Nathaniel WANMI, Esther KIGIR, Michael SAMUEL


This study was carried out to investigate the developmental morphometry of the whole body and brain weights of wild grey breasted helmeted guinea fowl in Nigeria. Domestication of this species of bird is in the increase but information on the development of the body and brain, and how it relates to the neurobiology of this bird is scanty, thus the need for this study. The mean weights of the whole embryo and brain of wild helmeted guinea fowl on day 4 of incubation were 0.040 ± 0.0021 g and 0.010 ± 0.004 g. On day 13, 23 and 28, their mean body weights were 1.951 ± 0.08 g, 12.592 ± 1.305 g and 18.687 ± 1.647 g, respectively. At post-hatch, the mean weights of the brain and whole body of helmeted guinea fowl keets at day 1 was 20.353 ± 1.1946 g. At days 10, 37 and 55, the mean weights were 30.089 ± 2.4275 g, 109.062 ± 4.5119 g and 244.401 ± 26.2049 g, respectively. Developmentally, on day 4 of incubation, embryo begins to for and brain weights increases with increase in body weight. The mean weight of the keet of helmeted guinea fowl was established at 20.353 ± 1.1946 g. Breeders can use this as a standard to ascertain the growth performance of keets.


Morphometry, Body weight, Brain weight, Guinea fowl, Numida meleagris galeata

Full Text:



AKAR, S. and SUR, E. (2010). The development of chicken cerebellar cortex and the determination of AgNOR activity of the Purkinje cell nuclei. Belgian Journal of Zoology, 140(2): 214 – 222.

AYENI, J. S. (1983). The biology and utilization of helmeted guinea fowl (Numida meleagris galeata Pallas) in Nigeria. II, Food of helmeted guinea fowl in Kainji Lake basin area of Nigeria. Tropical Agriculture of Ecology, 21(1): 1 – 10.

AYORINDE, K. L. (1987). Characteristics and Genetic Improvement of the Grey Breasted Helmeted Guinea Fowl, Numida meleagris galeata Pallas in for Growth and Meat Production. Ph.D. Thesis, University of Ibadan, Nigeria.

BARUWA, O. I. and SOFOLUWE, N. A. (2016). Profitability and resource use efficiency of guinea fowl (Numida meleagris) production under tropical conditions. Journal of Livestock Science, 7: 97 – 106.

CACTUS, R. (2001). Guinea fowl assortment. Available in:

FAJEMILEHIN, S. O. K. (2010). Morphostructural characteristics of three varieties of grey breasted helmeted guinea fowl in Nigeria. International Journal of Morphology, 28(2): 557 – 562.

GOSOMJI, I. J. (2014). Morphogenesis of the Gastrointestinal Tract of the Helmeted Guinea Fowl (Numida meleagris galeata). M.Sc. Thesis, Ahmadu Bello University, Zaria.

GUÈYE, E. F. (2000). The role of family poultry in poverty alleviation, food security and the promotion of gender equality in rural Africa. Outlook on Agriculture, 29(2): 129 – 136.

HALLONET, M. E., TEILLET, M. A. and LE DOUARIN, N. M. (1990). A new approach to the development of the cerebellum provided by the quail-chick marker system. Development, 108(1): 19 – 31.

IGADO, O. O. and AINA, O. O. (2010). Some aspect of the neurometrics and oculometrics of the Japanese quail (Coturnix coturnix japonica) in Nigeria. Journal of Morphological Science, 27(3-4): 133 – 135.

ISSAKA, B. Y. and YEBOAH, R. N. (2016). Socio-economic attributes of guinea fowl production in two districts in Northern Ghana. African Journal of Agricultural Research, 11(14): 1209 – 1217.

JOYNER, A. L. (2002). Establishment of anterior-posterior and dorsal-ventral pattern in the early central nervous system. Pages 107 – 126. In: ROSSANT, J. and TAM, P. P. L. (Eds.), Mouse Development. Academic Press, San Diego.

MEDINA, F. S., HUNT, G. R., GRAY, R. D., WILD, J. M. and KUBKE, M. F. (2013). Perineuronal satellite neuroglia in the telencephalon of New Caledonian crows and other Passeriformes: evidence of satellite glial cells in the central nervous system of healthy birds? Peer Journal, 1: p.e110. peerj.110

NOBO, G., MOREKI, J. C. and NSOSO, S. J. (2012). Feed intake, body weight, average daily gain, feed conversion, ratio and carcass characteristic of helmeted guinea fowl fed varying levels of phane meal (Imbrasia belina) as replacement of fishmeal under intensive system. International Journal of Poultry Science, 11(6): 378 – 384.

NORTHCUTT, R. G. (2001). Changing views of brain evolution. Brain Research Bulletin, 55(6): 663 – 674.

PORTMAN, A. and STINGELIN, W. (1960). The central nervous system. In: MARSHALL, A. J. (Ed.). The Comparative Biology of Birds. Academic Press, New York.

SALAMI, S. O. (2009). Studies on the Onset of Osteogenesis in Grey Breasted Guinea Fowl (Numida Meleagris galeata). Ph.D. Thesis, Ahmadu Bello University, Zaria, Nigeria.

WANMI, N., ONYEANUSI, B. I., NZALAK, J. O. and ALUWONG, T. (2016). Structural organization of the optic lobe of the grey breasted helmeted guinea fowl (Numida meleagris galeata) at pre-hatch study. Journal of Biology and Life Science, 7(2): 26 – 40.


  • There are currently no refbacks.

A Publication of Department of Zoology and Environmental Biology, University of Nigeria, Nsukka, Enugu State, Nigeria.