Comparative Assessment of Concentration, Volume and Motility of Semen among Different Breeds of Dairy Bull

Abstract

The present study was undertaken to assess the semen quality of different breeding bulls reared in Central Cattle Breeding and Dairy Farm (CCBDF), Savar, Dhaka. Therefore, the main objective of this study was to determine the physical and chemical properties of different bulls. A total of 57 dairy bulls, Local cross (L×F(n=6)), Local (n=6), Red Chittagong Cattle (R.C.C (n=6)), Sahiwal (SL (n=6)), Sahiwal cross (SL×F(n=6)), Friesian cross (L×F×F(n=6)), Friesian (50% H.F (n=6)), Friesian (62.5% H.F (n=6)), and Friesian 75% (H.F (n=9)) were used. The semen of different crossbred and local bulls was examined for ejaculate volume, concentration, and motility percent of sperm. It was observed that the maximum average ejaculate volume was obtained from L×F×F (10.50 ±4.04) ml and the minimum from 62.5% H.F (6 ±0.89) ml. The maximum average sperm concentration was obtained from Local (1345.17±230.08 million/ml), and the minimum was SL×F (1057.67±286.74 million/ml). The maximum average motility was obtained from 75% H.F. (65.56 ± 5.27) % and the minimum was 62.5% H.F. (61.67 ± 4.08) %. These parameters are highly responsible for producing the best quality semen. Although the motility percentage of semen was highest in 75% H.F. cross, the local breed has the highest concentration of sperm in semen. It may be concluded that the performance of L×F Holstein Frisian crossbreeds was best based on their overall characteristics; conversely, SL×F crossbreeds showed comparatively less quality semen in overall characteristics in semi-intensive systems. Therefore, it is recommended that local breed upgradation is important for milk production, but introducing 100% HF induces calving ease.