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  1. Effects of qualitative feed restriction in broiler breeder pullets on behaviour in the home environment

    Contributor(s):: Riber, Anja B., Tahamtani, Fernanda M., Steenfeldt, Sanna

    2021Applied Animal Behaviour Science2351052250168-159110.1016/j.applanim.2021.105225text

  2. 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...

  3. Comparative assessment of general behaviour and fear-related responses in hatchery-hatched and on-farm hatched broiler chickens

    Contributor(s):: Giersberg, Mona F., Poolen, Ilse, de Baere, Kris, Gunnink, Henk, van Hattum, Theo, van Riel, Johan W., de Jong, Ingrid C.

    Traditionally, broiler chickens hatch in the hatchery and they are usually not provided with feed and water until placement at the farm. This can have negative effects on their health and welfare. Therefore, alternative systems providing early nutrition, for instance by hatching eggs in a poultry...

  4. Motivation for feeding in broiler breeder pullets fed different types of restricted high-fibre diets

    Contributor(s):: Riber, Anja B., Tahamtani, Fernanda M.

    High-fibre diets have been suggested as alternative feeding strategies that potentially may alleviate the hunger felt by feed-restricted broiler breeders and fulfil their behavioural need for feeding behaviour. The aim of the present study was to investigate the effects of four dietary...

  5. The effect of qualitative feed restriction in broiler breeder pullets on fear and motivation to explore

    Contributor(s):: Tahamtani, Fernanda M., Riber, Anja B.

    Restrictively fed broiler breeders are known to have increased motivation to explore and reduced fearfulness because hunger increases the motivation to search for and to acquire food, forcing the birds to face and engage with aversive stimuli that they would otherwise avoid. The aim of this study...

  6. Behavioral and hematological responses of broiler chickens administered with betaine and ascorbic acid during hot-dry season

    Contributor(s):: Egbuniwe, Ifeanyichukwu C., Ayo, Joseph O., Kawu, Mohammed U., Mohammed, Aliyu

    Heat stress is a major problem in poultry production in tropical regions. Assessing the impact of thermally stressful environmental conditions on the welfare of broiler chickens is of great importance. Behavioral responses in a novel environment and hematology of broiler chickens administered...

  7. Effects of growth pattern and dietary protein level during rearing on feed intake, eating time, eating rate, behavior, plasma corticosterone concentration, and feather cover in broiler breeder females during the rearing and laying period

    Contributor(s):: van Emous, R. A., Kwakkel, René, van Krimpen, Marinus, Hendriks, Wouter

    An experiment was conducted to evaluate the effect of growth patterns (GP) and dietary crude protein levels (CP) during rearing (2–22 weeks of age) on feed intake, eating time, eating rate, behavior, plasma corticosterone concentration, and feather cover in broiler breeder females during the...

  8. Conditioned place preference or aversion as animal welfare assessment tools: Limitations in their application

    Contributor(s):: Dixon, Laura M., Sandilands, Vicky, Bateson, Melissa, Brocklehurst, Sarah, Tolkamp, Bert J., D’Eath, Rick B.

    Conditioned place preference (CPP) or aversion (CPA) methods are potentially useful tools in animal welfare assessment because they permit measurement of the reinforcing properties of a stimulus in the absence of the stimulus itself. We used CPP/CPA techniques in a series of experiments to assess...

  9. Quantifying hungry broiler breeder dietary preferences using a closed economy T-maze task

    Contributor(s):: Buckley, Louise A., Sandilands, Victoria, Tolkamp, Bert J., D’Eath, Richard B.

    This study aimed to identify hungry broiler breeders (n=12) preferences for quantitative (control) or qualitative dietary restriction (QDR) in a closed economy environment. The QDR option was either 3g calcium propionate/kg total feed (n=6) or 300g oat hulls/kg total feed (n=6). Quantitatively...

  10. Feeding, foraging, and feather pecking behaviours in precision-fed and skip-a-day-fed broiler breeder pullets

    Contributor(s):: Girard, Ms Teryn E., Zuidhof, Martin J., Bench, Clover J.

    Broiler breeder chickens are feed-restricted to control growth and maximize chick production. Feed restriction creates welfare concerns as conventional skip-a-day feeding can increase activity levels and oral stereotypies during the rearing period. A precision feeding system has been developed to...

  11. Aggression and social rank fluctuations in precision-fed and skip-a-day-fed broiler breeder pullets

    Contributor(s):: Girard, Teryn E., Zuidhof, Martin J., Bench, Clover J.

    In broiler breeders, conventional skip-a-day feeding leads to hunger-related aggression. As an alternative, a precision feeding system was developed to provide small meals to individual birds multiple times each day, sheltered from competition. Two objectives investigated whether: 1) aggression...

  12. Relative preference for wooden nests affects nesting behaviour of broiler breeders

    Contributor(s):: van den Oever, Anna C. M., Rodenburg, T. Bas, Bolhuis, J. Elizabeth, van de Ven, Lotte J. F., Hasan, Md Kamrul, van Aerle, Stephanie M. W., Kemp, Bas

    Optimising nest design for broiler breeders has benefits for both the animals and the producers. The welfare of the hens will increase by providing preferred housing, while also reducing eggs laid outside the nests. These floor eggs cause economic losses by compromised automatic egg collection...

  13. 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...

  14. Effects of carprofen, meloxicam and butorphanol on broiler chickens' performance in mobility tests

    Contributor(s):: Hothersall, B., Caplen, G., Parker, R., Nicol, C. J., Waterman-Pearson, A. E., Weeks, C. A., Murrell, J. C.

    Lame broiler chickens perform poorly in standardised mobility tests and have nociceptive thresholds that differ from those of non-lame birds, even when confounding factors such as differences in bodyweight are accounted for. This study investigated whether these altered responses could be due to...

  15. The contribution of broiler chicken welfare certification at farm level to enhancing overall animal welfare: the case of Brazil

    Contributor(s):: Souza, A. P. O., Molento, C. F. M.

    The intensification of farm animal welfare debate has led to an increasing number of certification schemes covering this issue; however, there are concerns about the contribution of these schemes in improving welfare. The aims of this study were to identify certification schemes for broiler...

  16. Effects of catching and transportation versus pre-slaughter handling at the abattoir on the prevalence of wing fractures in broilers

    Contributor(s):: Kittelsen, K. E., Granquist, E. G., Vasdal, G., Tolo, E., Moe, R. O.

    Fractures occurring in conscious broiler chickens are painful and severely compromise animal welfare. The aim of this study was to investigate the effects of pre-slaughter handling procedures on the frequency of wing fractures. Wings were examined for fractures in 11,609 broilers, from 12...

  17. Slow and steady wins the race? No signs of reduced welfare in smaller broiler breeder hens at four weeks of age

    Contributor(s):: Lindholm, C., Calais, A., Jonsson, J., Yngwe, N., Berndtson, E., Hult, E., Altimiras, J.

    Broiler breeder chickens are commonly reared under strict feed-restriction regimes to reduce obesity-induced health and fertility problems during adult life, and are assumed to experience a reduced welfare due to the resulting hunger. In these conditions, feed competition could influence the...

  18. Effects of different dietary protein levels during rearing and different dietary energy levels during lay on behaviour and feather cover in broiler breeder females

    Contributor(s):: Emous, R. A. van, Kwakkel, R., Krimpen, M. van, Hendriks, W.

    An experiment was conducted to determine the effects of different dietary protein levels during rearing and different dietary energy levels during lay on behaviour and feather cover in broiler breeder females. A 2*3*2 factorial arrangement of treatments was used. A total of 2880 Ross 308...

  19. Behavioral changes and feathering score in heat stressed broiler chickens fed diets containing different levels of propolis

    Contributor(s):: Mahmoud, U. T., Abdel-Rahman, M. A. M., Darwish, M. H. A., Applegate, T. J., Cheng, H.

    This experiment was conducted to evaluate the effects of dietary supplementation of green Brazilian propolis on behavioral patterns and feather condition of heat stressed broiler chickens. Five hundred and four (504) male Ross 708 broiler chicks at 15-day old were randomly allotted to six dietary...

  20. Feed-restricted broiler breeders: state-dependent learning as a novel welfare assessment tool to evaluate their hunger state?

    Contributor(s):: Buckley, L. A., Sandilands, V., Hocking, P. M., Tolkamp, B. J., D'Eath, R. B.

    This paper reports three experiments that aimed to validate the use of state-dependent learning (SDL) as a novel welfare assessment tool to evaluate the hunger state of feed-restricted broiler breeders. In each experiment, birds alternated every 2 days between two food rations: quantitative feed...