K. Tona
Laboratory of Poultry Sciences, University of Lome, B.P. 1515, Lome, Togo
K. Agbo
Laboratory of Poultry Sciences, University of Lome, B.P. 1515, Lome, Togo
B. Kamers
Department of Animal Physiology, University of Agriculture, Abeokuta, Nigeria
N. Everaert
Department of Animal Physiology, University of Agriculture, Abeokuta, Nigeria
H. Willemsen
Department of Animal Physiology, University of Agriculture, Abeokuta, Nigeria
E. Decuypere
Department of Animal Physiology, University of Agriculture, Abeokuta, Nigeria
M. Gbeassor
Laboratory of Poultry Sciences, University of Lome, B.P. 1515, Lome, Togo
ABSTRACT
Chicken post-hatch performance is known to be related to embryonic developmental parameters. However, strain or genotype differences with regard to embryo physiological parameters have received little attention. A total of 1,200 hatching eggs produced by Lohmann Brown (LB) and Lohman White (LW) breeders of the same age were studied. Between 62 and 150 h of incubation, eggs Resonance Frequency (RF) was measured as indicator of early embryonic development. Also, albumen pH was measured between setting and d 8 of incubation. From d 10 to 18 of incubation, remaining albumen and embryos were weighed. During the last days of incubation, hatching occurrences were monitored after every four hours and hatched chicks were recorded. Results indicate that RF of LW eggs were lower than that of LB eggs (p<0.01) and starting time point of RF decrease occurred earlier in LB eggs than in LW eggs. Albumen pH of LB eggs was lower than that of LW eggs at day 8 of incubation. Remaining albumen weight at 14 and 16 d of incubation was lower in LB than in LW (p<0.05) while embryo weights increased more rapidly in LB strain than in LW strain. It is concluded that LB and LW embryos have different growth trajectories and should be incubated at different conditions.
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How to cite this article
K. Tona, K. Agbo, B. Kamers, N. Everaert, H. Willemsen, E. Decuypere and M. Gbeassor, 2010. Comparison of Lohmann White and Lohmann Brown Strains in Embryo Physiology. International Journal of Poultry Science, 9: 907-910.
DOI: 10.3923/ijps.2010.907.910
URL: https://scialert.net/abstract/?doi=ijps.2010.907.910
DOI: 10.3923/ijps.2010.907.910
URL: https://scialert.net/abstract/?doi=ijps.2010.907.910
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