This edition of Animal Welfare marks the 10th year of the journal. It was launched in 1992 ‘…in the belief, as was noted in the Editorial of the first volume, ‘that a quality technical journal dealing specifically with scientific and factual aspects of animal welfare will, by the dissemination of knowledge, lead to an improvement in the health and welfare of animals used or controlled by man’. It was by no means certain how this venture would turn out, and in the same Editorial, the then Editor-in-Chief Roger Ewbank, presented a rather grim review of the unhappy outcomes of a number of previous attempts by various publishing houses to establish a journal in the field. However, he emphasized his belief in the project at the outset and it is very gratifying to report that thanks to his efforts and those of all who have been involved - contributors, section editors, referees, advisers and staff - that the journal is doing well. There are subscribers in 38 countries, the number of manuscripts submitted each year is increasing, and the circulation is continuing to rise.

Pathological alterations of the tail tip are a severe problem for fattening cattle husbandry with respect to animal welfare and economic losses. We compared the frequencies of tail tip lesions and less severe skin damage in bulls on farms with slatted-floor pens (slat, n = 10), slatted floor pens with prophylactic tail docking (slat/dock, n = 9), and deep bedding pens (straw, n = 10). In addition, the subjects’ weight, their space allotment and the season of the year were determined to test whether they were related to the frequency of tail tip lesions and skin damage. Results are based on 8782 tail inspections in 764 pens. The frequency of the more severe tail tip lesions was highest in slat farms, less high in slat/dock farms, and lowest in straw farms. However, the incidence of the less severe skin damage was highest in slat farms, less high in straw farms, and lowest in slat/dock farms. The frequency of tail tip lesions increased with the weight of bulls in slat and slat/dock farms, but not in straw farms. In addition, in slat and slat/dock farms the incidence of tail tip lesions increased with a decreasing space allotment. The frequency of skin damage increased with increasing weight of bulls in each housing condition. The effect of weight on the number of tail tip lesions and skin damage was stronger in autumn, ie the period following the warm season, compared to spring. Our results suggest that a soft floor and an enlarged space allotment are the most suitable means of preventing tail tip lesions in fattening bulls. Prophylactic tail docking can reduce the occurrence of tail tip lesions only to a lesser degree and may impair the animals’ welfare.

The effect of an environmental enrichment — straw bales — on the behaviour of growing broiler chicks was investigated by comparing the behaviour of broilers kept in matched pairs of houses on commercial farms with and without bales. The birds provided with bales perched on them and clustered around them. The most striking result, however, was that, even away from the bales, birds in the enriched houses were more active (showing more walking and running and less sitting) than birds in unenriched houses. The study provides support for the ‘Freedom Food’ recommendation that activity in commercially kept indoor chickens can be increased by providing environmental enrichment in the form of straw bales.

Foxes have been kept in captivity in Europe for the purpose of fur production for 70-80 years. In comparison with the main domesticated animal species, this is a very recent intervention. This paper reviews available evidence concerning the welfare of farmed foxes in relation to housing and management. The bulk of the literature relates to early handling of cubs, with the intention of reducing their subsequent fear of humans, and to simple changes in the cage environment that may provide environmental enrichment for foxes. Fear of humans appears to be a significant and pervasive problem, and the barrenness of cages is also a cause for concern. The extent of abnormal behaviours and reproductive failure, both indicative of quite severe welfare problems, is not sufficiently documented. Some housing and management practices are less detrimental than others; nonetheless, the evidence suggests that the welfare of farmed foxes is poor.

Members of the New World primate genera Callithrix and Cebuella have specialisations for eating plant exudates. Exudates are also an important component of the diets of many other callitrichid species in the wild, especially at times of nutritional stress. Gum arabic is fed daily to all marmosets and to some tamarins in Jersey Zoo's collection. This study investigated species differences in liking for gum and the effects of the concentration of gum solutions on palatability. As predicted from field data, Callithrix species consumed more gum than other species; Saguinus also showed quite a strong liking for gum. In parallel with data from the wild, lion tamarins (Leontopithecus spp.) consumed the least, and Callimico also took relatively little. The two marmoset species tended to like stronger solutions of gum more than weak solutions and, therefore, the provision of smaller amounts of stronger concentrations is likely to be the most cost-effective way of incorporating gum into the diet. Providing gum to callitrichids on a regular basis can have significant welfare benefits.

Commercial pigs kept outdoors are often given nose-rings, to inhibit rooting and minimize pasture damage. If rooting is a ‘behavioural need’ in the pig, and ringing is effective because it renders rooting painful, nose-ringing may be a threat to welfare. Thirty gestating sows were assigned to one of three conditions: unringed controls (UR); sows ringed with three, wire ‘clip’ rings through the snout rim (CR); or sows with one, rigid ‘bull’ ring (BR). They were observed on grass for 7h day−1 at intervals over 6 months. Ringing almost totally abolished penetration of the ground by rooting during the month after ringing (UR, CR and BR sows respectively spent 5.6%, 0.1% and 0.1 % of scan observations dig-rooting during this month; P < 0.001). These differences in recorded rooting were reflected in a much greater extent of pasture damage in paddocks containing UR sows. Rooting remained largely suppressed throughout the 6 months of observations in BR sows; but substantial recovery of this function occurred in CR sows by the sixth month, although much of this may be attributed to the fact that most sows lost at least some of their rings. Ringing also partially inhibited grazing (which accounted for 26.2%, 27.1% and 21.9 % of scans over the whole project in UR, CR and BR sows respectively; P < 0.05), nosing in straw, digging out wallows and stone-chewing (18.3%, 9.5% and 9.2% respectively of all scans in UR, CR and BR sows; P < 0.001). Ringed sows spent more time standing but otherwise inactive than did controls (0.8%, 1.7% and 4.0% of all scans in UR, CR and BR sows respectively; P < 0 .001), and displayed more straw-chewing, vacuum-chewing and digging at soil with the forepaw. We conclude that nose-ringing in pigs inhibited a range of functional activities, as well as rooting, and elicited more behaviours that suggest a degree of reduced welfare. BR sows displayed more of these effects than did CR ones, although these differences may be largely, but not entirely, due to a loss of clip rings over time.

It has been shown that, in small groups of intact male domestic turkeys, supplementary ultraviolet (UV-A) radiation, visual barriers, and added straw (environmental enrichment) minimize the incidence of injurious pecking under incandescent light at 5 lux. This paper describes two experiments, each involving eight groups of 100 non beak-trimmed birds up to 5 weeks of age, that assessed the effectiveness of these procedures at higher light intensities and with fluorescent light. Experiment 1 examined 5 or 10 lux of incandescent or fluorescent light. Experiment 2 studied responses to 5, 10, 36 or 70 lux of fluorescent light. Individual inspections of the birds, for wing, tail and head injuries due to pecking, were conducted daily.

Fluorescent light significantly reduced the incidence of tail injuries (P = 0.03), and tended to reduce those to the wings (P = 0.08), compared with incandescent light. No difference was observed between 5 and 10 lux for either tail or wing injuries. In Experiment 2, the incidence of tail and wing injuries was significantly and positively correlated with light intensity (tail, P = 0.05; wing, P = 0.02). Injuries to the head were minimal in all treatments. These results suggest that turkey poults may be kept with minimal injurious pecking, under fluorescent light at an intensity of 10 lux, with appropriate environmental enrichment.

The present study examined the extent to which the introduction of three female Asian elephants (aged 3, 11, and 27 years) into a group of 1.4 (1 male, 4 female) elephants at Münster zoo, Germany, affects the behaviour and urinary Cortisol levels of the animals involved. At Münster, only the females were monitored — the bull was mainly kept separate. Behavioural observations were carried out before transfer and during the six-month period following transfer, and urine samples were collected regularly from each elephant during the whole observation period. All elephants showed behavioural changes to the process of introduction. The transferred animals increased their social behaviour after arrival in the foreign zoo. Two of them showed an increase in stereotypies and one a reduction in stereotypies. The elephants at Münster reacted with decreased frequencies of stereotypies and increased frequencies of social behaviour and manipulation/exploration behaviour. Six months after transfer, three of the four elephants at Münster and one of the three transferred elephants showed nearly the same behavioural activity pattern as before transfer. One female still showed elevated stereotypic behaviour. From the four elephants in which Cortisol measurements could be reliably performed (two of the transferred elephants and two elephants at Münster), only one individual at Münster responded to the process of introduction with a short-term elevation in urinary Cortisol levels. One elephant showed a negative correlation between locomotion and Cortisol levels and one a positive correlation between stereotypies and Cortisol levels. Taken together, the results suggest that transfer and introduction caused some stress responses in the elephants, but that stress was neither prolonged nor severe. Serious welfare problems may have been prevented through individual behavioural coping mechanisms and former experience with stressful situations.

Nowadays in Europe, farmed blue foxes are kept for most of the year in wire-mesh cages furnished with a platform for resting and observing the environment but without any opportunity for hiding from other foxes or from man. We studied the welfare effects of providing an elevated platform and two types of concealment screens in singly housed juvenile male blue foxes (n = 46) from August to December. The foxes were allocated to four experimental groups: group C had no furnishing in the cage, group P had a platform in the cage, group U had a platform and a concealment screen in the cage, and group O had a platform and a concealment screen on the outer wall of the cage. The blue foxes with platforms (groups P, U and O) spent the majority of their time on the platforms both when their cages were approached by man and as revealed by 24 h video recording. The 24 h recordings revealed that the foxes tended to avoid those locations in the cage where the screens obstructed their view (groups U and O); however, when the screens allowed the foxes to hide from an approaching man (group U), they were used for that purpose to some extent. There were no differences between the four groups in terms of growth, increase in rectal temperature after an acutely stressing situation, adrenal size, or fearfulness. The urinary cortisol: creatinine ratio showed that foxes in group U may have been less stressed than those in groups P and O in September, but no differences were observed in October. The concealment screens of group U may have improved the welfare of these blue foxes.

The purpose of this experiment was to investigate the welfare of pregnant mares kept in straight stalls and given only limited exercise, conditions that are similar to those encountered in the pregnant mare urine industry. Sixteen pregnant mares (eight in each of two years) were randomly assigned to two groups: Ex (exercised in a paddock for 30 min per day) or NoEx (exercised for one 30 min period every 14 days). The horses were housed in straight (or ‘tie’) stalls for six months and had ad libitum access to grass hay. Each horse's behaviour was recorded on videotape once per week for 24 h. The major behaviours were eating hay, standing, and stand-resting (head down and one hind limb flexed). There was no difference between the behaviours or the number of foot lifts per min of the Ex and NoEx groups in their stalls. Nine of 16 mares were not observed in recumbency throughout the whole of the six-month observation period, suggesting that horses with no previous experience in straight stalls may be reluctant to lie down. Thirteen of 16 mares dropped to their knees at least once, probably when they were REM sleeping while standing. There were no significant differences between the Ex and the NoEx mares in baseline plasma Cortisol levels or in Cortisol response to ACTH. Following 30 min of exercise, NoEx mares showed an increase in Cortisol from 5.0 to 5.4 μg dL−1, whereas Ex mares showed a decrease from 4.6 to 3.6 µg dL−1. The NoEx horses that had been confined for two weeks trotted more (NoEx = 22 [6-38; median and range]% of time; Ex = 2.4 [0-8.7]%) and galloped more (NoEx = 6 [2-8]%; Ex = 0 [0-4]%) than the Ex that were released daily, but walked less (NoEx = 17 [10-26]%; Ex = 35 [20-40]%) and grazed less (NoEx = 0%; Ex = 3 [0-12]%). Confined horses show rebound locomotion — that is, a compensatory increase — when released from confinement, indicating a response to exercise deprivation.

The damage caused by ear tags used for sheep identification was investigated in a two-part study. In Part I, ear tags classified as metal loop, golf-tee, single flex or lambtag were inserted into the ears of 62 ewes. The severity of ewe ear lesions was monitored until 20 weeks after ear tag insertion. In Part II, 351 lambs had tags classified as metal loop, plastic loop, golf-tee, double flex, single flap, lambtag and electronic, inserted in their ears. The behaviour of the lambs was observed for 30s after insertion of the ear tag. The severity of lamb ear lesions was monitored until 5 weeks after ear tag insertion. In both ewes and lambs there was a significantly greater risk of severe and persistent ear lesions following the use of metal loop tags as compared with the other types of ear tag (P < 0.001). The single flap tag was difficult to insert in a greater proportion of lambs (P < 0.001), and more lambs haemorrhaged (P < 0.001), vocalized (P = 0.002) and shook their heads (P = 0.004) with it, than with the other types of ear tags. All ear tags resulted in an inflammatory reaction and required correct positioning to minimize the severity of ear lesions.

An experiment was conducted to compare the effect of two levels of house stocking density (34kg m 2 and 40kg m’2) on broiler welfare and behaviour. The trial monitored 121 900 birds housed in eight flocks under commercial conditions and used a range of behavioural and productivity measures to assess welfare.

At the higher stocking density: i) the daily mortality was greater for part of the rearing period; ii) the incidence of leg problems, contact dermatitis and carcase bruising increased; Hi) the birds’ resting behaviour was increasingly disturbed; iv) locomotion and ground pecking decreased; and v) lying and preening patterns were affected, probably due to increased disruption by other birds.

Aspects of welfare were adversely affected at the higher stocking density. Further research is required to determine how stocking density affects welfare under different commercial conditions.

The level of priority and resource given to the care of organisms is influenced by beliefs and understanding about their capacities for conscious awareness. Variation in attitudes to animal welfare around the world today is partly a reflection of this. Improved understanding of the range of phenomena of which animals may be conscious is likely to lead to greater global consensus about the importance of high standards of animal welfare. This is a matter of current relevance. In the global free market there is a danger that efforts in one country to raise standards for farm or laboratory animals will be compromised by competition from others which employ cheaper, less welfare-friendly systems. Scientific developments which inform us about animals’ capacities for pleasant and unpleasant feelings will play an important role in the development of global agreement about animal welfare standards. Deciding which animals might have the capacity for consciousness, and thus for suffering, and of what they might be conscious, are fundamental issues which set boundaries to the ranges of species to be given basic or special forms of welfare protection. In practice, such lines have to be drawn and it is crucial that they are drawn in the right place. This is a difficult but essential task and society looks to scientists for guidance on the matter. There have been many developments in recent years in scientific approaches to the study of consciousness in animals which are pertinent to this debate.

Thinking about animal consciousness is beset with many pitfalls, a few of which are: i) lack of clarity in words used, especially confusing ‘cognition’ with ‘consciousness’ and using words such as ‘emotion’ in both an objective sense (behaviour and physiology) and to imply consciousness; ii) failing to acknowledge sufficiently that different people use different versions of the argument from analogy with ourselves to infer consciousness in non-humans in animals; iii) assuming that choice and preference imply consciousness; iv) assuming that autonomic responses imply consciousness (a particular danger to those who look for physiological ‘measures’ of animal welfare); v) assuming that complexity of behaviour implies complexity of cognition and in turn consciousness; and vi) assuming that only cognitively complex organisms are conscious. Consciousness raises many questions of direct relevance to animal welfare that as yet have no answers, but finding possible answers may be made slightly easier if we avoid these obvious pitfalls.

It has been suggested that housing of laboratory primates in two-tiered racks adversely affects the psychological well-being of those primates housed on the lower row. Excessive darkness and its consequences are among the factors suggested to account for the supposed diminished well-being of lower-row inhabitants. Additionally, two-tiered housing has been suggested to introduce unacceptable variation into experimental designs, potentially necessitating additional subjects and/or invalidating results. Only recently have data been published to address these issues, but all studies have involved small numbers of subjects. In the present study, we compared the behaviour of 45 yearling rhesus macaques (Macaca mulatta) housed in upper-row cages with the behaviour of 48 yearling rhesus macaques housed in lower-row cages during a year of single housing. There were no significant differences across cage locations for time spent performing behaviours indicative of diminished psychological well-being (abnormal behaviour, inactivity, vocalisation, self-directed grooming) or for species-typical activities (feeding, playing). The difference in time spent exploring between macaques housed on the lower row and those housed on the upper row approached significance, with lower-row-housed animals spending more time exploring. Although lower-row cages are significantly darker than upper-row cages at our facility, the data from the present study demonstrate that the diminished lighting and other supposed disadvantages experienced by lower-row-housed monkeys have few behavioural consequences. Thus, there are now additional empirical data that suggest that lower-row-housed monkeys are not suffering in a “monkey cave”, and that the findings of research projects using two-tiered housing systems are unlikely to be compromised.

The possibility of improving the welfare of fattening rabbits by rearing them in pens instead of cages was investigated. Time budgets, locomotion, ear lesions, breaking strength of the femur and productivity were compared in fattening rabbits kept at the same stocking density (15 rabbits m−2) either in standard cages of 0.4m2 (6 animals) or in pens of 1.6m2 (24 animals). Behavioural observations, performed by video recording at 6 and 9 weeks of age, indicated that the frequency of rabbits walking over one another was higher in cages than in pens at 9 weeks of age. Although the time spent in locomotion did not differ significantly, the number of consecutive hops performed by animals was clearly increased in pens at 6 weeks and tended to be higher at 9 weeks. In pens (without a ceiling), rabbits were observed ‘keeping watch’ with a characteristic fully upright posture; this was not possible for rabbits in cages (with ceilings at 30cm).

Ear lesions were more frequent in caged rabbits than in penned; this might be due to the caged rabbits walking on one another, due to the lack of space to perform locomotory behaviour. Weight, diameter and breaking strength of femur tended to increase in rabbits kept in pens. In penned rabbits, body and carcase weight were significantly reduced (by 2.0% and 3.4% respectively) when compared with caged ones. However, overall, the use of wire-floor pens of 1.6m2, housing 24 animals, was considered to be beneficial to fattening rabbits’ welfare when compared to standard-sized cages holding 6 animals.

Animal welfare is a major issue in Europe, and the production of mink, Mustela vison, has also been under debate. One common method of solving animal welfare problems is to adapt the environment to fit the behavioural needs of the animals. In comparison with other forms of husbandry, the mink production environment has remained relatively unchanged over the years and provides for some of the most obvious needs of mink. Whether today's typical housing conditions adequately meet the welfare requirements of mink is currently a topic of discussion. An alternative approach to improving welfare is to modify the animals so that they are better adapted to farming conditions. In large-scale animal production, handling of the individual can be a sporadic event, making an animal's inherent characteristics for temperament and adaptability important factors to consider with respect to its resultant welfare.

In this review we present and discuss experiments on behavioural selection for temperament, and against undesirable behaviours, such as fur chewing, in mink. Fur chewing behaviour can be reduced by selection, apparently without any negative effects, whereas only a little is known about the nature and consequences of selecting against stereotypic behaviours. Long-term selection experiments have shown that it is possible to reduce fearfulness in farmed mink. Using a relatively simple test, it is possible for farmers to add behavioural measurements to their normal selection criteria and thereby improve the welfare of farmed mink.

Intense selection for productivity may have indirectly affected some behavioural traits in poultry. Intensive husbandry systems change rapidly, and the animals may have difficulties in coping with their environment and management. The aims of this study are to examine the fear reactions of two strains of chicken (Gallus gallus domesticus) and to test the relationship between these fear reactivity levels and the chickens’ semen characteristics. Semen characteristics may indicate the effect of genetic selection both on the productivity and fitness of the animals. Forty cocks of two genetics strains (an egg-type strain and a meat-type strain), housed in single cages, were used in the study. During the breeding period, semen was collected twice a week from each animal. Each cock was submitted to an open-field test and a tonic immobility test. The results show that strong genetic selection, carried out over a long period on domestic chickens in order to improve egg and meat production, seems to affect some aspects of behaviour. The reactions to the fear tests show many differences between the two strains: in the open-field test, the egg-type cocks show higher levels of exploratory behaviour and lower general fearfulness (eg lower frequency of vocalisations and head movements). On the other hand, the meat-type cocks show a significantly lower duration of tonic immobility, indicating a lower level of fear specifically towards humans. Moreover, a key nearest neighbours analysis carried out using the behavioural data allows us to discriminate between the two strains with an error rate of 0%. These results suggest the potential for genetic selection aimed at reducing fear reactions, both towards novel environments and towards human beings, which may significantly improve the welfare of cocks.