bluuebunny/crossref_metadata_2025 huggingface dataset:
The Creolizing Turn and Its Archipelagic Directions
Authors: Kabir Ananya Jahanara
Published: January 2023

Recent years have seen a resurgence of scholarly interest across disciplines around the concept “creolization” even as there has been some pushback against this development in other academic quarters. This article contextualizes this state of art around “creolization” and presents an analytical overview of the term’s discursive history. First, I discuss the appearance of the termcreolein several areas of the world as an epiphenomenon of the first wave of European expansionism from the fifteenty century onward. Second, I track the emergence of “Creole” as an analytical category within nineteenth-century philology and its further development within linguistics. Third, I focus on milestones in the move of “creole” to “creolization” as a category for theorists of culture. Finally, I discuss recuperations of creolization as a theoretical model, including my own work that articulates it together with theoretical approaches to archipelagos.
Bell Beaker Burial Customs in North-western France
Authors: FAVREL QUENTIN , NICOLAS CLÉMENT
Published: January 2023

Ever since large amounts of Bell Beaker complex pottery were first discovered within megalithic graves in north-western France, the Bell Beaker has been tightly tied to the ‘megalithic phenomenon’. However, the fact of construction of these various kinds of megalithic monument during the Middle to Late Neolithic pre-dates the users of Bell Beakers. While this is a case of the re-use of older funerary monuments, it is assumed that Bell Beaker funerary practices witness a shift from Neolithic collective burial to individual inhumation. For a long time finds from the megalithic graves have constituted our main source of information on the Bell Beaker complex in north-western France. However, these ‘artificial caves’ have biased our understanding of the Bell Beaker complex and, in particular, of its funerary practices. The re-assessment of old finds and recent large-scale excavations have brought to light a large number of new sites, revealing a greater diversity in Bell Beaker funerary practices in the region than had been perceived previously. In the first part, we set the broader picture, stating what we know or can say about funerary practices during the Recent and Late Neolithic (3350–2550 bc), before the beginning of the Bell Beaker phenomenon. We then discuss the different Bell Beaker burial practices (2550–1950 bc), their chronological and regional variabilities, and, above all, the research biases that might have affected their understanding.
Establishing the occurrence of late Neoarchaean – earliest Palaeoproterozoic magmatism in the Daqingshan area, northwestern North China Craton: SIMS U–Pb zircon dating, Lu–Hf and Sm–Nd isotopes and whole-rock geochemistry
Authors: Dong Chunyan , Xu Zhongyuan , Wilde Simon A. , Ma Mingzhu , Liu Shoujie , Xie Shiwen , Li Pengchuan , Wan Yusheng
Published: January 2023

Daqingshan is located in the northwestern North China Craton where late Neoarchaean supracrustal rocks occur widely, but where magmatic zircon ages have rarely been reported for plutonic rocks. In this study, we report SIMS U–Pb zircon ages and Hf isotope, whole-rock element and Nd isotope compositions for 12 magmatic samples, including TTG, quartz monzonitic and monzogranitic gneisses, and meta-gabbroic and dioritic rocks. They have magmatic zircon ages of 2530–2469 Ma; some samples have ages of <2.48 Ga likely influenced by late Palaeoproterozoic tectonothermal events, making their ages less reliable. TTG gneisses have low Sr/Y and La/Yb ratios, with whole-rock ϵNd(t) andin situmagmatic zircon ϵHf(t) values of +1.2 to +2.4 and −1.1 to +6.2, respectively. Quartz monzonite and monzogranite gneisses and gabbroic to dioritic rocks have similar Nd–Hf isotope compositions to the TTG gneisses. The absence of zircon >2.6 Ga in the early Precambrian rocks suggests that the Sanggan Group may have formed in an oceanic environment, whereas the TTG rocks formed as a result of partial melting of the basaltic rocks of the Sanggan Group under relatively low-pressure conditions. Combined with previous studies, the main conclusions are that in the Daqingshan area, late Neoarchaean magmatism was widespread, the late Mesoarchaean – early Neoarchaean was an important period of juvenile continental crustal growth, and the late Neoarchaean supracrustal and plutonic rocks most likely formed in an arc environment. These are common signatures for Neoarchaean crustal evolution throughout much of the North China Craton, and also globally.
VARIANTI DEI MODELLI DI GOVERNO PARLAMENTARE
Authors: Pasquino Gianfranco
Published: January 2023

Introduzione

«Chi conosce il diritto costituzionale classico e ignora la funzione dei partiti, ha un'idea sbagliata dei regimi politici contemporanei; chi conosce la funzione dei partiti e ignora il diritto costituzionale classico ha un'idea incompleta ma esatta dei regimi politici contemporanei» (Duverger 1961, p. 412) Alla luce di questa preziosa indicazione metodologica dell'autorevole politologo e costituzionalista francese, il dibattito italiano sul «premierato» appare immediatamente e sostanzialmente inadeguato perché incapace, tranne pochissime eccezioni, di tenere insieme il sistema dei partiti e il modello di governo. Certo, è innegabile che le regole e le attribuzioni di poteri costituzionali hanno anche una dinamica e una forza propria e specifica. Tuttavia, il modo e il grado di successo con il quale regole e poteri incidono sui rapporti governo/parlamento e governo/elettorato differiscono in maniera significativa a seconda del sistema di partiti sottostante sul quale si applicano e con il quale interagiscono. In questa sede, manterrò l'analisi focalizzata esclusivamente sui modelli parlamentari di governo, ma, naturalmente, anche qualsiasi tentativo di comprendere e di rendere conto del funzionamento dei modelli presidenziali di governo appare altrettanto inadeguato se, per l'appunto, non tiene conto dei diversi sistemi di partito sui quali viene innestato ciascun modello presidenziale (per le indispensabili differenziazioni fra presidenzialismi e parlamentarismi, si veda Sartori 2000; per un tentativo, peraltro piuttosto confuso poiché si perde in eccessive specificazioni che non conducono ad opportune generalizzazioni, Shugart e Carey 1992).
LA «VOCE» DI SIDNEY VERBA
Authors: Ono Keiko , Wilcox Clyde
Published: January 2023

Introduzione

Sidney Verba sta lavorando ad un nuovo libro, in collaborazione con Henry Brady e Kay Schlozman. Verba ha 71 anni, e molti si sarebbero aspettati che prendesse congedo dalla ricerca creativa per scrivere saggi sintetici sulla storia della disciplina. Dopo tutto Verba era presente alla nascita del movimento comportamentista in politica comparata — uno degli autori di The Civic Culture. E inoltre negli ultimi decenni ha pubblicato due importanti libri sul volontariato civico e sulla partecipazione politica, per un totale di quasi 1.100 pagine (Verba, Schlozman e Brady 1995; Burns, Schlozman e Verba 2001). È anche riuscito a pubblicare quattro articoli sulla American Political Science Review, tre sul Journal of Politics, due sull'American Journal of Political Science e due rispettivamente sul British Journal of Political Science e sul Journal of Theoretical Politics. Un livello di produttività notevole per studiosi di qualsiasi età. Di certo nessuno avrebbe obiezioni se si prendesse una pausa.
Behavioural and clinical responses of turkeys stunned in a V-shaped, carbon dioxide tunnel
Authors: Hänsch F , Nowak B , Hartung J
Published: January 2023

Stunning with carbon dioxide gas (CO2) is used in turkeys (Meleagris gallopavo var domesticus) as an alternative to electrical water bath stunning. Investigations were carried out to assess the behavioural and clinical responses of turkeys stunned in a V-shaped CO2tunnel while sitting in their transport crates as part of the usual slaughter routine in a commercial abattoir. The CO2concentration in the tunnel rose from 27% at the first observation point (A) to 74% at point D and the transport time was 180 s. At window 1, 37.1% of the birds showed head shaking, 3.7% deep breaths and 2.9% intensive wing-flapping and at window 2 the respective figures were 2.2, 18.4 and 6.2%. All birds appeared to have lost consciousness at the point of leaving the tunnel. Prior to shackling, 15 s after leaving the tunnel, 230 animals were tested for both interphalangeal reflex and eyelid closure; 20.4% had an incomplete eyelid closure but none displayed an interphalangeal reflex. It would appear that the tunnel system we investigated stuns turkeys effectively within 180 s. However, the initial stunning phase of 40-105 s appears to cause the animals distress, which is demonstrated by head shaking, deep breaths and wing flapping.
Do gorillas regurgitate potentially-injurious stomach acid during ‘regurgitation and reingestion?’
Authors: Hill SP
Published: January 2023

Regurgitation and reingestion (R/R) of foodstuffs is a common abnormal behaviour in captive western lowland gorillas (Gorilla gorilla gorilla) and certain other non-human primates, but it is not part of their normal feeding mechanism. It is similar to a behavioural problem seen in humans, human rumination syndrome (HRS), which can occur in association with anxiety or a poor relationship with a caregiver. Patients with HRS often regurgitate stomach acid with the food matter which can result in clinical problems; until this study, it was not known if stomach acid is regurgitated by gorillas also. Thus, samples of regurgitated matter were collected opportunistically and non-invasively, and pH was measured using an electronic meter. Results were compared with the pH of samples of the original food eaten by the gorillas, and show that regurgitated food has significantly higher acidity than the originally-ingested meal. By comparison, samples of saliva were collected from gorillas opportunistically, in the absence of recent ingestion, and were found to be alkaline and, thus, saliva should not have contributed to the increased acidity of regurgitated matter. The results imply that stomach acid is being regurgitated, as in human patients with potentially-injurious rumination syndrome, and it is indicative of sub-optimal welfare. Causes and effects of R/R should be investigated further, to lead to potential treatment and prevention and to promote the welfare of captive gorillas.
Stocking density and stress induction affect production and stress parameters in broiler chickens
Authors: Villagrá A , de la Torre JL Ruiz , Chacón G , Lainez M , Torres A , Manteca X
Published: January 2023

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.
Effect of footrests on the incidence of ulcerative pododermatitis in domestic rabbit does
Authors: Rosell JM , de la Fuente LF
Published: January 2023

Ulcerative pododermatitis or sore hocks is a common condition in adult rabbits housed in cages with wire-mesh floors. This study was carried out on a recently-opened commercial farm with 224 breeding cages (112 without footrests [NFR] and 112 with footrests [FR]) to assess the effect of footrests on the incidence of sore hocks (SH) and plantar hyperkeratosis (K) on domestic rabbit does, throughout the first part of their productive lives. The accumulated incidence of SH in the fifth lactation was 71.5 and 15.1% for NFR and FR groups, respectively and the accumulated incidence of K, at the same point, was 100 and 64.5%. The footrests were also found to have a curative effect on 81.3% of affected does. Clinical and epidemiological information obtained in this study revealed that the installation of a plastic platform or slatted footrest on the wire mesh played a significant role in the prevention and cure of sore hocks. Problems specifically related to cage hygiene and cleanliness were not addressed in this study.
Reducing post-mixing aggression and skin lesions in weaned pigs by application of a synthetic maternal pheromone
Authors: Guy JH , Burns SE , Barker JM , Edwards SA
Published: January 2023

In commercial pig production, piglets are often mixed after weaning which can result in severe aggression and lead to body damage, disruption of feeding behaviour and reduced growth. This experiment investigated whether application of a synthetic maternal pheromone to groups of weaned pigs in commercial housing would affect the level of aggression and skin lesions sustained after mixing. Two treatments (Pheromone and Control) were used with 16 replicate pens of pigs (20 pigs per pen). Treatments were applied on the day of weaning (average 28 days of age) on a per room basis in alternate weeks. In Pheromone pens, after routine washing and disinfection, the walls and feeders were treated one hour prior to occupation with a synthetic pheromone at a rate of 1.0 ml pig−1. Control pens were as for Pheromone except no product was applied. During the 24-h period, post mixing, pigs in pheromone-treated pens spent significantly less time fighting than those in control pens. This was reflected in reduced injury scores 24 h after mixing, with pigs in pheromone-treated pens having 39% fewer skin lesions on the front of the body compared to those in control pens. Treatment had no effect on growth rate or feed efficiency, although the feed intake for days 7–28 was significantly lower and feed efficiency tended to be lower in pheromone-treated pens. In conclusion, application of a synthetic maternal pheromone can be considered one of the arsenal of strategies to reduce aggression and safeguard the welfare of groups of weaned pigs where mixing is unavoidable.
Neonate rats demonstrate high levels of retention for odour preference when a substantially reduced training trial of two minutes is used
Authors: Ogeil RP , Edwards TM
Published: January 2023

Neonate rats have played an important and unique role within the memory literature. Specifically, they are relatively naïve to experience, can be trained in an ethologically-valid way, using a single trial, which is not aversive and can demonstrate retention for at least 24 h, post-training. As such, they have provided salient insights into the biological mechanisms underlying the memory trace and brain development. The task of choice for rat pups is one using odour preference requiring the removal of each pup from the nest/dam for a ten-minute training trial. For such young animals this may reasonably lead to undue stress and the potential of subsequent rejection by the dam. Little research has considered whether the training duration could be substantially shortened to provide significant animal welfare benefits while maintaining, if not improving, task efficacy. This issue was addressed in the current paper using six-day old Wistar rats (n = 175) exposed to a single-trial, odour-preference task using either a standard ten-minute training trial or a shorter two-minute training trial. Exposing rat pups to the training odour for two minutes did not compromise the level of discrimination observed at test 24 h later. This finding suggests that significantly shorter training trials can be used without compromising retention levels at test. This not only has obvious welfare benefits, but may reasonably be considered to reduce pups’ stress levels which are known to alter both the strength and timing of the memory trace.
Overall assessment of animal welfare: strategy adopted in Welfare Quality®
Authors: Botreau R , Veissier I , Perny P
Published: January 2023

Animal welfare is multidimensional; its assessment relies on complementary measures covering all dimensions. Welfare Quality® constructed a multicriteria evaluation model for its assessment at unit level (farms, slaughterhouses). Four welfare principles are distinguished (‘Good feeding’, ‘Good housing’, ‘Good health’, and ‘Appropriate behaviour’). An animal unit receives four principle scores (expressed on a 0-100 value scale). These scores are aggregated together to form the overall assessment by sorting animal units into predefined welfare categories boundaried by reference profiles. A unit is assigned to the welfare category above the profile it is considered at least as good as. Several assignment procedures were tested on a set of 69 dairy farms and compared with observers’ general impressions. The welfare categories, reference profiles and assignment procedure were defined in consultation with social scientists, animal scientists and stakeholders. Four welfare categories were defined: ‘Excellent’, ‘Enhanced’, ‘Acceptable’, and ‘Not classified’. The reference profiles were set at 80, 55 and 20, corresponding to aspiration values for Excellent, Enhanced and Acceptable. The assignment procedure resulted from a compromise between theoretical opinion on what should be considered excellent, enhanced or acceptable, and what can realistically be achieved in practice: to be assigned to a given category, a unit must reach its aspiration value on 2 or 3 of the 4 principles, and not score below the aspiration value for the next lowest category on the other principle(s). The model can be used for several purposes, including identifying welfare problems on a farm to advise farmers, or checking compliance with certification schemes.
Belgian consumers’ attitude towards surgical castration and immunocastration of piglets
Authors: Vanhonacker F , Verbeke W , Tuyttens FAM
Published: January 2023

In the vast majority of European countries, piglets are surgically castrated in order to eliminate the risk of boar taint, an odour or flavour that can be present when pork from entire males is cooked. However, surgical castration is the subject of much debate and criticism as a result of its negative implications for piglets’ welfare, integrity and health. At present, there is much ongoing research into potential alternatives, among them immunocastration. This practice involves the injection of a vaccine that inhibits the production of the hormones responsible for boar taint. Although satisfactory results are associated with immunocastration in terms of meat quality and production parameters, uncertainty concerning consumer acceptance is often put forward as a key element in the quest for a successful market introduction. This study focuses on consumer awareness of piglet castration and attitudes towards immunocastration by means of a web-based questionnaire among 225 Flemish consumers. We noted approximately 40% awareness of the routine practice of castrating piglets and this limited awareness is accompanied by a moderate level of concern regarding castration, especially in comparison to food safety and other pork production system-related animal welfare issues. Sixty percent of the sample had a general appreciation for the concept of immunocastration, as opposed to surgical castration. Informing consumers about the potential benefits and/or risks from immunocastration did not tend to have much effect in terms of altering their attitudes. Immunocastration did not emerge as a problem in terms of consumer acceptance: special attention should be paid to consumers’ perception of pricing, food safety and the taste of the meat from immunocastrated pigs.
Cow gait scores and kinematic gait data: can people see gait irregularities?
Authors: Van Nuffel A , Sprenger M , Tuyttens FAM , Maertens W
Published: January 2023

Increasing lameness problems associated with intensified dairy cattle production has lead to the development of several techniques to automatically detect these problems. Comparisons of these new measuring techniques of cow locomotion with the conventional subjective observer scoring are scarce. In order to better understand human observers’ gait scoring, cows walking on a pressure-sensitive mat were evaluated for kinematic gait variables and a visual assessment of gait was also made via video recording. Forty of these videos were used for subjective gait scoring on a 3-point scale, and the observers were also asked to report any observed abnormalities (lameness indicators) that had influenced their scoring. Relationships between reported lameness indicators and subjective gait scores, between subjective gait scores and measured kinematic variables of cow locomotion and between reported lameness indicators and measured kinematic variables of cow locomotion were investigated. In general, observers based their gait score on reported indicators such as ‘tenderness’, ‘arched back’, ‘irregular gait’ and ‘increased abduction’. All of these four reported lameness indicators were correlated with measured kinematic ‘variables of asymmetry’, ‘stance time’ or both, suggesting that human observers are capable of detecting changes within these lameness indicators as measured by the pressure-sensitive mat. ‘Increased abduction’ appeared harder to detect and was reported more frequently by observers already experienced with gait scoring. Also, the measured kinematic variables of ‘stance time’ and ‘measures of asymmetry between left and right limbs’ as measured by the pressure-sensitive mat, show potential in predicting the gait score given. These reported lameness indicators and measured kinematic variables —mutually correlated and both related to the gait scores — were considered promising for subjective gait scoring in general.
Genetic opportunities for pork production without castration
Authors: Merks JWM , Hanenberg EHAT , Bloemhof S , Knol EF
Published: January 2023

In most parts of the world, male pigs are castrated shortly after birth to prevent the production of meat with an unpleasant odour called ‘boar taint’. However, public concerns regarding surgical castration are on the increase and it is becoming an important animal welfare issue due to the pain associated with the process. In addition, pork production from entire males is more desirable as it is 5-12% more efficient than that from castrates. Therefore, this study was conducted to investigate genetic opportunities to stop castration and produce boar-taint-free pork from entire males as a long-term cost-effective solution to the problem. The main compounds responsible for boar taint are androstenone and skatole. The genetic aspects of these two main boar-taint components were investigated in purebred pigs of a commercial sire line as well as crossbreds of three sire lines. The comparison of crossbreds suggests that significant genetic differences can be expected in the market hogs due to different sire line choices. Heritabilities for the three components ranged from 0.25 to 0.64. Their genetic correlations with production traits were close to zero or favourable. Model calculations using these parameters suggest that it is possible to reduce the concentrations of the main boar-taint components below thresholds for boar taint. This way, pork can be produced from males without castration and problems of boar taint can be eliminated in approximately four generations of genetic selection.
The use of a hand-held algometer as a method to measure mechanical nociceptive thresholds in sheep
Authors: Stubsj⊘en SM , Valle PS , Zanella AJ
Published: January 2023

The aim of this study was to explore the use of a hand-held algometer for the measurement of mechanical nociceptive thresholds (MNT) in sheep (Ovis aries). Twelve ewes were tested over three consecutive days by two operators, and MNTs were measured over six predetermined sites on both forelimbs every five minutes for 30 min. The effects of test period, measurement number within test period and different anatomical points on MNT levels were investigated, in addition to establishing baseline MNT levels for the sheeps’ forelimbs. A significant decrease of MNT values was observed over the three consecutive test days and within each test period. The anatomical points located closest to the carpus and fetlock joints had significantly higher MNT values compared to the anatomical points located over the middle part of the metacarpus, possibly due to the protective function of the distal part of the extensor retinaculum and the dorsal pouch of the fetlock joint capsules. There was no difference in MNT values between the right and left foreleg. There was a tendency for a flattening out of the drop in MNT towards the last measurement. Hence, we suggest using the values from the last two measurements when determining normative values, and to habituate the ewes to the procedure of measuring MNT levels. Taking these factors into consideration, a hand-held algometer is a useful tool to measure MNTs in sheep.
The effects of visitor density on sika deer(Cervus nippon)behaviour in Zhu-Yu-Wan Park, China
Authors: Shen-Jin L , Todd PA , Yan Y , Lin Y , Hongmei F , Wan-Hong W
Published: January 2023

Visitors to zoos are a source of potential stress to certain captive-housed animals. Much research has focused on Europe and America, whereas the effect of human audiences on the behaviour of captive animals in Chinese parks has so far not been investigated. Sika deer(Cervus nippon)housed in Zhu-Yu-Wan Park, Yangzhou City, Jiangsu Province, China, were studied to determine the effect of different visitor density levels on the animals’ activity. From June 21 to December 10, 2006, and again from February 21 to July 10, 2007, 21 subjects were observed for 10 h per week for a total of 44 weeks. Continuous focal animal sampling was used to quantify behaviours, and visitor density was recorded every minute. Friedman's tests were used to examine the effects of visitor density on the behaviour of sika deer. Results showed that high visitor density was significantly related to foraging, resting, watching and ‘non-visible’ behaviours. The findings demonstrate that high numbers of visitors have an effect on the welfare of sika deer.
Nest provision influences reproductive success in breeding blue fox vixens: a preliminary study
Authors: Pyykönen T , Ahola L , Hänninen S , Mononen J
Published: January 2023

The aim of the present study was to evaluate the effects of an unfamiliar nest and environmental enrichment, ie provision of an additional nest, on farmed blue fox (Alopex lagopus) vixens’ reproductive performance. Two experimental groups were evaluated in the study: i) a single nest (SN) group where vixens had an unfamiliar top nest only, and ii) a group with two nests (TN), an unfamiliar top nest and a familiar floor nest. Since reproductive performance is typically lower in young blue fox vixens, half of the experimental animals consisted of primiparous vixens, to examine whether an unfamiliar and an additional nest affected primiparous and multiparous vixens’ reproduction differently. No significant differences were found in reproductive performance between the experimental groups or between the primiparous and the multiparous vixens with the number of weaned cubs per inseminated vixen 4.8 (± 4.0) and 4.9 (± 4.5) for the primiparous and 5.6 (± 4.9) and 5.5 (± 4.6) for the multiparous vixens in SN and TN groups, respectively. In the multiparous vixens, the cub losses were higher in SN than in TN groups. The higher cub loss in the SN group may have been due to the lack of a familiar nest. In the TN group, where vixens had the opportunity to choose between two nest types, the majority (86%) of the primiparous vixens whelped in the floor nest, whereas the majority (73%) of the multiparous vixens favoured the unfamiliar top nest for whelping. Both nests were used by 43% of all TN vixens, a finding that indicates that an additional nest may have an enrichment value for blue fox vixens. The potential welfare consequences of providing blue fox vixens with an additional nest box should be investigated in future studies.
The conservation-welfare nexus in reintroduction programmes: a role for sensory ecology
Authors: Swaisgood RR
Published: January 2023

Since reintroduction programmes involve moving animals from captive or wild environments and releasing them into novel environments, there are sure to be a number of challenges to the welfare of the individuals involved. Behavioural theory can help us develop reintroductions that are better for both the welfare of the individual and the conservation of populations. In addition to modifying captive environments to prepare animals for release to the wild, it is possible to modify the animals’ experience in the post-release environment. For releases to be more successful, they need to better accommodate the ecological and psychological needs of individuals. A better understanding of sensory ecology — how animals acquire and respond to information in their environment — is needed to develop new, more successful management strategies for reintroductions. Sensory ecology integrates ecological and psychological processes, calling for better synergy among researchers with divergent backgrounds in conservation and animal welfare science. This integrative approach leads to new topics of investigation in reintroduction biology, including more careful consideration of post-release stress and the role of social support. Reintroductions are essentially exercises in ‘forced’ dispersal; thus, an especially promising avenue of research is the role of proximate mechanisms governing dispersal and habitat selection decisions. Reintroduction biologists have much to gain from the study of mechanism because mechanisms, unlike function or adaptive value, can be manipulated to enhance conservation and welfare goals.
Aquaculture and restocking: implications for conservation and welfare
Authors: Braithwaite VA , Salvanes AGV
Published: January 2023

As the harvesting of fish through commercial fisheries becomes both harder and less economically viable, the world is becoming increasingly dependent on aquaculture to provide fish for human consumption. The closely related activity of stock enhancement, whereby large numbers of fish are reared and then released, is a common practice aimed at increasing the numbers of fish in rivers and along coasts. Aquaculture and stock enhancement practices raise a number of welfare and conservation issues both for fish that are reared within captivity, and for the local populations and habitats that are influenced by fish-rearing activities. In this review, we illustrate how fish farms and hatcheries have directly affected fish welfare. Examples cover on-farm fish husbandry and healthcare, the interactions between farmed and wild fish, and survival of fish released for stock enhancement. These aspects are often intertwined with important conservation issues. Thus, we also review direct effects that aquaculture-generated pollution can have on local habitats, issues associated with feeding reared fish, and problems created by alien fish (either escapees or intentionally released fish). While awareness of fish welfare is certainly growing, so is the rate at which fish are reared. There is, therefore, a pressing need to understand the welfare and conservation issues that are affected by aquaculture and stock enhancement.
Haematological and biochemical responses of red foxes(Vulpes vulpes)to different capture methods and shooting
Authors: Marks CA
Published: January 2023

This paper sought to determine whether common haematology and blood biochemistry values might assist in determining the relative welfare outcomes arising from the capture of red foxes(Vulpes vulpes)by treadle-snares, Victor Soft Catch® (VSC) #3 traps, cage traps, netting and sampling by shooting. Compared to all other capture methods and shooting, treadle-snared foxes had significantly higher mean albumin (ALB), creatine kinase (CK), red cell count (RCC), neutrophil to lymphocyte (N:L) ratio, sodium (Na), total protein (TP), white cell counts (WCC) and lower glucose (Gl). Treadle-snares were also associated with higher chloride (Cl), haemoglobin (Hb) and packed cell volume (PCV) than cage trapping and netting. Treadle-snares produced indicators of possible muscle damage, exertion and dehydration compared to cage and VSC traps. Cage trapping and netting produced lower indications of exertion, possible muscle damage and dehydration compared to both treadle-snares and VSC traps. These data do not support previous conclusions that due to similar injury scores, treadle-snares and VSC traps produced equivalent welfare outcomes. In restraining traps, injury and death sustained during capture are end-points of poor trapping welfare. Monitoring stress using physiological indicators allows the comparison of the relative potential for different capture techniques to cause pathological and pre-pathological states. As the response of physiological indicators to stress is not independent of time, accurate data on the duration of captivity and the relative intensity of struggling behaviour should be routinely collected when assessing the comparative humaneness of different trap devices.
Consumer preferences for farm animal welfare: results from a telephone survey of US households
Authors: Prickett RW , Norwood F Bailey , Lusk JL
Published: January 2023

As animal industry and animal advocacy groups debate how farm animals should be treated, little research has focused on the attitudes of consumers in the United States. This study utilises results of a representative telephone survey to measure consumer attitudes towards farm animal welfare, and investigates how these attitudes vary across individuals. The survey finds that consumers desire high standards of animal care, even if it raises food prices and involves government regulation. Support is particularly strong from females, Democrats, and residents of the Northeastern United States. To provide high standards of animal care, consumers as a whole perceive allowing animals to exhibit natural behaviours and exercise outdoors to be more important than protection from other animals, shelter, socialisation, and comfortable bedding. Consumers vary in their perceptions though, and are divided into three classes: Naturalists, Price Seekers, and Basic Welfarists. Naturalists place great importance on allowing animals to exhibit natural behaviours and exercise outdoors, and comprise 46% of the sample. Price Seekers, comprising 14% of the sample, are primarily concerned with low prices. Basic Welfarists make up 40% of the respondents, and value animal welfare but perceive it can be achieved by simply providing food, water, and treatment for injury and disease. This last group perceives amenities, such as access to outdoors and ability to exhibit natural behaviours, unimportant for the well-being of farm animals.
Morphological changes in European goldfinches (Carduelis carduelis) released by bird trappers
Authors: Domínguez J , Vidal M , Tapia L
Published: January 2023

In Spain, several Autonomous Communities have granted licenses to capture European goldfinches (Carduelis carduelis parva) during the post-breeding period, from August to December. In Galicia (NW Spain) and other Autonomous Communities, after 5-7 months of captivity, many birds are released. We tested the hypothesis that captivity results in biometric and body condition changes which affect the post-release survival of these birds. We used two groups captured in Galicia, the first made up of birds captured for ringing and the second consisting of birds captured by bird-trappers, kept in captivity for 5-7 months and then released. Two-way ANOVA tests were used to test the effect of group and sex on the wing, bill, head, tarsus and tail measurements. Birds held in captivity had shorter wings and longer bills than those captured for ringing. The significance of these morphometric changes is unknown but it is possible that they could have a detrimental effect on foraging behaviour and post-release survival. In light of this, those involved in keeping wild birds in captivity should review their husbandry techniques.
The effect of three different items of cage furniture on the behaviour of male C57BL/6J mice in the plus-maze test
Authors: Õkva K , Nevalainen T , Mauranen K , Pokk P
Published: January 2023

The aim of this study was to assess the effects of specific regimens of enrichment on the behaviour of C57BL/6J mice in the elevated plus-maze test (EPM). A total of 192 male C57BL/6J mice were allocated randomly to 32 cages. Three different items of cage furniture (CF) made of aspen — a mouse corner, nestbox and stairs — were added stepwise to different cages at intervals of one week so that the mice were exposed to an item of CF for one, two, three or four weeks. On the fifth week, all the mice were subjected to the EPM test. Overall, the presence of the nestbox or stairs for the three weeks appeared to have an anxiolytic effect on the behaviour of the mice, as evidenced by an increase in the number of entries made into the open arms and the time spent in the open arms of the EPM. The effects of these items of CF on the behaviour of the mice depended on the item used and on the duration of exposure. The items of CF that were used in this study appeared to improve the quality of life of C57BL/6J mice, as assessed using the EPM.
Clinical pathology and cardiovascular parameters are not influenced by housing rats under increased environmental complexity
Authors: Mikkelsen LF , S⊘rensen DB , Krohn T , Lauritzen B , Dragsted N , Hansen AK , Ottesen JL
Published: January 2023

Since the release of the revised Appendix A from the Council of Europe for housing of laboratory animals there have been claims that laboratory animals should be housed under more complex conditions; known popularly as enrichment. A number of studies have expressed concerns that this may increase uncontrollable variation in the animals, thereby creating the need for greater numbers of animals. Within neurobiology there would appear to be a scientific basis for such concern. However, even though this may be used as an argument for denying the animal environmental enrichment, it is unclear whether there is any basis for concern within other research areas. The aim of this study, therefore, was to explore whether clinical pathology and cardiovascular parameters were influenced by housing rats under environmentally enriched conditions. Male, Sprague-Dawley rats were housed under three different regimes: non-enriched, standard-enriched (according to the guidelines of the Council of Europe) and extra-enriched with a shelf and higher cages. All housing forms were based upon commercially available, standardised equipment. A total of 41 different parameters were monitored via clinical pathology, telemetry and coagulation tests and virtually no differences were observed in relation to the manner in which the rats were housed. The uncontrollable variation observed in our study was compared to within-strain variation data supplied from the breeder and was relatively low in all three types of housing. We conclude, based upon our studies in male, Sprague-Dawley rats, that so far there is no basis for concern that enriched housing will lead to increased group sizes when using animals for research within this field and, as such, there is no reason not to enrich the environment of such rats.
Breeding for behavioural change in farm animals: practical, economic and ethical considerations
Authors: D'Eath RB , Conington J , Lawrence AB , Olsson IAS , Sand⊘e P
Published: January 2023

In farm animal breeding, behavioural traits are rarely included in selection programmes despite their potential to improve animal production and welfare. Breeding goals have been broadened beyond production traits in most farm animal species to include health and functional traits, and opportunities exist to increase the inclusion of behaviour in breeding indices. On a technical level, breeding for behaviour presents a number of particular challenges compared to physical traits. It is much more difficult and time-consuming to directly measure behaviour in a consistent and reliable manner in order to evaluate the large numbers of animals necessary for a breeding programme. For this reason, the development and validation of proxy measures of key behavioural traits is often required. Despite these difficulties, behavioural traits have been introduced by certain breeders. For example, ease of handling is now included in some beef cattle breeding programmes. While breeding for behaviour is potentially beneficial, ethical concerns have been raised. Since animals are adapted to the environment rather than the other way around, there may be a loss of ‘naturalness’ and/or animal integrity. Some examples, such as breeding for good maternal behaviour, could enhance welfare, production and naturalness, although dilemmas emerge where improved welfare could result from breeding away from natural behaviour. Selection against certain behaviours may carry a risk of creating animals which are generally unreactive (‘zombies’), although such broad effects could be measured and controlled. Finally, breeding against behavioural measures of welfare could inadvertently result in resilient animals (‘stoics’) that do not show behavioural signs of low welfare yet may still be suffering. To prevent this, other measures of the underlying problem should be used, although cases where this is not possible remain troubling.
Genetic parameters for birth difficulty, lamb vigour and lamb sucking ability in Suffolk sheep
Authors: Macfarlane JM , Matheson SM , Dwyer CM
Published: January 2023

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.
Welfare concerns associated with pedigree dog breeding in the UK
Authors: Rooney NJ , Sargan DR
Published: January 2023

In the UK, numerous pedigree dogs of many breeds experience compromised welfare due to the direct and indirect effects of selective breeding. Many breeds are selected to have physical conformations which, although perceived by some to be desirable, have direct negative effects upon their welfare. Dogs are regularly bred whose heads are too large and pelvises too small to birth naturally or whose faces are so flat that they are unable to breathe or exercise normally. There are also many indirect effects of selective breeding for appearance, including significantly elevated prevalence of specific diseases within particular breeds. Current breeding practices can therefore result in unnecessary suffering due to pain, disability, disease and behavioural problems. In this paper, we summarise and review the current scientific evidence for such suffering, and difficulties associated with assessing the impact of current breeding practices. Limited record-keeping, lack of transparency in the breeding and showing world, and the absence of sufficient research, mean that the full extent of the problem is difficult to assess. Furthermore, the collection of data is currently unsystematic, and although there are specific case studies of individual breeds and particular disorders, relatively few have been conducted in the UK. Individual breeds each suffer from their own array of problems, so each breed's survival and improvement (in terms of health and welfare) is likely to require a different specific course of action. With 209 breeds currently registered in the UK, this makes the situation complex. We collate and present a range of suggestions which may help to improve pedigree dog welfare significantly, and prioritise these based on expert opinion.
Selective breeding in fighting dogs
Authors: McMillan FD , Reid PJ
Published: January 2023

The breeding of domestic dogs for dog fighting has resulted in numerous genetic alterations in a breed widely acknowledged to be the most successful fighting dog: the American Pit Bull Terrier (APBT). Much of the genetic foundation underlying the motivation and ability for pit fighting can be traced back to the earliest use of dogs for hunting purposes and continued through the selective breeding for use of dogs in wars and bull and bear baiting. In the development of the APBT as a fighting dog, there were two main breeding criteria. The first was, and remains, fighting success. The trait most prized by breeders of fighting dogs and considered most contributory to fighting success is ‘gameness’, which is the perseverance at a task even under extreme adversity, such as injury, pain, or fatigue. The second criterion was the absence of human-directed aggression. Since dogs are handled extensively before, during, and after the fights, dogs that showed aggression toward humans were eliminated from the gene pool. Indeed, anecdotal reports suggest that breeding may have been carried beyond that of simply selecting against human aggressiveness to a degree of enhanced affinity for humans. The result is that today's fight-bred APBT is genetically predisposed — but not predestined — to aggressiveness toward other dogs and a strong social attraction to humans. The human affinity trait is a highly valuable characteristic that ought to be preserved. With the appropriate breeding decisions, the power of genetic selection suggests that this goal, along with normalising the genetic disposition for conspecific aggressive tendencies, should be ultimately achievable.