caa a22 4500 397567650 CHVBK 20180308164832.0 cr unu---uuuuu 161202e199609 xx s 000 0 eng 10.3382/ps.0751069 doi (NATIONALLICENCE)oxford-10.3382/ps.0751069 The Effect of Broiler Breeder Flock Age and Length of Egg Storage on Egg Albumen During Early Incubation [Elektronische Daten] [C. E. BENTON, J. BRAKE] The objective of these two experiments was to determine the temporal changes in albumen during storage and early incubation as a means of understanding some of the effects of egg storage on early embryonic development. Eggs from 30- or 50-wk-old broiler breeder hens were incubated (37.5 C dry bulb, 30 C wet bulb) after storage for 0 (fresh) or 5 d (18 C, 75% RH) in Experiment 1. Albumen height, albumen pH, and egg weight loss were recorded at 2, 24, 48, and 66 h of incubation. The same measurements were taken on another group of eggs from 43-wk-old hens stored for 0 (fresh), 4, 8, or 12 d in Experiment 2. All hens were of the same strain. Egg weight loss during incubation was significantly greater in fresh eggs than in stored eggs in Experiment 1. Fresh eggs had significantly greater albumen height and significantly lower albumen pH than stored eggs in both experiments. These differences diminished with length of incubation. Because the blastoderm is located adjacent to the albumen, changes in the viscosity or pH of the albumen may play an integral role in determining the viability of the embryo during the very early stages of development. Incubation of fresh eggs without storage appears to expose the developing embryo to an inappropriate trans-vitelline membrane pH gradient and a thick albumen that may slow vital gas diffusion and limit nutrient availability. These conditions may cause an increased incidence of embryonic death. © 1996 Poultry Science Association, Inc. Education and Production nationallicence albumen nationallicence flock age nationallicence incubation nationallicence embryo nationallicence storage nationallicence BENTON C. E. aut BRAKE J. 2To whom correspondence should be addressed. aut Poultry Science Oxford University Press 75/9(1996-09), 1069-1075 0032-5791 75:9<1069 1996 75 ps https://doi.org/10.3382/ps.0751069 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.3382/ps.0751069 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- BENTON C. E. aut NATIONALLICENCE 700 1- BRAKE J. 2To whom correspondence should be addressed aut NATIONALLICENCE 773 0- Poultry Science Oxford University Press 75/9(1996-09), 1069-1075 0032-5791 75:9<1069 1996 75 ps Metadata rights reserved CC BY-NC-4.0 http://creativecommons.org/licenses/by-nc/4.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-oxford