Morphological Characterization of Turkish Ambling Horses.

Morphometric information on ambling horses raised in Türkiye remains limited. This study aimed to characterize the morphometric traits of ambling horses according to breeding origin, age, and sex and to provide baseline phenotypic information on the studied population. A total of 102 naturally ambling horses were evaluated, including indigenous horses raised in Bursa (n = 28), indigenous horses raised in Nazilli, Aydın Province (n = 65), and Afghan-origin horses raised in Bursa (n = 9). Morphometric measurements of the head, body, and limbs were recorded, and the effects of breeding origin, age, and sex were analyzed using a general linear model. Significant differences among breeding origins were observed for several morphometric traits (p < 0.05). Afghan-origin horses generally exhibited higher values for several body measurements, particularly withers height, body length, chest depth, chest width, and heart girth, reflecting morphometric differences within the studied sample. Age- and sex-related differences were also observed for several morphometric traits. The strongest correlation was observed between CH and BH (r = 0.920, p < 0.001), followed by WH and BH (r = 0.873, p < 0.001) and WH and CH (r = 0.860, p < 0.001). ITH was also positively correlated with BH (r = 0.825), CH (r = 0.808), and WH (r = 0.744) (all p < 0.001). Overall, this study provides baseline morphometric information on ambling horses from different breeding origins raised in Türkiye and contributes to the phenotypic characterization of the studied population. However, because the Afghan-origin group included only nine horses and the distribution of animals among some groups was unbalanced, the observed differences should be interpreted with caution. Further studies involving larger and more balanced populations are needed to confirm these findings.