Sperm Production Rate, Gonadal and Extragonadal Sperm Reserves in the Sokoto Red (Maradi) Buck in a Tropical Environment
28 healthy adult Maradi bucks were used to evaluate
sperm production and sperm storage capacity in the breed. Daily
sperm production (DSP) averaged 0.55±0.05x109, while the daily
sperm production/g (DSP/g) was 1.37±0.12 x107. Gonadal sperm
reserve was 1.99±0.18 x109, while the caput, upper corpus and lower
corpus averaged 0.58±0.04 x109, 0.36±0.02 x109 and 0.33±0.08 x109
respectively. The proximal cauda, mid cauda, distal cauda and ductus
deferens had values of 0.68±0.10 x109, 1.23±0.16 x109,1.87±0.
x109and 0.17±0.05 x109 respectively. The relative contributions of
the respective epididymal sections and ductus deferens to the total
extragonadal sperm reserves were, 11.11%, 6.89%, 6.32%, 13.03%,
23.56%, 35.82% and 3.26% respectively. Gonadal sperm reserves
were significantly higher (p<0.05) than caput reserves, upper corpus
reserves, lower corpus reserves, proximal cauda reserves and ductus
deferens reserves. Gonadal reserves were however similar (p>0.05) to
mid cauda and distal cauda epididymal reserves.
[1] Gall C. H. Stier C. H. and Younan, M.,"Small ruminants in developing
countries". Target for biotechnology symp. Of potentials and limitations
of Biotech for Livestock Breeding and Production in Developing
Countries. Merlense Germany, 1992, 119-130.
[2] Leboeuf, B., Manfredi, E.; Boue, P.; Piacere, A.; Brice, G.; Baril, G.;
Broqua, C.; Humblot, P. and Terqui, M. "Artificial insemination of
dairy goats in France". Livestock Prod. Sci., 1998 55 (3) 193-203.
[3] Bitto,I.I.and Egbunike,G.N. "Effects of season and acute heat stress on
the ejaculate characteristics of the West African Dwarf (WAD) buck".
Trop.J.Anim.Sci. 2005, 8(2):11.
[4] Bitto, I.I. and G.N. Egbunike: "Seasonal Variations in the Morphometric
Characteristics of the Pubertal West African Dwarf Buck in its Native
Tropical Environment". Int.J. Morphol., 2006a, 24(4):637-642.
[5] Bitto, I.I. and Egbunike, G.N. "Seasonal variations in sperm production,
gonadal and extragonadal sperm reserves in pubertal West African
Dwarf Bucks in their native tropical environment". Livestock Res. For
Rural Dev. 2006b 18 (9) (Sept.2006) Article#134. Retrieved November
26, 2006 from http://www.cipav.org.co/Irrd/Irrd18/9bitt18134.htm.
[6] Bitto, I.I. and G.N. Egbunike (2007). "Some Biochemical characteristics
of spermatozoa and seminal plasma of pubertal West African Dwarf
bucks in their native humid topical environment". J .Anim. and Vet.
Advances., 2007, 6 (12)1390-1394.
[7] Bitto, I.I. and Egbunike, G.N. and Akusu, M.O. "The Effect of Season
on the Histometric characteristics of the Pubertal West African Dwarf
buck in its native environment". Int.J. Morphol., 2008 26 (2) 397-401
[8] Bitto, I.I. and Egbunike, G.N. "Seasonal variations in testicular cellular
elements and the seminiferous epithelial cycle in pubertal cycle in
pubertal West African Dwarf Bucks". In Proc. 3rd International
Conference on Sustainable Animal Agriculture for Developing countries
(SAADC 2011) July 26-29, 2011 Nakhon Ratchasima, Thailand., Pp446,
Vol. 2 (Abstracts).
[9] Bitto, I.I. and Egbunike, G.N. "The Semen Characteristics of Pubertal
West African Dwarf Bucks". Pertanika J. Trop. Agric. Sci. 2012, 35
(2): 191 - 197
[10] Carew, B.A. and Egbunike, G.N. "Sperm production rates in Maradi
goats extensively managed in a tropical environment". Proc.9th Int.
Congr. On Anim. Reprod. And A.I. Madrid .Vol.V. , 1980, 608-611.
[11] Ogwuegbu, S.O.; Oke, B.O.; Akusu, M.O. "Gonadal and extragonadal
sperm reserves of Maradi (Red Sokoto) goat". Bull. Anim. Hlth. Prod.
Afr., 1985, 33: 139-141.
[12] Bitto, I.I. and Aroh,V. "Testicular morphometry and some biochemical
characteristics of testicular spermatozoa and fluid in Red Sokoto
(Maradi) bucks". Global J. Agric. Sci., 2006, 5 (1): 67-70.
[13] Amann, R.P. and Almquist, J.O. "Reproductive capacity of Dairy bulls
VIII . Direct and indirect measurement of testicular sperm production".
J. Dairy Sci. 1962, 45,774-781.
[14] Steel, R.G.D and Torrie J.O. " Principles and Procedures of Statistics".
Mc Grew-Hill Book Co. Inc. New York. 1980.
[15] Thimonier, J.; Terqui, M. and Chemineau, P. ÔÇÿ Conduite de la
reproduction de petits ruminants dans les differentes parties du monde-.
Proc. Int. Atomic Energy Agency. Vienna., 1986, Pp. 135 - 147.
[1] Gall C. H. Stier C. H. and Younan, M.,"Small ruminants in developing
countries". Target for biotechnology symp. Of potentials and limitations
of Biotech for Livestock Breeding and Production in Developing
Countries. Merlense Germany, 1992, 119-130.
[2] Leboeuf, B., Manfredi, E.; Boue, P.; Piacere, A.; Brice, G.; Baril, G.;
Broqua, C.; Humblot, P. and Terqui, M. "Artificial insemination of
dairy goats in France". Livestock Prod. Sci., 1998 55 (3) 193-203.
[3] Bitto,I.I.and Egbunike,G.N. "Effects of season and acute heat stress on
the ejaculate characteristics of the West African Dwarf (WAD) buck".
Trop.J.Anim.Sci. 2005, 8(2):11.
[4] Bitto, I.I. and G.N. Egbunike: "Seasonal Variations in the Morphometric
Characteristics of the Pubertal West African Dwarf Buck in its Native
Tropical Environment". Int.J. Morphol., 2006a, 24(4):637-642.
[5] Bitto, I.I. and Egbunike, G.N. "Seasonal variations in sperm production,
gonadal and extragonadal sperm reserves in pubertal West African
Dwarf Bucks in their native tropical environment". Livestock Res. For
Rural Dev. 2006b 18 (9) (Sept.2006) Article#134. Retrieved November
26, 2006 from http://www.cipav.org.co/Irrd/Irrd18/9bitt18134.htm.
[6] Bitto, I.I. and G.N. Egbunike (2007). "Some Biochemical characteristics
of spermatozoa and seminal plasma of pubertal West African Dwarf
bucks in their native humid topical environment". J .Anim. and Vet.
Advances., 2007, 6 (12)1390-1394.
[7] Bitto, I.I. and Egbunike, G.N. and Akusu, M.O. "The Effect of Season
on the Histometric characteristics of the Pubertal West African Dwarf
buck in its native environment". Int.J. Morphol., 2008 26 (2) 397-401
[8] Bitto, I.I. and Egbunike, G.N. "Seasonal variations in testicular cellular
elements and the seminiferous epithelial cycle in pubertal cycle in
pubertal West African Dwarf Bucks". In Proc. 3rd International
Conference on Sustainable Animal Agriculture for Developing countries
(SAADC 2011) July 26-29, 2011 Nakhon Ratchasima, Thailand., Pp446,
Vol. 2 (Abstracts).
[9] Bitto, I.I. and Egbunike, G.N. "The Semen Characteristics of Pubertal
West African Dwarf Bucks". Pertanika J. Trop. Agric. Sci. 2012, 35
(2): 191 - 197
[10] Carew, B.A. and Egbunike, G.N. "Sperm production rates in Maradi
goats extensively managed in a tropical environment". Proc.9th Int.
Congr. On Anim. Reprod. And A.I. Madrid .Vol.V. , 1980, 608-611.
[11] Ogwuegbu, S.O.; Oke, B.O.; Akusu, M.O. "Gonadal and extragonadal
sperm reserves of Maradi (Red Sokoto) goat". Bull. Anim. Hlth. Prod.
Afr., 1985, 33: 139-141.
[12] Bitto, I.I. and Aroh,V. "Testicular morphometry and some biochemical
characteristics of testicular spermatozoa and fluid in Red Sokoto
(Maradi) bucks". Global J. Agric. Sci., 2006, 5 (1): 67-70.
[13] Amann, R.P. and Almquist, J.O. "Reproductive capacity of Dairy bulls
VIII . Direct and indirect measurement of testicular sperm production".
J. Dairy Sci. 1962, 45,774-781.
[14] Steel, R.G.D and Torrie J.O. " Principles and Procedures of Statistics".
Mc Grew-Hill Book Co. Inc. New York. 1980.
[15] Thimonier, J.; Terqui, M. and Chemineau, P. ÔÇÿ Conduite de la
reproduction de petits ruminants dans les differentes parties du monde-.
Proc. Int. Atomic Energy Agency. Vienna., 1986, Pp. 135 - 147.
@article{"International Journal of Biological, Life and Agricultural Sciences:59278", author = "Immanuel I. Bitto and Thomas Agam", title = "Sperm Production Rate, Gonadal and Extragonadal Sperm Reserves in the Sokoto Red (Maradi) Buck in a Tropical Environment", abstract = "28 healthy adult Maradi bucks were used to evaluate
sperm production and sperm storage capacity in the breed. Daily
sperm production (DSP) averaged 0.55±0.05x109, while the daily
sperm production/g (DSP/g) was 1.37±0.12 x107. Gonadal sperm
reserve was 1.99±0.18 x109, while the caput, upper corpus and lower
corpus averaged 0.58±0.04 x109, 0.36±0.02 x109 and 0.33±0.08 x109
respectively. The proximal cauda, mid cauda, distal cauda and ductus
deferens had values of 0.68±0.10 x109, 1.23±0.16 x109,1.87±0.
x109and 0.17±0.05 x109 respectively. The relative contributions of
the respective epididymal sections and ductus deferens to the total
extragonadal sperm reserves were, 11.11%, 6.89%, 6.32%, 13.03%,
23.56%, 35.82% and 3.26% respectively. Gonadal sperm reserves
were significantly higher (p0.05) to
mid cauda and distal cauda epididymal reserves.", keywords = "Goats, Reserves, Sperm, Tropics", volume = "6", number = "7", pages = "512-3", }
