Effects of egg storage time on embryo mortality rates and poult quality
2006
Mroz, E. | Orlowska, A. | Michalak, K. | Reiter, K.,University of Warmia and Mazury, Olsztyn (Poland). Dept. of Poultry Science
The aim of the study was to determine the effects of an extended egg storage period on the time of embryo death during incubation and poult quality. A prolonged storage period (over 9 days) increased early embryo mortality rates. The highest embryo mortality rate was recorded in the phase of early vasculogenesis. Between 11 and 24 days the embryo mortality rate was much lower in eggs stored for 10 to 12 days, compared with those stored for a shorter time. The results of the study did not confirm explicitly the effects of egg storage time on poult weight. The body weights of newly hatched poults ranged from 64.6 g to 67.0 g. The poults that hatched from eggs stored for 11 and 7 days were the heaviest, and those which hatched from eggs stored for 10 and 8 days - the lightest. The number of poults with anatomic defects was high in all groups. General weakness and leg weakness were more frequent in poults that hatched from eggs stored for 11 and 12 days, in comparison with those which hatched from eggs stored for 7 to 10 days
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