Asian Journal of Animal and Veterinary Advances1683-99191996-3289Academic Journals Inc.10.3923/ajava.2013.885.892RamaphalaN.O. MbajiorguC.A. 7201387This study was conducted to determine the effect of egg weight on hatchability
and chick hatch-weight of COBB 500 broiler chickens. A total of 396 COBB 500
hatchable eggs classified according to three different egg weight groups as
small: (<49 g) medium: (50-59 g) and large: (60-69 g) were used in the experiment.
A complete randomized design of three treatments, three replicates with each
replicate having 44 eggs was used for the experiment. Simultaneously a linear
type equation was used to determine the relationship between egg size and responses
in hatchability values and chick hatch-weight. Results indicated that large-sized
eggs produced chicks with higher (p<0.05) hatch-weight than medium and small-sized
eggs. However, no differences were detected with fertility rate percentage,
hatchability percentage and percentage hatch of fertile. It is therefore concluded
from the result of the present study that sorting of COBB 500 broiler chicken
breeder eggs by weight prior to incubation might be advantageous in producing
uniform size COBB 500 broiler chicken hatchlings to meet specific market demands
with improved efficiency.]]>Abiola, S.S.,1999307782Abiola, S.S., O.O. Meshioye, B.O. Oyerinde and M.A. Bamgbose,2008578386Asuquo, B.O. and B. Okon,199320122124Bray, D.F.,19657111Caglayan, T., S. Alasahan, K. Kirikci and A. Gunlu,2009Alectoris graeca).]]>8813301333Bell, D.D. and W.D. Jr. Weaver,20025th Edn.,pp: 709-783pp: 709-783Farooq, M., K. Aneela, F.R. Durrani, A.K. Muqarrab, N. Chand and A. Khurshid,200117289293Fourie, C. and J.A.N. Grobbelaar,2003pp: 20-21pp: 20-21Havenstein, G.B., P.R. Ferket and M.A. Qureshi,20038215001508Hassan, S.M., A.A. Siam, M.F. Mady and A.L. Cartwright,2005Struthio camelus) eggs.]]>8419081912Islam, M.S., M.A.R. Howlider, F. Kabir and J. Alam,200218590Kalita, N.,199429281283Kamanli, S., I. Durmus and S. Demir,20105271274Kingori, A.M., J.K. Tuitoek, H.K. Muiruri and A.M. Wachira,2003337882Kingori, A.M.,201110483492Mbajiorgu, C.A.,201145300304Narkhede, J.S., V.R. Thatte, S.N. Singh, V.N. Kinhikar and S.N. Deshmukh,198116421424Petek, M., H. Baspinar, M. Ogan and F. Balci,200529537542Rashid, M.M., M.N. Islam, B.C. Roy, K. Jakobsen and C. Lauridsen,20052005Sahin, E.H., E. Sengor, I.S. Cetingul and M. Yardimci,20098115119SAS.,2008Ver. 9.2.,Shanawany, M.M.,198743107115Tona, K., F. Bamelis, K.B. De Ketelaere, V. Bruggeman and E. Decuypere,200281327332Tullett, S.G. and F.G. Burton,198223361369Uluocak, A.N., F. Okan, E. Efe and H. Nacar,199519181187Woanski, N.J., R.A. Renema, F.E. Robinson, V.L. Carney and B.I. Fancher,20068514901497Williams, T.D.,1994693559Wilson, H.R.,199147520