Controlled atmosphere (gas) stunning (CAS) has the potential to improve the welfare of poultry at slaughter but there is a lack of consensus about which gas mixtures are most humane. The aim of this study was to evaluate the welfare consequences of different gas stunning approaches. Individual broilers were exposed to gas mixtures capable of inducing unconsciousness and euthanasia while their behavioural, cardiac, respiratory and neurophysiological responses were measured simultaneously. The approaches investigated included anoxia (N2 or Ar with < 2% residual O2), hypercapnic anoxia (30% CO2 in Ar, 40% CO2 in N2) and a biphasic method (40% CO2, 30% O2, 30% N2 for 60 s followed by 80% CO2 in air). Evaluation of the welfare implications of each approach centred on the likelihood of them inducing negative states or experiences during the conscious phase. Hypercapnic mixtures were associated with strong respiratory responses, while anoxic mixtures induced vigorous wing flapping. Electroencephalogram analysis using the correlation dimension (a non-linear measure of complexity) suggested that anoxic wing flapping occurred during periods in which a form of consciousness could not be excluded. Hypercapnic hyperoxygenation (biphasic approach) exacerbated respiratory responses but eliminated the possibility of vigorous behavioural responses occurring during a conscious phase. The relative importance of respiratory discomfort versus the potential to induce significant distress due to convulsive wing flapping and associated trauma is a matter for debate. We argue that respiratory discomfort is unpleasant but may be preferable to the risk of vigorous wing flapping and associated injury while conscious in poultry during CAS.

Hare coursing is a widespread but controversial activity. In an attempt to reduce hare mortality and mitigate the activity's impact on hare welfare, the Irish Coursing Club introduced measures including the compulsory muzzling of dogs in 1993. However, the efficacy of these measures remained the subject of heated debate. Official records, corroborated by independent video evidence, were used to assess the fate of individual Irish hares (Lepus timidus hibernicus) during coursing events from 1988-2004. Muzzling dogs significantly reduced levels of hare mortality. In courses using unmuzzled dogs from 1988/89-1992/93 mean hare mortality was 15.8%, compared to 4.1% in courses using muzzled dogs from 1993/94-2003/04. Further reductions in mortality could not be accounted for by muzzling dogs, supporting the efficacy of other factors such as improved hare husbandry. The duration of the head start given to the hare prior to the release of the dogs significantly affected the outcome of the course. Hares that were killed had head starts of greater duration than those that were chased but survived, suggesting the former may have been slower. The selection of hares by assessment of their running ability may provide means to reduce hare mortality during courses further. Our findings support the efficacy of measures taken to mitigate the impact of coursing on individual hares. However, it is necessary to evaluate the impact of removing hares from the source population and of returning coursed hares to the wild before the wider impact of coursing on wild hare populations can be determined.

Dogs can be held temporarily or permanently in kennels for a number of reasons, not necessarily for their own benefit. Although restrictive environments have been associated with poor welfare, priorities for research and change cannot be understood unless the various aspects of the kennel environment are appreciated separately. This review critically evaluates the experimental research regarding the physical, social, sensory, occupational, nutritional and psychological aspects of the kennel environment and their effects on canine welfare, with a view to providing a consolidated report on our current state of knowledge on this subject. However, the lack of within-dog, single manipulations and a focus on quantitative measures affects the ability to make valid conclusions about the welfare benefits of several aspects, including social housing, kennel size and location. Despite these criticisms, the evidence for the positive benefits of group housing is strong. There is also considerable evidence for the benefits of positive human contact particularly on sociability and stress responses in other situations. Surprisingly few studies have looked at other forms of enrichment and even less have considered the potential for the kennel to be over-stimulating in an auditory, olfactory and visual sense. Such topics are suggested as priorities for further research, in addition to ways of minimising aggression in group housing and the effect of establishment of predictability on adjustment to kennelling.

Sodium fluoroacetate (1080) is widely used for the control of vertebrate pests in Australia. While the ecological impact of 1080 baiting on non-target species has been the subject of ongoing research, the animal welfare implications of this practice have received little attention. Literature relevant to the humaneness of 1080 as a vertebrate pest control agent is reviewed in this paper. Previous authors have largely concentrated on the perception of pain during 1080 toxicosis, giving limited attention to other forms of distress in their assessments. Authors who suggest that 1080 is a humane poison largely base their conclusions on the argument that convulsive seizures seen in the final stages of 1080 toxicosis indicate that affected animals are in an unconscious state and unable to perceive pain. Other authors describe awareness during seizures or periodic lucidity that suggests central nervous system (CNS) disruption cannot be assumed to produce a constant pain-free state. Some literature report that 1080 poisoning in humans is painless and free of distress, but this is contradicted by other clinical studies. Using available data an attempt is made to reassess the humaneness of 1080 using the following criteria: speed and mode of action, appearance and behaviour of affected animals, experiences of human victims, long-term effect on survivors, and welfare risk to non-target animals. It is concluded that sodium fluoroacetate should not be considered a humane poison, and there is an urgent need for research into improving the humaneness of vertebrate control methods in Australia.

Annual statistics for transport and lairage mortality were used to investigate factors leading to pre-slaughter mortality in Danish pigs. A subset of material from 2002, amounting to 17.8 million pigs, was used for a more detailed study of the effect of producer, haulier, abattoir and transport distance (< 100, 100–200 and > 200 km) on transport mortality. Total mortality was reduced eight-fold during the period that the halothane gene was being removed from the pig population, from 0.12% in the early 1980s to 0.016% in 2002. Overall, transport mortality increased with higher temperature and lower relative humidity/wind speed but a combination of temperature and humidity that fell into the danger zone, as defined by the Livestock Weather Safety Index, almost doubled transport mortality from a level of about 0.016 to 0.031%. Multiple deaths on the same transport were also more frequent during the hotter months of the year. Transport mortality increased with increasing transport distance, especially during warmer weather. Producers, hauliers and abattoirs had widely varying transport mortality. Eighty-nine percent of producers, 11% of hauliers and 86% of farmer transports had no mortality at all. Producers and farmer transports supplying less than 1,000 pigs had a higher transport mortality than those supplying more pigs, whereas it was independent of supply for hauliers. There were many confounding factors in this work, as producers, hauliers and abattoirs are linked and trends over the years can be affected not only by changes in the genetic makeup of the pig population but also by improvements in handling. Nevertheless, the study shows that internal environment within the vehicle and transport pattern, including the time the vehicle is stationary, are important factors for mortality and that particular efforts should be made if weather forecasts predict dangerous combinations of temperature and humidity. It is suggested that efforts to further reduce transport mortality in Danish pigs should concentrate especially on these factors and include a routine follow-up of all multiple deaths to pinpoint specific factors leading to mortality.

Chinchilla lanigera intensive breeding programmes are affected by an abnormal repetitive behaviour called ‘fur-chewing’, yet the aetiology is still unknown and little scientific work has been published on this condition. Recent studies have supported the idea that fur-chewing is a stress-related behaviour. In the present study, we used a questionnaire survey in order to: 1) describe general aspects on the epidemiology of fur-chewing in Argentinian farms, and 2) identify which management and/or environmental factors within the breeding facilities may be influencing the occurrence of fur-chewing. The survey consisted of 28 questions focused on farm characteristics, environmental variables and husbandry routines, and was distributed to Argentinian chinchilla farmers. All quantitative variables were tested in a multiple logistic regression model. The mean incidence of fur-chewing was 4.32 ± 0.37% (n = 107 farms). Variables negatively related to fur-chewing were the breeder experience in the activity, the total volume of the facility, and the number of wood shaving changes per week. Positive relationships were found for space index, number of rooms in the facility and presence of different rooms for fur production and reproduction. Other tendencies suggested that farms with the presence of external sound disturbance nearby had higher incidence levels. Also, we detected a tendency towards lower numbers of affected animals with an increment in the provision of dusting baths per week. Finally, results suggested a female prevalence in the development of the behaviour.

Twenty horses were paired for age, sex and breed and placed into one of two groups. The horses in Group A (control) were reinforced using only negative reinforcement (NR) while those in group B (treatment) were reinforced with both positive reinforcement (PR) and NR concurrently. All horses were shaped for the halt response while being driven in long-reins over a period of 5 consecutive days. On day I, all horses were given a baseline test of 20 random halts while being long-reined in an indoor arena. On days 2-4, the shaping of the halt response continued with horses being reinforced according to the group to which they had been allocated. On day 5 of testing the baseline test was repeated (final test). During the baseline and final tests, behavioural responses and accuracy of completion of the halt response were recorded. Heart rates were recorded continuously during testing. One-way analysis of variance in randomised blocks and analysis of covariance using baseline data as a covariate showed no effect on latency to halt. However, horses reinforced with both NR and PR shook their heads vertically less and were more likely to lick their lips than those reinforced with NR only. There was also a trend for an increase in roundness of outline of the horses that were reinforced with both PR and NR. These results suggest that the implementation of PR effectively into equitation training may improve the welfare of the horse.

An adaptive conjoint analysis was used to evaluate stakeholders’ opinion of welfare indicators for ship-transported sheep and cattle, both onboard and in pre-export depots. In consultations with two nominees of each identified stakeholder group (government officials, animal welfare representatives, animal scientists, stockpersons, producers/pre-export depot operators, exporters/ship owners and veterinarians), 18 potential indicators were identified. Three levels were assigned to each using industry statistics and expert opinion, representing those observed on the best and worst 5% of voyages and an intermediate value. A computer-based questionnaire was completed by 135 stakeholders (48% of those invited). All indicators were ranked by respondents in the assigned order, except fodder intake, in which case providing the amount necessary to maintain bodyweight was rated better than over or underfeeding, and time in the pre-export assembly depot, in which case 5 days was rated better than 0 or 10 days. The respective Importance Values (a relative rating given by the respondent) for each indicator were, in order of declining importance: mortality (8.6%), clinical disease incidence (8.2%), respiration rate (6.8%), space allowance (6.2%), ammonia levels (6.1%), weight change (6.0%), wet bulb temperature (6.0%), time in assembly depot (5.4%), percentage of animals in hospital pen (5.4%), fodder intake (5.2%), stress-related metabolites (5.0%), percentage of feeding trough utilised (5.0%), injuries (4.8%), percentage of animals able to access food troughs at any one time (4.8%), percentage of animals lying down (4.7%), cortisol concentration (4.5%), noise (3.9%), and photoperiod (3.4%). The different stakeholder groups were relatively consistent in their ranking of the indicators, with all groups nominating the same top two and at least five of the top seven indicators. Some of the top indicators, in particular mortality, disease incidence and temperature, are already recorded in the Australian industry, but the study identified potential new welfare indicators for exported livestock, such as space allowance and ammonia concentration, which could be used to improve welfare standards if validated by scientific data. The top indicators would also be useful worldwide for countries engaging in long distance sea transport of livestock.

This paper reports results from two workshops held in York, England that investigated public attitudes towards the welfare of broiler chickens. At the outset the majority of participants admitted that they knew little about how broiler chickens are reared and were shocked at some of the facts presented to them. Cognitive mapping and aspects of Q methodology were used to reveal the range of variables that participants believed affected chicken welfare, the causal relationships between those variables, and what variables were considered most and least important. While some participants focused on the importance of meeting basic needs such as access to food, water, light and ventilation, others highlighted the role of welfare regulations and public opinion. Factor analysis of the results from a ranking exercise identified two factor groups, ‘Factor one; the bigger picture’ and ‘Factor two; basic animal needs’. The findings demonstrate that some members of the public are both interested in learning about how their food is produced and concerned about the conditions faced by broiler chickens. Some are able to see clear links between public opinion and the welfare of farm animals; an important connection if consumer behaviour is to contribute towards improving animal welfare.

Aversion to the dip-lift stunning system and to the inhalation of 70 and 90% carbon dioxide was assessed in 18 halothane-free (NN) and 14 heterozygous halothane (Nn) slaughter weight pigs using aversion learning techniques and behavioural studies in an experimental slaughterhouse. Pigs were subjected to the treatments individually. When the dip lift system contained atmospheric air, the proportion of pigs that entered the crate voluntarily increased on subsequent days, indicating that pigs habituate to the stunning system. Based on the number of attempted retreats, for the first descent into the well with atmospheric air, Nn pigs were more reactive than NN pigs. On repeating the descent, Nn pigs showed greater habituation to the procedure. When the pit contained (either 70 or 90%) carbon dioxide, the time taken to enter the crate and the incidence of pigs that attempted to retreat increased on subsequent days, indicating aversion to the carbon dioxide concentrations. The aversion was higher when the stunning system contained 90 as opposed to 70% carbon dioxide due possibly to increased irritation of the nasal mucosal membranes and more severe hyperventilation. Conversely, a decrease in the concentration of carbon dioxide increased the time to loss of posture and, therefore, lengthened the perception of the aversive stimulus till the animal lost consciousness. These results suggest that stunning with carbon dioxide is not free from pain or distress. The degree of aversion depends on the carbon dioxide concentration. Therefore, if higher concentrations of carbon dioxide are recommended for rapid induction of anaesthesia, it needs to be assumed that this may be more aversive to pigs.

This brief guide (see details below) gives an overview of Animal Ethics Committees (AECs) and the role of the lay member in these. In particular, it seeks to reassure concerns that lay members, especially those lacking experience in the area, may have about their importance and legitimacy in the ethical review process. After detailing the role of AECs under New Zealand legislation as it relates to the use of animals in research, testing and teaching, the guide then highlights four factors: independence, public representation, animal advocacy and the possession of a fresh perspective as the most important elements contributed by lay members to the review process. What follows is the now customary explanation of the principle of the 3Rs and how they underline the human use of animals in science and teaching, and then helpful suggestions as to questions and issues that a lay member should consider when assessing a proposal. Finally, a short glossary of terms and references are given. As a guide, it acts as a useful introduction for lay members, but anyone seeking to fulfill this role to the best of their abilities will want to utilise the references given to better understand the issues and concerns more deeply.

“Stockmanship is the single most important influence on the welfare of farm animals”, thus begins this report from the UK's Farm Animal Welfare Council into the role and scope of stockmanship, as it pertains to ensuring high standards of animal welfare, and the provision of effective education and training for livestock farmers and stockmen within the UK.

The Welfare of Farmed Animals (England) Regulations 2007 have now been approved by the UK Parliament and came into force on the 1st October 2007. The Regulations cover all farmed animals in England and have been made under the Animal Welfare Act 2006. The 2007 Regulations replace the previous Welfare of Farmed Animals (England) Regulations 2000 (as amended), and additionally Part I of the Agriculture (Miscellaneous Provisions) Act 1968 has been repealed. The changes bring farmed animal legislation into line with the Animal Welfare Act 2006.

Within the UK the Home Office sets standards for the care accommodation of animals used in research through inspection and through codes of practice.

The Farm Animal Welfare Council (FAWC) is an independent advisory body tasked with reviewing the welfare of UK farm animals and informing the Government on any legislative or other changes that may be necessary. In 2004 FAWC published a 43 page report on welfare implications relating to animal breeding and animal breeding technologies. FAWC believes that breeding practices have the potential to both positively and negatively affect farm animal welfare and that it is an area requiring consideration of both the needs of animals, to ensure their good welfare, and the needs of producers, to remain viable in a highly competitive and global market.

Animal health is only a part of animal welfare but still a very important part, and one which has been firmly brought home to livestock industries in recent years with the re-emergence of diseases such as avian influenza, foot and mouth and, more recently, bluetongue.