The aim of this study was to determine the frequency of reasons for elimination in international endurance competitions (IEC) of 80-90, 120 and 160 km in Chile in the period of 2007-2014. Records were obtained from the International Equestrian Federation database. Registered data included the distance and number of participating horses as well as those that successfully completed the race and those eliminated. In the latter case, data considered those that were retired, disqualified and failed to qualify. Also, average speed of winners for each distance was obtained. Ninety nine races were evaluated (42 in the range of 80-90 km, 41 in 120 km, and 16 in 160 km), with 919 participating horses, from whom 564 (61.4%) completed the competition. There were 3.2% disqualified horses 4.1% retired and 31.3% failed to qualify. Within the later, 25.4% failed to qualify due to lameness, 4% for metabo...

The aim of this study was to determine the testicular size and to estimate the daily sperm production (DSP) in entire and unilaterally castrated males of the Chilean Horse breed. Sixty one (31 entire and 30 unilaterally castrated) stallions, with ages between 3 and 20 years of age were studied. A scrotal caliper was used to measure height, width and length of testicles. Testicular volume (TV) was calculated and DSP was estimated using formulae proposed by Sertich (2011).  Testicular measures in entire stallions were larger than expected and without statistical difference between testicles. The estimated DSP in entire stallions was 7.67 ± 2.32 x 109 spermatozoa. There were no differences in size related to the remaining testicle in unilaterally castrated stallions, but height, width and TV were larger than in entire stallions (p<0.05). DSP in unilaterally castrated stallions was 5.13...

El objetivo del estudio fue determinar la frecuencia de los motivos de eliminación en competencias de enduro internacional (CEI) de 80-90, 120 y 160 km, categoría adulto, realizadas en Chile en el periodo 2007-2014. La información fue tomada de la base de datos de la Federación Ecuestre Internacional, registrándose la distancia y número de equinos participantes, así como aquellos que finalizaron y aquellos que fueron eliminados de la carrera. En estos últimos se consideró los caballos retirados, descalificados y los que fallaron en calificar. Además, se registró la velocidad promedio de los ganadores para cada distancia. Se analizaron 99 carreras (42 de 80-90 km, 41 de 120 km y 16 de 160 km), en las que participaron 919 caballos, donde 564 (61.4%) finalizaron con éxito las carreras. El 3.2% de los caballos fue descalificado, 4.1% retirado y 31.3% falló en calificar. De estos...

El objetivo del presente estudio fue establecer el tamaño testicular y estimar la producción espermática diaria (PED) en sementales de raza Caballo Chileno enteros y castrados unilateralmente. Se estudiaron 61 sementales (31 con ambos testículos y 30 castrados unilateralmente), de 3 a 20 años de edad. Se midió el alto, ancho y largo de los testículos con un vernier escrotal, se calculó el volumen testicular (VT) y se estimó la PED utilizando las fórmulas propuestas por Sertich (2011). Las medidas testiculares en los sementales con ambos testículos fueron mayores a las esperadas y sin diferencia estadística entre testículos contralaterales en sementales enteros. La PED estimada en sementales con ambos testículos fue de 7.67 ± 2.32 x 109 espermatozoides. En los sementales castrados unilateralmente no hubo diferencias de tamaño relacionadas con el testículo que mantenían, ...

The objective of this study was to determine the frequency of classic stereotypies in endurance horses of Región Metropolitana (Chile) and the association of these abnormal behaviors with age and sex of the animals. All resident endurance horses from 8 equestrian centres of the Región Metropolitana were studied (n=107). A description of classic stereotipies (crib-biting, weaving and box-walking) was given to each horse keeper and then they were asked for this presence or absence, along the name, sex, age and breed, of every horse under their care. To analyze the data, horses were divided by age into 3 groups: 3 to 6 years (n=28), 7 to 9 years (n=42) and 10 to 18 years (n=37). Based on their sex, they were divided into 3 groups: stallions (n=11), geldings (n=64) and mares (n=32). Results are expressed as percentages. Fisher`s test with p < 0.05 was used for statistical analysis of th...

The objective of this study was to determine the frequency of classic stereotypies in endurance horses of Región Metropolitana (Chile) and the association of these abnormal behaviors with age and sex of the animals. All resident endurance horses from 8 equestrian centres of the Región Metropolitana were studied (n=107). A description of classic stereotipies (crib-biting, weaving and box-walking) was given to each horse keeper and then they were asked for this presence or absence, along the name, sex, age and breed, of every horse under their care. To analyze the data, horses were divided by age into 3 groups: 3 to 6 years (n=28), 7 to 9 years (n=42) and 10 to 18 years (n=37). Based on their sex, they were divided into 3 groups: stallions (n=11), geldings (n=64) and mares (n=32). Results are expressed as percentages. Fisher`s test with p < 0.05 was used for statistical analysis of th...