Risk factors for horse falls and injuries in National Hunt horse racing in the UK

The aim of this study was to identify factors associated with an increase or decrease in the risk of falling in National Hunt racing in the UK and to quantify the contribution of falling to injury and fatality in horsesp articipating in hurdle and steeplechasera cing. Analysis of retrospective data from the 1999 racing year on all UK racecourses identified falling risks of 6.0 per 100 starts in steeplechaser acing and 2.1 per 100 starts in hurdling. The death risk among fallers was 3.7% in steeplechasinga nd 7.1% in hurdling. Of all deaths recordedt hat year, during steeplechasea nd hurdle racing, 38% were associatedw ith a fall. Examination of the sources of variation in the risk of falling, with the start as level-1, showed that a proportion of level-2 variation resided at the horse, the race and the sire level in steeplechasing, with very little clustering at any level in hurdling other than level-1. Trainer and jockey contributed very little to the variation in the risk of falling. Results of multivariable analyses of these data also showed that some of the risk factors for falling are different for hurdling and steeplechasing. In steeplechasing younger horses, increasing race distance and lack of previous racing experience were all associated with an increase in the risk of falling. In hurdling, starting hurdling at an older age and less experienced jockeys were associated with an increase in the risk of falling. A prospective cohort study of hurdle and steeplechaser acing was performed on 6 UK racecourses over a 2- year period providing information on the frequency of exposures of particular racing practices. The fatality risk of fallers was 6.5% and the injury risk of fallers was 8.9%. This study identified that longer journey times to the racecourse were associated with an increased risk of falling and that sunny weather also increased the risk of falling. There was also some evidence that pre-race behaviour was associated with falling. The injury risk in the cohort study was 2.8 per 100 starts. The commonest types of injury were superficial digital flexor tendon injuries and lacerations. Risk of injury was associated with race distance and weight carried. Withholding water was associated with an increase risk of all types of injury including medical events, and both fast races and poor foot conformation were associated with an increased risk of musculoskeletal injuries. A nested case-control study, utilising video analysis of races, identified that the majority of falls were due to mistakes at fences and not due to horse injury prior to jumping the fence. The study also identified that horses which were being whipped and which were progressing through the race were at greater risk of falling. Case-control studies in hurdle and steeplechase racing were conducted using a novel approach in which the jumping effort was the outcome of interest. Cases were jumping efforts that resulted in a fall and controls were selected from all successful jumping efforts. In hurdling the frequency of falls was 1 per 447 jumping efforts and in steeplechasing 1 per 254 jumping efforts. In hurdling the risk of falling increased at later flights in the race, with the exception of the first flight. Speed and distance were also associated with the risk of falling with the shortest (2 mile), fastest races having the greatest risk. Horses participating in their first ever hurdle race were at almost 5 times the risk of falling compared to those that had hurdled before. In the steeplechasec ase-control study, downhill approaches to fences and higher take off boards were associated with an increased risk. The distance from the previous fence and the previous fence type were also associated with falling; if the previous fence was a water jump, the risk of falling was increased. The greater number of times a horse had run on the steeplechasec ourset he lower the risk of falling. This study has confirmed that falling contributes to fatality and injury in hurdle and steeplechasera cing in the UK. It has identified a number of risk factors, someo f which are modifiable. Controlled intervention studies evaluating these modifications are now required

Epidemiology and impact of Fasciola hepatica exposure in high-yielding dairy herds

The liver fluke Fasciola hepatica is a trematode parasite with a worldwide distribution and is the cause of important production losses in the dairy industry. The aim of this observational study was to assess the prevalence of exposure to F. hepatica in a group of high yielding dairy herds, to determine the risk factors and investigate their associations with production and fertility parameters. Bulk milk tank samples from 606 herds that supply a single retailer with liquid milk were tested with an antibody ELISA for F. hepatica. Multivariable linear regression was used to investigate the effect of farm management and environmental risk factors on F. hepatica exposure. Higher rainfall, grazing boggy pasture, presence of beef cattle on farm, access to a stream or pond and smaller herd size were associated with an increased risk of exposure. Univariable regression was used to look for associations between fluke exposure and production-related variables including milk yield, composition, somatic cell count and calving index. Although causation cannot be assumed, a significant (p < 0.001) negative association was seen between F. hepatica exposure and estimated milk yield at the herd level, representing a 15% decrease in yield for an increase in F. hepatica exposure from the 25th to the 75th percentile. This remained significant when fertility, farm management and environmental factors were controlled for. No associations were found between F. hepatica exposure and any of the other production, disease or fertility variables

Could it be colic? Horse-owner decision making and practices in response to equine colic

Background: Little is known about lay understanding and decision making in response to colic. Horse-owners/ carers are key to identifying colic and initiating veterinary intervention. Understanding how owners think and act in relation to colic could assist veterinary surgeons in tailoring information about colic with the aim of improving colic outcomes. Methods: A mixed methods approach was employed including qualitative in-depth interviews and a cross- sectional questionnaire. Qualitative data were analysed using Grounded theory to conceptualise processes involved in horse-owner management of colic. Following this, a cross-sectional survey was designed to test these concepts. Cluster analysis explored the role of the human-horse relationship upon colic management strategies. Results: Fifteen horse-owners with a range of colic experience participated in the interviews. A theoretical conceptual model was developed and described how horse-owners’ recognised, assessed and responded to colic. Three main management strategies were used including ‘wait and see’, ‘lay treatments’ and ‘seek veterinary assistance’. Actions in response to colic were moderated by owners’ experience of colic and interpretation of the severity of colic signs. A postal questionnaire gathered data from 673 horse-owners from the North-West of the UK. The majority (605, 89.9%) of respondents were female. Cluster analysis revealed 5 meaningful groups of horse- owners based upon assessment of questionnaire items on the human-horse relationship. These groups included 2 professional and 3 amateur owner typologies. There were differences in the responses to some questionnaire items among the identified groups. Conclusions: This study describes lay understanding and management of colic among a population of horse- owners from the North-West of the UK. The information may serve as a basis upon which to tailor existing programmes designed to educate owners about colic management strategies, and may inform veterinarians’ interactions with horse-owners.

Is equine colic seasonal? Novel application of a model based approach

BACKGROUND: Colic is an important cause of mortality and morbidity in domesticated horses yet many questions about this condition remain to be answered. One such question is: does season have an effect on the occurrence of colic? Time-series analysis provides a rigorous statistical approach to this question but until now, to our knowledge, it has not been used in this context. Traditional time-series modelling approaches have limited applicability in the case of relatively rare diseases, such as specific types of equine colic. In this paper we present a modelling approach that respects the discrete nature of the count data and, using a regression model with a correlated latent variable and one with a linear trend, we explored the seasonality of specific types of colic occurring at a UK referral hospital between January 1995–December 2004. RESULTS: Six- and twelve-month cyclical patterns were identified for all colics, all medical colics, epiploic foramen entrapment (EFE), equine grass sickness (EGS), surgically treated and large colon displacement/torsion colic groups. A twelve-month cyclical pattern only was seen in the large colon impaction colic group. There was no evidence of any cyclical pattern in the pedunculated lipoma group. These results were consistent irrespective of whether we were using a model including latent correlation or trend. Problems were encountered in attempting to include both trend and latent serial dependence in models simultaneously; this is likely to be a consequence of a lack of power to separate these two effects in the presence of small counts, yet in reality the underlying physical effect is likely to be a combination of both. CONCLUSION: The use of a regression model with either an autocorrelated latent variable or a linear trend has allowed us to establish formally a seasonal component to certain types of colic presented to a UK referral hospital over a 10 year period. These patterns appeared to coincide with either times of managemental change or periods when horses are more likely to be intensively managed. Further studies are required to identify the determinants of the observed seasonality. Importantly, this type of regression model has applications beyond the study of equine colic and it may be useful in the investigation of seasonal patterns in other, relatively rare, conditions in all species

A Cross-Sectional Survey of the Knowledge, Attitudes, and Practices of Antimicrobial Users and Providers in an Area of High-Density Livestock-Human Population in Western Kenya.

Background: Antimicrobial resistance (AMR) is one of the most important global health crises in recent times and is driven primarily by antimicrobial consumption. In East Africa, there is a paucity of data regarding the knowledge, attitudes, and practices (KAP) related to antimicrobial use (AMU). We investigate the ways in which antimicrobial users in the veterinary sector accessed veterinary antimicrobials, and common behaviors of veterinary antimicrobial users and prescribers associated with AMU and AMR. Methods: In total, 70 farmers, staff at 49 agricultural-veterinary antimicrobial shops (agrovet staff) and 28 veterinary animal healthcare workers or veterinary surgeons (veterinary professionals) were interviewed in Busia county, western Kenya in 2016 using a standard questionnaire as a framework for structured interviews. Data recorded included participant demographics, level of education, access to and sources of veterinary antimicrobials, prescribing patterns, and knowledge of AMR and antimicrobial withdrawal periods. Results: The majority of antimicrobials were accessed through informal means, purchased from agroveterinary shops; more than half of staff did not hold nationally mandated qualifications to advise on or sell veterinary antimicrobials. Approximately 40% of veterinary antimicrobials were sold without a prescription and it was noted that both price and customer preference were important factors when selling antimicrobials in almost all agrovet shops. Knowledge of the dangers associated with AMR and AMU were mostly superficial. Treatment failure occurred often, and there was a lack of differentiation between AMR and simply treatment failure. Conclusion: In this study area in East Africa with high-density human and livestock populations, AMU was primarily for maintenance of livestock health. These findings have highlighted several aspects surrounding inappropriate access to antimicrobials, and as such require attention from policy makers concerned with AMR in both livestock and human medicine sectors. Improving prescribing practices and ensuring a minimum level of general education and awareness of prescribers, as well as expanding the role of agrovet staff in antimicrobial stewardship programmes, may help begin to mitigate the maintenance and transmission of AMR, particularly amongst livestock

Epidemiology of impaction colic in donkeys in the UK

BACKGROUND: Colic (abdominal pain) is a clinical condition of serious concern affecting the welfare and survival of donkeys at the Donkey Sanctuary in the UK. One of the most commonly reported causes is due to impacted ingesta in the large intestine ("impaction colic"). However little is known about the incidence of, or risk factors for, this condition. Here we describe the epidemiology of colic in donkeys, specifically impaction colic. We focus on temporal aspects of the disease and we identify environmental and management related risk factors for impaction colic in UK donkeys. RESULTS: There were 807 colic episodes in the population of 4596 donkeys between January 1(st )2000 and March 31(st )2005. The majority (54.8%) of episodes were due to a suspected or confirmed diagnosis of impaction of the gastrointestinal tract. The mortality risk for all colics (51.1%) was higher than reported in other equids. The incidence rate of all colics (5.9 episodes per 100 donkeys per year) and of impaction colic (3.2 episodes) was similar to that in horses. A retrospective matched case-control study of all impaction colics from January 2003 (193) indicated that older donkeys, those fed extra rations and those that previously suffered colic were at increased risk of impaction. Lighter body weight, musculo-skeletal problems, farm and dental disease were also significantly associated with a diagnosis of impaction colic. CONCLUSION: To our knowledge this is the first study to estimate the incidence rate of colic in a large population of donkeys in the UK. In contrast to other equids, impaction was the most commonly reported cause of colic. We identified several risk factors for impaction colic. Increasing age, extra rations and previous colic are known risk factors for colic in other equids. Results support the hypothesis that dental disease is associated with impaction colic. Musculo-skeletal problems may be associated with colic for various reasons including change in amount of exercise or time at pasture. Other associated factors (weight and farm) are the subject of further research. Identification of risk factors for impaction colic may highlight high risk donkeys and may allow intervention strategies to be introduced to reduce the incidence of the disease

Factors associated with dog ownership and contact with dogs in a UK community

BACKGROUND: Dogs are popular pets in many countries. Identifying differences between those who own dogs or have contact with dogs, and those who do not, is useful to those interested in the human-animal bond, human health and for provision of veterinary services. This census-based, epidemiological study aimed to investigate factors associated with dog ownership and contact with dogs, in a semi-rural community of 1278 households in Cheshire, UK. RESULTS: Twenty-four percent of households were identified as dog-owning and 52% owned a pet of some type. Multivariable logistic regression suggested that households were more likely to own a dog if they had more occupants (five or more); if they had an adult female household member; or if they owned a horse. The age structure of the households was also associated with dog ownership, with households containing older children (between six and 19 years of age) and young adults (between 20 and 29 years of age), more likely to own dogs. We also found that dog owning households were more likely to be multi-dog households than single-dog if they also owned a cat or a bird, or if the household contained a person of 20–29 years old. Dog owners reported increased contact with dogs, other than their own, compared to those that did not own dogs and this contact appeared to be mainly through walking. CONCLUSION: Some household types are more likely to own a dog than others. This study supports the suggestion that dogs are more common in families who have older children (6–19 years), as has been generally observed in other countries. Dog owners are also more likely to have contact with dogs other than their own, compared with those not owning a dog