Resumen

HENAO RESTREPO, Guillermo  y  GONZALEZ CADAVID, Verónica. RELATIONSHIP OF LIVE WEIGHT AND CORPORAL CONDITION VARIATION WITH POSPARTUM FOLLICULAR DYNAMIC IN PRIMIPAROUS ZEBU COWS. Rev. Fac. Nac. Agron. Medellín [online]. 2008, vol.61, n.1, pp.4394-4399. ISSN 0304-2847.

Twenty primiparous suckling Zebu cows were selected to establish the relationship between cow weight losses and body condition (CC) changes with indicators of follicular dynamic until 60 days pospartum. Cow's weight and CC were measured at calving and every 15 days up to 60 days. Follicular waves were followed using daily ovarian ultrasonography; the number of follicles with diameters ≥3 mm was counted, diameter of the dominant follicles was measured, follicular growth rate and the interdominance period were calculated. Data was analysed using a simple lineal regression model between cow weight and CC changes at 15, 30, 45 and 60 days pospartum and follicular dynamics indicators. The decrease in weight of primiparous suckling Zebu cows through the early pospartum, coincided with an increase (P≤0.05) in the diameter of dominant follicles and with number of follicles per wave, and was not related with follicular growth rate and interdominance interval. Changes in CC were not related with variables indicators of follicular development.

Palabras clave : Bos indicus; dominant follicle; bovine reproduction; ovarian ultrasonography.

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