Negative Welfare Research Articles

Social isolation of unfamiliar cattle by groups of familiar cattle.

Domestic herbivores show a strong motivation to form associations with conspecifics and the social dynamics of any group is dependant on the individuals within the group. Thus, common farm management practices such mixing may cause social disruption. Social integration of new group members has previously been defined as a lack of aggressive interactions within the group. However, a lack of aggression among group members may not represent full integration into the social group. Here we observe the impact of disrupting groups of cattle via the introduction of an unfamiliar individual, on the social network patterns of six groups of cattle. Cattle contacts between all individuals in a group were recorded before and after the introduction of the unfamiliar individual. Pre-introduction, resident cattle showed preferential associations with specific individuals in the group. Post-introduction, resident cattle reduced the strength of their contacts (e.g., frequency) with each other relative to the pre-introduction phase. Unfamiliar individuals were socially isolated from the group throughout the trial. The observed social contact patterns suggest that new group members are socially isolated from established groups longer than previously thought, and common farm mixing practices may have negative welfare consequences on introduced individuals.

Exploring synchrony of lying on commercial dairy farms in relation to management

Synchronous lying may be an indicator of positive welfare in dairy cows. However, little is known about whether farms differ in the level of lying synchrony and how consistent this is within a farm. Moreover, the level of synchrony may vary within the day. Accelerometers used for estrus detection of cows enable continuous monitoring of synchronous lying of herds. We studied the level, timing and duration of synchronous lying in 8 Holstein Friesian or Holstein dairy herds across 1 year, in relation to grazing and milking management (robotic milking, 2x and 3x daily milking). In ‘winter’ months (November-March), herds were housed; in ‘summer’ months (May-September), 6 of 8 herds had access to pasture for 5–8 h per day, the other 2 herds were full-time housed. April and October were excluded because of variable management. Herds had 0.9–1.4 cubicles available per cow. After cleaning individual accelerometer data, herd average lying time was computed per 15-min (900 s) interval. An interval was defined as synchronous lying when the herd average lying time > 540 or > 630 s (i.e. assuming 60% or 70% of the herd was lying). Daily synchronous lying time was defined as the number of synchronous intervals × 15 min. A general linear model was used to assess effects of farm, season, and their interaction on synchronous lying time per day; with Tukey-adjusted pairwise comparisons. Correlations were made per farm per season to assess the association between total daily lying time and synchronous lying time. Across all herds and calendar days, the highest level of synchrony reached was on average 78%. Most synchronous lying occurred between 2AM and 6AM, though this was not true for all farms. Synchronous lying occurred least between 4 and 8 PM. Across farms, average synchronous (60% threshold) lying time per day was 5.9 h in summer (range: 2.7 – 7.9 h) and 5.5 h in winter (range: 1.6 – 9.1 h). In 3 out of 6 farms with grazing, synchronous lying time was higher in summer due to occurrence of synchronous lying during periods with pasture access. On 2 farms, synchronous lying time was higher in winter than summer due to increased synchronous lying at night. Across farms, average daily lying time and synchronous lying time generally showed moderate correlations. Monitoring synchronous lying in dairy herds using accelerometers was feasible, and 24-h synchrony patterns seemed consistent within farms. Its validity as a positive or negative welfare indicator requires further study.

"Just old age" - a qualitative investigation of owner and veterinary professional experiences of and attitudes to ageing in dogs in the UK.

Many UK dogs live into old age, but owners may not recognise or report age-associated signs of disease which lead to negative welfare. This study investigated dog owner and veterinary professional experiences and attitudes towards ageing in dogs, how health care is offered, barriers to its delivery, and some best-practice solutions. In-depth semi-structured interviews were conducted with 15 owners of 21 dogs (aged 8 to 17 years mean: 13) and 11 veterinary professional (eight veterinary surgeons, two nurses and one physiotherapist). Open-text responses from 61 dog owners were collected using an online survey. Transcripts and survey responses were inductively coded into themes. Four themes were constructed: "just old age", barriers to care, trust in veterinary surgeons, and tools to improve health care. Age-related changes were mostly perceived as "just old age" by dog owners. Many dogs were no longer vaccinated and did not attend check-ups unless owners identified a problem. The greatest barriers to health care were finances (dog owners), owner awareness, willingness to act and consultation time (veterinary professionals). Trust in veterinary professionals was more likely when dog owner experienced continuity, prioritisation of care, clear communication and an accessible, knowledgeable and empathic veterinary professional. Participants suggested that senior health care and communication between dog owners and veterinary professionals could be improved through questionnaires, and evidence-based online information. Opportunities to educate owners on which clinical signs represent healthy or pathological ageing are being missed. Resources should be developed to guide on best-practice discussions in consultations, encourage more owners to recognise clinical signs and to seek and trust veterinary advice.

National Dog Survey: Describing UK Dog and Ownership Demographics

With dogs being the most commonly owned companion animal in the United Kingdom, knowledge about dog demographics is important in understanding the impact of dogs on society. Furthermore, understanding the demography of dog owners is also important to better target support to dogs and their owners to achieve optimal welfare in the canine population. Combining natural fluctuations in the population and unprecedented events such as the COVID-19 pandemic, the need for an up-to-date large-scale dataset is even more paramount. In order to address this, Dogs Trust launched the 'National Dog Survey' to provide a large population-level dataset that will help identify key areas of concern and needs of owners and their dogs. The online survey was completed by a total of 354,046 respondents owning dogs in the UK, providing data for 440,423 dogs. The results of this study highlight dog demographics, including acquisition and veterinary factors, as well as owner demographic and household information. Finally, general trends in ownership, and more specifically those following the COVID-19 pandemic, are described. This paper's findings provide valuable insight into the current population of dogs and their owners in the UK, allowing for the most appropriate products, services, interventions and regulations to be developed, reducing the likelihood of negative welfare outcomes such as health and behaviour issues, relinquishment or euthanasia. Furthermore, with significant changes to the dog population following the COVID-19 pandemic highlighted, this dataset serves as an up-to-date baseline for future study comparisons to continue to monitor trends and patterns of the dog population and dog owners going forwards.

Effects of external ambient temperature at loading, journey duration and flock characteristics on the dead-on-arrival rate in broiler chickens transported to slaughter in Great Britain

Broiler mortality during transport and lairage, prior to slaughter, has negative welfare and economic implications. Knowledge of the factors affecting the dead-on-arrival (DOA) rate can help identify risk-mitigating strategies. The objectives of this study were to determine the DOA rate in broiler chickens transported to slaughter in Great Britain and associated risk factors. Requested data for all loads of broilers transported to slaughter by 5 large British commercial companies on 57 randomly-selected dates in 2019 were obtained and combined with weather data extracted from the Met Office MIDAS Open database. The DOA rate was described overall and per load using summary descriptive statistics. Mixed-effects Poisson regression was used to evaluate considered flock-, journey- and weather-related risk factors. Results were reported as incidence rate ratios (IRR) and 95% confidence intervals (CI). On the selected dates, 25,476 loads transported 146,219,189 broilers to slaughter. The overall mean DOA rate was 0.08%. The median DOA rate per load was 0.06% (interquartile range 0.03-0.09%; range 0.00-17.39%). Multiple risk factors were identified including loading temperature and catch method. At relative humidity ≤80%, the DOA rate was 16.89 (95% CI 15.25-18.70, P < 0.001) times higher for loads loaded in external ambient temperatures >30.0°C compared to those loaded in temperatures between 10.1°C and 15.0°C. When relative humidity was >80%, there was a 43% increase in DOA rate for loads loaded in temperatures below freezing compared to those loaded in temperatures between 10.1°C and 15.0°C (IRR 1.43, 95% CI 1.35-1.52, P < 0.001). The DOA rate was 32% higher for loads caught mechanically compared to those caught manually (IRR 1.32, 95% CI 1.23-1.42, P < 0.001). The overall DOA rate was lower than that previously reported in Great Britain and for other European countries. Most identified risk factors had a marginal effect, however, loading temperatures >30°C substantially increased DOA rate. Internal thermal environmental conditions were not evaluated. Avoidance of loading during periods of hot weather would improve the welfare of, and reduce economic losses in, broiler chickens.

Market-dependent preferences, positive and negative network effects and welfare

This article specifies the conditions on the utility function and on the cost function for which congestion or production overcapacity emerge in a market when information is perfect and prices are flexible. Consumers are of two types: Some appreciate a large production market, some do not. A typology underlines the shape of utility functions and cost functions which generate an optimal production overcapacity or an optimal congestion at the pure strategy Nash equilibrium. We show that the sign of the consumption externalities is endogenous. The result is independent of the nature (positive or negative) of the consumption externalities that affect the consumers’ preferences. A welfare analysis is performed. We underline the conditions under which the social planner chooses whether to clear the market or not. Application to a network economy is developed. Extensions to the following three cases are provided: (1) unsold stocks of goods with or without warehouse inventories, (2) quality of goods and (3) software markets.

A user-generated content analysis of tourists at wildlife tourism attractions

IntroductionCaptive wildlife tourism is an increasingly complex subsector of ecotourism due to the varying degrees of care given to the animals, interpretation or education provided, and tourist expectations of potential interaction with the animals. Two recent tourism trends are the growing wildlife tourism sphere of ecotourism and the increased use of social media in both marketing and for tourists to share their experiences. In scientific literature, the connection between social media and tourism was largely under-studied, and tourist behavior on Instagram after visiting wildlife tourism attractions (WTAs) has not been studied. Some researchers call for more tourism research using social media data created by tourists, called user-generated content (UGC), to understand tourist behaviors.MethodsThis netnographic study examines tourists who visited a WTAs by analyzing their post-visit photos and captions on Instagram through the lens of involvement theory to evaluate the strength of their connection to wildlife and conservation. Previous research indicated wildlife tourism can have extraordinary benefits to conservation and communities, but some WTAs, some of which are photo-prop tourism attractions where animals are handed over to tourists for close-contact selfies, produce negative impacts on individual animals and entire species due to illegal sourcing, improper care, human interaction, and habituation.ResultsFindings from this study suggest WTAs with good or excellent conservation and welfare practices were found to lead to more highly involved tourists, ultimately benefitting community investment, animal welfare, and conservation efforts via the flow of tourist dollars and spread of information on social media, the tourist changing their behavior, or all the aforementioned. Conversely, WTAs with negative conservation and welfare practices were found not to foster the same level of tourist involvement as their counterparts, often leading to more anthropocentric Instagram posts that do not spread conservation messaging or imply appropriate tourist-animal interactions.DiscussionThe implications from this research suggest that WTA management practices should move toward a model focusing on conservation-themed interpretation, education, and positive animal welfare for the improvement of conservation efforts within wildlife and eco-tourism. Such models should keep up with evolving sustainability, responsible, and regenerative practices adopted by the tourism and outdoor recreation industry.

Optimal delivery time and subsidy for IT-enabled food delivery platforms considering negative externality and social welfare

PurposeInformation technology-enabled gig platforms connect freelancers with consumers to provide short-term services or asset sharing. The growth of gig economy, however, has been accompanied by controversy, and, recently, food delivery platforms have been criticized for using data-driven techniques to set strict delivery time limits, resulting in negative externality. This study aims to provide managerial implications on the decisions of delivery time and subsidy for food delivery platforms.Design/methodology/approachThe authors develop an analytical framework to investigate the optimal delivery time and subsidy provided to delivery drivers to maximize the gig platform's profit and compare the results with those of a socially optimal outcome.FindingsThe study reveals that it is optimal for the platform to shorten the delivery time and raise the subsidy when the food price becomes higher; nevertheless, the platform should shorten the delivery time and lower the subsidy in response to a higher delivery fee. Increases in the food price or delivery fee have non-monotonic effects on the number of fulfilled orders and the platform's profit. In addition, the authors solve the socially optimal outcome and find that a socially optimal delivery time is longer than the platform's preferred length when the delivery fee is high and the negative externality is strong.Originality/valueThe food delivery platform's optimal decision on delivery time is derived after taking negative externality into account, which is rarely considered in the prior literature but is a practically important problem.

Effects of enclosure complexity and visitor presence on the welfare of Asiatic lions

In recent years, there has been much research into the individual effects of enclosure complexity and visitor presence on captive animal welfare. However, the inter-linkages between enclosure complexity and visitor presence and their combined influence on the welfare of large carnivores like Asiatic lions (Panthera leo persica) remains poorly understood. We compared the welfare status of 41 Asiatic lions housed in three types of enclosure, viz., off-display (N = 17), zoo-safari (N = 4), and on-display (N = 2) at Sakkarbaug zoological park. We scored enclosures based on their species-appropriateness of their design and levels of exposure to visitors. To measure the welfare impacts, we recorded the behaviour patterns of captive Asiatic lions between March 2015-January 2016, spanning 30 observation days per animal. We recorded both positive and negative welfare markers for study subjects, viz., behaviour diversity, spread of participation index, along with measures of stereotypy, and the activity budget of the study subjects. Zoo-safari and off-display enclosures were more feature-rich and species-appropriate than the on-display enclosures. On-display enclosures had significantly higher levels of visitor presence as compared to zoo-safari enclosures, while the off-display enclosures had no visitors. Zoo-safari and off-display enclosures accorded captive Asiatic lions sufficient withdrawal areas, which was unavailable at the on-display enclosures. Subjects housed at off-display and zoo-safari enclosures had similar behaviour patterns and welfare indices (species-typical behaviour diversity, enclosure usage patterns, and aberrant repetitive behaviours). In contrast, the behavioural welfare indices differed significantly across visitor levels in the low-complexity on-display enclosures. Animals housed in high complexity enclosures with minimal (zoo-safari) or no visitor presence (off-display) display overall better levels of positive welfare markers(behaviour diversity and uniform enclosure usage) than animals housed in low complexity enclosures with high visitor presence. Therefore, Asiatic lions housed in poorly designed on-display enclosures do not have access to the complex, feature-rich, large enclosures available to their conspecifics housed in the off-display and zoo-safari enclosures. Our results indicate that enclosure complexity is the most important factor affecting most of the welfare markers recorded in this study, while visitor presence primarily affected enclosure usage. Our findings showcase the importance of enclosure complexity and novelty in preventing and offsetting the repercussions of captivity and visitor presence in Asiatic lions.

Housing in Medicaid: Should It Really Change?

Housing is mostly exempted from Medicaid and Supplemental Social Insurance means tests. Reforms of this special treatment have been debated, but little is known about its costs, benefits, and redistributive implications. I estimate a life cycle model of single retirees accounting for this exemption. It shows that the homestead exemption explains important patterns of Medicaid recipiency and that it is highly valued. It also shows that estate recovery could cover most of its costs with possibly limited negative welfare consequences. Finally, the model predicts that removing the homestead exemption or enforcing estate recovery programs would reduce redistribution toward lower-income retirees. (JEL D15, G51, H51, I13, I18, I38, J26)

Access to Multiple Habitats Improves Welfare: A Case Study of Two Zoo-Housed Black Bears (Ursus americanus)

Using various forms of enrichment, animal care specialists encourage species-specific behaviors and discourage stereotypic behaviors. Within the zoo community, bears (Ursids spp.) are commonly housed, yet are prone to exhibiting stress-related behaviors. Here, we assess the effect of access to multiple habitats, including areas of off guest view, on the welfare of two American black bears (U. americanus) housed at the North Carolina Zoo. In this study, we looked at two behaviors, pacing and foraging to represent negative and positive welfare indicators. We performed logistic regressions to model the effect of access on these behaviors. Because having an animal visible to guests is important to consider when creating management plans, we also explored the effect of access on the bears’ visibility. We found that full access reduced the likelihood of pacing by an average of 13% and increased the likelihood of foraging by an average of 5%. Access to multiple areas reduced the probability of visibility by 57% for one individual but did not impact visibility of the other bear. This case study suggests the value of access to zoo animal welfare and should incite future research aimed at exploring the effects of access on various behavioral outcomes.

Adapting to water restrictions: Intensive versus extensive adaptation over time differentiated by water right seniority

AbstractThis study explores farmers' adjustments to their water use when faced with water restrictions, distinguishing between intensive and extensive adjustments and examining adaptation over time. Specifically, the study uses a difference‐in‐differences framework to explore the effect of a groundwater restriction on irrigation management strategies. In 1992, the Kansas Department of Agriculture created an Intensive Groundwater Use Control Area to improve streamflow in Walnut Creek, which feeds water to a highly important migration point on the mid‐continent flyway. The program allocates permission to extract groundwater in 5‐year allotments. The stringency of the program's restriction depends on the seniority of the water right. We find significant reductions in water use along the intensive margin for senior water rights and along both the intensive and extensive margins for junior water rights. The results indicate significant reductions in water use that imply negative welfare impacts on farmers. We also find evidence of dynamically optimal behavior within each 5‐year allotment period.

Broken tails in Holstein dairy cattle: A cross-sectional study

Dairy cows are regularly handled when moved to the milking parlor and during other routine procedures. Low-stress handling methods are important in avoiding negative welfare states for dairy cattle. Tail twisting is used by some handlers to prompt cattle movement. However, when used inappropriately with excessive force, tail twisting can lead to a broken tail. The aim of this cross-sectional study was to determine cow-level factors that may be associated with the prevalence of broken tails in dairy cattle. A subset of 229 Holstein dairy cows (68 primiparous and 161 multiparous) at a single dairy were assessed for broken tails from the larger herd (N = 1,356). Tails were visually assessed for the presence of fractures by a single trained observer. A tail was classified as unfractured if it laid straight when at rest and as fractured if there were deviations in the tail when at rest. Poisson regression models were used to identify associations between cow-level characteristics and broken tails and compute adjusted prevalence ratios (PR). The prevalence of broken tails was 45.8% (105/229) at the time of assessment. Multiparous cows had a greater prevalence of broken tails than primiparous cows [PR = 1.70; 95% confidence interval (CI): 1.11–2.59]. The prevalence of broken tails was also greater for cows treated for mastitis ≥2 times than cows treated once for mastitis (PR = 1.84; 95% CI: 1.08–3.13) and cows never treated for mastitis (PR = 1.36; 95% CI: 1.02–1.82). Results from this study indicated that the longer a cow was present on the farm and the more times she was treated for mastitis, the more likely she was to experience a broken tail. These findings suggest that the relationship between dairy cow handling, health, and welfare is a multifactorial issue.

Growth and optimal policies in an R&amp;D‐growth model with imperfect international capital mobility

AbstractIn this paper, we examine the effects of international capital mobility on innovation, growth, and optimal growth policies in a small open economy with R&amp;D‐driven growth. Households can borrow funds from an imperfect international capital market to finance their investment in R&amp;D firms. We show that the economy can reach a higher growth rate if international capital is more mobile. This result is consistent with recent empirical findings. Moreover, we show that the common growth‐enhancing policies, such as patent protection and the R&amp;D subsidies, have an additional negative welfare effect when households can access the international capital market. Accordingly, the optimal patent protection and R&amp;D subsidy should be smaller when the degree of international capital mobility is higher.

Unequal growth

Over the past 50 years, households in the United States have experienced changes in earnings dynamics that have resulted in a large increase in inequality. This paper assesses the impact of these changes on aggregate growth and welfare. We begin by inspecting a simple statistical decomposition of aggregate earnings growth using data from the Panel Study of Income Dynamics for the period 1967–2018. The decomposition expresses aggregate earnings growth as the sum of two terms. The first is the covariance between the level and growth of household earnings, which depends only on micro earnings dynamics. The second is the average growth across households, which depends on both micro and macro factors, such as a common labor productivity growth. In order to identify the impact of the changes in the micro dynamics on aggregate outcomes, we map a simple model of micro-founded growth onto the terms of the decomposition. We find that changes in households’ earnings dynamics that are consistent with the micro data imply unequal growth across the earnings distribution that is, a transition period during which there is a change in the shape of the distribution of incomes that is not mean preserving, so that aggregate growth is affected. This change yields a positive effect on aggregate growth and, with incomplete markets, an ex-ante negative welfare effect.

Play and welfare in domestic cats: Current knowledge and future directions

AbstractPlay and welfare have long been linked within animal research literature, with play considered as both a potential indicator and promoter of welfare. An indicator due to observations that play is exhibited most frequently in times when an animal's fitness is not under threat and when immediate needs such as food, water and adequate space are met. And a promoter, because of observations that animals who play more also have better welfare outcomes. However, limited research has been undertaken to investigate this link, especially in companion animals. The domestic cat(Felis catus)is one of the most popular companion animals in the world, yet little is known about the impact of play behaviour on cat welfare. We review the current literature on play and welfare in cats. This includes examining the role of cat play in mitigating negative welfare outcomes, such as reducing problem behaviours, one of the leading reasons for guardian dissatisfaction and cat relinquishment to shelters. Play is also discussed as a potential tool to provide environmental enrichment and to improve cat-human relationships. Future areas for research are suggested. We find that further research is needed that uses a multi-faceted approach to assess how quantity, type and quality of play impact subsequent cat behaviour and welfare. Future research could also assess cat play needs and preferences as well as investigate the role of play in mitigating threats to cat welfare such as reducing problem behaviour and improving human-cat relationships. If play is an indicator and promoter of welfare, studies into the impact of play may offer an accessible approach for monitoring and improving domestic cat welfare.

Patents, industry control, and the rise of the giant American corporation

We examine how some early corporations used patents to control competition, thus creating monopoly or cartel positions, with super-normal profits. We thus highlight one economic rationale for the rise of the giant corporation, expanding the Chandlerian paradigm. Based on evidence from the House of Representatives', 1912 “Oldfield hearings” and three industry case studies, we demonstrate how patent pools and restrictive licensing of fundamental patents led to the stifling of innovation and to negative competition and welfare effects. Focusing on pooling and licensing agreements is particularly important, as these, unlike patents themselves, are not normally open to public scrutiny.

Effect of water temperature and exposure duration on detachment rate of salmon lice (Lepeophtheirus salmonis); testing the relevant thermal spectrum used for delousing

Thermal delousing has become the most applied method for treatment against salmon lice. However, the temperature range used is strongly aversive for salmonids, and the method is associated with increased mortality. Treatment temperature × duration combinations should be tailored to maximise delousing efficiency and minimize welfare impacts on the host fish. We tested the detachment rate of sessile, pre-adult and adult male and female salmon lice (Lepeophtheirus salmonis) as a function of ambient temperature (11–16 °C), exposure temperature (28–36 °C), and exposure duration (0–120 s). Dead Atlantic salmon (Salmo salar) hosts were used to avoid negative fish welfare and detachment of lice due to fish behaviour. Within the range tested, higher exposure temperatures were associated with higher detachment rates among pre-adult and adult lice, while no sessile lice detached at any temperature. Moreover, no treatment combination detached 100% of lice of any stage, and at 28 °C, detachment of adult females was negligible. Most detachments occurred within the first 30 s of exposure. We conclude that for a given delousing efficiency, lower temperatures must be compensated for by considerably longer exposure durations. This may be a higher risk for the welfare of the host fish than higher temperatures and shorter exposure durations.

A "Good Life" for Dairy Cattle: Developing and Piloting a Framework for Assessing Positive Welfare Opportunities Based on Scientific Evidence and Farmer Expertise.

Simple SummaryThere is increasing appetite to understand how we can provide quality of life to farm animals. A framework to evaluate positive welfare opportunities for dairy cattle was developed using a participatory approach where farmer’s recommendations were integrated into a scientific framework and piloted on farm by vets. When provided with the opportunity to collaborate, farmers and scientists broadly agree on what constitutes “a good life” for dairy cattle and worked together to develop an assessment framework. Farmers did not agree equally on the value of each positive welfare opportunity. However, farmers supported positive welfare assessment as a means of recognition and reward for higher animal welfare, within existing farm assurance schemes, and to justify national and global marketing claims of higher animal welfare.On-farm welfare assessment tends to focus on minimising negative welfare, but providing positive welfare is important in order to give animals a good life. This study developed a positive welfare framework for dairy cows based on the existing scientific literature which has focused on developing positive welfare indicators, and trialled a participatory approach with farmers; refining the framework based on their recommendations, followed by a vet pilot phase on farm. The results revealed that farmers and scientists agree on what constitutes “a good life” for dairy cattle. Farmers value positive welfare because they value their cows’ quality of life, and want to be proud of their work, improve their own wellbeing as well as receive business benefits. For each good life resource, the proportion of farmers going above and beyond legislation ranged from 27 to 84%. Furthermore, barriers to achieving positive welfare opportunities, including monetary and time costs, were not apparently insurmountable if implementation costs were remunerated (by the government). However, the intrinsic value in providing such opportunities also incentivises farmers. Overall, most farmers appeared to support positive welfare assessment, with the largest proportion (50%) supporting its use within existing farm assurance schemes, or to justify national and global marketing claims. Collaborating with farmers to co-create policy is crucial to showcase and quantify the UK’s high welfare standards, and to maximise engagement, relevance and uptake of animal welfare policy, to ensure continuous improvement and leadership in the quality of lives for farm animals.

PSIV-A-1 Assessment of Equine Acclimation to new Management Using non-Invasive Metrics

Abstract Horses experience stress during transportation, handling, and changes to the environment which result in negative welfare for the animal. Finding valid methods to measure stress non-invasively can assist in understanding equine welfare. Our objective was to investigate equine stress to a new environment through non-invasive measures. We hypothesized that horses’ stress would decrease over time with repeated exposure to a single handler and novel holding stock. Seven horses were introduced to a novel farm with a week of acclimation to their stall to serve as their baseline. Blink rate, thermal imaging, and salivary cortisol were collected in the stall and again in the stock on days 2, 3, 5, 7, 10, 14, 17, 21, and 28 with d 1 being one week following arrival to the farm. Blink rate was counted for three minutes, then eye temperature of the left eye was taken using thermal imaging, and lastly salivary cortisol was collected using cotton swabs introduced into the horse’s mouth for 30 seconds on each side. Using linear regression, we found that blink rate decreased by 1.7 blinks for every day of handling (P = 0.001). For every degree of eye temperature in the stall, stock eye temperature increased 0.28 degrees Celsius showing that stress was potentially higher in the stocks (P = 0.043). Additionally, eye temperature in the stock increased by 0.09 degrees Celsius for each day of handling (P &amp;lt; 0.01). There were no differences found in salivary cortisol (P = 0.43). In conclusion, blink rate decreased but eye temperature increased over time, creating conflicting outcomes. Further studies are needed to validate the non-invasive measures of stress and their implications for horse welfare in new environments.