Three-year monthly variations in the number of spermatozoa by ejaculate and spermocytogram parameters of Djalonkes ram semen in Cte dIvoires forest zone

Monthly variations in the number of spermatozoa per ejaculate and sperm spermocytogram parameters (percentage of dead spermatozoa, percentage of global anomalies) were studied, for three years, in forty Djalonke rams from the southern forest of the Cote d'Ivoire. Ivory. A sperm ejaculate was harvested twice a week, along with the artificial vagina. These parameters increased overall in July (2.12 ± 0.08.10 9 to 2.52 ± 0.1.10 9 sptz / ej for the number of spermatozoa per ejaculate, 13.71 ± 1.3 to 23.75 ± 2, 2% for the percentage of dead spermatozoa, 2.18 ± 0.33 to 7.7 ± 1.1% as a percentage of global anomalies). Per year, the number of spermatozoa per ejaculate increased in May (3.23 +/- 10 9 sptz / day in 1992, 2.73 ± 0.2 4. 109 SPTZ / ej in 1994) and June (2.94 ± 0.2. 10 9 SPTZ / ej in 1993, 2.73 ± 0.12. 10 9sptz / ej globally). The percentage of dead spermatozoa increased from March (33 ± 4.3% in 1992) to April (2.06 ± 0.1% in 1993, 23.61 ± 2.2% overall) then; July (32.85 ± 2.5% in 1993, 9.6 ± 0.77% in 1994, 23.75 ± 2.2% overall) to September (30.1 ± 8.4% in 1992, 22 ± 2.8% in 1994, 18.55 ± 1.8% overall). The percentage of global anomalies increased in July (7.04 ± 1.4% in 1992, 11.7 ± 1.7% in 1993, 7.7 ± 1.1% overall) and September (4.68 ± 0.9% in 1994). These variations and their overall trend trends indicate the period from July to September as unfavorable to sperm quality, due to the increase in spermocytogram parameters. However, these alterations were not sufficient to affect sperm quality. The ram semen analyzed Djalonke therefore has maintained good fertility all year round,