventional and organic farms. Even without selection pressure from antibiotics ESBL-producing E. coli were able to transmit and persist in an organic broiler flock, which shows that broilers form a reservoir of antibiotic resistance genes. This leads to an increased risk of carriage of humans on farms through direct contact with broilers and possibly via the direct farm environment. As only a very small percentage of the general population is exposed to live broilers, direct contact with broilers does not appear to be important for carriage in the general human population.

Response of broilers on incremental dietary P content and consequences for P- requirements
Krimpen, M.M. van; Dekker, R.A. ; Emous, R.A. van; Bikker, P. ; Bruininx, E.M.A.M. ; Lee, A.G. - \ 2016
Wageningen UR Livestock Research (Livestock Research report 931) - 44 p.
broilers - phosphorus - nutrient requirements - poultry feeding - broiler performance - feeds - poultry farming - vleeskuikens - fosfor - voedingsstoffenbehoeften - pluimveevoeding - vleeskuikenresultaten - voer - pluimveehouderij
The aim of the current experiment was to determine the aP requirements in modern broilers by performing a dose-response experiment. This study showed that for realizing maximal performance, in phase 1 (d1-d10) 5.4 g aP per kg of feed was required, in phase 2 (d11-d21) 4.3 g aP per kg of feed, and in phase 4 (d31-d38) 2.6 g aP per kg of feed. In phase 3 (d22-d30), performance of the broilers was not affected by dietary aP content. For realizing maximal tibia ash content in phase 3, an aP-level of 3.8 g/kg was required.
Floor egg collection with PoultryBot
Vroegindeweij, B.A. - \ 2015
Farm Technology Group Wageningen UR
poultry farming - robots - floor eggs - farm equipment - innovations - pluimveehouderij - grondeieren - boerderij uitrusting - innovaties
In this movie, results are presented from autonomous floor egg collection with PoultryBot. This is the final Proof of Concept of integrating the various components for localisation, path planning, object detection, navigation and egg collection. The tests are performed in our test-setup, which (from a robot's perspective) resembles a poultry house containing two rows of interior objects
H5N8 in Nederland in 2014 : Een nadere blik op de uitbraken
Velkers, F.C. ; Elbers, A.R.W. ; Bouwstra, R.J. ; Stegeman, A. - \ 2015
dierenwelzijn - dierlijke productie - pluimvee - dierziekten - diergezondheid - aviaire influenza - pluimveehouderij - animal welfare - animal production - poultry - animal diseases - animal health - avian influenza - poultry farming
In opdracht van het Ministerie van Economische Zaken (EZ) is een analyse uitgevoerd van de H5N8 uitbraken om nader inzicht in binnenkomst, verspreiding en symptomen van het virus op pluimveebedrijven te krijgen. De bevindingen zijn tussentijds gerapporteerd via het overleg van de deskundigengroep dierziekten. De volledige
rapportage is eind 2014 aangeboden aan het Ministerie van EZ. Dit document is een samenvatting hiervan.
Licht op licht: licht en verlichting in de pluimveehouderij in relatie tot beschadigend pikgedrag
Niekerk, T.G.C.M. van; Ellen, H.H. ; Winkel, A. - \ 2015
Livestock Research Wageningen UR (Livestock Research rapport 922) - 33 p.
pluimvee - licht - lichtregiem - gezichtsvermogen - verenpikken - pluimveehouderij - dierenwelzijn - dierlijke productie - hennen - huisvesting, dieren - diergezondheid - diergedrag - poultry - light - light regime - vision - feather pecking - poultry farming - animal welfare - animal production - hens - animal housing - animal health - animal behaviour
In this report an overview is given of the technical knowledge with regards to light. light sources and the vision of poultry. Recent developments in lighting of poultry houses are mainly focused on new light sources, specifically LED, and the presence of daylight. Daylight comprises UV, which for poultry is a visual part of the spectrum. Chickens also see better in the red and green-blue spectrum. Technically it is possible to make lamps in the desired spectrum, but there is insufficient knowledge of the demands of the bird to be able to tune the lamps to their needs.
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