Cecilia Lindahl

Dr. Cecilia Lindahl

orcid

Research Focus & Metrics

Academic Career Length

8Years (2019-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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26 November 2019 in Organic Agriculture
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Journal Article
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KLKristina Lindgren
Kristina Lindgren
Stefan GunnarssonStefan Gunnarsson
Stefan Gunnarsson
Johan HöglundJohan Höglund
Johan Höglund
CLCecilia Lindahl
Cecilia Lindahl
ARAllan Roepstorff
Allan Roepstorff
The EU regulation for organic pig production requires outdoor access to promote the animal welfare. This may increase the risk of infection of the common pig parasites, Ascaris suum and Trichuris suis, because their eggs can survive for many years in the soil. The egg contamination of these parasites in outdoor areas with different managements and the faecal egg output from the pigs was investigated on 11 Swedish organic pig farms in 2008. We found eggs of A. suum and, to a minor extent, T. suis in the soil from outdoor areas, which had previously been used for pig rearing and/or for spreading of pig manure. Piglets and their dams were turned out on pastures included in a crop rotation, and these areas had a mean of 2500 A. suum and 40 T. suis eggs per kilogram soil. When the pigs were 12-week-old, the faecal egg counts (FECs) of A. suum were positively correlated with the egg concentration in pasture soils before pig turnout. The areas used by dry sows had a mean of 11,700 A. suum and 220 T. suis eggs per kilogram soil. The highest egg concentrations in the soil were found in areas, frequently used by pigs in the most recent years. To minimise pasture contamination with parasite eggs, it is advised to have a crop rotation system and to inactivate parasite eggs in pig manure before spreading it. Parasite control needs further development to protect suckling piglets from infections due to environmental parasite egg contamination.

25 November 2020 in Animals
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Journal Article
Open access
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CLCecilia Lindahl
Cecilia Lindahl
ESErik Sindhøj
Erik Sindhøj
RHRebecka Brattlund Hellgren
Rebecka Brattlund Hellgren
Charlotte BergCharlotte Berg
Charlotte Berg
UWUppsala Wallenbeck
Uppsala Wallenbeck
Nitrogen gas (N2) delivered in high expansion foam in a closed container could be a feasible method for humanely stunning pigs. This study aimed to evaluate potential aversion in pigs to the N2 foam method and its effect on stun quality. Furthermore, the study aimed to assess potential aversion to the foam itself. Sixty pigs (27.8 ± 4.4 kg) were divided into three treatments and were exposed to either N2-filled foam, air-filled foam, or no foam air. The N2 foam was effective at purging the air from the container and quickly created stable anoxic conditions. The pigs did not show any strong aversive behaviours when exposed to foam. However, they seemed to avoid putting their heads and snouts into the foam when foam levels became high. Escape attempts through the lid also increased when the foam started covering their heads. The mean time to loss of posture was 57.9 s. Based on the results, stunning with the N2 foam technique could be a viable alternative to high concentration CO2 stunning and potentially lead to improved animal welfare at slaughter.

30 January 2023 in Animals
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Journal Article
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ASAstrid Söderquist
Astrid Söderquist
UWUppsala Wallenbeck
Uppsala Wallenbeck
CLCecilia Lindahl
Cecilia Lindahl
The common method of stunning pigs using high concentration carbon dioxide prior to slaughter poses an animal welfare issue, as the gas is aversive. Proof of concept for using nitrogen gas encapsulated in high-expansion foam as an alternative non-aversive method for stunning pigs has recently been presented. However, the individually tested pigs showed distress-related responses to foam exposure, regardless of whether it was nitrogen- or air-filled. This study examined the effect of companionship from a familiar or unfamiliar pig on behaviours in 72 nine-weeks old pigs during exposure to air-filled foam. Escape attempts were observed by 75% of solitary pigs, 42% of pigs with unfamiliar conspecifics, and 33% of pigs with familiar conspecifics. Familiar pig pairs clearly preferred social contact during foam exposure, whereas this was not as clear in unfamiliar pig pairs, and their motivation for social contact could have multiple explanations. The results from this study highlight the importance of contact with conspecifics when studying animal welfare and suggest that familiarity between pigs is important for social support, thus emphasizing the importance of maintaining social groups to reduce distress in pigs at slaughter.

23 July 2025 in Cryptography
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Journal Article
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AAAbdul Ghafoor Abbasi
Abdul Ghafoor Abbasi
ISIraklis Symeonidis
Iraklis Symeonidis
ARAnna Rydberg
Anna Rydberg
CLCecilia Lindahl
Cecilia Lindahl
AAAbdul Qadus Abbasi
Abdul Qadus Abbasi
Cybersecurity represents a critical challenge for data-sharing platforms involving multiple stakeholders, particularly within complex and decentralized systems such as livestock supply chain networks. These systems demand novel approaches, robust security protocols, and advanced data management strategies to address key challenges such as data consistency, transparency, ownership, controlled access or exposure, and privacy-preserving analytics for value-added services. In this paper, we introduced the Framework for Livestock Empowerment and Decentralized Secure Data eXchange (FLEX), as a comprehensive solution grounded on five core design principles: (i) enhanced security and privacy, (ii) human-centric approach, (iii) decentralized and trusted infrastructure, (iv) system resilience, and (v) seamless collaboration across the supply chain. FLEX integrates interdisciplinary innovations, leveraging decentralized infrastructure-based protocols to ensure trust, traceability, and integrity. It employs secure data-sharing protocols and cryptographic techniques to enable controlled information exchange with authorized entities. Additionally, the use of data anonymization techniques ensures privacy. FLEX is designed and implemented using a microservices architecture and edge computing to support modularity and scalable deployment. These components collectively serve as a foundational pillar of the development of a digital product passport. The FLEX architecture adopts a layered design and incorporates robust security controls to mitigate threats identified using the STRIDE threat modeling framework. The evaluation results demonstrate the framework’s effectiveness in countering well-known cyberattacks while fulfilling its intended objectives. The performance evaluation of the implementation further validates its feasibility and stability, particularly as the volume of evidence associated with animal identities increases. All the infrastructure components, along with detailed deployment instructions, are publicly available as open-source libraries on GitHub, promoting transparency and community-driven development for wider public benefit.

11 February 2022 in Animals
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Journal Article
Open access
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CLCecilia Lindahl
Cecilia Lindahl
ÅBÅsa Bergman Bruhn
Åsa Bergman Bruhn
IAIng-Marie Andersson
Ing-Marie Andersson
The Swedish equine sector is considered a high-risk work environment, with relatively high injury rates and high severity of injuries. General safety research has identified a correlation between the safety performance and safety culture, but little is known about the intricacies of the safety culture in the Swedish equine sector, especially concerning managers’ and employees’ perceptions of their work environment. The safety climate assessment is recognised as an effective tool for identifying potential problems in the workplace, thus enhancing safety behaviour and decreasing the frequency and severity of injuries. The aim was to evaluate the safety climate at riding schools and trotting stables through the Nordic Safety Climate Questionnaire (NOSACQ-50) diagnostic tool, and to get a better understanding of the workers’ perceptions regarding safety and safety management at their workplace through complementary interviews. The results showed that the safety climate was generally positive and that employees were aware of the risks relating to their work. Riding schools commonly had routines in place for risk assessment and work environment management, but such routines were often lacking at trotting stables, indicating inadequate prioritisation of safety by the management. The main area that should be targeted to improve safety in the sector is employees’ prioritisation and non-acceptance of risks. Proactive instead of reactive safety management should be promoted, where safety is an integral part of daily work and all employees are encouraged to identify factors contributing to occupational injuries and develop strategies for injury prevention.

9 June 2025 in Animal
Verified
Journal Article
Open access
CLCecilia Lindahl
Cecilia Lindahl
ESE. Sindhøj
E. Sindhøj
MGM.A. Gerritzen
M.A. Gerritzen
HRH.G.M. Reimert
H.G.M. Reimert
CBC. Berg
C. Berg
AWA. Wallenbeck
A. Wallenbeck
According to the EU legislation, all animals farmed for food production must be stunned before being exsanguinated (exempt slaughter prescribed by religious rites). Stunning methods must be reliable, effective, and free from avoidable pain, distress, and suffering, warranting continuous improvement. New methods must be thoroughly evaluated from an animal welfare perspective before approval. One technology developed for on-farm euthanasia and large-scale depopulation for disease control in pigs uses high-expansion foam to create an anoxic atmosphere in a closed container. The method has previously been suggested as a potential method for stunning pigs at slaughter. This study compared the behavioural responses and stun process (e.g., loss of posture and convulsions) of pigs exposed to three different gases (N2, Ar, and CO2) delivered in high-expansion foam. Thirty-six pigs, approximately 12 weeks old, were placed one at a time in a container and exposed to either N2, Ar, or CO2 gas-filled foam for 5 min from foam start. Behavioural observations were conducted from video recordings, assessing time to loss of balance, loss of posture, last strong convulsion and last muscle contraction. Results showed that pigs in the CO2 treatment performed escape attempts significantly earlier than in N2 and Ar, and there were more pigs that performed this behaviour in CO2, indicating that high concentrations of CO2 are more aversive than Ar and N2. Pigs exposed to CO2 foam also avoided the foam earlier compared to the other two gases. Loss of posture occurred earlier in the CO2 treatment, consistent with the anaesthetic effect of CO2. A faster foam filling time for CO2 foam may be a contributing factor to the differences found; however, filling time was adjusted for in the statistical analyses to reduce bias in the comparisons between gases. All pigs across treatments were adequately stunned after 5 min, with no corneal reflex, rhythmic breathing, gagging, or muscle contractions upon removal from the container. No indications of regained consciousness during sticking and bleeding were found. In conclusion, the gas foam method was effective in stunning the pigs regardless of the gas type used. The less aversive responses to Ar and N2 foam are positive from an animal welfare perspective, but the longer time to loss of consciousness compared to CO2 is a disadvantage.