Movement patterns of sperms at different bull breeds using computer- assisted sperm analysis (CASA)

Bull plays an important role in the implementation of artificial insemination (AI), especially as a producer of spermatozoa. The movement pattern of sperms itself determines bull fertility. This is very important for the process of capacitation in the female reproductive tracks. The purpose of this study was to determine the differences in the characteristics of the motility of frozen semen at various breeds of bulls. This study was conducted in May 2020, at the Processing Semen Laboratory, Faculty of Animal Science, Hasanuddin University. This study was designed with 6 breeds of different bulls and 3 straws for replications. The results of the study were analyzed statistically using the one-way ANOVA. The results showed that the LIN and WOB values of frozen semen of Bali had significantly higher (P<0.05) than the other breeds. Likewise, STR values in Bali sperms had significantly higher (P<0.05) than Simmental, F H, Angus, and Brahman. VAP, VCL, VSL, and ALH values in Simmental had significantly higher (P<0.05) than the other breeds. The parameter distance achieved by Simmental sperms; DAP had significantly higher (P<0.05) in comparison to Bali and FH. Simmental had DCL highest value, and significantly (P<0.05) higher than Bali, FH, Angus, and Brahman. While Simmental had a significantly higher DSL value (P<0.05) than those Bali and FH.