Estudo analítico das endoscopias das vias aéreas de equinos PSI durante o período de 1993-2003 e avaliação dos resultados de procedimentos cirúrgicos laringeanos realizados no Jockey Club de São Paulo durante o período de 1998-2003

Pós-graduação em Medicina Veterinária - FMVZ

Genetic parameters for earnings in Quarter Horse

In this study, we estimated the heritability (h(2)) of earnings in the Quarter Horse in order to evaluate the inclusion of this trait in breeding programs. Records from 14,754 races of 2443 horses from 1978-2009 were provided by Sorocaba Hippodrome, Sao Paulo, Brazil. All ancestors of the registered horses were included in the pedigree file until the 4th generation. Log-transformed performance measures (LPM) were analyzed for animals aged 2, 3, and 4 years and during their entire career. The h(2) estimates were obtained using a multi-trait model and Gibbs sampling that included the effects of sex, year of race, and animal in all analyses. Five analyses were performed: 1 in which LPM was divided by the number of prizes, 1 in which LPM was divided by the number of race starts, and 3 analyses that included the number of prizes, number of race starts, and both (LPM_cNPS) as covariates. Analysis was performed with and without inclusion of the maternal effect. Models were compared based on the deviance information criterion and LPM_cNPS including maternal effects was found to be the best model. The h(2) estimates and standard deviation obtained using model LPM_cNPS were 0.19 +/- 0.08, 0.21 +/- 0.08, 0.22 +/- 0.09, and 0.21 +/- 0.07 for earnings at 2, 3, and 4 years of age and total career, respectively. Our analyses indicate that earnings are subject to selection and can be included in breeding programs to improve the racing performance of Quarter Horses.

Relação entre a reatividade de pontos de acupuntura e atividade física com afecções ortopédicas determinadas por exames de imagens em equinos

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Relação entre a reatividade de pontos de acupuntura e atividade física com afecções ortopédicas determinadas por exames de imagens em equinos

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Lesions of the gastric mucosa in adult horses of different disciplines: a review

The prevalence of gastric mucosal lesions in the thoroughbred race horse has been the subject of numerous studies. The frequency of gastric ulcer diseases in the adult horse of other sport disciplines are less well investigated. Recent data show that gastric mucosal lesions in non thoroughbred racehorses occur considerably more frequently than previously thought. Prevalences of up to 93 % in endurance horses, of up to 87 % in standardbreds, of 40 % in western horses, of 63 % in show-jumping horses, of 71 % in broodmares and of 53 % in leisure horses are reported. Since the introduction of gastroscopy in equine medicine in the 1990s, numerous scoring-systems to describe the number, the severity and the localisation of the lesions have been used. Unfortunately, no standardized scoring system is generally accepted to date. A direct comparison of results from different studies is therefore difficult. Comparison and interpretation of data is further hampered by the heterogenicity of the study populations which consist of horses of different age-groups, breeds and exercise intensity.

Retrospective evaluation of all recorded horse race starts in Switzerland during a four-year period focusing on discipline specific risk factors for clinical events

REASONS FOR PERFORMING THE STUDY: Racetrack injuries are of welfare concern and prevention of injuries is an important goal in many racing jurisdictions. Over the years this has led to more detailed recording of clinical events on racecourses. However, risk factor analyses of clinical events at race meetings have never been reported for Switzerland OBJECTIVE: To identify discipline-specific factors that influence the occurrence of clinical events during race meetings with the ultimate aim to improve the monitoring and safety on racetracks in Switzerland and optimise racehorse welfare. STUDY DESIGN: Retrospective study of horse race data collected by the Swiss horse racing association. METHODS: All race starts (n = 17,670, including 6,198 flat, 1,257 obstacle and 10,215 trot race starts) recorded over a period of four years (2009-2012) were analysed in multivariable mixed effect logistic regression models including horse and racecourse related data. The models were designed to identify discipline specific factors influencing the occurrence of clinical events on racecourses in Switzerland. RESULTS: Factors influencing the risk of clinical events during races were different for each discipline. The risk of a clinical event in trot racing was lower for racing on a Porphyre-sand track than on grass tracks. Horses whose driver was also their trainer had an approximately two times higher risk for clinical events. In obstacle races, longer distances (2401-3300 m and 3301-5400 m respectively) had a protective effect compared to racing over shorter distances. In flat racing, five racecourses reported significantly less clinical events. In all three disciplines, finishing 8th place or later was associated with clinical events. CONCLUSIONS: Changes in management that aim to improve the safety and welfare of racehorses, such as racetrack adaptations, need to be individualised for each discipline.

Foal registrations of Illinois conceived and foaled standardbreds.

Description based on: 1988.