FACULTY OF VETERINARY MEDICINE

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    Spermiogram and testicular morphological studies of the buck after treatment with ethanol leaf extract of spondias mombin
    (Faculty of Veterinary Medicine, Usmanu Danfodiyo University, Sokoto-Nigeria, 2017-04) Oloye, A. A.; Ola-Davies, O. E.; Ajayi, O. L.; Oyeyemi, M. O.; Olurode, S. A.; Emikpe, B. O.
    Twelve sexually matured West African Dwarf bucks from were used for the experiment. Plant extraction was by cold extraction method using hexane and ethanol as solvents. All the goats had bilaterally well descended free testicles. They were kept in standard goat pen, were served water ad libitum, centrosema plant and ration. They were stabilised for two weeks after which pre-treatment spermiogram was done followed by 14 days of oral administration of 800mg/kg ethanol leaf extract of Spondias mombin. Spermiogram was repeated after treatment. Two randomly selected goats were then castrated through a midline pre-scrotal incision for morphological study and histology of the testes and epididymides. Total spermatozoa morphological abnormalities in pre-treatment of 17.1% was significantly (p≤0.05) higher than the 10% recorded for post-treatment. Curved mid-piece (1.8%) and bent tail (1.8%) constituted the highest abnormalities post-treatment while curved tail (3.5%) was highest pre-treatment. Mean values of progressive motility and percentage liveability were significantly higher (p≤0.05) in post- treatment (96.17±3.10% and 98.25±1.36% respectively) compared to pre-treatment (80.83±11.84% and 78.75±9.56% respectively). Post-treatment sperm concentration (2.50±0.32 x109 cells/ml) compared with pre-treatment (2.32±0.36 x109 cells/ml) was not significantly different. Post-treatment gross and histological features of the bucks’ testes and epididymis were normal. The work revealed that Spondias mombin at 800mg/kgBW improved semen quality in bucks indicating its usefulness as a potential profertility agent.
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    Effect of aqueous extract of spondias mombin on the spermiogram of wistar rats
    (2011) Oloye, A. A.; Oyeyemi, M. O.; Ola-Davies, O. E.; Innamah, O. A.
    Twenty-five male rats were divided into four groups (A-E) and treated for twenty-one days with aqueous leaf extract of Spondias mombin which is a fruit tree whose leaf extract is commonly consumed as local remedies in traditional medicine practice. Graded dosages of the extracts were assigned to the groups as follows: 200mg/kg, 400 mg/kg, 600 mg/kg and 800 mg/kg for groups B, C, D and E, respectively. Group A rats which serve as control were given distilled water. Thereafter, spermiogram (mass activity, progress motility, live-dead and morphology) was evaluated. Rats treated with aqueous extracts of spondias mombin at 600 mg/kg body weight has the highest (p<0.05) spermatozoa concentration of 40.51x106 cells/ml. compared with other groups A, B, C and E which had 21.48 x 106, 29.58 x 106, 35.81 x 106/ml, respectively. At dosage of 800 mg/kg highest (p<0.05) sperm motility of 70 ± 4.81% was observed. Compared with other groups A, B, C and D which had 65.0 ± 0.00, 65.5 ± 6.71 and 68.0 ± 2.89%, respectively. The percentage average livability of the control group and of those given 200 mg/kg BW, 70 ± 23.45 and 70 ± 23.09, respectively, were lower than those from group C (77.5 ± 15.55), D (87.5 ± 17.68) and E (80.0 ± 17.32) with group D having the highest average percentage livability. Coiled tail was the predominant abnormality in group A, B and E consisting 40.3%, 24.3% and 30.0% of the total abnormalities, respectively. The work recommended aqueous extract of spondias mombin at concentration of 600mg/ml for of fertility enhancement in male animals.
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    Effect of successive ejaculations on the spermiogram of West African dwarf goats (Capra hircus L.)
    (Faculty of Veterinary Medicine, University of Zagreb, 2000) Oyeyemi, M. O.; Akusu, M. O.; Ola-Davies, O. E.
    Twenty healthy adult male (bucks) West African dwarf goats (WADG) aged between 2 to 4 years and with a mass of from 16 to 20 kg were used in this study. They were randomly assigned into four groups of five bucks per group. In group A, semen was collected once a week for a period of eight weeks, while in group B semen was collected twice a week for a period of eight weeks, once a day for 21 days in group C, and twice daily at an interval of five hours for 21 days in group D. Live body masses, height at withers, scrotal length and scrotal circumference were not affected by successive ejaculations. The ejaculate volume decreased as the frequency of ejaculations increased, although the decrease was not significant (Group A 0.44±0.07, B 0.41±0.08, C 0.38±0.07 and D 0.36±0.08 ml) while the ejaculate colour was either milky or creamy. Mass sperm movement showed swirling waves and scored 4 in all groups, while the percentage progressive motility ranged between 88.7±3.10 and 94.54±3.00%. Percentage of live spermatozoa (Group A 96.57±2.40, B 96.24±2.53, C 96.10±2.28 and D 96.10±2.50%) was not affected by successive ejaculations although a decrease in sperm concentration was observed as the number of successive ejaculations increased. There was a significant increase (P<0.05) in abnormal spermatozoa as frequency of ejaculation increased.