Sekoni, V.O : Publications

Theses

1. V.O. Sekoni, (1974). Studies on the dimensions of parts of the female reproductive tract in the Zebu cattle. Final year D.V.M. Project, University of Ibadan, Nigeria (25 pages).

2. V.O. Sekoni, (1978). The incidence of abnormal spermatozoa in bull semen and some causes of variations. M.S. Thesis, University of Minnesota, Minneapolis-St. Paul, U.S.A. (147 pages). TWO INTERNATIONAL JOURNAL PAPERS PUBLISHED FROM (MS) THESIS. [Abstract]

3. V.O. Sekoni (1987). Effects of Trypanosoma vivax, Trypanosoma congolense infections and season on reproduction in the bull. Ph.D. Thesis, Ahmadu Bello University, Zaria, Nigeria. (187 pages). THIRTEEN INTERNATIONAL JOURNAL PAPERS PUBLISHED FROM (Ph.D) THESIS. [Abstract]

Journal Publications

4. V.O. Sekoni, B.K. Gustafsson, and E.G. Mather (1981). Influence of wet fixation, staining techniques, and storage time on bull sperm morphology. Nordisk Veterinaemedicin (Nord. Vet. Med.) 33; 161-166. Copenhagen, Denmark, Scandinavia.

5. V.O. Sekoni, D.I.K. Osori and V. Nagaratnam (1982). Some ejaculate characteristics and observations on the libido of a South Devon bull in Northern Nigeria. British Vet. J. 138: (2): 168-174.

6. V.O. Sekoni, (1983). Terminal sterility in a Friesian bull naturally infected with chronic scrotal cutaneous streptothricosis (Kirchi). Theriogenology, 20(1): 27-36. International Journal of Animal Reproduction, Published in the U.S.A. [Abstract]

7. J. Kumi-Diaka, T.K. Djang Fordour, V.O. Sekoni and D. Ogwu (1985). Effect of different husbandry systems on the reproductive development of post-weaning ram lambs under tropical conditions. Theriogenology, 23(4): 583-591.

8. J. Kumi-Diaka, A.A. Adesiyun, V.O. Sekoni, and C. Ezeokoli (1985). Scrotal dimensions and ejaculate characteristics of three breeds of sheep in tropical Nigeria. Theriogenology, 13(4): 671-677. [Abstract]

9. V.O. Sekoni and B.K. Gustafsson (1987). Seasonal variations in the incidence of sperm morphological abnormalities in Dairy bulls regularly used for artificial insemination. Brit. Vet. J. 143 (4):312-317. [Abstract]

10. P.I. Rekwot, A.A. Voh, E.O. Oyedipe, G.I.Opaluwa, V.O. Sekoni and P.M. Dawuda (1987). Influence of season on characteristics of the ejaculate from bulls in an artificial Insemination Centre in Nigeria. Anim. Reprod. Sci. 14: 187-194. Elsevier Science Publishers, Amsterdam, Netherlands. [Abstract]

11. V.O. Sekoni, J. Kumi-Diaka, D. I. Saror, C.O. Njoku and S.A.S. Olorunju (1988). Seasonal and monthly variations in the incidence of morphological abnormalities in bovine spermatozoa in Shika, Zaria, Northern Nigeria. Anim. Reprod. Sci. 17:61-67. Elsevier Science Publishers, Amsterdam, Netherlands. [Abstract]

12. V.O. Sekoni, J. Kumi-Diaka, D.I. Saror and C.O. Njoku (1988). The effect of Trypanosoma vivax and Trypanosoma congolense infections on the reaction time and semen characteristics in the zebu bull. Brit. Vet. J. 144: 388-394.

13. J. Kumi-Diaka, V.O. Sekoni and C.O. Njoku (1989). The effect of some haemoparasites on the reproductive performance of Zebu bulls. Vet. Res. Comm. 11(6): 475-477. Kluwer Academic Publishers: bv-Netherlands. [Abstract]

14. V.O. Sekoni, C.O. Njoku, J. Kumi-Diaka and D.I. Saror (1990). Pathological changes in male genitalia of cattle infected with Trypanosoma vivax and Trypanosoma congolense. Brit. Vet. J. 146(2): 175-180. [Abstract]

15. V.O. Sekoni, (1990). Effect of Novidium (Homidium chloride) chemotherapy on genital lesions induced by Trypanosoma vivax and Trypanosoma congolense infections in the Zebu bull. Brit. Vet. J. 146(2): 181-185. [Abstract]

16. V.O. Sekoni, D.I. Saror, C.O.Njoku, and J. Kumi-Diaka (1990). Elevation of morphological abnormalities of spermatozoa in the semen of Zebu bulls consequent to Trypanosoma vivax and Trypanosoma congolense infections. Theriogenology, 33; 925-936. [Abstract]

17. V.O. Sekoni, D.I. Saror, C.O. Njoku, J. Kumi-Diaka and G.I. Opaluwa (1990). Comparative haematological changes following Trypanosoma vivax and Trypanosoma congolense infections in the Zebu bull. Vet. Parasitology. 35; 11-19.Elsevier Science Publishers, Amsterdam, Netherlands. [Abstract]

18. V.O. Sekoni, C. Njoku, D. Saror, A. Sannusi, B. Oyejola, and J. Kumi-Diaka (1990). Effect of Chemotherapy on the elevated ejaculation time and deteriorated semen characteristics consequent to bovine trypanosomiasis. Brit. Vet. J. 146(4):368-373. [Abstract]

19. V.O. Sekoni, D, I. Saror, C.O. Njoku and J. Kumi-Diaka(1991). Effect of Novidium (Homidium chloride) chemotheraphy on elevated spermatozoa morphological abnormalities in the semen of Zebu bulls infected with Typanosoma vivax and Trypanosoma congolense. Anim. Reprod. Sci. 24; 249-258. Elsevier Science Publishers, Amsterdam, Netherlands.

20. V.O. Sekoni, A. Sannusi, M. O. I. Abatan, E. O. Oyedipe, P.I. Rekwot and L.O. Eduvie (1992). Loss of libido and terminal sterility in a Friesian bull naturally infected with Besnoitia besnoiti in Northern Nigeria: A Case Report. Theriogenology, 37 (2): 533-549. [Abstract]

21. V.O. Sekoni (1992). Effect of Trypanosoma vivax infection on semen characteristics of Yankasa Rams. Brit. Vet. J. 148(6):501-506. [Abstract]

22. V.O. Sekoni, (1993). Elevated sperm morphological abnormalities of Yankasa rams consequent to Trypanosoma vivax infection. Anim. Reprod. Sci. 3l: 243-248. Elsevier Science Publishers, Amsterdam, Netherlands. [Abstract]

23. V.O. Sekoni, (1993). Effects of severe chronic scrotal Dermatophilus congolense (Kirchi) infection on semen characteristics in Zebu/Friesian crossbred bulls and effect of long-acting terramycin chemotherapy. Theriogenology, 40(1): 211-223.

24. V.O. Sekoni, (1994). Reproductive disorders caused by animal trypanosomiases: A review. Theriogenology, 42:557-570. [Abstract]

25. K.V. Olorunshola and V.O. Sekoni (1997) Sperm morphological abnormality of 150 infertile men in Zaria. The Journal of Medical and Allied Sciences, 1(2):55-58. Published by Nig. J. for Med. And Allied Sci., NJMAS, ISSN 1595 – 2193.

26. K.V. Olorunshola and V.O. Sekoni (1997). Influence of wet fixation, staining techniques and storage time on human sperm morphology in Nigeria. Journal of Medical and Allied Sciences, 1(1):20 – 22. (Published by, Nig. J. for Medical and Allied Sciences, NJMAS).ISSN – 1595 – 2193. [Abstract]

27. K.V. Olorunshola, V.O. Sekoni, M.A. Ali, A.B. Adelaiye (1997). Influence of sexually transmissible diseases on human sperm morphology. Journal of Medical and Allied Sciences, 1(1):37-39. ( Published by Nig. J. for Med. and Allied Sciences, NJMAS) ISSN – 1595 – 2193

28. P.I. Rekwot, E.O. Oyedipe, P.M. Dawuda, V.O. Sekoni (1997). Age and hourly related changes of serum testosterone and spermiogram of prepubertal Bunaji bulls fed two levels of nutrition. Brit. Vet. J. (The Vet. J.) 153(3); 341 – 347. Bailliere Tindal, London.

29. P.I. Rekwot, E.O. Oyedipe, E. Mukasa-Mugerwa, V.O. Sekoni, O.P. Akinpelumi and A.A. Anyam (1999). Fertility in Zebu cattle (Bos indicus) after Prostaglandin administration and artificial insemination. Brit. Vet. J. (The Vet. J.)158(1): 53-58. Bailliere Tindall: London.

30. E.K. Bawa, D. Ogwu, V.O. Sekoni, E.O. Oyedipe, K.A.N. Esievo and J.E. Kambai (2000). Effects of Trypanosoma vivax on pregnancy of Yankasa sheep and the results of homidium chloride chemotherapy. Theriogenology, 54:1033-1040.

31. P.I. Rekwot, D. Ogwu, E. Oyedipe and V.O. Sekoni, (2000). Effects of bull exposure and body growth on onset of puberty in Bunaji and Friesian x Bunaji heifers. Reproduction Nutrition Development 40:359-367. INTRA, EDP Science. France. [Abstract]

32. P.I. Rekwot, D. Ogwu, V.O. Sekoni and E.O. Oyedipe (2000). Serum progesterone profiles of zebu cattle (Bos indicus) in relationship to conception and repeat breeding after artificial insemination. Anim. Reprod. Sci. 63:41-51. Elsevier Science Publishers, Amsterdam, Netherlands. [Abstract]

33. P.I. Rekwot, D. Ogwu, E. Oyedipe and V.O. Sekoni, (2001). The role of pheromones and biostimulation in animal reproduction. Anim. Reprod. Sci. 65:157-170. Elsevier Science Publishers, Amsterdam, Netherlands. [Abstract]

34. V.O. Sekoni and P.I. Rekwot (2002). Genital lesions associated with Trypanosoma vivax and Trypanosoma congolense infections in Zebu/Friesian crossbred bulls. Bull. Anim. Hlth. Prod. Afri. 50: 260-262 (African Union, Kenya).

35. V.O. Sekoni and P.I. Rekwot (2003). Effect of chemotherapy on elevated ejaculation time and deteriorated semen characteristics consequent to trypanosomosis in Zebu x Friesian crossbred bulls. Revue Elev. Med. Vet. Pays trop. 56 (1-2): 37-42. (France). [Abstract]

36. P.I. Rekwot, O.P. Akinpelumi, V.O. Sekoni, L.O. Eduvie, E.O. Oyedipe (2004). Effects of nutritional supplementation and exposure to bulls on resumption of post-partum ovarian activity in Bunaji (Bos indicus) cattle. Brit. Vet. J. (The Vet. J.) 167: 67-71. (Elsevier Ltd).

37. V.O. Sekoni, P.I. Rekwot, E.K. Bawa (2004). Effects of Trypanosoma vivax and Trypanosoma congolense infections on the reaction time and semen characteristics of Zebu (Bunaji) x Friesian crossbred bulls. Theriogenology, 61:55-62. (Elsevier Inc.).

38. V.O. Sekoni, P.I. Rekwot and E.K. Bawa (2004). The effects of trypanosomosis on sperm morphology in Zebu x Friesian crossbred bulls. Tropical Animal Health and Production, 36: 55-64. Kluwer Academic Publishers, Printed in the Netherlands.

39. S. Adamu, M.Y. Fatihu, N.M. Useh, M. Mamman, V.O. Sekoni, K.A.N. Esievo (2004). Effect of experimental Trypanosoma vivax infection on serum testosterone levels in Zebu bulls: A preliminary report. Sokoto J. of Vet. Sci., 6(1):14-17.

40. E.K. Bawa, V.O. Sekoni, S.A.S. Olorunju, K.A.N. Esievo, D.V. Uza, D. Ogwu and E. O .Oyedipe. (2005). Comparative Clinical Observations on Trypanosoma vivax infected Pregnant Yankasa and West African Dwarf Ewes. J. of Animal and Vet. Advances (JAVA). 4 (7): 630-636. Grace Publications, 2005, ISSN 1680-5593.

41. E.K. Bawa, V.O. Sekoni, D. Ogwu, K.A.N. Esievo and D.V. Uza (2005). Results of Novidium ® (Homidium Chloride) Chemotherapy on Clinical Manifestation of Trypanosoma vivax Infected Pregnant Yankasa and West African Dwarf (WAD) Ewes. J. of Animal and Vet. Advances (JAVA) 4 (7): 637-641. Grace Publications, 2005, ISSN 1680 – 5593.

42. E.K. Bawa, V.O. Sekoni, D. Ogwu, K.A.N Esievo (2005). Results of Novidium ® (Homidium Chloride) chemotherapy on the Effects of Trypanosoma vivax infection on Pregnancy and Reproduction in Yankasa and West African Dwarf (WAD) Ewes. J. of Animal and Vet. Advances (JAVA) 4(11):916-922. Grace Publications, 2005, ISSN 1680 – 5593.

43. P.I. Rekwot, V.O. Sekoni, S.P. Mallam, E.K. Bawa, Y.U. Abubakar and C.B.I. Alawa (2006). Basic principles of nuclear techniques and applications in livestock production. Nig. J. of Animal production, 33(1):128-139.

44. S. Adamu, M.Y. Fatihu, N.M. Useh, N.D.G. Ibrahim, M. Mamman, V.O. Sekoni and K.A.N. Esievo (2006). Testicular pathologic changes in relation to serum concentration of testosterone in Trypanosoma vivax infected White Fulani Bulls. J. of Animal and Vet. Advances 5(12):1165-1171, Medwell Journals 2006.

45. S. Adamu, M.Y. Fatihu, N.M. Useh, M. Mamman, V.O. Sekoni and K.A.N. Esievo (2007). Sequential testicular and epididymal damage in Zebu bulls experimentally infected with Trypanosoma vivax. Vet. Parasitology, 143:29-34, Elsevier B.V.

46. O.O. Okubanjo, I.H. Mairo, J.A. Ajanusi, D. Ogwu, V.O. Sekoni, A.J. Nok (2008). Semen sialic acid surge and modulation of α-L-fucosidase activity: possible link to loss in reproductive capacity during trypanosomiasis. Cell Biochem. and Function, 26:154-161. Copyright© John Wiley and Sons Ltd.

47. V.O. Sekoni, P.I. Rekwot, E.K. Bawa, P.P. Barje (2008). Effects of age and time of sampling on serum testosterone and spermiogram of Bunaji and N’dama bulls. Research J. of Vet. Sci., 1(1):50-55. Copyright Academic Journal Inc.

Conference/Symposium/Proceedings

48. V.O. Sekoni and B.K. Gustafsson (1980). The incidence of sperm abnormalities in dairy bulls and effects of age and season. (ABSTRACT) 9th Int. Congr. Reprod. A.I. Vol. Ill, P.284. Madrid, Spain.

49. P.I. Rekwot, E.O. Oyedipe, G.I. Opaluwa, A.A. Voh, V.O. Sekoni and P.M. Dawuda (1985). The influence of season on ejaculate characteristics of Artificial Insemination bulls. 22nd Annual Conference of the Nigeria Veterinary Medical Association at N.V.R.I., Vom, Jos, Nigeria. 6th-9th November, 1985. Published in Journal.

50. V.O. Sekoni, (1988). Effect of Novidium (Homidium chloride) chemotherapy on genital lesions induced by Trypanosoma vivax and Trypanosoma congolense infections in Zebu bulls. 5th Annual Conference, Nigerian Society for the study of Reproduction, University of Ibadan, Ibadan, 6th-8th October, 1988.

51. V.O. Sekoni, C.O. Njoku, J. Kumi-Diaka and D.I. Saror (1988). Comparative pathology of male bovine genitalia following Trypanosoma vivax and Trypanosoma congolense infections. 5th Annual Conference, Nigerian Society for the Study of Reproduction, University of Ibadan, Ibadan, Nigeria, 6th-8th October, 1988.

52. V.O. Sekoni, C.O. Njoku, D.I. Saror, J. Kumi-Diaka, A. Sannusi, and B. Oyejola (1988). Effect of Novidium (Homidium chloride) chemotherapy on elevated reaction time and deteriorated semen characteristics subsequent to Trypanosoma vivax and Trypanosoma congolense infections in the Zebu bull. 5th Annual Conference, Nigerian Society for the study of Reproduction, University of Ibadan, Ibadan, Nigeria, 6th-8th October, 1988.

53. V.O. Sekoni, J. Kumi-Diaka, D.I. Saror, C.O. Njoku and S.A.S. Olorunju (1988). Seasonal and monthly variations in the incidence of morphological abnormalities in bovine spermatozoa in Shika, Zaria, Northern Nigeria. 5th Annual Conference, Nigerian Society for the Study of Reproduction, University of Ibadan, Ibadan, Nigeria, 6th-8th October, 1988.

54. V.O. Sekoni, J. Kumi-Diaka, D.I. Saror and C.O. Njoku (1988). The effect of Trypanosoma vivax and Trypanosoma congolense infections on the reaction time and semen characteristics in the Zebu bull 5th Annual Conference, Nigerian Society for the Study of Reproduction, University of Ibadan, Ibadan, Nigeria, 6th-8th October, 1988.

55. V.O. Sekoni, (1991). A poster presentation titled “The effects of severe chronic scrotal dermatophilosis on spermatogenesis and semen characteristics in Zebu/Friesian crossbred bulls. 2nd International Symposium on Dermatophilosis, National Veterinary Research Institute, Vom, Jos, Plateau State, Nigeria. 4th-9th November, 1991.

56. V.O. Sekoni, (1991). Effects of chronic scrotal Dermatophilosis congolense infection on semen characteristics in Zebu/Friesian crossbred bulls. International Symposium on Dermatophilosis, National Veterinary Research Institute, Vom, Plateau State, Nigeria. (Full text published in Journal).

57. V.O. Sekoni. and E.O. Oyedipe (1994). Veterinary Services in Nigeria: Impact on Nigeria’s Livestock Industry. An Invited Paper presented at the 31st Annual Conference of the Nigerian Veterinary Medical Association at the Federal University of Technology, Akure, Ondo State, Nigeria 25th – 28th October, 1991. (17 Pages).

58. Bawa, E.K., Uza, D.V. Sannusi, A.A. Agbede; R.I.S; Oyedipe, E.O.; Eduvie, L.O. and Sekoni, V.O. (1994). Evaluation of antibody detection Enzyme-linked immunosorbent assay (Ab’ELISA) for serodiagnosis of cattle trypanosomiasis in Nigeria. 19th Annual Conference of Nigerian Society for Animal Production. University of Benin, 20th-26th March,

59. V.O. Sekoni and E. O. Oyedipe (1995). Embryo transfer technology and its possible application to the Nigerian livestock industry. In: Proceedings of symposium on chemistry and biotechnology for National Development. Edit. G.B. Ogunmola and A. Garba, ISBN 978-34613-1-1, ISSN: 1119-1635, pp66-72 Sheda Science and Technology complex, Abuja, Nigeria, Aug. 16th – 18th 1995 (Opening Ceremony).

60. E.K. Bawa, D. Ogwu, K.A.N. Esievo, E.O. Oyedipe, V.O. Sekoni, and A. Sannusi. (1995). The efficacy of NovidiumR (Homidium Chloride) chemotherapy on Trypanosoma vivax infection in pregnant ewes (I. Effect of foetal development and gestation). 32nd Annual Congress, Nig. Vet. Med. Assoc. N.V.R.I., Vom, Jos, Plateau State, 23rd-28th October, 1995.

61. Bawa, E.K., Ogwu, D., Esievo, K.A.N., Oyedipe, E.O., Sekoni, V.O., and Sannusi, A. (1995). Effects of Trypanosoma vivax infection on pregnancy in Yankasa ewes: Efficacy of Novidium (Homidium chloride) chemotheraphy on foetal development, gestation, and delivery in T. vivax infected pregnant ewes. 32nd Annual Congress of the Nigerian Vet. Med. Association, Vom, Plateau State, 23nd – 28nd Oct. 1995.

62. E.K. Bawa, D.I. Ogwu, K.A.N. Esievo, E.O. Oyedipe, V.O. Sekoni, A. Sannusi and J.E. Kambai (1998). Effects of Trypanosoma vivax infection on early, middle and late stages of pregnancy in Yankasa ewes and the effects of Novidium® chemotherapy. Proceedings of the Silver Anniversary Conference of the Nigerian Society for Animal Production (NSAP) and Inaugural Conference of the West African Society for Animal Production (WASAP). Paper No. 34, pp 67-68. Gateway Hotel, Abeokuta, Nigeria, March 21st -26th, 1998.

63. P.D. Halle, D. Ogwu, V.O. Sekoni and L.B. Tekdek (1998). Effect of suckling on the Postpartum Anestrus Period in Zebu Cows indigenous to Nigeria, Proceedings: Silver Anniversary Conference of NSAP/WASAP Inaugural Conference, Paper No. 247, pp 490 – 491. Gateway Hotel, Abeokuta, Nigeria March 21st – 26th, 1998.

64. P.D. Halle, D. Ogwu, V.O. Sekoni and L.B. Tekdek (1998). Reproductive performance of Nigerian Zebu cows during the postpartum period: Influence of parity and season. Proceedings: Silver Anniversary Conference of NSAP/WASAP Inaugural Conference, paper No. 249, pp 494 -495, Gateway Hotel, Abeokuta, Nigeria, March 21st -26th, 1998.

65. O.P. Akinpelumi, L.O. Eduvie, H. Adebisi, V.O. Sekoni and E.O. Oyedipe (1998). Influence of bull exposure on postpartum anoestrus interval in suckled Bunaji cows. Proceedings: Silver Anniversary Conference of NSAP/WASAP Inaugural Conference Paper No. 320, pp 634 – 635. Gateway Hotel, Abeokuta, Nigeria, March 21st -26th, 1998.

66. K.V. Olorunshola, V.O. Sekoni and A.B. Adelaiye (2000). Seasonal and monthly variations in the incidence of morphological abnormalities in human spermatozoa in Zaria, Northern Nigeria. Nigerian Journal of Physiological Sciences 16 (1-2): 56. Cited Abstract by Exerpta Medica, Chamica Abstracts.

67. L.O. Eduvie, P.P. Barje, E.K. Bawa, O.W. Ehoche, H.J. Makun, V.O. Sekoni, P.I. Rekwot (2002) Development and field evaluation of animal feed supplementation packages [Evaluation of forage legume Lablab purpureus as a supplement for lactating Bunaji cows]. IAEA-TECDOC-1294. Proceedings of final review meeting of an IAEA Techn. Co-operation Regional AFRA Project organized by the Joint FAO/IAEA Division of Nuclear Techniques in food and Agric. Cairo Egypt 25-29 November, 2000. (PP: 103-107).

68. P.I. Rekwot, O.P. Akinpelumi, V.O. Sekoni, L.O. Eduvie, E.O. Oyedipe and Y.U. Abubakar (2001).Onset of puberty in Bunaji (Bos indicus) heifers raised on farm and on-station management conditions. Paper presented at the 38 Annual Congress of the Nigerian Veterinary Medical Association held at the Administrative Staff College of Nigeria (ASCON), Topo, Badagry, and Lagos State, Nigeria from the 9-13 October 2001.

69. V.O. Sekoni; P.I. Rekwot, P.O. Akinpelumi, L.O. Eduvie, E.O. Oyedipe (2001). Effects of nutritional supplementation and exposure to bulls on resumption of postpartum ovarian activity in Bunaji (Bos indicus) cattle. Paper presented at the 38 Annual Congress of the Nigerian Veterinary Medical Association held at the Administrative Staff College of Nigeria (ASCON), Topo, Badagry, Lagos State, Nigeria from the 9- 13 October 2001(Published as journal).

70. E.K. Bawa, D. Ogwu, V.O. Sekoni, L.O. Eduvie, E.O. Oyedipe, K.A.N. Esievo, J.E. Kambai (2001). Comparative studies on the effects of Trypanosoma vivax infection on pregnant Yankasa and West African Dwarf (WAD) ewes and the results of Novidium (Homidium chloride) chemotherapy. Book of Abstracts for the 38th Annual Congress of the NIGERIAN VET. MED. ASSOCIATION, Page 12. Venue: Administrative Staff college of Nigeria (ASCON) Topo, Badagry, Lagos State.9th – 13th, October, 2001.

71. V.O. Sekoni and P.I. Rekwot (2002). Genital lesions associated with Trypanosoma vivax and Trypanosoma congolense infections in Zebu/Friesian crossbred bulls. Paper presented at the 39th Annual Congress of the Nigerian Veterinary Medical Association held at the Gingiya Hotel, Sokoto, Sokoto State, Nigeria from the 27-31 October, 2002 (Published as Journal).

72. K.V. Olorunshola and V.O. Sekoni, (2003). Necrospermia and immotile spermatozoa in healthy human population. Physiological Society of Nigeria, xxiiird Annual Scientific Conference pp: 6-7. Old Great Hall, College of Medicine, University of Lagos, Idi-Araba, Lagos.

73. P.I. Rekwot, O.P. Akinpelumi, V.O. Sekoni, L.O. Eduvie, E.O. Oyedipe and Y.U. Abubakar (2004). Onset Of Puberty in Bunaji (Bos indicus) heifers raised under on-farm and on-station management systems. Proceeding of the Nig. Vet. Med. Assoc. 38th Annual Congress 9th – 13th October, 2004. Held at Badagry, Lagos State, Nigeria.

74. P.I. Rekwot, V.O. Sekoni, Y.U. Abubakar, A.A. Anyam, J.D. Jatau and S. Magaji (2005). Semen characteristics of Rhode Island Red Breeder Cocks. BOOK OF ABSTRACT pp. 36(13) 42nd Annual Congress, Nig. Vet. Med. Assoc. 14th – 18th Nov. University of Maiduguri, Borno State, Nigeria.

75. Sekoni, V.O., Rekwot, P.I., Anyam, A.A., Bawa, E.K., Barje, P.P, Alawa, C.B.I, Adamu, A.M. (2005) Effect of age and time of sampling on serum testosterone and spermiogram of adult Bunaji and Ndama Bulls. BOOK OF ABBSTRACTS pp. 40 (22). 42nd Annual Congress, Nig. Vet. Med. Assoc. 14th -18th Nov, University of Maiduguri, Borno State, Nigeria.

76. Bawa, E.K., Esievo, K.A.N., D. Ogwu, E.O. Oyedipe and Sekoni, V.O. (2005). Effects of Novidium ® (Homidium Chloride) chemotherapy on “lesions induced by Trypanosoma vivax infected pregnant Yankasa (YK) and West African Dwarf (WAD) Ewes in the first and second trimesters of pregnancy. BOOK OF ABSTRACTS pp. 45 (09) 42nd Annual Congress, Nig. Vet. Med. Assoc. 14th -18th Nov, University of Maiduguri, Borno State, Nigeria.
Seminar Papers

77. V.O. Sekoni, (1980). The incidence of sperm abnormalities in bulls regularly used in Artificial Insemination. N.A.P.R.I., Seminar, Ahmadu Bello University, Zaria, Vol. 2:35-54.

78. V.O. Sekoni, (1981). A comparative study of incidence of morphological abnormalities in the semen of beef and dairy bulls. N.A.P.R.I., Seminar, Ahmadu Bello University, Zaria. Vol. 3:68-74.

79. V.O. Sekoni, (1981). Effects of preparation, fixation in buffered formal saline, storage at 4°C and staining techniques on sperm morphology and percentage of live and dead spermatozoa. N.A.P.R.I., Seminar, Ahmadu Bello University, Zaria, Vol. 1:101-116.

80. V.O. Sekoni, (1982). Terminal sterility in a Friesian bull naturally infected with chronic scrotal cutaneous strephtothricosis (Kirchi). Faculty of Veterinary Medicine, Seminar. Ahmadu Bello University, Zaria. (Has been published in Journal).

81. V.O. Sekoni, (1985). Seasonal and monthly variations in the incidence of morphological abnormalities in bovine spermatozoa in Shika, Zaria, Northern Nigeria. Faculty of Veterinary Medicine, Seminar, Ahmadu Bello University, Zaria. (Has been published in Journal).

82. V.O. Sekoni, (1986). The effect of Trypanosoma vivax and Trypanosoma congolense infections on the reaction time and semen characteristics in the bovine. Faculty of Veterinary Medicine, Seminar, Ahmadu Bello University, Zaria. (Has been published in Journal).

83. V.O. Sekoni, (2006) Reproductive disorder caused by animal trypanosomiasis: An Update. Faculty of Veterinary Medicine, Seminar, University of Maiduguri, Borno State, Nigeria, August 2006.
Book Edited

84. L.O. Eduvie, V.O. Sekoni, A.A. Voh, (Jr), J.O. Bale, and A.G. Jagun (1990). Application of Animal Reproduction and Artificial Insemination Techniques to Livestock Production in Nigeria. Published by the Livestock Research Extensions Unit, N.A.P.R.I., Ahmadu Bello University, Shika, Zaria. Nigeria. (282 Pages).
Workshop/Lectures/Contribution to Books

85. V.O. Sekoni, (1990). Male reproductive functions and semen characteristics in livestock. Lecture presented at the Workshop on the Application of Animal Reproduction and Artificial Insemination Techniques to Livestock Production in Nigeria, May 27 – June 2, 1990 at N.A.P.R.I., Shika, A.B.U., Zaria, Nigeria. In Book edited by: L.O. Eduvie, V.O. Sekoni, A.A. Voh (Jr.), J.O. Bale and A.G. Jagun (1990). pp. 35-48.

86. V.O. Sekoni, (1990). Semen processing and preservation techniques in livestock. Lecture presented at the Workshop on the Application of Animal Reproduction and Artificial Insemination Techniques to Livestock Production in Nigeria, May 27th – June 2nd, 1990 at N.A.P.R.I., Shika, A.B.U., Zaria, Nigeria. In Book edited by L.O. Eduvie, V.O. Sekoni, A.A. Voh (Jr.) J.O. Bale and A.G. Jagun (1990), pp. 49-63.

87. C. O. Njoku, D. Ogwu and V.O. Sekoni (1990). Pathology of infectious pregnancy wastage, and infertility/sterility in ruminants. Lecture presented at the Workshop on the Application of Animal Reproduction and Artificial Insemination Techniques to Livestock Production in Nigeria, May 27th-June 2nd, 1990 at N.A.P.RI., Shika, A.B.U., Zaria, Nigeria. In Book edited by L.O. Eduvie, V.O. Sekoni, A. A. Voh (Jr.), J.O. Bale and A.G. Jagun (1990), pp. 205-220.

88. V.O. Sekoni, (1991). Animal trypanosomiases and reproductive disorders. Paper presented at a Symposium in N.A.P.R.I., Shika, A.B.U., Zaria during the send forth ceremony in honour of Prof. Saka Nuru, first Director of N.A.P.R.I. who retired from NAPRI/ABU service.
89. V.O. Sekoni, (1993). Application of Animal Reproduction Scientific Knowledge for Livestock Production. Paper presented at the first Joint FACU/NAPRI, Training Workshop on Advanced Animal Husbandry Practices for Subject Matter” Specialists in the Agric. Development Projects (ADPs) at N.A.E.R.L.S., Ahmadu Bello University, Zaria, Nigeria, 13th-18th December, 1993.

90. L. O. Eduvie, Bawa, E. K., Dawuda, P. M., Oyedipe, E. O., Olorunju, S.A.S., Bale, J.O. and Sekoni, V.O., (1993). Factors affecting the reproductive performance of Bunaji cattle under different pastoral management systems in the Guinea Savanna Zone of Nigeria. In: Improving the productivity of indigenous African livestock (Results of FAO/IAEA/DGIS Coordinated Research Programmes organised by the joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, IAEA- TECDOC-708: 31-38 IAEA, Vienna, June, 1993, ISSN 1011-4289).

91. V.O. Sekoni and P. I. Rekwot (1997). Infertility in farm animals. Paper presented to Artificial Insemination Trainees at NAPRI, Ahmadu Bello University, Shika-Zaria, Nigeria, September 18, 1997.

92. V.O. Sekoni and P.I. Rekwot (1997). Some current technologies in Animal Reproduction. Paper presented to Artificial Insemination Trainees at NAPRI, Ahmadu Bello University, Shika, Zaria, Nigeria, Oct. 10, 1997.

Last Updated on March 21, 2012 by admin

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