Breeding soundness examination and sexual dimorphism of young Bali cattle bull

Abstract

The objectives of the research were to evaluate the Breeding Soundness Examination and Sexual Dimorphism of young Bali bulls.  There were 33 healthy, under normal condition and 25 heads had reddish-brown and 8 had dark chestnut brown skin color. The data collected were body weight (kg), scrotal circumference (cm), libido (score 1-3), semen volume (ml), color of semen, motility (%), concentration of sperm (×107/ml), live spermatozoa (%) and testosterone levels (ng/ml). The data were analyzed descriptively with a T-test for statistical analysis. The results Breeding soundness examination showed that bodyweight of 214 ± 25.2 (160-252) kg, Scrotal circumference was 20.96 ± 1.19 (19-24) cm, libido (score 1-3) of 1.12 ± 1.19 (0-3), semen volume of 2.15 ± 1.02 (1-4) ml, motility of 51.25± 9.54 (40-65) %, concentration of sperm of 668.51 ± 216.39 (340-952) x 107/ml, live spermatozoa of 52.51 ± 8.86 (40-60) % and testosterone level of 6.64 ± 0.28 (4.93-7.51) ng/ml. Results of the evaluation of sexual dimorphism of reddish yellow and dark chestnut brown skin color consist body weight, scrotal circumference, and testosterone levels were found nor significantly different (P>0.05) those values were 224.71±25.85(n=25) and 210.8±24.69kg (n=8), scrotal circumference were 20.75±1.28(n=25) and 21.04 ±1.18 cm(n=8), 6.41±0.78 (n=25) and 6.72±0.56 ng/ml (n=8) respectively. It can be concluded that breeding soundness examination in young Bali bulls can be used to evaluate phenotype variations. There was no effect of sexual dimorphism on body weight, scrotal circumference, and testosterone levels  Bali bull age of 1,5 to 2 years.