Prospects for dog rabies elimination in Nigeria by 2030.

The attainment of the global target of zero dog-mediated human rabies by 2030 depends on functional rabies programmes. Nigeria, a rabies-endemic country, and the most populous country in Africa has a very poor rabies control strategy with a score of 1.5 out of 5 based on the Stepwise Approach towards Rabies Elimination (SARE). In this article, we report a scoping review that we conducted to highlight the strengths, weaknesses, opportunities and threats as well as situational analysis of rabies control in Nigeria and suggest a timeline for key activities that are needed to ensure zero by 30. Our findings reveal that rabies is grossly under-reported as only 998 human and 273 dog-suspected rabies cases were reported across Nigeria between 2017 and 2022. Our literature review also demonstrates a paucity of information on rabies in both human and animal health sectors. A total of 49 studies on dog rabies in Nigeria, with a predominance of reports from the North Central geopolitical region (48%, n = 23) were therefore included in this study. Currently, only 16.2% (n = 6/37) of Nigerian states have available data related to the estimated dog populations, the dog ownership rates, the vaccination status of dogs or the incidence of dog bites. Based on a dog-to-human ratio of 1:16.3, we estimated that the dog population in Nigeria was 12,969,368 (95% CI: 12,320,900-13,617,836). Thus, to attain herd immunity and dog rabies control in Nigeria, at least 9.1 million dogs must be vaccinated annually. Our review reveals that, despite the strengths and available opportunities to achieve rabies control in Nigeria by 2030, the weaknesses and challenges will make the attainment of zero by 30 very difficult or impossible. Nigeria's best-case scenario by the year 2030 is SARE stage 3-4 (control-elimination) out of 5. Otherwise, the rabies control programme might not surpass SARE stages 2-3. To attain zero by 30, Nigeria must re-strategize its current rabies control programme by funding and implementing the national strategic plan for rabies control, creating a rabies desk office in the 37 states (FCT inclusive), rigorously conducting mass vaccination campaigns, providing post-exposure prophylaxis, prioritizing mass enlightenment with a focus on responsible pet ownership and conduct baseline national rabies surveillance in the animal and human health sectors.

Dog bites more prevalent on hot and sunny days.

Georgina Mills reports on new research that looked into a link between dog bite incidents and the weather.

Households' Practices towards Rabies Prevention and Control in Rural Nepal.

Rabies is a vaccine-preventable, zoonotic, viral disease and a major public health concern for developing countries such as Nepal. A study was conducted from October-December 2021 among 308 household heads from three districts in Nepal (Siraha, Parsa, and Nawalparasi West) through an in-person interview to examine the rural people's practices towards rabies. Of 70 respondents owning pet animals, 82.9% vaccinated them against rabies but 87.9% (51/58) of them kept a vaccination record. Nearly all respondents (99.7%, 307/308) said they would visit hospitals after being bitten by rabid or rabies suspected animals, and 18.2% (56/308) of them said they would also opt to visit traditional healers seeking treatment against rabies. Seven in ten respondents knew that they should wash bitten body area with soap and water. Around 60% (184/308) of respondents said they would not bother to notify or report to the local authorities if they saw someone bitten by a presumed rabid dog or observed animal behavior suggestive of rabies. The Chi-square test showed a significant association between the socio-demographic characteristics of respondents with practices (good practice and poor practice) towards rabies. The study findings suggest that rural people in Nepal need to be educated with applied rabies control and prevention practices and made aware of health seeking behavior and the role that a community members have to play to control, prevent, and eradicate rabies.

Study of dog control strategies.

OBJECTIVES: (1) To explore the relationship between regionally implemented dog control strategies and dog bite injuries (DBIs) and (2) to evaluate current implementation of dog control strategies. METHODS: Observational study using a nationwide online survey of territorial authorities (TAs). Domains of interest included complaints for attacks on people, dog population, primary and secondary prevention strategies, resourcing and perspectives of current strategies. Quantitative variables were compared with DBI Accident Compensation Corporation (ACC) claims by region from 2014 to 2018. RESULTS: Two-thirds of TAs (70%; n=47/67) responded to the survey. No clear relationship was observed between DBIs and: registered dog population, proportion sterilisations or microchipping, classifications due to dog behaviour, or existing limited resourcing. Legislated breeds and infringements for failure to control a dog or non-registration were higher in areas with greater DBIs. Educational messages varied widely and were predominantly victim directed (67%; n=71/106). Complaints for dog attacks on people were lower than DBIs in most areas, with no formal cross-agency notification policies. Few prosecutions or dog destruction orders were made. CONCLUSIONS: Regional inequity in DBIs could not be explained by differences in the registered dog population or dog control strategies. Minimal and inequitable resourcing exists to implement current dog control strategies and provide owner-directed education. Gaps in legislation include environmental barrier requirements for all dogs (leash/muzzle use, adequate fencing), notification of incidents and child protection. Partnership with the Indigenous community (Maori) and other community groups will be required to implement these measures successfully.

Inhibition of Nematocyst Discharge from Pelagia noctiluca (Cnidaria: Scyphozoa)-Prevention Measures against Jellyfish Stings.

Pelagia noctiluca stings are common in Mediterranean coastal areas and, although the venom is non-lethal, they are painful. Due to its high toxicity and abundance, P. noctiluca is considered a target species for the focus of research on active ingredients to reduce the symptoms of its sting. To determine the effect of 31 substances and formulations on nematocyst discharge, we performed three tests: (1) screening of per se discharge activator solutions, (2) inhibitory test with nematocyst chemical stimulation (5% acetic acid) and (3) inhibitory test quantifying the hemolytic area. Ammonia, barium chloride, bleach, scented ammonia, carbonated cola, lemon juice, sodium chloride and papain triggered nematocyst discharge. All of them were ruled out as potential inhibitors. Butylene glycol showed a reduction in nematocyst discharge, while the formulations of 10% lidocaine in ethanol, 1.5% hydroxyacetophenone in distilled water + butylene glycol, and 3% Symsitive® in butylene glycol inhibited nematocyst discharge. These last results were subsequently correlated with a significant decrease in hemolytic area in the venom assays versus seawater, a neutral solution. The presented data represent a first step in research to develop preventive products for jellyfish stings while at the same time attempting to clarify some uncertainties about the role of various topical solutions in P. noctiluca first-aid protocols.

Preventing dog bites with L.O.V.E.

ABSTRACT: Children can be vulnerable to dog bites when they don't recognize aggressive cues, highlighting the importance of safe child-dog interactions. This article explains how anticipatory guidance with L.O.V.E. can be used to educate children and families about preventing dog bite injuries.

Systematic review of dog bite prevention strategies.

BACKGROUND: The prevention of dog bites is an increasingly important public health topic, as the incidence of serious injury continues to rise. OBJECTIVES: To evaluate the effectiveness of interventions to prevent dog bites and aggression. METHODS: Online databases were searched (PubMed, Cochrane Library, Embase and Google Scholar), using the search terms: dog/s, canine, canis, kuri, bite/s, bitten, aggression, attack, death, fatal, mortality, injury/ies, prevention, intervention, for studies between 1960 and 2021. All study designs were considered. Outcomes of interest were the incidence of dog bites or dog aggression. Non-English studies, and those without full-text access were excluded. RESULTS: Forty-three studies met the review criteria, including 15 observational and 27 interventional studies. Fifteen studies investigating dog-control legislation, including leash laws, stray dog control and infringements indicated this can reduce dog bite rates. Breed-specific legislation had less of an effect. Six studies investigating sterilisation, showed while this may reduce dog bites through a reduction in the dog population, the effect on dog aggression was unclear. An alcohol reduction programme showed a significant reduction in dog bite rates in one study. Seven studies assessing educational approaches found that intensive adult-directed education may be effective, with one study showing child-directed education was not effective. Eight studies on dog training (two police-dog related), and six evaluating dog medication or diet were generally low quality and inconclusive. CONCLUSIONS: Multiple strategies including effective engagement with indigenous communities and organisations will be required to reduce dog-bites and other incidents involving dog aggression. This review provides some evidence that legislated dog control strategies reduce dog bite rates. Available evidence suggests greater restrictions should be made for all dogs, rather than based on breed alone. Due to a burden of child injury, protection of children should be a focus of legislation and further investigations. Prevention strategies in children require redirection away from a focus on child-directed education and future research should investigate the effectiveness of engineering barriers and reporting strategies.

The nature and consequences of camel-related injuries: A scoping review with special reference to Arab Middle Eastern countries.

Animal-related injuries are a substantial but under-reported, emerging public health problem contributing considerably to worldwide morbidity and death. Understanding the behavior of big animals may help in injury prevention. Camels are large long-neck ungulates of the genus Camelus that have been domesticated for millennia as a mode of transportation, race, and food source. Camel-related injuries are not well studied when compared with other animals' injuries. Camels can occasionally be very hostile to humans, inflicting serious injuries. These injuries can be caused by camel bites, falls from their backs, kicks, or collisions with motor vehicles. The relative magnitude of each mechanism has never been extensively studied in the literature. Furthermore, the incidence of camel-related injuries is not well reported worldwide. Camels remain a potential cause of serious injuries and a public health problem for some countries in the Middle East. There are gaps in the incidence, risk factors and mechanism, distribution of camel-related injuries. We aimed to summarize the data and draw conclusions pertaining not just to the most common mechanism of injury but to demographics, incidence, severity, and appropriate methods of prevention of camel-related injuries. This scoping review findings will help for better understanding of the nature and consequences of camel-related injuries, and to improve the existing preventive and management strategies.

Débats autour des races canines et de la santé publique à Montréal et au Québec (2016-2019).

OBJECTIVES: We examine the public policies that have been formulated to reduce the incidence of dog bites. We do so to encourage the adoption of policies aligned with One Health promotion. METHODS: This case-study research involved an ethnographic approach. Our qualitative analysis derived from participant observation, policy documents, media coverage, and interviews with stakeholders in Montreal (Quebec). RESULTS: Following on from a human fatality due to dog bite injuries, the City of Montreal decided to ban certain types of dogs based on their 'breed.' In the ensuing discussions, the 'Calgary model' emerged as an alternative to breed-specific legislation. These discussions led to a change in policy direction for Montreal, and for Quebec as a whole. Furthermore, we discerned marked improvements with respect to intersectoral coordination in the wake of this controversy. CONCLUSION: 'Policy mobilities' offer a useful conceptual apparatus for understanding how public policies for dog bite prevention are polarized around controversial proposals, to the detriment of discussions that focus on policy implementation.

RéSUMé: OBJECTIFS: Nous étudions les politiques publiques formulées pour la prévention des morsures canines, et cherchons à promouvoir les approches « une seule santé ¼. MéTHODOLOGIE: Notre travail repose sur une étude de cas, sur laquelle nous avons posé un regard ethnographique en analysant des données qualitatives : observations de terrain, documentation institutionnelle, couverture médiatique, et entretiens avec des parties-prenantes à Montréal (Québec). RéSULTATS: Suite à un décès lié à une morsure de chien, la Ville de Montréal a décidé de l'interdiction de certains chiens sur la base de leur « race ¼. Les débats voient cependant émerger le « modèle de Calgary ¼ comme une alternative aux législations visant des races canines particulières. Ces discussions mènent à un changement de politique publique à Montréal et plus largement au Québec. En outre, nous portons également notre attention sur les améliorations en matière de coordination intersectorielle que nous constatons entre les acteurs responsables de la mise en œuvre de cette politique. CONCLUSION: Le concept de « circulation des politiques publiques ¼ permet d'éclairer les politiques de prévention des morsures canines à Montréal, en montrant notamment par quels mécanismes certaines propositions controversées polarisent l'attention publique, au détriment des discussions portant sur la mise en œuvre des politiques municipales.

Aspectos epidemiológicos dos acidentes por animais peçonhentos no Nordeste brasileiro / Epidemiological aspects of accidents by poisony animals in Northeast Brazil / Aspectos epidemiológicos de accidentes por animales venenosos en el Noreste de Brasil

Objetivo: Descrever os aspectos epidemiológicos dos acidentes por animais peçonhentos no Nordeste do Brasil. Método: estudo descritivo, retrospectivo, construído a partir de dados secundários disponíveis no portal do Departamento de Informática do Sistema Único de Saúde do Brasil referente aos casos de acidentes com animais peçonhentos no período de 2015 a 2019. Resultados: percebeu-se que entre 2015 e 2019 houve um crescimento percentual médio de 74,25% nos casos, sendo registrados cerca de 4 mil acidentes com animais peçonhentos por mês. Quanto aos aspectos sociodemográficos, predominou o sexo feminino (51,35%), pardos (62,51%), com faixa etária de 20-59 anos (57,5%). Além disso, nos aspectos clínicos dos acidentes, nota-se a maior ocorrência de acidentes com escorpiões (72,70%). Conclusão: vê-se a importância em analisar aspectos epidemiológicos a fim de subsidiar ações de promoção, proteção e gestão em saúde

Objective: to analyze the epidemiological aspects of accidents by venomous animals in Northeastern Brazil. Method: descriptive, retrospective study, constructed from secondary data available on the website of the Department of Informatics of the Brazilian Unified Health System regarding cases of accidents with venomous animals in the period from 2015 to 2019. Results: it was noticed that between 2015 and 2019 there was an average percentage increase of 74.25% in cases, with approximately 4 thousand accidents involving venomous animals per month. As for the sociodemographic aspects, there was a predominance of females (51.35%), browns (62.51%), aged 20-59 years (57.5%). In addition, in the clinical aspects of accidents, there is a higher occurrence of accidents with scorpions (72.70%). Conclusion: we see the importance of analyzing epidemiological aspects in order to support health promotion, protection and management actions

Objetivo: analizar los aspectos epidemiológicos de los accidentes por animales venenosos en el noreste de Brasil. Método: estudio descriptivo, retrospectivo, construido a partir de datos secundarios disponibles en el sitio web del Departamento de Informática del Sistema Único de Salud de Brasil sobre los casos de accidentes con animales venenosos en el período de 2015 a 2019. Resultados: se notó que entre 2015 y 2019 fue un aumento porcentual promedio de 74,25% en los casos, con aproximadamente 4 mil accidentes con animales venenosos por mes. En cuanto a los aspectos sociodemográficos, hubo predominio del sexo femenino (51,35%), marrones (62,51%), de 20 a 59 años (57,5%). Además, en los aspectos clínicos de los accidentes, hay una mayor ocurrencia de accidentes con escorpiones (72,70%). Conclusión: vemos la importancia de analizar los aspectos epidemiológicos para apoyar las acciones de promoción, protección y gestión de la salud

Mordeduras de perro. Análisis epidemiológico (2011-2018) y estrategias preventivas / Dog bites. Epidemiological analysis (2011-2018) and preventive strategies

Introducción: las mordeduras de perro en niños constituyen una causa importante de morbimortalidad a nivel mundial. El objetivo de este estudio es describir características epidemiológicas y clínicas de estos incidentes en pacientes pediátricos de nuestro entorno, así como aportar medidas de prevención para disminuir la incidencia. Material y métodos: estudio retrospectivo a partir de pacientes atendidos por mordedura de perro durante un periodo de nueve años en un hospital de tercer nivel. Se recogieron variables demográficas, raza de perro, localización de lesiones, relación entre perro y niño, tratamiento recibido y secuelas. Resultados: se registraron 236 pacientes, con una edad media de siete años. La mayoría de las agresiones se produjeron en los meses de primavera y verano. En el 76% de los casos el perro era conocido. Solo el 10% de los ataques fueron por perros considerados peligrosos. El 51% de las lesiones se localizaron en la cabeza y el cuello y el 40% en las extremidades. Se indicó profilaxis antibiótica en el 90%. Un 5% requirió ingreso. Se describieron secuelas estéticas y psicológicas en un 15% y 10%, respectivamente. Conclusiones: las mordeduras de perro siguen siendo un motivo de consulta en urgencias pediátricas, siendo los menores de seis años los más afectados. El perro agresor es en la mayoría de los casos del entorno familiar y de raza considerada no peligrosa. La persistencia de estos incidentes debe hacer adoptar medidas preventivas que ayuden a concienciar a la población y así disminuir la frecuencia y gravedad de estas lesiones (AU)

Introduction: dog bites in children continue to cause significant morbidity and mortality worldwide. The purpose of our study was to describe the epidemiological and clinical characteristics of these accidents in the paediatric population of our area and to propose preventive strategies to reduce their incidence. Material and methods: we conducted a retrospective study of patients that received care for dog bites in a tertiary care hospital over an 8-year period. We collected data on demographic variables, dog breeds, sites of injury, the relationship between the dog and the child, the treatment received and sequelae. Results: we identified 236 patients, with a mean age of 7 years. Most attacks occurred in spring or summer. In 76% of cases, the child was acquainted with the dog. Only 10% of attacks involved breeds considered potentially dangerous. Fifty-one percent of injuries were in the head or neck and 40% in the extremities. Antibiotic prophylaxis was prescribed in 90% of cases. Five percent required admission. Cosmetic sequelae were documented in 15% of patients and psychological sequelae in 10%. Conclusions: dog bites continue to be a reason for seeking emergency care in the paediatric population, and they are most frequent in children aged less than 6 years. In most cases, the attacking dog was a family pet of a breed not considered dangerous. The persistence of these incidents calls for the implementation of preventive measures to raise awareness in the population and thus reduce the frequency and severity of these injuries (AU)

Exploring rabies endemicity in Pakistan: Major constraints & possible solutions.

Rabies, the oldest recorded viral zoonosis in the Indo-Pakistan subcontinent, is a neglected and lingering endemic disease in Pakistan. The review of online available rabies-related journals, papers and reports through platforms and electronic databases have provided the basis for a detailed analysis of the rabies situation in Pakistan. Only published materials related to various research areas of rabies in Pakistan were included and meaningful conclusions were developed to identify major constraints and generate an intellectual discussion on possible solutions. Results revealed 52 studies representing major issues concerning rabies prevention related to topics including, but not limited to: epidemiological investigations (40.38%), prophylactic measures (21.15%), population of wandering dogs (13.46%), public awareness and government interventions (17.30%) and diagnostic surveillance (7.69%). In order to minimize these problems and reduce the prevalence of dog bites or rabies in significant manners, the country direly needs to apply the following actions: a maintained supply of rabies prophylactic measures in public hospitals at subsidized rates, mass dog vaccination at regional levels, enforced responsible animal ownerships, implementing a systematic One Health approach, and diagnostic labs equipped with surveillance mechanisms established in coordination with the livestock and medical departments. This review, which presents up-to-date information on the risk factors and epidemiological features of rabies in Pakistan, provides useful information for scientists, policy makers, and administrative health officials wishing to understand how this deadly disease persists in the absence of effective control measures.

Dog bites and attacks on athletes: lack of effective prevention mechanisms.

Athletes who train in public places in urban and rural areas are just as attacked and injured by dogs of known owners as they are by dogs with no owners, in a relatively equal proportion. The largest number of bites occurs in the summer, what makes up half of all bites, just when sports activity is most pronounced. Athletes who are most often exposed to potential attacks and bites are cyclists, long-distance athletes, marathon runners, recreational athletes, etc. both during training and competitions. Off-road cyclists are at a significantly higher risk of dog attacks because cycling takes place off-road, that is, away from urban areas. Dog attacks can adversely affect the psycho-physical readiness of athletes. In Bosnia and Herzegovina there have been no cases of injuries to athletes recorded by competent medical institutions or umbrella sports associations. It is necessary to work on more efficient administration (registration and recording of attacks and bites of dogs). It is of utmost importance to educate athletes on dog behaviour, the reasons for their aggressive behaviour and causal mechanisms of dog attacks as well as the first aid education, what can have a great impact on reducing further complications.

Baseline epidemiology and associated dog ecology study towards stepwise elimination of rabies in Kwara state, Nigeria.

Understanding domestic dog population dynamics and ecology is crucial to any effective rabies control program. This study was conducted as part of the baseline epidemiological studies necessary for the establishment of the Kwara Rabies Rapid Alert System "KRRAS". This study aimed to determine the dog population structure of Kwara State by assessing the dog ownership, vaccination status, and prevalence of dog bites. A total of 1460 questionnaires were administered to respondents in the three senatorial zones of the state using Open Data Kit (ODK) between June 2019 to January 2020. Of the 1460 households surveyed, 293 (20.1 %) owned at least one dog with an average of 2.25 dogs per household. The male to female ratio was 1.9:1 and 79.3 % (n = 523/659) of the owned dogs were local breeds. A total of 785 dogs was enumerated (659 dogs from 293 households and 126 free-roaming dogs) and 7811 persons which resulted in a dog-human ratio of 1:9.95. The estimated dog population is 376,789 (95 % CI: 343,700 - 379,878). Only 31 % (n = 204/659) of households vaccinated their dogs against rabies. The prevalence of dog-bite was 13 % (n = 193/1460) of which only 27 % of the victims (n = 61/225) received post-exposure prophylaxis (PEP). Dog ownership was significantly impacted by the ethnicity of respondents. Hausa (OR: 3.76; 95 % CI: 1.15-12.4; p < 0.001) and Nupe (OR: 4.48; 95 % CI: 1.77-11.33; p < 0.001) respondents owned dogs than Yoruba respondents. The rabies vaccination status of owned dogs was significantly impacted by the level of education (OR: 5.03; 95 % CI: 1.50-16.83; p < 0.001); history of previous dog bite incidents (OR: 1.74; 95 % CI: 0.95-3.17; p < 0.001); the breed of the dog with exotic dogs being more vaccinated (OR: 2.79: 95 % 0.64-12.05; p < 0.001). Similarly, Male dogs (OR: 1.49, 95 % 1.03-2.86; p < 0.001) and partially confined dogs (OR: 1.09, 95 % 0.45-2.11, p < 0.001) were found to be vaccinated against rabies. The results of the study showed low dog vaccination coverage, and high number of free roaming dogs. Hence, a threat to public health. The low dog vaccination coverage is below the 70-80 % target recommended for herd immunity by the World Health Organization.

A New Test of a Theory about Old Mosquitoes.

In vector control, it is widely accepted that killing adult mosquitoes would sharply reduce the proportion of old mosquitoes and cause the greatest changes to malaria transmission. The principle is based on a mathematical model of the sporozoite rate (the proportion of infective mosquitoes) that emphasized changes in mosquito age. Killing adult mosquitoes also reduces mosquito population densities, which are directly proportional to human biting rates (the number of bites, per person, per day). Eect sizes of vector control can be compared using sporozoite rates and human biting rates, which are commonly measured. We argue that human biting rates convey more use- ful information for planning, monitoring and evaluating vector control, and operational research should focus on understanding mosquito ecology.

Dog Bites in the United States from 1971 to 2018: A Systematic Review of the Peer-Reviewed Literature.

BACKGROUND: Surgical specialists in plastic, head and neck, hand, trauma surgery, and emergency medicine physicians bear the burden of treating the most serious injuries caused by animals. Most of these incidents result from an attack by a known dog, and breed has been proposed, but not proven, to be a controllable factor. The authors summarize the peer-reviewed literature on dog bites in the United States, specifically as related to the breeds implicated. METHODS: A systematic review of all peer-reviewed publications reporting on dog bites in the United States was performed. MEDLINE, Embase, Scopus, Google Scholar, and Cochrane Library searches were conducted through May 8, 2018, for studies from the United States implicating a specific dog breed as responsible. RESULTS: Forty-one articles met inclusion criteria, the majority of which were single-institution retrospective reviews. Main outcomes were any dog bite reported in the peer-reviewed literature where a specific breed was implicated. Secondary measures included dog bites reported in areas where breed-specific legislation was enacted. The most common pure breed identified was German Shepherd, followed by Pit Bull-type breeds (i.e., American Staffordshire Terrier, American Pit Bull Terrier, Staffordshire Bull Terrier, American Bully), Labrador, Collie, and Rottweiler, respectively. Pit bull-type and German Shepherd breeds are consistently implicated for causing the most serious injuries to patients in the United States across heterogeneous populations, and this remained consistent across multiple decades. CONCLUSIONS: The authors' results indicate that German Shepherd and Pit Bull-type breeds account for the largest subset of pure breeds implicated in severe dog bites inflicted on humans in the medical literature. The role and complexity of mentioning breed in relation to human injuries are also discussed.

Can increased dietary fibre level and a single enrichment device reduce the risk of tail biting in undocked growing-finishing pigs in fully slatted systems?

This study evaluated the effectiveness of combined dietary and enrichment strategies to manage tail biting in pigs with intact tails in a conventional fully-slatted floor housing system. A 2 × 2 × 2 factorial design was used. Pigs had either a high fibre (weaner 5.3% and finisher 11.6% of crude fibre) or standard fibre diet (weaner 3.7% and finisher 5.9% of crude fibre). In the weaner stage, pigs had either a spruce wooden post (supplied in a wall-mounted dispenser) or a rubber floor toy as a enrichment device, and in the finisher stage, they had either the same or alternate enrichment item. Six hundred and seventy-two pigs were assigned to 48 pens of 14 pigs and followed from weaning until slaughter. Individual tail lesion scores and pen level behaviours were directly recorded every 2 weeks. Twenty-six pens had tail biting outbreaks and 161 injured pigs needed removal for treatment. Pigs fed with the high fibre diet performed more tail biting (p < 0.05) and tended to have a worse tail damage scores than those fed the standard fibre diet (p = 0.08). Pigs which had the floor toy as weaners and wood as finishers tended to have fewer tail lesions in the finisher stage than their counterparts (p = 0.06). Pigs receiving the floor toy as enrichment interacted with the enrichment more frequently overall (p < 0.001) and performed fewer harmful behaviours in the weaner stage (p < 0.05). Overall, higher fibre in the diet in a relatively barren environment did not help reduce tail biting or tail lesions. Altering the fibre level in the pigs' diet and providing a single enrichment device to undocked pigs on fully slatted floors resulted in a high level of tail biting and a large proportion of pigs with partial tail amputation.

Variable response to electric shark deterrents in bull sharks, Carcharhinus leucas.

Although relatively rare, human-shark interactions and sharks bites are increasing globally, which has led to the development of various mitigation measures. Electric shark deterrents (ESDs) have, so far, been the most effective personal deterrents, but have only been scientifically tested on one of the species most frequently responsible for shark bites, i.e. white shark (Carcharodon carcharias). We tested the effectiveness of five ESDs (E-Shark Force, NoShark, Rpela v2, Freedom + Surf, Freedom + Surf-Shortboard) on bull sharks, Carcharhinus leucas, over a period of 21 days in September 2019, in New Caledonia. Standardised bait was attached 30 cm below an experimental board that had an active ESD for up to 15 min, or until a bull shark touched the bait or the board. We compared the numbers of baits taken, numbers of passes and reactions around the board, as well as the distance between the sharks and the board among ESDs and against a control board with bait and no active ESD. The Freedom + Surf was the most effective ESD, reducing the amounts of baits taken by 42.3%, while the Rpela v2 and Freedom + Surf-Shortboard also significantly reduced the number of baits taken by 16.5% and 16.2% respectively. Mean distance between sharks and the bait was not affected by the ESDs, but the number of approaches and the proportion of reactions were both significantly higher when the Freedom + Surf was active compared to other ESDs. The effectiveness of all ESDs decreased over time, with the likelihood of the bait being taken increasing and the number of approaches and distance between sharks and the bait decreasing. Our findings show that the ability of ESDs to deter bull shark varies between products, with the Freedom + Surf resulting in the most behavioural changes, followed by the Rpela v2 and Freedom + Surf-Shortboard. However, none of the products tested completely stopped sharks from taking the bait.