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Kossmann H, Moess T, Breunig P. The climate impact and land use of cultivated meat: Evaluating agricultural feedstock production. PLoS One 2025; 20:e0316480. [PMID: 39841634 PMCID: PMC11753643 DOI: 10.1371/journal.pone.0316480] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2024] [Accepted: 12/11/2024] [Indexed: 01/24/2025] Open
Abstract
As global demand for meat continues to rise, alternative and sustainable methods of production are being explored. Cultivated meat (CM) is one such alternative that holds potential for sustainable production with less environmental impact. This study develops an approach to evaluate CM production based on agricultural feedstock. The specific objectives are to determine the minimum land area required to produce a certain amount of cell medium-feedstock for CM production-on agricultural land and to identify potential future land use scenarios assuming that the macro components of the cell medium are solely produced from common agricultural crops in southern Germany. A linear programming model was developed to analyze four different scenarios of CM production, considering factors such as crop rotation, nutrient sourcing, and solar energy use. The results indicate that CM production using plants as raw material for the cell medium cannot improve land use efficiency substantially compared to conventional pork production. Extraction methods, crop choice, and energy sources will strongly influence future pathways for CM. We also find that there is no substantial benefit from CM in terms of climate change mitigation when feedstock is sourced solely from plants. This study provides valuable insights into the limitations of using agricultural feedstock for sustainable CM production. The findings suggest that future research should focus on optimizing the land use efficiency of CM. This includes exploring alternatives such as sourcing cell media from precision fermentation instead of relying solely on crops, and utilizing upcycling possibilities.
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Affiliation(s)
- Hanno Kossmann
- Faculty of Agriculture, Food and Nutrition, Weihenstephan-Triesdorf University of Applied Sciences, Weidenbach, Germany
| | - Thorsten Moess
- Faculty of Agriculture, Food and Nutrition, Weihenstephan-Triesdorf University of Applied Sciences, Weidenbach, Germany
| | - Peter Breunig
- Faculty of Agriculture, Food and Nutrition, Weihenstephan-Triesdorf University of Applied Sciences, Weidenbach, Germany
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2
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Dürlinger S, Kreutzmann H, Unterweger C, Martin V, Hamar F, Knecht C, Auer A, Dimmel K, Rümenapf T, Griessler A, Voglmayr T, Maurer R, Oppeneder A, Ladinig A. Detection of PRRSV-1 in tongue fluids under experimental and field conditions and comparison of different sampling material for PRRSV sow herd monitoring. Porcine Health Manag 2024; 10:18. [PMID: 38764057 PMCID: PMC11104003 DOI: 10.1186/s40813-024-00370-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2024] [Accepted: 04/16/2024] [Indexed: 05/21/2024] Open
Abstract
BACKGROUND Infection with porcine reproductive and respiratory syndrome virus (PRRSV) leads to significant economic losses worldwide. One of the initial measures following an outbreak is to stabilise the herd and to prevent vertical transmission of PRRSV. The objective of this study was to detect PRRSV in different sampling material, both in an experimental model and on a commercial piglet producing farm, with a focus on evaluating the suitability of tongue fluid samples. RESULTS In the experimental model, PRRSV negative pregnant gilts were infected with PRRSV-1 AUT15-33 on gestation day 85 and necropsy of gilts and foetuses was performed three weeks later. 38.3% of individual foetal serum and 39.4% of individual foetal thymus samples were considered PRRSV RT-qPCR positive. Tongue fluids from individual foetuses showed a 33.0% positivity rate. PRRSV RNA was detected in all but one sample of litter-wise pooled processing fluids and tongue fluids. In the field study, the investigated farm remained PRRSV positive and unstable for five consecutive farrowing groups after the start of the sampling process. Tongue fluid samples pooled by litter in the first investigated farrowing group had a 54.5% positivity rate, with the overall highest viral load obtained in the field study. In this farrowing group, 33.3% of investigated litter-wise pooled processing fluid samples and all investigated serum samples (pools of 4-6 individuals, two piglets per litter) were considered positive. Across all investigated farrowing groups, tongue fluid samples consistently showed the highest viral load. Moreover, tongue fluid samples contained the virus in moderate amounts for the longest time compared to the other investigated sampling material. CONCLUSION It can be concluded that the viral load in individual foetuses is higher in serum or thymus compared to tongue fluid samples. However, litter-wise pooled tongue fluid samples are well-suited for detecting vertical transmission within the herd, even when the suspected prevalence of vertical transmission events is low.
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Affiliation(s)
- Sophie Dürlinger
- Clinical Department for Farm Animals and Food System Science, Clinical Centre for Population Medicine in Fish, Pig and Poultry, University of Veterinary Medicine Vienna, Veterinaerplatz 1, 1210, Vienna, Austria
| | - Heinrich Kreutzmann
- Clinical Department for Farm Animals and Food System Science, Clinical Centre for Population Medicine in Fish, Pig and Poultry, University of Veterinary Medicine Vienna, Veterinaerplatz 1, 1210, Vienna, Austria.
- GD Animal Health Service, P.O. Box 9, 7400 AA, Deventer, The Netherlands.
| | - Christine Unterweger
- Clinical Department for Farm Animals and Food System Science, Clinical Centre for Population Medicine in Fish, Pig and Poultry, University of Veterinary Medicine Vienna, Veterinaerplatz 1, 1210, Vienna, Austria
| | - Vera Martin
- Clinical Department for Farm Animals and Food System Science, Clinical Centre for Population Medicine in Fish, Pig and Poultry, University of Veterinary Medicine Vienna, Veterinaerplatz 1, 1210, Vienna, Austria
| | - Flora Hamar
- Clinical Department for Farm Animals and Food System Science, Clinical Centre for Population Medicine in Fish, Pig and Poultry, University of Veterinary Medicine Vienna, Veterinaerplatz 1, 1210, Vienna, Austria
| | - Christian Knecht
- Clinical Department for Farm Animals and Food System Science, Clinical Centre for Population Medicine in Fish, Pig and Poultry, University of Veterinary Medicine Vienna, Veterinaerplatz 1, 1210, Vienna, Austria
| | - Angelika Auer
- Department of Biological Sciences and Pathobiology, Institute of Virology, University of Veterinary Medicine Vienna, Veterinaerplatz 1, 1210, Vienna, Austria
| | - Katharina Dimmel
- Department of Biological Sciences and Pathobiology, Institute of Virology, University of Veterinary Medicine Vienna, Veterinaerplatz 1, 1210, Vienna, Austria
| | - Till Rümenapf
- Department of Biological Sciences and Pathobiology, Institute of Virology, University of Veterinary Medicine Vienna, Veterinaerplatz 1, 1210, Vienna, Austria
| | - Alfred Griessler
- Traunkreis Vet Clinic GmbH, Grossendorf 3, 4551, Ried im Traunkreis, Austria
| | - Thomas Voglmayr
- Traunkreis Vet Clinic GmbH, Grossendorf 3, 4551, Ried im Traunkreis, Austria
| | - Roland Maurer
- Traunkreis Vet Clinic GmbH, Grossendorf 3, 4551, Ried im Traunkreis, Austria
| | - Alexander Oppeneder
- Traunkreis Vet Clinic GmbH, Grossendorf 3, 4551, Ried im Traunkreis, Austria
| | - Andrea Ladinig
- Clinical Department for Farm Animals and Food System Science, Clinical Centre for Population Medicine in Fish, Pig and Poultry, University of Veterinary Medicine Vienna, Veterinaerplatz 1, 1210, Vienna, Austria
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3
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Anders S, Malzoni M, An H. Altruism and anti-anthropocentrism shape individual choice intentions for pro-environmental and ethical meat credence attributes. PLoS One 2023; 18:e0294531. [PMID: 38015982 PMCID: PMC10684090 DOI: 10.1371/journal.pone.0294531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Accepted: 11/03/2023] [Indexed: 11/30/2023] Open
Abstract
Food consumption patterns are changing as consumers are becoming more aware and interested in sustainable and ethical food production practices. The growing disconnect between primary (livestock) agriculture and society reinforces the importance of research examining the motivations behind consumer purchase behaviors. However, evidence that links latent consumer psychometric factors and observed heterogeneity in concerns for agriculture to individual food purchase intentions remains scarce. We employ large-scale survey data and an advanced Structural Equation Modelling approach to identify and estimate the direct and indirect effects of latent fundamental values and observed consumer characteristics on individuals' attitudes and purchase intentions for certified humane (CH), organic, and non-hormone added labeled meat products. Our findings suggest that human values, including self-transcendence and openness to change, drive farm animal welfare concerns and individuals' choices of certified meat products. Information and engagement in social media positively affect individuals' perceptions and concerns for farm animal welfare. Individuals guided by altruistic and anti-anthropocentric norms are more oriented towards sustainable and ethical food shopping behaviors.
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Affiliation(s)
- Sven Anders
- Department of Resource Economics and Environmental Sociology, University of Alberta, Edmonton, Alberta, Canada
| | - Marina Malzoni
- Department of Resource Economics and Environmental Sociology, University of Alberta, Edmonton, Alberta, Canada
| | - Henry An
- Department of Resource Economics and Environmental Sociology, University of Alberta, Edmonton, Alberta, Canada
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4
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Chang MY, Chao CT, Chen HS. Exploring the Impact of Human-Animal Connections and Trust in Labeling Consumers' Intentions to Buy Cage-Free Eggs: Findings from Taiwan. Foods 2023; 12:3310. [PMID: 37685241 PMCID: PMC10486878 DOI: 10.3390/foods12173310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Revised: 08/29/2023] [Accepted: 08/31/2023] [Indexed: 09/10/2023] Open
Abstract
Recently, interest in animal welfare has steadily increased, driven by a growing focus on environmental, social, and governance (ESG) issues. This trend aligns with the Sustainable Development Goals (SDGs) set by the United Nations. This underscores the importance of comprehending consumer attitudes towards products that are respectful to animal welfare. This research aims to employ the Value-Attitude-Behavior (VAB) model as a theoretical basis to explore the behavioral intentions of Taiwanese consumers to buy cage-free eggs. To provide comprehensive insights into consumer behavior in this domain, the study examines key variables such as 'human-nature connectedness', 'trust in labels', and 'attitude towards animal welfare'. By addressing an existing research gap in the literature and exploring consumer behavior in relation to animal welfare-friendly products, the research contributes to an area that has received limited attention. We gathered a total of 341 valid questionnaires for this research. Employing Structural Equation Modeling (SEM) along with Maximum Likelihood Estimation (MLE), we investigated the causal connections between variables. The study presents three key observations: First, consumers who value sustainability and ethics tend to maintain a positive perspective on free-range eggs. Second, a favorable stance towards cage-free eggs directly correlates with positive future behaviors. Lastly, label trustworthiness and a supportive view towards animal welfare heavily affect behavioral intentions in consumers. Given these insights and the growing significance of animal welfare in consumer choices, we recommend that participants in the food and livestock sector earnestly advocate for and back practices that prioritize animal well-being.
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Affiliation(s)
- Min-Yen Chang
- Department of Accounting, Jiaxing University, Jiaxing 314001, China;
| | - Ching-Tzu Chao
- Department of Health Industry Technology Management, Chung Shan Medical University, Taichung 40201, Taiwan;
| | - Han-Shen Chen
- Department of Health Industry Technology Management, Chung Shan Medical University, Taichung 40201, Taiwan;
- Department of Medical Management, Chung Shan Medical University Hospital, Taichung 40201, Taiwan
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5
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Weingarten N, Lagerkvist CJ, Meraner M, Hartmann M. Triggering cognitive dissonance with textual information and images: Data from three experiments with meat-eaters. Data Brief 2023; 48:109116. [PMID: 37101780 PMCID: PMC10123130 DOI: 10.1016/j.dib.2023.109116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Revised: 03/27/2023] [Accepted: 03/28/2023] [Indexed: 04/08/2023] Open
Abstract
This article presents data from three experiments in which we triggered and measured cognitive dissonance in meat-eaters. Cognitive dissonance is a well-established concept in the social psychology literature; however, empirical measures are scarce. In all datasets, we used textual information and/or images related to meat consumption as means to trigger cognitive dissonance. Cognitive dissonance data was collected in Study 1 with a Likert scale, whereas Study 2 and 3 used a Semantic Bipolar scale. Each experiment was programmed with Qualtrics and consisted of four conditions. Data was collected online; Study 1 utilized social media to recruit participants while Study 2 and 3 were hosted on Prolific. All datasets contain items on participants' socio-demographic background, liking of different food products, cognitive dissonance, and a measure of meat avoidance. The data can be used to analyze the effect of information provision on cognitive dissonance and meat avoidance. Moreover, the relationship between socio-demographic variables and cognitive dissonance, as well as other exploratory purposes regarding meat avoidance can be explored. Furthermore, researchers can use the data to investigate differences between Likert scales and Semantic Bipolar scales. This data is related to the paper Can images and textual information lead to meat avoidance? The mediating role of cognitive dissonance[1].
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Affiliation(s)
- Nina Weingarten
- Institute for Food and Resource Economics, Chair of Agricultural and Food Market Research, University of Bonn, Nussallee 21, Bonn 53173, Germany
| | - Carl-Johan Lagerkvist
- Department of Economics, Decision-making and Managerial Behaviour, Swedish University of Agricultural Sciences, Ulls väg 27, Uppsala 2775621, Sweden
| | - Manuela Meraner
- Institute for Food and Resource Economics, Chair of Resource and Environmental Economics Group, Nussallee 21, Bonn 53173, Germany
| | - Monika Hartmann
- Institute for Food and Resource Economics, Chair of Agricultural and Food Market Research, University of Bonn, Nussallee 21, Bonn 53173, Germany
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6
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Sebbane M, Vial C, Lamy A. A horse on your plate? A cluster analysis of French consumers hippophagy acceptance. Meat Sci 2023; 203:109220. [PMID: 37209539 DOI: 10.1016/j.meatsci.2023.109220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Revised: 04/07/2023] [Accepted: 05/06/2023] [Indexed: 05/22/2023]
Abstract
Hippophagy is a practice that is far from being consensual, even among meat eaters. Horse meat consumption remains limited or is even strongly declining in some countries such as France. However, the nutritional, organoleptic and environmental benefits of this meat invite us to consider horse meat products as a valuable alternative source of protein. This research therefore aims to identify and characterize different profiles of consumers and non-consumers of horse meat in terms of personal values, attitudes, motivations and behaviors. Based on data from a quantitative survey among 482 French meat consumers, we distinguish 4 categories of individuals: "Enthusiast", "Distant", "Aversive" and "Potential". While "Distant" and "Aversive" show a low level of acceptability towards horse meat, "Enthusiast" and "Potential" reveal characteristics that are favorable to horse meat consumption. Targeted strategies to support the horse meat market are proposed and discussed in light of these results that also provide insight into the future for meat in general.
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Affiliation(s)
- Maxime Sebbane
- MoISA, Univ Montpellier, CIRAD, CIHEAM- IAMM, INRAE, Institut Agro, IRD, Montpellier, France; Centre de recherche de l'Institut Paul Bocuse, Ecully, France.
| | - Céline Vial
- MoISA, Univ Montpellier, CIRAD, CIHEAM- IAMM, INRAE, Institut Agro, IRD, Montpellier, France; Institut Français du Cheval et de l'Equitation, pôle Développement Innovation Recherche, Saumur, France
| | - Arnaud Lamy
- MoISA, Univ Montpellier, CIRAD, CIHEAM- IAMM, INRAE, Institut Agro, IRD, Montpellier, France; Centre de recherche de l'Institut Paul Bocuse, Ecully, France
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7
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Can images and textual information lead to meat avoidance? The mediating role of cognitive dissonance. Food Qual Prefer 2023. [DOI: 10.1016/j.foodqual.2022.104747] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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8
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De Groeve B, Bleys B, Hudders L. Ideological resistance to veg*n advocacy: An identity-based motivational account. Front Psychol 2022; 13:996250. [PMID: 36533047 PMCID: PMC9749860 DOI: 10.3389/fpsyg.2022.996250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2022] [Accepted: 10/27/2022] [Indexed: 09/19/2023] Open
Abstract
Animal-based diets in Western countries are increasingly regarded as unsustainable because of their impact on human health, environmental and animal welfare. Promoting shifts toward more plant-based diets seems an effective way to avoid these harms in practice. Nevertheless, claims against the consumption of animal products contradict the ideology of the omnivorous majority known as carnism. Carnism supports animal-product consumption as a cherished social habit that is harmless and unavoidable and invalidates minorities with plant-based diets: vegetarians and vegans (veg*ns). In this theoretical review, we integrate socio-psychological and empirical literature to provide an identity-based motivational account of ideological resistance to veg*n advocacy. Advocates who argue against the consumption of animal products often make claims that it is harmful, and avoidable by making dietary changes toward veg*n diets. In response, omnivores are likely to experience a simultaneous threat to their moral identity and their identity as consumer of animal products, which may arouse motivations to rationalize animal-product consumption and to obscure harms. If omnivores engage in such motivated reasoning and motivated ignorance, this may also inform negative stereotyping and stigmatization of veg*n advocates. These "pro-carnist" and "counter-veg*n" defenses can be linked with various personal and social motivations to eat animal products (e.g., meat attachment, gender, speciesism) and reinforce commitment to and ambivalence about eating animal products. This does not mean, however, that veg*n advocates cannot exert any influence. An apparent resistance may mask indirect and private acceptance of advocates' claims, priming commitment to change behavior toward veg*n diets often at a later point in time. Based on our theoretical account, we provide directions for future research.
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Affiliation(s)
- Ben De Groeve
- Center for Persuasive Communication, Department of Communication Sciences, Ghent University, Ghent, Belgium
| | - Brent Bleys
- Department of Economics, Ghent University, Ghent, Belgium
| | - Liselot Hudders
- Center for Persuasive Communication, Department of Communication Sciences, Ghent University, Ghent, Belgium
- Department of Marketing, Innovation and Organisation, Ghent University, Ghent, Belgium
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9
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Frying nemo? Experimental evidence on anthropomorphism, animal ethics, and food choice. Appetite 2022; 173:105989. [DOI: 10.1016/j.appet.2022.105989] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Revised: 12/21/2021] [Accepted: 02/26/2022] [Indexed: 11/16/2022]
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10
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Lin-Schilstra L, Fischer AR. Paradoxical consumers in four European countries: Meat-eating justification and willingness to pay for meat from animals treated by alternatives to surgical castration. Meat Sci 2022; 188:108777. [DOI: 10.1016/j.meatsci.2022.108777] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 02/10/2022] [Accepted: 02/21/2022] [Indexed: 11/30/2022]
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11
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Literature Review on the Pre-Slaughter Welfare of Italian Heavy Pigs. Animals (Basel) 2021; 11:ani11123352. [PMID: 34944128 PMCID: PMC8697933 DOI: 10.3390/ani11123352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 11/05/2021] [Accepted: 11/22/2021] [Indexed: 11/16/2022] Open
Abstract
Simple Summary Italian heavy pigs production differs from pig farming in other countries of the world mainly due to the high body weight and age at slaughter of the animals. This implies that peculiar animal needs may be addressed to achieve a high level of animal welfare during the pre-slaughter phases. This narrative review aims to collect the available information on welfare issues of Italian heavy pigs in the pre-slaughter phases, and to highlight recent findings and knowledge gaps. Abstract This work provides a narrative review of the available information on the welfare of Italian heavy pigs in the pre-slaughter phase (transport, lairage, and stunning). The meat from these pigs is used for specific PDO (Protected Designation of Origin) products, and the production rules for these specialties require higher body weight (160–170 kg) and age (in general more than 9 months) at slaughter than in most other countries. This may lead to specific behavioral and physiological needs of pigs. The present paper summarizes the main research findings and knowledge gaps for each of the pre-slaughter phases. Studies are presented according to the four principles of the Welfare Quality assessment protocol (good feeding, good housing, good health, and appropriate behavior). The results of the literature review indicate a lack of knowledge on several aspects. Most of studies were carried out in a single slaughterhouse, making it difficult to identify risk factors and confounding effects. Moreover, animal-based measures were assessed using different protocols, reducing the possibility of comparison across studies. These findings may serve as a basis for the development of specific research studies and policies aimed at enhancing the animal welfare level and the ethical attributes of this renowned production, also in accordance with consumers’ expectations.
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12
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De Groeve B, Rosenfeld DL. Morally admirable or moralistically deplorable? A theoretical framework for understanding character judgments of vegan advocates. Appetite 2021; 168:105693. [PMID: 34509545 DOI: 10.1016/j.appet.2021.105693] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 08/28/2021] [Accepted: 09/08/2021] [Indexed: 01/08/2023]
Abstract
Over the last decade, vegan advocates have become a growing minority. By arguing against animal-product consumption and imposing the virtue-loaded call to "go vegan," advocates have posed a direct challenge to the mainstream dietary ideology (termed "carnism") in hopes of positive social change. As a consequence, while vegan advocates may be admired for their morality and commitment, they may also be derogated with moralistic traits such as arrogance and overcommitment. We call this mixed-valence perception the "vegan paradox" and propose a theoretical framework for understanding it. Next, we develop a future research agenda to test and apply our framework, and inquire vegan advocacy for ethical, health, and environmental aims. Using the perspective of the idealistic vegan advocate as a reference point, we discuss the roles of the advocate's motives for change (i.e., the effectiveness of moral persuasion), the advocate's call for change (i.e., radical versus incremental change), the target's moral and carnist identification, and source attributes of the advocate. Lastly, we qualify our framework by highlighting further conceptual and methodological considerations.
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Affiliation(s)
- Ben De Groeve
- Center for Persuasive Communication, Department of Communication Sciences, Ghent University, Belgium.
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13
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Tso R, Lim AJ, Forde CG. A Critical Appraisal of the Evidence Supporting Consumer Motivations for Alternative Proteins. Foods 2020; 10:E24. [PMID: 33374855 PMCID: PMC7823589 DOI: 10.3390/foods10010024] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Revised: 12/17/2020] [Accepted: 12/18/2020] [Indexed: 12/12/2022] Open
Abstract
Alternative proteins are receiving increased global attention. This burgeoning interest in plants (especially plant-based meat alternatives), insects, algae, and cultured meat has been attributed to their reported health benefits, lower environmental impact and improved animal welfare compared to conventional animal-based meat. Food producers and the media are promoting acceptance of these products, claiming superior nutritional, environmental and ethical credentials and a desirable novel sensory experience. However, the evidence supporting these claims remains unclear. In this review, we summarise the main evidence underlying the nutritional, sensorial, economical, ethical, and environmental reasons reported for the rise in consumer demand for alternative proteins. We found many of these reasons to lack a strong evidence base. For instance, evidence is emerging for the nutritional benefits of plant-based meat alternatives, but present claims are largely based on established evidence for plant-based diets. Significant research gaps remain, especially longitudinal evidence on the sustained effects of replacing conventional animal-based proteins with alternative sources. For many alternative proteins, challenges exist in achieving desirable sensory properties akin to animal-based meat to promote their acceptance by consumers. Overall, fundamental shifts in the food system are required to create a culture in which healthful and sustainable food choices are the norm.
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Affiliation(s)
- Rachel Tso
- Clinical Nutrition Research Centre (CNRC), Singapore Institute for Food and Biotechnology Innovation (SIFBI), Agency for Science, Technology and Research (A*STAR), Singapore 117599, Singapore; (R.T.); (A.J.L.)
| | - Amanda JiaYing Lim
- Clinical Nutrition Research Centre (CNRC), Singapore Institute for Food and Biotechnology Innovation (SIFBI), Agency for Science, Technology and Research (A*STAR), Singapore 117599, Singapore; (R.T.); (A.J.L.)
| | - Ciarán G. Forde
- Clinical Nutrition Research Centre (CNRC), Singapore Institute for Food and Biotechnology Innovation (SIFBI), Agency for Science, Technology and Research (A*STAR), Singapore 117599, Singapore; (R.T.); (A.J.L.)
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117593, Singapore
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