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| Página | 2/11 | | Encontro | 18.02.2021 | | Tamanho | 162.02 Kb. |
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ABSTRACT
The coefficient of inbreeding was estimate and its effect on linear traits of the Mangalarga Marchador
horses reared in a ranch in the North of Minas Gerais was evaluated. The characteristics studied were
morphometric traits such as wither and hip height, length of head, neck, back-loin, hip and body, as well
as chest and hip width. The archive had 2186 data on the genealogy of animals from the herd register of
the Catuni Farm. The coefficient of inbreeding (F) was calculated and its effect was evaluated by means
of simple linear regression on the linear traits. Of all animals, 27.6% showed inbreeding, with an F
average of 1.4% in the population. Considering only the inbred animals, the average consanguinity
reached 5.3% minimum of 0.1 and maximum of 28.1%. Negative effects of inbreeding on the
morphometric traits were not seen, except for hip width, where for each 10% increase in F there was
increase of 0.576cm. Possibly due to the low value found, inbreeding did not influence the other
evaluated characteristics.
Keywords: horse, consanguinity, inbreeding depression, linear measures
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