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The Creole sheep breed developed in the department of Córdoba, Colombia has little research on growth traits, for this reason the objective of this study was to evaluate traits associated with the growth of Creole hair sheep in two populations of Córdoba, Colombia. Fifty-five Creole animals from two production systems were used. Weighing was performed every 15 days from birth to 6 months of age and loin eye area (LEA) measurements were taken by ultrasound at 4 and 6 months of age. The traits evaluated were birth weight (BW), weaning weight (WW90), weight at six months of age (W6M), preweaning (PWWG) and postweaning weight gain (POWWG) and LEA. The average for BW was 2.63 ± 0.65 kg, for WW90 it was 11.19 ± 3.78 kg, for W6M it was 15.61 ± 3.93 kg and for PWWG and POWWG it was 0.095 ± 0.04 and 0.06 ± 0.03 kg/d, respectively. It was found that the sex of the lamb affected (P≤0.05) the variables PDA90, PA6M and GPPRD. The type of farm had influence (P≤0.05) on all the growth traits evaluated. The results suggest that, it would be necessary to improve the feeding systems in the populations studied and initiate a selection process in order to improve the evaluated traits.

Características de crecimiento y medidas del área del ojo del lomo en ovinos criollos del departamento de Córdoba, Colombia