DETERMINATION OF THE FREQUENCY OF PHENOTYPIC EXPRESSION OF THE COAT IN HORSES OF THE MANGALARGA MARCHADOR AND QUARTER HORSE BREED

Abstract

Modern horse farming is the horse agribusiness complex, whose interest for sport, leisure and work is growing. In this sense, the demand for animals of certain coats aims at the associated service between performance and morphology in the same individual and its descendants. The objective of this study was to determine the FEFP (frequency of phenotypic expression of the coat) and its particularities in QM (Quarter Horse) and MM (Mangalarga Marchador) horses. To this end, the study was developed, through remote work, between August 1, 2020 and July 31, 2021, through retrospective research, through free access to a research website and the associations of the breeds, In analysis of 1,029 individuals of the QM breed and 982 of the MM breed, randomly selected, of both sexes,  lineages, their respective fathers, grandfathers and grandmothers, paternal and maternal, calculation that aims at the FEFP registration and particularities of the coats. The means of the QM breed will be compared using the Scheffé test, all at the 5% level of significance. On the other hand, the MM breed was observed to have 19.82% sorrel animals, 5.15% bay, 27.11% brown, 1.36% lobuno, 19.24% pampa, 8.16% black, 2.62% rosilho and 11.95% tordillo. Under experimental conditions, when comparing male and female animals with different blood grades: own siblings, paternal siblings, maternal siblings and non-siblings, it is considered that the QM and MM breeds have a casuistry of occurrence of similar coats between sexes and different blood grades similar to the other known equine breeds.

DOI: https://doi.org/10.56238/sevened2025.001-001