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  1. The effect of perches and aviary tiers on the mating behaviour of two hybrids of broiler breeders

    Contributor(s):: Gebhardt-Henrich, Sabine G., Jordan, Anja, Toscano, Michael J., Würbel, Hanno

    Broiler breeders are kept for the production of fertile eggs. They face serious welfare problems like aggressive behaviour of the males towards females during mating. Furthermore, broiler breeders are usually kept without perches which are a highly valued resource in chickens. The aim of the...

  2. Vigilance and roosting behaviour of laying hens on different perch heights

    Contributor(s):: Brendler, Christina, Kipper, Silke, Schrader, Lars

    Laying hens prefer roosting on high compared to low perches during night time. According to the antipredator hypothesis, hens on high perches can afford to be less vigilant while roosting at night. A total of 120 LSL hens in groups of five were presented a single perch, which was varied in height...

  3. Environmental complexity and use of space in slow growing free range chickens

    Contributor(s):: Rodriguez-Aurrekoetxea, Ane, Leone, Erin Hoerl, Estevez, Inma

    Production environments for meat poultry are generally bi-dimensional open areas where birds tend to cluster along the walls. We investigated the impact of increasing environmental complexity (EC) on slow-growing free-range chickens raised under commercial conditions. The study was conducted in...

  4. Choice of perch characteristics by laying hens in cages with different group size and perching behaviours

    Contributor(s):: Chen, Dong-hua, Bao, Jun, Meng, Fan-yu, Wei, Chun-bo

    Provision of perches in cages could improve behaviour and physical conditions of laying hens. This study was conducted to investigate the choice of perch characteristics (shape, width, material and height) by caged hens under different group size, and to understand the choice by the perching...

  5. Roosting behaviour in laying hens on perches of different temperatures: Trade-offs between thermoregulation, energy budget, vigilance and resting

    Contributor(s):: Pickel, Thorsten, Scholz, Britta, Schrader, Lars

    Laying hens usually select an elevated position for resting at night-time. A previous study showed that the position a hen takes during resting was affected by perch material, most probably due to its thermal conductivity. The aim of the present study was to analyse the effect of perch surface...

  6. The influence of access to aerial perches on fearfulness, social behaviour and production parameters in free-range laying hens

    Contributor(s):: Donaldson, Caroline Julie, O’Connell, Niamh Elizabeth

    The aim of this trial was to determine the influence of aerial perches on welfare and production parameters in free-range laying hens. Five commercial free-range houses, each containing between 7000 and 8000 birds, were used. Each house and range area was split in half to create two treatments....

  7. Effects of horizontal distance between perches on perching behaviors of Lohmann Hens

    Contributor(s):: Liu, Kai, Xin, Hongwei

    Perching is a highly-motivated natural behavior of laying hens that has been considered as one of the essential welfare requirements. The objective of the study was to evaluate perching behaviors of laying hens as affected by horizontal distance (HD) between parallel perches. A total of 48...

  8. The use of perches and platforms by broiler chickens

    Contributor(s):: Norring, Marianna, Kaukonen, Eija, Valros, Anna

    Perching is considered an integral part of chicken behaviour, and is suggested to alleviate leg problems and enhance mobility in broilers, as it stimulates diversification of locomotion. The use of perches is, however, low in broilers. There is a need for investigation of elevated structures that...

  9. Perch use by laying hens in aviary systems

    Contributor(s):: Brendler, Christina, Schrader, Lars

    Perching preference in laying hens is well analysed in several experimental studies. However, information about perch use on farm is scarce. The present study highlights perching preferences at daytime and night-time in 19 laying hen flocks on 18 farms with symmetric (n=9) and asymmetric (n=10)...

  10. Feeding from perches in an aviary system reduces aggression and mortality in laying hens

    Contributor(s):: Sirovnik, Janja, Stratmann, Ariane, Gebhardt-Henrich, Sabine G., Würbel, Hanno, Toscano, Michael J.

    Some commercial aviary systems for laying hens allow birds to access feed by standing on perches instead of platforms. Despite reports that providing laying hens with perches relates to reduced aggression and cannibalism, and increased prevalence of keel bone damage, the impact of feeding from...

  11. Perch-shape preference and perching behaviors of young laying hens

    Contributor(s):: Liu, Kai, Xin, Hongwei, Shepherd, Tim, Zhao, Yang

    Provision of perches in enriched colony or cage-free hen housing facilitates birds' ability to express natural behaviors, thus enhancing animal welfare. Although considerable research has been conducted on poultry perches, further investigation is needed of perching behavior and preference of...

  12. Use of aerial perches and perches on aviary tiers by broiler breeders

    Contributor(s):: Gebhardt-Henrich, Sabine G., Toscano, Michael J., Würbel, Hanno

    Perching, especially during the night, is an innate behaviour of chickens and the provision of perches is mandatory for laying hens in multiple countries. We examined whether broiler breeders of the fast (Ross 308) and relatively slow (Sasso) growing hybrids used aerial perches (P) and perches on...

  13. Exploring perch provision options for commercial broiler chickens

    Contributor(s):: Bailie, Carley L., Baxter, Mary, O’Connell, Niamh E.

    Two related experiments involving broiler chickens are presented. Experiment 1 evaluated the use of six perch types: (1) an A-frame design (incorporating a platform and ramps), (2) a 'flat top' ramp, (3) a curved ramp, (4) a suspended bar, (5) a fixed bar and (6) a suspended platform. Two of each...

  14. Abnormal behavior in caged birds kept as pets

    Contributor(s):: Hoek, C. S. van, Cate, C. ten

    There are a limited number of studies dealing with abnormal behavior in caged birds kept as pets. However, these studies demonstrate the presence of abnormal behavior in both songbirds and parrots. Ethological studies on these birds, as well as studies on domestic and zoo birds, indicate that...

  15. Avian perching deterrents on ultrasonic sensors at airport wind-shear alert systems

    Contributor(s):: Michael L. Avery, Ann C. Genchi

    Preventing birds from perching on the sensor units of the Federal Aviation Administration’s Low Level Wind-shear Alert System (LLWAS) is crucial to its successful operation. In this study we evaluated, under controlled conditions, responses of brownheaded cowbirds (Molothrus ater), fish crows...

  16. Accuracy of laying hens in jumping upwards and downwards between perches in different light environments

    Contributor(s):: Moinard, C., Statham, P., Haskell, M. J., McCorquodale, C., Jones, R. B., Green, P. R.

    Eighty Lohmann Brown layer hens were reared in floor pens fitted with perches from 1 day of age. After the peak of lay (25 weeks of age), their ability to jump to and from perches in different light environments was assessed in two experiments using digital video techniques that allowed detailed...

  17. Effects of crowding and access to perches on aggressive behaviour in broilers

    Contributor(s):: Pettit-Riley, R., Estevez, I., Russek-Cohen, E.

    To test the hypothesis that the frequency of aggression in broiler chickens will be lower in response to increased crowding and perch availability, groups of broilers were observed from 2 to 6 weeks of age. A total of 2424 broilers were used in the study. Both the type of aggression and the pen...

  18. Effects of density on perching behavior of broiler chickens

    Contributor(s):: Pettit-Riley, R., Estevez, I.

    Exercise through perching has been suggested as a way to reduce the impact of leg problems in broiler chickens. It is possible that higher stocking densities may motivate birds to perch more, and perhaps reduce some of the detrimental effects to broiler health seen with high stocking densities....

  19. Group size and perching behaviour in young domestic fowl

    Contributor(s):: Newberry, R. C., Estevez, I., Keeling, L. J.

    To test the hypothesis that young domestic fowl perform less perch-related antipredator behaviour with increasing group size, White Leghorn pullets were reared in 4 replicate groups of 15, 30, 60 and 120 at a constant density of 5 birds/m2. Each pen contained perches 20, 40 and 60 cm above the...

  20. Perch material and diameter affects particular perching behaviours in laying hens

    Contributor(s):: Pickel, T., Scholz, B., Schrader, L.

    Resting on perches is an important behaviour for laying hens. However, perches in laying hen husbandry systems are associated with health problems which may result from inadequate perch designs. The aim of this study was to focus on particular behavioural patterns shown by laying hens on...