caa a22 4500 397569378 CHVBK 20180308164837.0 cr unu---uuuuu 161202e199611 xx s 000 0 eng 10.3382/ps.0751404 doi (NATIONALLICENCE)oxford-10.3382/ps.0751404 Eggshell Conductance and Other Functional Qualities of Ostrich Eggs [Elektronische Daten] [V. L. CHRISTENSEN, G. S. DAVIS, L. A. LUCORE] Eggshell conductance was measured and eggshell conductance constants were calculated for eggs from ostriches. In addition, egg water, yolk, albumen, shell, and total solids were measured in an effort to determine the maternal investment of ostrich eggs. The results of the study suggest that the optimal incubator humidity for ostrich eggs is less than 25% to allow a 15% loss of initial egg mass during the 45-d incubation period. This low humidity does not preclude increasing humidity during the actual hatching process. In addition, incubation temperatures need to be adjusted to allow a longer development time for the embryo to attain an adequate level of maturity to survive the plateau stage in oxygen consumption or to prevent the use of limited energy of the yolk to survive the anoxia of tucking and internal pipping. The optimal incubation temperature of ostrich eggs appears to be between 36.1 and 36.9 C. © 1996 Poultry Science Association, Inc. Physiology and Reproduction nationallicence eggshell nationallicence conductance nationallicence ostrich nationallicence CHRISTENSEN V. L. aut DAVIS G. S. 2To whom correspondence should be addressed. aut LUCORE L. A. aut Poultry Science Oxford University Press 75/11(1996-11), 1404-1410 0032-5791 75:11<1404 1996 75 ps https://doi.org/10.3382/ps.0751404 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.3382/ps.0751404 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- CHRISTENSEN V. L. aut NATIONALLICENCE 700 1- DAVIS G. S. 2To whom correspondence should be addressed aut NATIONALLICENCE 700 1- LUCORE L. A. aut NATIONALLICENCE 773 0- Poultry Science Oxford University Press 75/11(1996-11), 1404-1410 0032-5791 75:11<1404 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