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  1. Influence of egg oiling on colony presence of ring-billed gulls

    Contributor(s):: DeVault, Travis L., Schmidt, Paige M., Pogmore, Fred E., Gobeille, John, Belant, Jerrold L., Seamans, Thomas W.

  2. Do artificial nests simulate nest success of greater sage-grouse?

    Contributor(s):: Dinkins, Jonathan B., Conover, Michael R., Mabray, Scott T.

  3. Farmer attitudes to injurious pecking in laying hens and to potential control strategies

    Contributor(s):: Palczynski, L. J., Buller, H., Lambton, S. L., Weeks, C. A.

    Farmers' recognition of health and welfare problems, and their responses to related intervention programmes, such as those to reduce injurious pecking in hens, directly influence the welfare of animals in their care. Changing those responses can be achieved through a re-positioning of social...

  4. Tree cover and injurious feather-pecking in commercial flocks of free-range laying hens: a follow up

    Contributor(s):: Bright, A., Gill, R., Willings, T. H.

    Injurious feather-pecking in non-cage systems is a serious economic and welfare concern for the egg-producing industry. This study presents results from data of over 1,000 flocks from producers who supplied free-range eggs to McDonald's Restaurants Ltd UK between 2008 and 2013. These producers...

  5. Consumer attitudes to injurious pecking in free-range egg production

    Contributor(s):: Bennett, R. M., Jones, P. J., Nicol, C. J., Tranter, R. B., Weeks, C. A.

    Free-range egg producers face continuing problems from injurious pecking (IP) which has financial consequences for farmers and poor welfare implications for birds. Beak-trimming has been practised for many years to limit the damage caused by IP, but with the UK Government giving notification that...

  6. Mate choice, maternal investment and implications for ostrich welfare in a farming environment

    Contributor(s):: Bonato, M., Cherry, M. I., Cloete, S. W. P.

    At present, the ostrich industry is inefficient, on account of being characterised by inadequate egg production, high embryo mortality, poor chick survival and suboptimal growth rates. However, as ostrich farming commenced only in the mid 19th century in South Africa, farmed ostriches have had a...

  7. Effects of variation in nest curtain design on pre-laying behaviour of domestic hens

    Contributor(s):: Ringgenberg, N., Frohlich, E. K. F., Harlander-Matauschek, A., Toscano, M. J., Wurbel, H., Roth, B. A.

    Laying hens in loose-housing systems select a nest daily in which to lay their eggs among many identical looking nests, they often prefer corner nests. We investigated whether heterogeneity in nest curtain appearance - via colours and symbols - would influence nest selection and result in an even...

  8. Nest choice in laying hens: effects of nest partitions and social status

    Contributor(s):: Ringgenberg, N., Frohlich, E. K. F., Harlander-Matauschek, A., Toscano, M. J., Wurbel, H., Roth, B. A.

    Nest choice in loose-housed laying hens is influenced by nest characteristics, position and social factors. We examined the relative preference of laying hens for two group-nests differing in the presence or absence of a partition in the middle of the nest and whether this was influenced by...

  9. An ethological approach to determining housing requirements of gamebirds in raised laying units

    Contributor(s):: Matheson, S. M., Donbavand, J., Sandilands, V., Pennycott, T., Turner, S. P.

    Each year, the UK rears around 20-30 million pheasants and 3-6 million red-legged partridges for shooting purposes. However, welfare organisations and some members of the gamebird industry itself have raised concerns about the use of raised laying units for breeding gamebirds. Although the...

  10. Evidence of competition for nest sites by laying hens in large furnished cages

    Contributor(s):: Hunniford, M. E., Torrey, S., Bedecarrats, G., Duncan, I. J. H., Widowski, T. M.

    Furnished cages are designed to accommodate behaviour considered important to laying hens, particularly nesting behaviour. Few researchers have studied the degree of competition for nest sites or the extent to which the amount of nest space affects nesting behaviour in large furnished cages. We...

  11. The ticking clock: addressing farm animal welfare in emerging countries

    Contributor(s):: Keyserlingk, M. A. G. von, Hotzel, M. J.

    Over the last decade many emerging economies, and in particular Brazil, have established themselves as major players in global food animal production. Within these countries much of the increase in food animal production has been achieved by the adoption of intensive housing systems similar to...

  12. Use of dynamic and rewarding environmental enrichment to alleviate feather pecking in non-cage laying hens

    Contributor(s):: Daigle, C. L., Rodenburg, T. B., Bolhuis, J. E., Swanson, J. C., Siegford, J. M.

    Feather pecking (FP) can cause feather loss, resulting in physical injuries, which may lead to cannibalism. FP appears to be a redirection of foraging behavior, which intensifies when hens have difficulty coping with stress and fear. Dynamic environmental enrichment (EE) may allow expression of...

  13. Zoonoses, public health, and the backyard poultry flock

    Contributor(s):: Grunkemeyer, V. L.

  14. Does nest size matter to laying hens?

    Contributor(s):: Ringgenberg, N., Frohlich, E. K. F., Harlander-Matauschek, A., Wurbel, H., Roth, B. A.

    Laying hens in loose housing systems have access to group-nests which provide space for several hens at a time to lay their eggs. They are thus rather large and the trend in the industry is to further increase the size of these nests. Though practicality is important for the producer, group-nests...

  15. Operationalizing ethics in food choice decisions

    Contributor(s):: Hepting, D. H., Jaffe, J., Maciag, T.

    There is a large gap between attitude and action when it comes to consumer purchases of ethical food. Amongst the various aspects of this gap, this paper focuses on the difficulty in knowing enough about the various dimensions of food production, distribution and consumption to make an ethical...

  16. The role of genes, epigenetics and ontogeny in behavioural development

    Contributor(s):: Rodenburg, T. B.

    This review focuses on the role of genes, epigenetics and ontogeny in behavioural development of animals. The behavioural characteristics of an individual are determined by its genes and by its physical and social environment. Not only the individual's early life and current environment are of...

  17. Use of outdoor ranges by laying hens in different sized flocks

    Contributor(s):: Gebhardt-Henrich, S. G., Toscano, M. J., Frohlich, E. K. F.

    In studies assessing outdoor range use of laying hens, the number of hens seen on outdoor ranges is inversely correlated to flock size. The aim of this study was to assess individual ranging behavior on a covered (veranda) and an uncovered outdoor run (free-range) in laying hen flocks varying in...

  18. Natural incubation patterns and the effects of exposing eggs to light at various times during incubation on post-hatch fear and stress responses in broiler (meat) chickens

    Contributor(s):: Archer, G. S., Mench, J. A.

    Although environmental conditions during incubation can affect poultry welfare, one factor often overlooked in the commercial incubation of eggs is light. Light stimulation during embryonic development is now known to affect the physiology and behavior of broiler (meat) chickens post-hatch, but...

  19. Behavioural testing to determine differences between coping styles in grey parrots ( Psittacus erithacus erithacus) with and without feather damaging behaviour

    Contributor(s):: Zeeland, Y. R. A. van, Aa, M. M. J. A. van der, Vinke, C. M., Lumeij, J. T., Schoemaker, N. J.

  20. Changes in position and quality of preferred nest box: effects on nest box use by laying hens

    Contributor(s):: Riber, A. B., Nielsen, B. L.