Adedeji T.A. (2009). Pleiotropic effects of coat colour and wattle genes on the adaptive potentials of West African Dwarf goats. Ph.D Thesis. University of Agriculture, Abeokuta, Nigeria.
Adejuwon J.O. (1983). Soil Atrophic of Oyo state of Nigeria. Heinemann Nigeria Publ., Ibadan.
Casu S., Boyazoglu J.G. and Lauvergne J.J. (1970). The Inheritance of wattles in the Sardinian breed of sheep. Anal. Genet. Sel. Anim. 2, 249-261.
Kafi M., Safdarian M. and Hashemi M. (2004). Seasonal variation in semen characteristics, scrotal circumference and libido of Persian Karakul rams. Small Rumin. Res. 53,133-139.
Katongole J.B.D., Sebolai B. and Madimabe M.J. (1996). Morphological characterization of the Tswana goat. In: Small ruminant research and development in Africa. S.H.B. Lebbie and E.Kagwini. Pp. 5-9 in Proc. 3rd Biennial Conference of the African Small Ruminant Research Network. UICC, Kampla, Uganda.
Keeton L.L., Green R.D., Golden B.L. and AndersonK.J. (1996). Estimation of variance components and prediction of breeding values for scrotal circumference and weaning weight in Limousin cattle. J. Anim. Sci. 74, 31-36.
Odubote I.K. (1994). Influence of qualitative traits on the performance of West African Dwarf goats. Nigerian J. Anim. Prod. 21, 25-28.
Oguntoyinbo J.S. (1988). Climate. Pp. 78 inGeography of Nigeria Development. J.S. Oguntoyinbo and M. Filani, Eds. Heinemann Nigeria Ltd, Ibadan.
Osinowo O.A., Buvanendram V. and Koning N.L. (1988). A study of coat type, pigmentation and wattle incidence in Yankasa sheep and their effects on fertility and weaning weight. In Proc. 13th Annual Conference of the Nigerian. Soc. Anim.Prod. University of Calabar, Nigeria.
Osinowo O.A., Molokwu E.C.I. and Osori D.I.K. (1981). Growth and testicular development in Bunaji bulls. J. Anim. Prod. Res. 1, 55-67.
Osinowo O.A., Buvanendran V. and Koining M.L. (1990). The Occurrence and inheritance of Wattles in Yankasa sheep. Nigerian. J. Anim. Prod. 17(1/2), 63-64.
Ozoje M.O. (2002). Incidence and relative effects of qualitative traits in West African Dwarf goats. Small Rumin. Res. 43, 97-100.
Ozoje M.O. and Mgbere O.O. (2002). Coat pigmentation effects in West Africa Dwarf goats: Live weights and body dimensions.Nigerian. J. Anim. Prod. 29(1), 5-10.
Palasz A.T., Cates W.F., Barth A.B. and Mapletoft R.J. (1994). The relationship between scrotal circumference and quantitative testicular traits in yearling beef bulls. Theriogenology. 42, 715-726.
Peter J.C. and Lesile B. (1980). Current therapy. Pp. 330-335, in: Theriognelogy. W.B. Morrow and Co. Saunders. Eds. Philadelphia.
Robert A.V. (1994). Raising Healthy Goats under Primitive Conditions, Overview of General Information, Pp. 12-18. Christian Veterinary Mission, Washington, U.S.A.
SAS. (2003). Statistical Analysis System. SAS stat. Version 9. SAS institute Inc. Gary NC U.S.A.
Shongjia L., Xiangmo L., Gangyl X. and Shenov C. (1992). Relationship between physical traits, litter size and milk yield in Saanen, Guanzhong and Crossbred goats. Pp. 83 in Proc. 5th Int. Conf. Goats. New Delhi.