Pigs’ capacity to experience feelings and to suffer from tail lesion, ear lesion and lameness: Exploring citizens and pig farm and abattoir workers’ knowledge and perceptions

The aim of this study was to gain insight into the perceptions of pig farm and abattoir workers as well as lay citizens regarding (1) sentience and (2) positive (intelligent and friendly) and negative (gluttonous, stubborn and dirty) attributes of pigs. We also aimed to investigate the (3) knowledge and perceptions of pig farm and abattoir workers on tail lesion, ear lesion and lameness in pigs and (4) the opinion of lay citizens regarding the likelihood of tail lesions, ear lesions, and lameness causing suffering in pigs and affecting meat quality. Chilean pig farm workers (n = 116), pig abattoir workers (n = 95), and lay citizens (n = 708) were invited on farm, at the abattoir and in public places, respectively, to participate in a survey. Answers were indicated using a 5-point Likert scale (0 = totally disagree; 4 = totally agree). Data were analysed using generalized linear models, including recruitment place and socio-demographic data as predictor variables. Female and lay citizens attributed pigs a higher capacity to experience feelings than male participants and pig farm and abattoir workers (p < 0.05). Lay citizens and workers recruited on farm described pigs as being more intelligent and friendly than those workers recruited at the abattoir (p < 0.001); recruitment place and sex were not associated with participants’ perception regarding negative attributes of pigs (p > 0.05). Most lay citizens considered that tail lesions, ear lesions and lameness are likely to cause suffering in pigs and older participants had higher odds of agreeing that tail and ear lesions are likely to affect meat quality (p < 0.05). Finally, the risk factors for tail lesion, ear lesions and lameness pointed out by pig farm and abattoir workers is in line with what has been suggested by experts. Our findings contribute to understand the perception and values of all stakeholders regarding animal welfare, as it is crucial to improve the sustainability of animal production systems.

[1]  M. Hötzel,et al.  Consumer attitudes towards egg production systems and hen welfare across the world , 2022, Frontiers in Animal Science.

[2]  Arvind Sharma,et al.  International perceptions of animals and the importance of their welfare , 2022, Frontiers in Animal Science.

[3]  M. Hötzel,et al.  Brazilians' attitudes to meat consumption and production: Present and future challenges to the sustainability of the meat industry. , 2022, Meat science.

[4]  M. Hötzel,et al.  “Mothers Should Have Freedom of Movement”—Citizens’ Attitudes Regarding Farrowing Housing Systems for Sows and Their Piglets , 2021, Animals : an open access journal from MDPI.

[5]  A. Shoveller,et al.  Tail-Biting in Pigs: A Scoping Review , 2021, Animals : an open access journal from MDPI.

[6]  M. Molnár,et al.  Animal welfare during a period of intensification: The views of confinement and alternative pig producers , 2021 .

[7]  F. Bas,et al.  Meat Consumers’ Opinion Regarding Unhealthy Pigs: Should They Be Treated with Antibiotics or Euthanized on Farm? , 2021, Antibiotics.

[8]  L. Boyle,et al.  Assessment of Animal-Based Pig Welfare Outcomes on Farm and at the Abattoir: A Case Study , 2020, Frontiers in Veterinary Science.

[9]  M. Hötzel,et al.  On the Road to End Pig Pain: Knowledge and Attitudes of Brazilian Citizens Regarding Castration , 2020, Animals : an open access journal from MDPI.

[10]  S. Loughnan,et al.  Belief in Pigs’ Capacity to Suffer: An Assessment of Pig Farmers, Veterinarians, Students, and Citizens , 2020, Anthrozoös.

[11]  M. Connor,et al.  Consumer evaluation of farm animal mutilations. , 2019, Research in veterinary science.

[12]  M. V. von Keyserlingk,et al.  Is gene editing an acceptable alternative to castration in pigs? , 2019, PloS one.

[13]  A. L. vom Brocke,et al.  Tail lesions in fattening pigs: relationships with postmortem meat inspection and influence of a tail biting management tool. , 2019, Animal : an international journal of animal bioscience.

[14]  M. V. von Keyserlingk,et al.  Views of dairy farmers, agricultural advisors, and lay citizens on the ideal dairy farm. , 2019, Journal of dairy science.

[15]  Clandio Favarini Ruviaro,et al.  How do Brazilian citizens perceive animal welfare conditions in poultry, beef, and dairy supply chains? , 2018, PloS one.

[16]  M. Hötzel,et al.  Restricting the ability of sows to move: a source of concern for some Brazilians , 2018, Animal Welfare.

[17]  Dayane Lemos Teixeira,et al.  Are views towards egg farming associated with Brazilian and Chilean egg consumers’ purchasing habits? , 2018, PloS one.

[18]  J. Rault,et al.  Caretaker attitudes toward swine euthanasia1 , 2018, Translational animal science.

[19]  L. Boyle,et al.  Cross-Fostering Implications for Pig Mortality, Welfare and Performance , 2018, Front. Vet. Sci..

[20]  L. Boyle,et al.  Prevalence of welfare outcomes in the weaner and finisher stages of the production cycle on 31 Irish pig farms , 2018, Irish Veterinary Journal.

[21]  Dayane Lemos Teixeira,et al.  Public opinion towards castration without anaesthesia and lack of access to pasture in beef cattle production , 2018, PloS one.

[22]  S. Loughnan,et al.  Resolving the Meat-Paradox: A Motivational Account of Morally Troublesome Behavior and Its Maintenance , 2017, Personality and social psychology review : an official journal of the Society for Personality and Social Psychology, Inc.

[23]  L. Boyle,et al.  Relationship between tail lesions and lung health in slaughter pigs. , 2016, Preventive veterinary medicine.

[24]  L. Frewer,et al.  A Systematic Review of Public Attitudes, Perceptions and Behaviours Towards Production Diseases Associated with Farm Animal Welfare , 2016 .

[25]  S. More,et al.  Study on the Association between Tail Lesion Score, Cold Carcass Weight, and Viscera Condemnations in Slaughter Pigs , 2016, Front. Vet. Sci..

[26]  P. Madsen,et al.  Genetic correlation between leg conformation in young pigs, sow reproduction and longevity in Danish pig populations , 2015 .

[27]  M. V. Keyserlingk,et al.  The Ticking Clock: Addressing Farm Animal Welfare in Emerging Countries , 2015 .

[28]  S H Ison,et al.  Attitudes of farmers and veterinarians towards pain and the use of pain relief in pigs. , 2014, Veterinary journal.

[29]  R. L. Wilson,et al.  Managing animal wellbeing: a preliminary survey of pig farmers. , 2014, Australian veterinary journal.

[30]  K. Willgert,et al.  Risk factors of lameness in sows in England. , 2014, Preventive veterinary medicine.

[31]  R J Grant,et al.  Invited review: Sustainability of the US dairy industry. , 2013, Journal of dairy science.

[32]  L. Green,et al.  Longitudinal study of the effect of rubber slat mats on locomotory ability, body, limb and claw lesions, and dirtiness of group housed sows. , 2013, Journal of animal science.

[33]  H. Proctor.  Animal Sentience: Where are We and Where are We Heading? , 2012, Animals : an open access journal from MDPI.

[34]  L. Keeling,et al.  An International Comparison of Female and Male Students' Attitudes to the Use of Animals , 2010, Animals : an open access journal from MDPI.

[35]  David C J Main,et al.  Tail-biting: a new perspective. , 2010, Veterinary journal.

[36]  K. Bard,et al.  Science versus Human Welfare? Understanding Attitudes toward Animal Use , 2009 .

[37]  Laura E. Green,et al.  A cross-sectional study of the prevalence of lameness in finishing pigs, gilts and pregnant sows and associations with limb lesions and floor types on commercial farms in England , 2009, Animal Welfare.

[38]  J. Nielsen,et al.  Prevalence of clinical signs of disease in Danish finisher pigs , 2008, Veterinary Record.

[39]  G. María,et al.  Public perception of farm animal welfare in Spain , 2006 .

[40]  Christine J Nicol,et al.  A case control study of on-farm risk factors for tail biting in pigs , 2003 .

[41]  Sandra A. Edwards,et al.  The effects of prior experience of straw and the level of straw provision on the behaviour of growing pigs , 2002 .

[42]  P. Cheeke,et al.  Do domestic animals have minds and the ability to think? A provisional sample of opinions on the question. , 1998, Journal of animal science.

[43]  Daniel Berckmans,et al.  An assessment of optimal air temperatures in pig houses by the quantification of behavioural and health-related problems , 1989 .

[44]  R. Penny,et al.  Clinical observations of necrosis of the skin of suckling piglets. , 1971, Australian veterinary journal.