Effect of semen collection frequency on the semen characteristics of dromedary camels

Animal Reproduction Science
S Al-BulushiS P de Graaf

Abstract

The effect of semen collection frequency (once or twice per week) on the sexual behaviour, libido and semen characteristics (volume, colour, gross activity, viscosity, sperm concentration, morphology, motion characteristics and membrane viability and acrosome integrity) of dromedary camels (n = 7) was investigated over the course of 8 weeks. Results showed that frequency of collection influenced male camel libido (P < 0.05) but not sexual behaviour. Once per week collection frequency resulted in greater gross activity (2.7 ± 0.1 compared with 1.7 ± 0.1, P < 0.001) and greater sperm concentration (403 ± 16 compared with 261 ± 18 × 106 spermatozoa/mL, P < 0.001) compared to ejaculates collected twice per week. When collected twice per week, ejaculates collected during the first 3 weeks had a greater sperm concentration than those collected from week 4 onwards (P < 0.001). All ejaculates (100%) collected once per week 'qualified' (Criteria: > 60% total motility or > 100 × 106 spermatozoa/mL) for subsequent processing, but when collected twice per week the percentage of qualified ejaculates dropped sharply after three weeks (P < 0.001; 69% of ejaculates qualified over 8- week collection period). Twice weekly collection frequency ca...Continue Reading

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