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Articles by L. Asad
Total Records ( 1 ) for L. Asad
  L. Asad , S.S. Husain , M.G.M. Rahman , M.A.M.Y. Khandoker , M.E. Hossain and M.Z. Rahman
  In the present experiment volume, concentration, mass movement and forward movement of semen of different genotypes of bulls relating to body weight, age, sexual maturity and season were evaluated. A total of 1422 semen samples from 22 different bulls of seven genotypes were included in this study from Central Cattle Breeding Station (CCBS), Shavar, Dhaka, Bangladesh. Among the seven genotypes of bulls, only the Friesian bulls gave the largest volume of semen (14.26 ± 0.19 mL), mass movement (4.87 ± 0.07 grade) and forward movement (61.29 ± 0.31%) of sperm. While considering the age, the bulls of 4 to 6 years old provided the highest semen volume (13.60 ± 0.18 mL), sperm concentration (1219.89 ± 10.72 million sperm mL-1), mass movement (4.66 ± 0.06 grade) and forward movement (61.34 ± 0.28%) of sperm. The highest volume (12.01 ± 0.22 mL) of semen, sperm concentration (1182.29 ± 14.30 million sperm mL-1), mass movement (4.40 ± 0.08 grade) and forward movement (58.74 ± 0.54%) of sperm was found in 3 years age of sexual maturity. In case of body weight, the maximum volume of semen (12.16 ± 0.22 mL) and forward movement (60.25 ± 0.45%) of sperm was obtained in the bulls of 400 to 600 kg body weight and the volume was maximize (12.15 ± 0.23 mL) in summer season. The findings suggested that Friesian produced better quality semen than other genotypes while 4 to 6 years age and >600 to 700 kg body weight of bulls performed better than other age and body weight groups. The summer season gave better quality semen than other seasons.
 
 
 
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