Estimation of genetic parameters for linear type traits in the population of sport horses in the Czech Republic

Morpho-Functional Traits in Pura Raza Menorquina Horses: Genetic Parameters and Relationship with Coat Color Variables

“…Also, the whole classes were used in 47.83% of the linear analyzed traits, being 6 of more classes used in 89.13% of the analyzed traits. Therefore, we can consider that the complete scale was used in the population analyzed, as has occurred in other horse po-pulations (Czech-Moravian Belgian horses and Silesian Noriker [ 22 ]; Old Kladrub horses [ 23 , 24 ]; Pura Raza Español horses [ 25 , 26 ]; and sport horses in the Czech Republic [ 9 ]). All of the variables met the assumption of a normal distribution.…”

“…On the other hand, the highest CV was estimated for the form of the withers (13; 32.89%) within the morphological traits and trotting suspension (46; 25.45%) within the performance traits, showing that there is higher phenotypic variation in these traits than in other traits. The CVs obtained were in the range of those reported for linear traits in Dutch Warmblood Riding horses (10.14–26.04% [ 10 ]), Heavy Draught horses (11.38–38.54% [ 1 ]), Old Kladrub horses (2.39–40.14% [ 22 , 23 , 24 ]), Pura Raza Español horses (6.94–51.68% [ 25 , 26 , 27 ]), and sport horses in the Czech Republic (2.91–20.27% [ 9 ]). In general, the analyzed population showed sufficient variability.…”

“…This is because the heritability estimates for conformation traits are often higher than those estimated for performance traits. Some authors [ 9 ] have affirmed that the efficiency of indirect selection for performance traits depends on genetic variability of the conformation traits and is also related to genetic associations between conformation and functional performance traits [ 10 , 11 ].…”

“…Unfortunately, most of the information on sport performance only becomes available later in the horse’s life. For this reason, the selection of riding horses is based primarily on other related traits, which are available at a younger age and have higher heritability values and adequate correlations with the selection traits [ 9 ] (such as conformation traits). In this context, to economize money and time, Gómez et al [ 2 ] reco-mmended the use of a two-stage selection program, with a first selection based on the morphological features of the animal and a second selection based on the animal’s performance in equestrian events for Spanish horses.…”

Genetic consistency between gait analysis by accelerometry and evaluation scores at breeding shows for the selection of jumping competition horses

“…Consequently, it would be of considerable interest to determine which characteristics of gaits are genetically correlated, positively or negatively, with jumping ability. Gait characteristics are usually recorded using linear profiling [ 6 – 9 ] or scoring by judges [ 10 – 12 ]. Judge scores or vet scores may have low reliability compared to objective measurements Objective measurements have been developed using kinematic and accelerometric techniques to quantify gait traits in horses.…”