Much environmental enrichment for laboratory animals is intended to enhance animal welfare and normalcy by providing stimulation to reduce ‘boredom’. Behavioural manifestations of boredom include restless sensation-seeking behaviours combined with indicators of sub-optimal arousal. Here, we explored whether these signs could be reduced by extra daily play opportunity in laboratory ferrets (Mustela putorius furo). Specifically, we hypothesised that playtime would reduce restlessness, aggression, sensation-seeking and awake drowsiness, even 24 h later in the home-cage. Female ferrets (n = 14) were group-housed in enriched multi-level cages. Playtime involved exploring a room containing a ball pool, paper bags, balls containing bells, and a familiar interactive human for 1 h. This was repeated on three consecutive mornings, and on the fourth, home-cage behaviour was compared between ferrets which had experienced the playtime treatment versus control cage-mates which had not. Their investigation of stimuli (positive = mouse odour or ball; ambiguous = empty bottle or tea-strainer; and negative = peppermint or bitter apple odour) was also recorded. We then swapped treatments, creating a paired experimental design. Ferrets under control conditions lay awake with their eyes open and screeched significantly more, but slept and sat/stood less, than following playtime. They also contacted negative and ambiguous stimuli for significantly longer under control conditions than following playtime; contact with positive stimuli showed no effects. Attempts to blind the observer to treatments were unsuccessful, so replication is required, but the findings suggest that playtime may have reduced both sub-optimal arousal and restless sensation-seeking behaviour, consistent with reducing boredom.

Recent scientific findings indicate that consciousness is a fundamental biological adaptation. The known brain correlates of consciousness appear to be phylogenetically ancient, going back at least to early mammals. In all mammals, alertness and sensory consciousness are required for the goal-directed behaviours that make species survival and reproduction possible. In all mammals, the anatomy, neurochemistry and electrical activity of the brain in alert states show striking similarities.

After more than seven decades of cumulative discoveries about waking and sensory consciousness, we have not yet found any fundamental differences between humans and other mammals. Species differences such as the size of neocortex seem to be irrelevant to the existence of alertness and sensory consciousness, though different mammals obviously specialize in different kinds of sensory, cognitive and motor abilities.

Sceptics sometimes claim that objective evidence for consciousness tells us little about subjective experience, such as the experience of conscious pain. Scientifically, however, plausible inferences are routinely based on reliable and consistent patterns of evidence. In other humans, we invariably infer subjective experiences from objective behavioural and brain evidence - if someone yells ‘Ouch!’ after striking a finger with a hammer, we infer that they feel pain. The brain and behavioural evidence for subjective consciousness is essentially identical in humans and other mammals. On the weight of the objective evidence, therefore, subjective experience would seem to be equally plausible in all species with human-like brains and behaviour. Either we deny this experience to other humans (which is rarely done) or, to be consistent, we must also attribute it to other species that meet the same objective standards. It seems that the burden of proof for the absence of subjectivity in mammals should be placed on the sceptics.

Traditional battery cages for laying hens will soon be banned in the EU but the increased risk of feather pecking (FP) hampers the adoption of alternative housing systems. FP can cause injury and lead to cannibalism and the painful death of target birds. Current management practices (beak trimming, low light) have associated problems. In a joint European project we sought alternative solutions. In our study of associated traits, birds from a line showing low (LFP) rather than high feather pecking (HFP) exhibited greater sociality (motivation to be near companions) and a passive ‘coping’ style. High sociality and passivity were also negatively associated with FP in adults. These findings may guide future breeding programs. Trimming hens’ feathers to mimic the results of FP elicited pecking and some cannibalism, even by birds that had previously shown no FP. Social transmission of gentle but not severe FP occurred when LFP and HFP birds were housed together. Gentle pecking could conceivably lead to severe FP. We then examined chickens’ pecking preferences to guide environmental enrichment strategies. Bunches of string elicited substantially greater interest than other stimuli, including feathers, and white or yellow string was the most attractive. The birds’ manipulation of the string resembled preening. Incorporating silver beads or moving the devices reduced pecking. String sustained lengthy interest, reduced FP in HFP birds, and decreased feather damage in caged layers on a commercial farm. String offers effective, affordable and practicable environmental enrichment. The integrated application of appropriate environmental and genetic strategies is likely to attenuate the expression of FP and its harmful consequences.

This study assessed the effects of increasing dietary fibre levels in concentrate rations and providing access to straw in racks on the welfare of pregnant sows housed in small static groups. In a 2 × 2 factorial design experiment, 128 Large White × Landrace pregnant sows were offered one of two diets: (i) High fibre diet with 9% crude fibre, or (ii) Control diet with 4.5% CF, and one of two levels of access to a foraging substrate: (i) access to straw in racks or (ii) no straw. The study was replicated eight times using groups of four sows, and treatment periods lasted four weeks. Sows were housed in pens with voluntary cubicles and a slatted exercise area and were offered a wet diet twice a day. Back-fat levels were measured before sows were mixed into groups at 28 days post partum, and four weeks later. Aggressive interactions were recorded on the day of mixing, and injury scores were recorded one week post mixing. Scan sampling was used to collect data on general activity, posture and location of the sows, and on sham-chewing and bar-biting behaviours across the treatment period. In addition, detailed focal observations were carried out on all sows across the treatment period. Straw usage was also recorded. There were no treatment effects on changes in back-fat levels over the treatment period. Treatments had no effect on post-mixing aggression or on injury scores. However, focal observations showed that sows with access to straw were involved in fewer bouts of head-thrusting over the treatment period. Control diet sows spent more time inactive than sows on the high fibre diet, however high fibre diet sows spent more time lying with eyes closed than sows on the control diet. Sows on the high fibre diet with access to straw showed less sham-chewing and bar-biting behaviour than sows in other treatments. These results show that although a diet containing 9% crude fibre promoted resting behaviour, it was necessary to combine it with access to straw to reduce stereotypic behaviour of sows in small static groups.

The objective of this paper is to analyse the effects of three different stocking densities on the production, stress and fear parameters of female broilers during a 46-day production period. Chickens were randomly distributed among nine floor pens in groups of 30 broilers with different space allowances for each treatment; namely eight, 20 and 30 chicks m−2. Chicken growth rate was monitored from day eleven to 46 and indicators of stress, including haematocrit, heterophil/lymphocyte ratio and concentrations of plasma corticosterone, as well as tonic immobility, were measured on days 22 and 46. On day 46, the incidence of foot and skin lesions was assessed, and stress was induced to analyse the response of broilers to each stocking density. High stocking densities cause acute stress in broilers; the effects of low and intermediate stocking densities, however, are not so evident, particularly in relation to tonic immobility and response to acute stress.

As a contribution to the ongoing work aiming to improve welfare in farmed silver foxes (Vulpes vulpes), the present study attempted to investigate stress-induced hyperthermia (SIH) as a physiological indicator of fear or anxiety in this species. Measuring rectal temperature (Trec) served as a stressor and immediately elicited SIH. Then, the foxes received either the anxiolytic drugs, diazepam or buspirone, or sterile saline. Trec in the foxes treated with diazepam and buspirone was significantly lower 90min after treatment. The results indicate that SIH induced by handling was attenuated by anxiolytic drugs, which supports the hypothesis that anxiety contributes to the development of SIH.

Recently, the method by which Japanese and Norwegian whalers kill minke whales has come under scrutiny on welfare grounds. Whales are still caught with a grenade tipped harpoon fired from a cannon. The harpoon is targeted to strike the animal in the thorax, though the pattern of harpoon strikes is variable and some can even be struck in the tail. Once the whale is harpooned, it is winched to the ship and if not dead, attempts are made to kill it either by electrocution or with rifles. Some studies indicate that less than 30 per cent of animals are killed instantaneously, though best practice can achieve 50 per cent of animals killed instantaneously but with wounded animals surviving for up to one hour. To kill any wild animal humanely, immediate insensibility must be induced. Whilst in principle the methods used on whales could induce immediate insensibility, there are indications that neither harpooning nor the secondary killing processes, like electrocution or rifle bullets, are achieving this in an acceptable proportion of the animals taken. Comparison of the killing processes used on minke whales with killing processes used on other animals, indicated that there are several areas where improvements could increase the proportion of whales killed instantaneously and reduce the suffering of wounded animals. Whilst harpooning may remain the favoured method of taking whales, and some improvements have been made in the number of whales killed instantaneously, the equipment has evolved little from that originally developed by the Norwegians in the Nineteenth Century. As currently practised few people would consider the current methods employed by the whaling industry to be humane.

Behavioural and salivary Cortisol responses were measured in hamadryas baboons (Papio hamadryas) (n = 5) undergoing positive reinforcement training (PRT). Compliance was assessed by collecting behavioural data on desirable and undesirable responses during each training session (33-46 training sessions per male). Saliva was collected before implementation of the training programme (3-4 baseline samples per male) and immediately before and ten minutes after a training session (24-53 saliva samples per male). During training, the incidence of leaving the training area, vocalising and threat displays changed across time. Performance of the desired behaviour (holding a target for increasing increments of time) improved for all males during the study period. Concentrations of salivary cortisol were similar for pre-training and post-training collection times, but both were significantly lower than baseline concentrations. The overall decline in undesirable behaviours and the absence of constantly elevated salivary cortisol suggest that PRT had no adverse effects on animal welfare.

Very little is known about the fate of the large numbers of injured and orphaned wild animals taken to wildlife rehabilitation centres in the UK each year. We reviewed the reasons for admission and outcomes for 2,653 woodpigeons (Columba palumbus), 68% of which were juveniles, brought to an RSPCA wildlife rehabilitation centre in Cheshire, UK over a five-year period (2005-2009). Reasons for admission varied with the most common reason for adults and juveniles being ‘injury (cause uncertain)’ and ‘orphan’, respectively. Twenty-one percent of adults and 16% of juveniles had been attacked by cats. Sixty-five percent of adults and 37% of juveniles were euthanased on admission or within the first 48 h to prevent further suffering. Only 14% of adults and 31% of juveniles were released back into the wild. The remainder were either euthanased or died despite treatment more than 48 h after admission. Body condition on admission was not a good predictor of the likelihood of release, but age, weight on admission and severity of symptoms were significant factors. A reduction in the median number of days in care for those birds euthanased more than 48 h after being admitted was recorded for 2007 to 2009, possibly due to the introduction of radiography for all birds on admission. Leg-band recovery data for 15 birds revealed post-release survival ranging from 21-2,545 days (median = 231 days) compared to 1-2,898 days (median = 295) for non-rehabilitated birds.

Suitable systems for the assessment of animal welfare are in increasing demand. In Austria, the TGI 35 L Animal Needs Index is widely used and has been shown to be a feasible and reliable tool for animal welfare assessment on farms. Here we focus on the validity of TGI 35 L assessments, and explore the correlation between animal welfare as assessed by the TGI 35 L and animal health and behavioural parameters. From the results, it can be determined whether the criteria assessed by the TGI 35 L are preconditions for a high level of health and normal behaviour. Behaviour and health were examined in 11 cattle houses, totalling 169 animals. Behaviour was observed for two days on each farm. Data on resting behaviour, comfort behaviour, social behaviour, feed intake behaviour and eliminative behaviour were collected. Health was assessed using veterinary examinations carried out according to the General Clinical and the Orthopaedic Examination Proceedings. Significant correlations were found between the TGI scores and behaviour and health, including results for skin lesions and injuries. This indicates good validity of the TGI 35 L assessment system for cattle. A comprehensive system for the assessment of animal welfare on farms must comprise parameters of housing, climate, management and stockmanship, and animal-related parameters.

Awareness of the self and awareness of others are difficult faculties to define. Part of the problem lies in the wide range of abilities that involve various aspects of awareness. Some of the most commonly studied abilities focus on the self-awareness of the individual. These abilities range from the capacity to distinguish self from non-self to the competency to reflect on one's past, present or future condition. Another set of abilities that is relevant to the study of awareness involves the interactions of individuals, and includes behaviours such as deception and empathy. We explore the possibility that species other than humans engage in deception and empathy, and consider the implications of such behaviours for self-awareness and other-awareness in these species. Although examples from a variety of species are provided, many examples come from dolphins and whales. This reflects both the authors’ interest in these animals and the possibility that large-brained creatures are more likely to engage in deliberate deception and/or true empathy.

Promotion of positive experiences in companion animals is essential for maximising good welfare. However, the dearth of published literature on the experience and expression of positive emotional states in companion dogs suggests they are less well understood than negative emotions. Owner knowledge can provide a basis for generating hypotheses for experimental research, and can inform education initiatives. An online survey of 445 dog (Canis familiaris) owners in the United Kingdom and the Republic of Ireland was used to identify key contexts and behaviours perceived by owners to be associated with positive emotions for companion dogs, and to examine factors which influence owner reports of key behaviours. The contexts most commonly associated with positive high arousal (PHA; ‘happy and excited’) were anticipation of walks or food and with positive low arousal (PLA; ‘happy and relaxed’) were resting and gentle stroking. Respondents’ behavioural profile for canine PHA involved barking, head held high, wide open and ‘bright’ eyes, ears pricked, tail wagging, mouth open, and active, playful behaviour. For PLA, respondents collectively described their dogs as silent, head resting, eyes closed or slightly closed, ears ‘down’, mouth closed and a calm/relaxed activity level. Notably, PLA states were described in less detail than PHA, suggesting the former may be less well understood or difficult to interpret. Dog breed and age, and owner experience and level of attachment to their pet significantly influenced respondents’ likelihood to report certain behavioural indicators, and may influence assessments of pet behaviour and underlying emotion. Further work is required to determine the validity of the behavioural expression and contexts perceived to be associated with positive experiences in dogs.

The restraint and sedation of wild animals has welfare implications, thus animal handling procedures should be well-informed and optimised to adhere to welfare standards. Furthermore, it is important that handling procedures should not cause future trap avoidance. This is of particular pertinence to European badgers (Meles meles), subject to extensive cage-trapping, relating to bovine tuberculosis epidemiology. We examined 4,288 capture/recapture events for 856 individual badgers, occurring between May 1999-September 2011, recording initial observed behaviour and reaction provoked by injection, on a scale ranging from still (0) to distressed/aggressive (3). Eighty-seven percent of adults and 76% of cubs were still (0) when approached initially and 75% of adults and 62% of cubs remained still when injected. Cubs exhibited significantly higher behavioural responses than adults, while female adults scored higher provoked scores than males. Importantly, the initial behaviour of an individual dictated its provoked response. Previous experience of capture was associated with lower subsequent behavioural response scores, while naïve badgers were most prone to score highly. Individuals first caught as cubs scored lower initial responses than those first caught as adults. Lower initial responses occurred in spring and summer and higher responses were associated with lice infestation. Behavioural criteria have potential to inform and optimise welfare in badger capture operations. This contributes to techniques allowing simple, non-invasive assessment of how wild animals in general respond to temporary restraint, where the psychological perception acts as the precursor to physiological stress.

Buprenorphine is a widely used analgesic for laboratory rodents. Administration of the drug in a desirable food item for voluntary ingestion is an attractive way to administer the drug non-invasively. However, it is vital that the animals ingest the buprenorphine-food-item mix as desired. The present study investigated how readily female and male mice (Mus musculus) of two different strains consumed buprenorphine mixed in a commercially available nut paste (Nutella®), and whether variation between genders and strains would affect the subsequent serum concentrations of buprenorphine. Buprenorphine at different concentrations mixed in Nutella® was given to male and female C57BL/6 and BALB/c mice in a complete cross-over study. Pure Nutella® or buprenorphine (1.0-3.0 mg kg−1 bodyweight [bw]) mixed in 10 g kg−1 bw Nutella® were given to the mice at 1500h. The mice were video recorded until the next morning, when blood was collected by submandibular venipuncture. The concentration of buprenorphine in the Nutella® mix did not affect the duration of ingestion in any of the groups. However, female mice consumed the Nutella® significantly faster than males. Repeated exposure significantly reduced the start time of voluntary ingestion, but not the duration of eating the mixture. These differences did not however affect the serum concentration of buprenorphine measured 17 h post administration.

This study investigates the genetic basis of lamb vigour (defined as neonatal lamb activity and sucking ability) and lambing difficulty as potential traits to be included in selection programmes to improve ewe and lamb welfare. Scores for lamb birth difficulty, vigour and sucking ability were collected shortly after birth on 1,520 lambs born in 2006 in 19 different flocks that were members of the UK Suffolk Sire Referencing Scheme. Scores evaluated each trait on a scale of 1 to 4; 1 being no assistance given either during birth or to suck, or excellent vigour, through to 4 where a large degree of assistance was required, or poor vigour. Genetic parameters (heritabilities, genetic correlations) were estimated by fitting an individual animal model using ASREML. Variance components obtained from univariate and bivariate analyses were averaged to provide genetic parameter estimates. Heritabilities for birth difficulty and vigour were moderate but heritability for sucking ability was not significant. The genetic correlation between vigour and sucking ability was positive and high, that between vigour and birth difficulty moderately negative, and that between birth difficulty and sucking ability not significant. Birth difficulty and vigour could be included in Suffolk breeding programmes to help reduce health and welfare problems associated with these traits in Suffolk sheep, and in flocks producing crossbred lambs sired by Suffolk rams. Further work is required to evaluate correlations between these traits and performance traits and to comprehensively validate the scoring system once more data become available.

In many developing nations, dogs (Canis familiaris) present a significant issue in terms of human health, safety and animal welfare. We assessed attitudes towards dogs and their management in Samoa, a developing South Pacific island nation, using a questionnaire. It demonstrated that Samoa has one of the world's highest recorded levels of household dog ownership (88%) but a comparatively low rate of vaccination (12%) and sterilisation (19%). Those interviewed believe dogs were important and should be considered part of the family; however most households reported that their dogs were kept for protection (79%). There was a clear skew in the sex distribution. The dog population showed a strong male bias (71%) suggesting females are removed from the population. Of those surveyed only 16% had received any education about dogs and their management and overall the respondents showed a clear disparity between attitudes and behaviour (eg the majority believe dogs should be vaccinated [81%] yet most dogs in this sample [72%] had never been to a veterinarian). Overall, there was a willingness to manage the free-roaming dog population which was considered by many to be a nuisance, however there were few enforceable mechanisms by which this could occur and most dogs were not confined. Harm or killing of dogs was relatively commonplace with 30% of households reporting they knew someone who had harmed or killed a dog and 26% of respondents indicating they believed harming or killing dogs was good for Samoan society, presumably by reducing problems associated with the free-roaming population. Dog bites were relatively frequent in Samoa and reports from two hospitals indicated a frequency of 37 new bites per annum requiring hospitalisation per 10,000 head of population. Furthermore, this paper outlines strategies and further research that could be considered to improve dog welfare and reduce the need to harm or kill dogs, namely improvements in veterinary provision and dog-focused education. It also considers the need for legislative controls and more research and funding to be made available for small developing nations to explore their animal welfare obligations.

A welfare assessment method was built, based on criteria related to behaviour, lesion scores and human/animal interactions, and tested thereafter in two main types of farms differing by their type of floor: either concrete, fully or partially slatted (C; n = 42) or straw bedding (S; n = 40). Observations were carried out on 40 to 60 pigs per room for three periods (90, 130 and 162 days of age, respectively, for P1, P2 and P3). Behaviour was assessed through five scans with a two-minute interval between two successive observations. Each behaviour was expressed in relation to the total amount of active behaviours. Injuries were scored on a three-level scale (none, mild, severe). Social behaviour was significantly more important at P1 whereas behaviours related to disturbance were more frequently observed at P3. Bursitis did not differ significantly between periods in S farms but did so in C over time. Small differences were seen between periods for injuries: severe lesions (scratches) and lameness were rare on the different flooring systems and severe wounds and tail lesions were less frequent in S than in C farms. Investigation of the environment was more pronounced on S floors, whereas positive social behaviour was more prevalent in C. All criteria studied were characterised by a noticeable variability in both floor types, showing room for improvement in terms of animal welfare in some farms.

Norway rats (Rattus norvegicus) are considered one of the most significant vertebrate pests globally, because of their impacts on human and animal health. There are legal and moral obligations to minimise the impacts of wildlife management on animal welfare, yet there are few data on the relative welfare impacts of rat trapping and baiting methods used in the UK with which to inform management decisions. Two stakeholder workshops were facilitated to assess the relative welfare impacts of six lethal rat management methods using a welfare assessment model. Fifteen stakeholders including experts in wildlife management, rodent management, rodent biology, animal welfare science, and veterinary science and medicine, participated. The greatest welfare impacts were associated with three baiting methods, anticoagulants, cholecalciferol and non-toxic cellulose baits (severe to extreme impact for days), and with capture on a glue trap (extreme for hours) with concussive killing (mild to moderate for seconds to minutes); these methods should be considered last resorts from a welfare perspective. Lower impacts were associated with cage trapping (moderate to severe for hours) with concussive killing (moderate for minutes). The impact of snap trapping was highly variable (no impact to extreme for seconds to minutes). Snap traps should be regulated and tested to identify those that cause rapid unconsciousness; such traps might represent the most welfare-friendly option assessed for killing rats. Our results can be used to integrate consideration of rat welfare alongside other factors, including cost, efficacy, safety, non-target animal welfare and public acceptability when selecting management methods. We also highlight ways of reducing welfare impacts and areas where more data are needed.

Quality of life (QoL) is increasingly recognised as a more important measure of treatment success than prolongation of life. Assessment of QoL may aid decision-making for treatment or euthanasia. This study aimed to evaluate owners’ perceptions of factors affecting their horse's QoL and those factors that may contribute to their decision-making process for treatment or euthanasia of geriatric horses. A cross-sectional study was conducted, surveying a randomly selected sample of veterinary registered owners (n = 1,144) with horses aged ≥ 15 years, using a self-administered postal questionnaire. A section of this questionnaire contained 16 mixed-mode questions about the horse's QoL and factors influencing decisions on treatment. Horses from the cross-sectional survey were enrolled in a longitudinal study and, for cases of euthanasia, a further telephone questionnaire was completed to investigate factors influencing the owner's decision. Owners reported that the majority of geriatric animals enjoyed a high QoL, with 95% of owners rating their horse's QoL as good or excellent on an average day. However, increasing age corresponded negatively with many of the health-related QoL factors. Owners considered long-term diseases that cause chronic pain to affect their animal's QoL more than a disease causing a single episode of acute pain. The most important factors influencing choice of treatment options for a severe illness or injury were QoL after procedure, life-threatening disorders, painful/stressful procedures and veterinary advice. In conclusion, owner ratings and perceptions of factors affecting QoL of geriatric horses may prove useful in the development of a QoL assessment tool for ageing horses.

Three housing systems for fattening rabbits were compared using a stocking density of 15 rabbits m–2. The rabbits were housed in large pens (3.67 m2, 50 rabbits), small pens (0.66 m2, 10 rabbits) or in conventional standard cages (0.39 m2, 6 rabbits) from 31 to 72 days of age. Rabbits housed in each small pen or in each cage belonged to the same litter, and the 50 rabbits housed in each large pen were from six or seven litters. At the end of fattening, when rabbits were 72 days old, there was no significant difference in the weight of rabbits from the three different housing systems, even though the rabbits from small pens were slightly heavier in weight compared with rabbits from large pens. The best feed conversion ratio was found in rabbits from cages, but was only significantly different from rabbits housed in small pens. No significant differences were found in the main activities: nutrition, social behaviour, resting, and standing; however, the frequency of runs, hops and consecutive hops was significantly higher in rabbits from large pens compared with rabbits from the two other housing systems. These results confirm that the total surface area available for animals is the most important factor for such locomotory activities. This study did not reveal any significant difference in aggressive behaviours between rabbits from different litters housed in large pens and between rabbits from the same litter housed in small pens or cages.