1. Aboe P.A., Boa-Amponsem, K., Okantah, S.A., Butler, E.A., Dorward, P.T. and Bryant, M.J., 2006. Free-range village chickens on the Accra Plains, Ghana: their husbandry and productivity, Trop Anim Health Prod, 38, 235–248.
2. Ahunu B.K., Arthur, P.F., Danbaro, G. and Aboagye, G.S., 1993. Preweaning growth performance of west African shorthorn cattle and their Jersey crossbreds in Ghana, Trop Anim Health Prod 25, 33–40.
3. Almeida, A.M. and Cordeiro, J.M., 1999. Trypanotolerant cattle of West and Central Africa. In Vaz Portugal A., Pires da Costa, J., Mira, J.F. and Cortes-Martins, L. (eds), Proceedings of the 7th Congress of the Mediterranean Federation for Health and Production of Ruminants, Santarém 1999, 345–350.
4. Brito, B.R., 2006. Estudo Socioeconómico e diagnóstico para acompanhamento das condições de bem-estar das famílias da região de Cacheu, (Instituto do Marquês de Valle-Flôr Lisbon, Portugal).
5. de Jode, A., Reynolds, L. and Matthewman, R.W., 1992. Cattle production systems in the derived Savannah and southern Guinea Savannah regions of Oyo State, southern Nigeria, Trop Anim Health Prod 24, 90–96.