341 |
Exploring a simplified affective state test in the red junglefowlMunari, Alessandra January 2021 (has links)
Affective states of animals are emotions with positive or negative valance. Positive and negative affective states affect animal welfare, and can bias interpretation of information positively or negatively, respectively. Judgement bias tests measure affective states based on responses to ambiguous cues, intermediate to cues with learnt positive and negative outcomes. Responses closer to those of positive cues indicate positive affective state. However, animals need extensive training to learn initial associations to reference cues. Therefore, I here aimed to validate an alternative affective state test based on instinctive avoidance of patterns resembling eyespots. Responses to ambiguous eyespot cues similar to responses to full eyespot cues could indicate negative affective state. To test this, behavioural responses of red junglefowl (Gallus gallus) chicks to ambiguous cues from a validated judgement bias test were compared to responses to cues resembling eyespots. In a second cohort of birds, I developed simplified tests with only one ambiguous cue in each tests. I predicted that responses in both tests would correlate positively. In the original tests, shorter distance and latency to approach ambiguous cues correlated positively with latency to approach one of the eyespot cues, a full eyespot cue. This pattern was only observed in females. In the simplified tests, at 4 weeks of age, shortest latency to approach cues correlated among tests. This pattern was not observed when chicks were tested at 2 weeks of age. Overall, the eyespot test is a promising alternative affective state test, but further studies exploring sex- and age-effects, are needed.
|
342 |
Measuring the effect of facility relocation on the welfare of California sea lions (<i>Zalophus californianus</i>)Winans, Madeline Marie January 2021 (has links)
No description available.
|
343 |
Edible Environmental Enrichments in Littered Housing Systems: Do Their Effects on Integument Condition Differ Between Commercial Laying Hen Strains?Schreiter, Ruben, Damme, Klaus, Freick, Markus 23 March 2022 (has links)
The aim of this study was to investigate the effect of additional enrichment materials (EMs; pecking stones and alfalfa bales) on the occurrence of plumage damage, skin injuries, and toe injuries, with an emphasis on the possible differences between commercial hybrid strains of laying hens. During rearing (weeks 1–18, 16 compartments, 4000 pullets) and laying periods (weeks 21–72, 24 compartments, 2808 hens) in a littered housing system, EMs were permanently provided to the study groups (EXP), while control groups (CON) did not receive additional EM. In a two-factorial study design (two groups with four strains) with 351 hens per variant, the brown egg-laying Lohmann Brown classic (LB) and Bovans Brown (BB) strains as well as the white egg-laying Lohmann Selected Leghorn classic (LSL) and Dekalb White (DW) strains were investigated. Compared to the CON, the EXP showed reduced body mass during rearing (p < 0.001) and reduced albumen consistency in the laying period (p < 0.001). Regarding integument condition, the LSL in the EXP showed more toe injuries than in the CON (p = 0.018). Remarkably, genotype-environment interactions between strains and groups were evident (p < 0.001). In groups with an EM supply, plumage damage decreased in LB (p ≤ 0.033) and LSL (p ≤ 0.005) but increased in BB (p ≤ 0.003). Moreover, there were fewer skin injuries in LSL (p = 0.001) but more in BB (p = 0.001) in groups with access to EM. In view of the diverging effects between strains, future practical recommendations for laying hen husbandry should be strain-specific.:Introduction
Materials and Methods
Results
Discussions
Author Contributions
Funding
Acknowledgments
Conflicts of Interest
References
|
344 |
Lättare sagt än gjort : En kvalitativ studie om konsumenters etiska värderingar i förhållande till deras köpbeteende / Easier said than done : A qualitative study about consumers ethics values inrelation to their purchasing behaviourDam, Michelle, Ljungnér, Emma, Quach, Robin January 2020 (has links)
Bakgrund: Marknaden för etiska kläder växer ständigt och konsumenter bryr sig alltmer om varifrån produkterna kommer, hur de är producerade och vad det har för inverkan på miljö och djur. Syfte: Syftet med denna studie är att undersöka vilka värderingar konsumenter har kring etiskt producerat material inom modehandeln och hur konsumenter agerar i ett köpbeslut. Det finns ett behov att undersöka vilka faktorer som är avgörande i etisk konsumtion för att kunna normalisera den rådande trenden om etisk konsumtion. Forskningsfrågor: - Vilka faktorer är det som avgör konsumenternas etiska köpbeslut? - Skiljer sig konsumenters etiska värderingar från hur de agerar vid köp av skor och väskor? Metod: Det empiriska materialet är insamlat med hjälp av femton olika semistrukturerade intervjuer. De informanter som valdes var modeintresserade och var mellan åldrarna 20-27 år.Intervjuerna utfördes till största del via internet med hjälp av tjänster såsom Facebookvideo-chat och Google Meet videokommunikation. Materialet är sedan sammanställt medhjälp av en tematisk analysmetod. Materialet kodades och delades in i kategorierna: (1)köpbeteende, (2) etiska värderingar och (3) djurens välfärd. Slutsats: Studien visar att konsumenter värderar stil och image som viktigast i ett köpbeslut, därefter värde för pengarna, komfort och bekvämlighet och till sist miljö och socialt ansvarstagande. Studien visar även att konsumenters värderingar skiljer sig från deras faktiska agerande och köpbeteende. Konsumenter beskriver att de värdesätter djurens välfärd och etiska faktorer högt, men deras faktiska köpbeslut styrs främst av stil och image samt värdet för pengar. / Background: The ethical clothing industry is subject to a persistent growth, and consumers become increasingly aware of where products come from, how they are produced and how they impact the environment and animals. Purpose: The purpose of this study was to analyse which values consumers have about ethically produced materials within the fashion industry, and how consumers act in purchasing decision. It is of interest to investigate which factors are decisive in ethical consumption to normalize the trend of ethical consumption. Research questions: - Which factors are decisive in consumer ethical purchasing decisions? - Do ethical values of consumers contradict their purchasing behaviour for shoes and bags? Method: Empirical data was collected through fifteen unique semi-structured interviews. Selected interviewees defined themselves as interested in fashion and their ages ranged 20-27years old. The interviews were conducted primarily over the internet through services such as Facebook video-chat and Google Meet video communication. The material was then compiled with a thematic analytic method. The material was quantified and divided into the following three sub-categories: (1) purchasing behaviour; (2) ethical values; and (3) animal welfare. Conclusion: The study finds that consumers value style and image the most in a purchasing decision, first runner up was perceived value, second runner up was comfort, and third runner up was environmental and social responsibility. The study also concludes that the pronounced ethical values of consumers contradict their actual behaviour. Consumers state they value animal welfare and ethical factors highly, but when it comes to their actual purchasing decisions factors such as style, image and perceived value are more decisive.
|
345 |
Saving dogs from dinner plates: An analysis of Animal Welfare Organizations’ strategies to end South Korea’s dog meat trade through advocacy, civic engagement, and social changeRhodin, Hanna January 2018 (has links)
Human consumption of dog meat in South Korea has been a topic of international scrutiny since the 1980s. This paper presents the findings of a research into how Korean and international animal welfare organizations design and implement initiatives that aim to bring an end to the dog meat trade, increase civic engagement and affect social change. Fourteen animal welfare organizations’ strategies and activities were analyzed complemented by qualitative interviews with animal welfare professionals. Results were informed by the school of thought of advocacy, participatory versus diffusion approaches, social change, and civic engagement; elements often found in Communication for Development. Given the complexities inherent in measuring social change, this is largely an explorative study. Furthermore, literature on animal welfare in the field of Communication for Development is scarce; this research attempts to bridge this gap. This research finds that Korean and international animal welfare organizations have employed a multitude of different strategies and engagement of civil society to mobilize social change and bring an end to the dog meat trade in South Korea. Yet as advocates for a specific cause there are limitations in conducting fully participatory based models. Nevertheless, these efforts contribute to a holistic approach that reaches different stakeholder groups, each with unique needs and motivations, for a greater impact than the sum of each organization’s efforts on its own.
|
346 |
Species that connectWeissenegger, Karin January 2021 (has links)
People are growing older than they ever have before. My architectural proposal is a home for the elderly in a rural environment close to Stockholm.I think there is a large group of people, including me, who loves animals and recognizes their positive effect on wellbeing. I wanted to test the limits, how close the elderly and animals can live together in a functional and species-appropriate environment and to the benefit of both. Every individual on the site, Human or Non-Human, is providing care to some extent, the built environment supports these meetings and tasks in a subtle and natural way.
|
347 |
Animal Rights in Corporate Social Responsibility : Going beyond Animal Welfare in Business ContextTranova, Thanh Thanh, Matyášová, Máša January 2022 (has links)
This thesis explores the connection between animal rights (abolitionism) and corporate social responsibility (CSR) in an animal-exploiting company. Looking at how companies should treat animals has long been neglected in academic research. For this reason, the thesis investigates how animal rights, in particular, relate to Carroll's pyramid of CSR. The research adopts qualitative research methods with semi-structured interviews. Carroll's pyramid of CSR and its four dimensions are used as the theoretical framework to both direct the data gathering and analyse the information that was acquired. The thesis concludes with several major findings. Firstly, it is found that animal-exploiting businesses do not address animal rights but animal welfare in their CSR strategy. Secondly, the findings identify relations between animal rights and the four levels of Carroll’s CSR framework, namely economic, legal, ethical, and philanthropic levels. Finally, an adjusted version of the framework is developed correlating with abolitionism.
|
348 |
In Defense of Consuming Animal Products : How Human Suffering Can Justify the Consumption of Animal Products in Developed CountriesMagyari Djerdj, Dennis January 2024 (has links)
Within the area of animal ethics, there has been ongoing discussion around whether people in developed countries are justified in consuming animal based products or not, some argue that we are, and some argue that we aren't. In this paper I present a kind of middle-way position in response to the ongoing discussion, in which I argue that a decent chunk of a population in developed countries are justified in consuming certain animal products, but only so far as the exclusion of these animal based products would cause harm to the boycotter. Many of the arguments that are raised in order to defend the consumption of animal products, often rely on controversial assumptions or stances in order to make their claim. In this paper I attempt to distance myself from these types of arguments, by giving an argument that only relies on already commonly held moral beliefs that we all already take to be true, and the argument I make is therefore just an extension of a moral belief that we already have, which is that it is morally justifiable to consume animal products in order to avoid a personal harm. The claim very simply put is the following: We already believe that a person is morally justified to consume animal products from animals that yield relatively low amounts of food in order to survive, if we take this to be true, then we should also believe that a person is morally justified to consume animal products from animals that have a much greater yield of food, but where the food is used not to survive, but to avoid personal harms that stem from boycotting animal products. To give a more precise description on why the former (to survive) entails the latter (to avoid harms from boycotting) is because firstly, the amount of harm that's being done to the animal to avoid both cases is the same, and secondly, the level of harm that's being prevented by consuming the products that come from that animal are also the same. I conclude therefore, that if we want to remain morally consistent, we should accept the latter case to also be justified, which is that we are justified in consuming animal products in order to reduce a personal harm, but only so far as those harms would be prevalent if the person where to exclude animal based products from their diet.
|
349 |
Great Eggs-pectations: Understanding Markers of Stress and Welfare in Pullets Using Feeder Space and Stocking Density StressorsMeagan E Abraham (14206337) 09 December 2022 (has links)
<p> </p>
<p>Little is known about pullet stress and welfare and even less is known about pullets in cage-free housing. The studies included in this dissertation evaluated bird responses to stocking density, feeder space, and ACTH stressors in pullets. The project and procedures were reviewed and approved by the Purdue University Animal Care and Use Committee (Protocol#:2001002002 and # 1908001938). </p>
<p>Two studies of external stressors and one study of an internal stressor were applied to Lohmann LB-Lite (Brown) and Lohmann LSL-Lite (White) pullets. For both studies of an external stressor, bird-based welfare parameters included evaluation of bird appearance through feather coverage, foot condition, and keel condition; blood parameters, i.e., cholesterol, corticosterone, cortisol, NDV/IBV IgG/IgY titer, and differential WBC (%) and heterophil to lymphocyte ratio; measurements of the spleen, bursa, thymus, and liver; and production values measured through body weight, body weight uniformity, shank length, feed consumption, and feed conversion ratio (FCR). Birds were followed from 2-16 weeks of age (WOA) for the external stressors and were housed on the floor.</p>
<p>The first external stressor was applied through a 2 x 2 factorial randomized complete block design (RCBD) using Brown and White strains and two stocking densities- high (HSD) and low (LSD). Stocking densities were adjusted over time, with the ending density of 670 cm2/bird for HSD and 1352 cm2/bird for LSD at 16 WOA. Density alone affected relative bursal weight (%), with LSD generating heavier bursas. LSD also generated lower, better FCR for both white and brown strains though this difference was not statistically significant. Within a density, opposing strain effects were seen for body weight uniformity and feather coverage. White was improved at HSD while Brown was improved for LSD. </p>
<p>The second external stressor study was a 2 x 2 x 3 factorial RCBD with Brown and White, 2 feeder space allocations (3.5 or 7 cm/bird), and 3 stocking densities. The ending stocking densities were 154.45, 518.76, and 1,247.38 cm2 for the high (HSD), medium (MSD), and low (LSD) stocking density treatments, respectively, at 16 WOA. In this study, less space per bird was associated with poorer feather condition but improved FCR. Reduced feeder space was associated with elevated or worse FCR.</p>
<p>In a study of internal stressors, ten each of Lohmann LSL-Lite hens received either a saline-mannitol or synthetic human ACTH injection at 6, 17, and 26 weeks of age. Blood was collected prior to injection and 1- and 2-hours post-injection. H:L ratio, WBC differential counts, corticosterone, and cortisol were measured in blood. Albumen samples were collected to measure corticosterone and cortisol at 26 WOA only but were unaffected by treatment. Serum corticosterone and H:L ratio were also unaffected by treatment. Serum cortisol was increased 1 hour after ACTH injection at 17 and 26 WOA and percent heterophils and lymphocytes were affected by ACTH at 26 WOA indicating potential utility as a measure of stress for adult birds only. </p>
<p>The results of these studies show that pullets are resilient and resistant to several stressors. Both acute and chronic as well as internal and external stressors were tested in these studies with limited effects on the birds’ physiology, immunity, condition, or production. Feather coverage and bursal size were improved at lower stocking densities and FCR was improved at greater feeder space but the implications of these differences are unclear. Further research is needed to identify why there are reduced stress responses in pullets; it is possible that domestication or preserved evolutionary pathways explain some of the differences between pullet and adult stress responses. And while the majority of parameters were unaffected by the stressors used, the results of this study presented baseline values for Lohmann LB-Lite and Lohmann LSL-Lite pullets that will help guide future research. Additionally, the results of these studies left perhaps more questions than answers but illustrate perfectly that more research will be critical to an understanding of pullet stress and welfare.</p>
|
350 |
Fulvic acid as water additive in aquaculture / A new way to deliver an immunostimulant to juvenile fish and fish larvaeLieke, Thora 27 April 2022 (has links)
Aquakultur ist essentiell um den heutigen Bedarf an Fisch als Nahrungsmittel zu decken. Einsatz von Antibiotika und Kontaminationen mit Schadstoffen in der Vergangenheit haben das Vertrauen von Verbrauchern in Fischprodukte aus Aquakulturproduktion massiv geschwächt. Zeitgleich sind die Ansprüche der Verbraucher an Qualität, Frische und Sicherheit von Lebensmitteln, aber auch das Bewusstsein, negative Auswirkungen der Lebensmittelproduktion auf die Umwelt zu minimieren, erheblich gestiegen.
In der Dissertation wurde der Einsatz einer natürlichen organischen Substanz (Fulvosäure) auf die Fischgesundheit und das Immunsystem untersucht. Dabei wurde gezeigt, dass die Zugabe zum Haltungswasser bei Salmoniden und Cypriniden zu verbesserter Stressresistenz und einer Anregung des Immunsystems führte. Dies hilft den Tieren sich auf natürliche Weise gegen Krankheitserreger zu verteidigen, reduziert den Einsatz umweltschädlicher Therapeutika und steigert gleichzeitig das Tierwohl. Weiterhin führte der Zusatz der Fulvosäure zu einer signifikanten Verbesserung der Futterumsatzrate, was sich ebenfalls in gesteigertem Wachstum der Tiere widerspiegelte.
Huminstoffe, zu denen die Fulvosäure zählt, sind natürlicher Bestandteil aller aquatischen Ökosysteme. Die Zugabe zum Haltungswasser stellt daher nicht nur eine umweltfreundliche, sondern auch die ursprüngliche Expositionsroute mit diesen Immunstimulanzien für aquatischen Lebewesen dar. Weiterhin besteht mit diesem innovativen Ansatz erstmals die Option die extrem empfindlichen Embryo- und Larvenstadien ohne Zusatz von Antibiotika vor Krankheiten zu schützen. Zeitgleich wird der Metabolismus stimuliert und die Larven im Schlupf und Wachstum unterstützt. Da die Sterblichkeit in diesen Stadien bei über 80 % liegen kann, eröffnen die Ergebnisse der Dissertation ein immenses Potenzial den Tierschutz zu verbessern, und sowohl die Nachhaltigkeit als auch gesellschaftliche Akzeptanz und Konkurrenzfähigkeit der Aquakultur zu steigern. / Aquaculture has become imperative to cover the dietary demand for fish as food. The use of antibiotics and contaminations with harmful substances in the past have caused a lot of prejudices for fish products from aquaculture production. At the same time, consumer standards for quality, freshness and safety of food, as well as the awareness to minimize negative impacts of food production on the environment, have increased significantly.
In the dissertation, the use of a natural organic substance (fulvic acid) on the health and immune system of fish was determined. Supplementing the water resulted in improved stress resistance and a stimulation of the immune system in salmonids and cyprinids. This helps the animals to defend themselves against pathogens in a natural way, thereby reduces the use of environmentally harmful therapeutics and at the same time increases animal welfare. Furthermore, the addition of fulvic acid led to a significant improvement in feed conversion rate, which was also reflected in increased growth of the animals.
Humic substances, which include fulvic acid, are a natural component of all aquatic ecosystems. Therefore, the addition to the holding water represents not only an environmentally friendly but also the original route of exposure to these immunostimulants for aquatic organisms. Furthermore, this innovative approach provides for the first time the option to protect the extremely sensitive embryo and larval stages from disease without the need of antibiotics. At the same time, the metabolism is stimulated and larvae are supported in hatching and growth. Since the mortality in these stages can be more than 80 %, the results of the dissertation show an immense potential to improve animal welfare and to increase sustainability as well as social acceptance and competitive
|
Page generated in 0.0434 seconds