Suchergebnisse

No room on the agenda -- Seduced by words -- The trouble with anthropomorphism -- Why consciousness is harder than you think -- Consciousness unexplained -- Emotional turmoil -- Animal welfare without consciousness -- The two pillars of animal welfare -- What animals want -- Animal welfare for a small planet

The framework proposed by Crump et al. still leaves much doubt about whether invertebrates such as crabs are sentient. For example, many complex behaviours - even in humans - occur without sentience. Also, simple machines could easily meet all of Crump et al.'s eight proposed criteria for sentience. Acknowledging the limitations of what we currently know about sentience is important both for formulating legislation correctly and for advancing scientific understanding of this most puzzling of biological phenomena.

Although linked historically by Rowan et al., the scientific study of animal sentience and political campaigns to improve animal welfare should be kept separate, for at least two reasons. First, the separation makes it clear that standards of evidence acceptable for ethical or political decisions on animal welfare can be lower than those required for a rigorously scientific approach to animal sentience. Second, it helps to avoid confirmatory bias in the form of giving undue weight to results that are in line with pre-conceived ideas and political views.

The framework proposed by Crump et al. still leaves much doubt about whether invertebrates such as crabs are sentient. For example, many complex behaviours - even in humans - occur without sentience. Also, simple machines could easily meet all of Crump et al.'s eight proposed criteria for sentience. Acknowledging the limitations of what we currently know about sentience is important both for formulating legislation correctly and for advancing scientific understanding of this most puzzling of biological phenomena.

Although linked historically by Rowan et al., the scientific study of animal sentience and political campaigns to improve animal welfare should be kept separate, for at least two reasons. First, the separation makes it clear that standards of evidence acceptable for ethical or political decisions on animal welfare can be lower than those required for a rigorously scientific approach to animal sentience. Second, it helps to avoid confirmatory bias in the form of giving undue weight to results that are in line with pre-conceived ideas and political views.

Does animal welfare have a place in sustainable farming, or do the demands of a rising human population and the threat of climate change mean that the interests of animals must be put aside? Can we improve the way we keep animals and still feed the world - or is it a choice between ethics and economics? The aim of this book is to challenge the "them-and-us" thinking that sets the interests of humans and farm animals against each other and to show that to be really "sustainable," farming needs to include, not ignore, animal welfare. The authors of this remarkable book come from a diversity of b

International audience ; Abstract 1. Feather pecking is one of the major problems facing the egg industry in non-cage systems and is set to become even more of an issue with the European Union ban on the keeping of laying hens in barren battery cages which comes into force in 2012 and a UK ban on beak-trimming in 2011. Reducing feather pecking without resorting to beak treatment is an important goal for the poultry industry. 2. We report here a longitudinal study that included over 335,500 birds from 22 free range and organic laying farms. Accelerated failure time models and proportional hazards models were used to examine the effects of a wide range of factors (management, environment and bird) on development of substantial feather damage in lay. Particular emphasis was placed on risk factors during rear and on practices that could feasibly be changed or implemented. 3. The age at which a flock exhibits substantial feather damage could be predicted both by factors in the environment and by early symptoms in the birds themselves. Factors that were associated with earlier onset of severe feather damage included the presence of chain feeders, raised levels of carbon dioxide and ammonia, higher sound and light levels, particularly in younger birds. Increased levels of feather damage (even very slight) in birds at 17-20 weeks of age was also highly predictive of the time of onset of severe feather damage during lay. Raised levels of feed intake also indicated that a flock was at risk of early severe feather damage. 4. Birds that stayed on the same farm for rear and lay showed later onset of serious feather damage than those that experienced a change in farm from rear to lay. However, an increased number of changes between rear and lay (e.g. feeder type, drinker type, light levels etc) was not associated with earlier onset of serious feather damage. Further research needs to be done on the role of the transition from rear to lay as a risk factor for FP in lay. Keywords Feather pecking, alternate systems, risk ...