Journal of Applied Sciences1812-56541812-5662Asian Network for Scientific Information10.3923/jas.2019.818.826HamiduJ.A. JerebiD.A. OkaiM.A. WakpalD. KonaduL.A. 82019198Background and Objective: An experiment was conducted to analyze mating behaviors of layer breeders, time of egg collection and general handling of eggs, days of egg storage and incubation control mechanisms and records of hatchability and chick quality indicators. The study was conducted at the Olympio hatchery, Department of Animal Science, Kwame Nkrumah University of Science and Technology (KNUST), Kumasi, Ghana. Materials and Methods: Four consecutive hatching regimes (from breeding flock through to the hatchery) were observed and monitored. Eggs collected were stored in the cold room at a temperature of 16°C and RH of 70% and pre-warmed for about 6 h interval before setting them in an incubator. Hatchability at the end of incubation was assessed and breakout of hatch debris was done for each regime to measure the impact of incubation parameters on embryo and content of residue left after 21.5 days of incubation. Results: Average mating within 3 h of observation between 05:00-08:00 GMT was between 47-50 times. Pen house temperature and egg room temperature which were 27-32°C were high and above physiological zero especially in the afternoons. When eggs were incubated the eggshell temperature (EST) fluctuated between the time of the day. The EST increased steadily at all times of the day from E11-E17 as the experiment progressed due to the increase in metabolic activity of the growing embryo. The incubator air temperature was not the same as EST. Conclusion: The study showed that long storage of eggs beyond 7 days increased early embryonic mortality.]]>Sumberg, J. and J. Thompson,20132013USDA.,20132013Djang-Fordjour, H., J.A. Hamidu and K. Adomako,2017316Yeboah, P., J.A. Hamidu and K. Adomako,20162016pp: 583Mroz, E., A. Orlowska and M. Stepinska,201025143153Hawken, R.,20132013Cobb Ventress Inc.,20082008Noiva, R.M., A.C. Menezes and M.C. Peleteiro,20142014Ghana Meteorological Agency,20072007Tullett, S.,20092009Hamidu, J.A., G.M. Fasenko, J.J.R. Feddes, E.E. O'Dea, C.A. Ouellette, M.J. Wineland and V.L. Christensen,20078624202432Zahir Uddin and J.A. Hamidu,20141973977Funk, E.M. and H.V. Biellier,1944Gallus domesticus).]]>23538540Edwards, C.L.,1902Gallus domesticus.]]>6351397Hamidu, J.A., A.M. Rieger, G.M. Fasenko and D.R. Barreda,201089901909Hamidu, J.A., G.M. Fasenko, L. Guan, D.R. Barreda and J.J.R. Feddes,201190426434Hamidu, J.A., C.A. Torres, M.L. Johnson and D.R. Korver,20189729342946Addo, A., J.A. Hamidu, A.Y. Ansah and K. Adomako,201817175183Bramwell, K. and S. Martin,20092009Bourassa, D.V., R.J. Buhr and J.L. Wilson,20031216Lourens, A., H. van den Brand, R. Meijerhof and B. Kemp,200584914920Leksrisompong, N., H. Romero-Sanchez, P.W. Plumstead, K.E. Brannan and J. Brake,20078626852691Molenaar, R., R. Meijerhof, I. van den Anker, M.J.W. Heetkamp, J.J.G.C. van den Borne, B. Kemp and H. van den Brand,20108920102021Molenaar, R., I. van den Anker, R. Meijerhof, B. Kemp and H. van den Brand,20119012571266Yahav, S.,200965719732Hulet, R., G. Gladys, D. Hill, R. Meijerhof and T. El-Shiekh,200786408412Hulet, R.M.,20078610171019Decuypere, E., E.J. Nouwen, E.R. Kuhn, R. Geers and H. Michels,19791917131723Nichelmann, M., A. Burmeister, O. Janke, J. Hochel and B. Tzschentke,199810 in interpretation of endothermic reactions.]]>23369376Gualhanone, A., R.L. Furlan, M.F. Fernandez-Alarcon and M. Macari,201214914Romijn, C. and W. Lokhorst,195534649654Wekstein, D.R. and J.F. Zolman,1967125294297Kalita, N., N. Pathak, M. Ahmed and G.K. Saikia,20136774777