Desarrollo folicular y crecimiento corporal en vaquillas Brahman prepúberes de dos estructuras corporales diferentes.

The effect of frame score (EC) in Brahman heifers on follicular development and body growth at puberty was evaluated. Ten prepubertal heifers were grouped according to their EC, categorized as small and large. Follicular ovarian development, ovulation, and corpus luteum formation were monitored through ultrasound. Measurements of body growth characteristics were taken every 14 days. Correlation and variance analyses were conducted using SAS (9.6) correlation and GLM procedures. The EC of large heifers was 10% higher than that of small heifers (P<0.0001). EC was significant for the total number of follicles (NTF) at puberty; small heifers had an average of 15.65 follicles versus 12.69 follicles in large heifers at puberty (P<0.0001). Furthermore, a negative correlation (P<0.0001) was observed between days to puberty and the weight of the animals and EC (-0.33 and -0.35, respectively). EC in Brahman heifers only had an effect on NTF; however, animals in each group maintained a similar EC throughout the study and were different between groups at puberty. [ABSTRACT FROM AUTHOR]