The ideal holding temperature before setting is 60 degrees. They should be set within seven days of our shipping them. All eggs sent were laid the day of shipping or the day before. They are sent by priority mail and should be to you within 3-4 days once they have shipped. If you go back to the breed pages and order there, you will be ordering ducklings - not eggs. If you want to order hatching eggs, you must do it at the bottom of this page. If you want your class or your children to experience the incubation and hatching experience, we can supply you the eggs. If your goal is only to get ducklings, it is better to order the ducklings.
Late mortality can be reduced by using different incubation programs for different flock ages (El-Hanoun et al, 2012). However, despite oxygen entering the eggs more easily, the variability between eggshell porosity and thus late mortality persists, as an intrinsic characteristic of duck eggs. Increased conductance facilitates oxygen uptake by the late embryo. The mobilization of calcium carbonate from the inside of egg shell reduces shell thickness and frees pores previously blocked by calcium carbonate crystals. This process increases the risk of excessive evaporation and thus dehydration, which is easily overcome by increasing relative humidity (RH) during incubation.Įgg shell conductance also increases during incubation, because the shell becomes thinner and the number of pores increase during mineralization of the bones. It is essential that this process thoroughly removes the cuticle from every egg, to avoid variation in the batch. To equalize shell conductance within a batch of eggs, the cuticle is often removed by washing the eggs in a hypochlorite solution. In commercial duck incubation, variable cuticle thickness negatively influences hatchability. The cuticle - thicker on duck eggs than on those of the chicken - is a waxy, protein-rich layer that covers the pores of the egg shell, limiting the diffusion of water (= weight loss) and the exchange of carbon dioxide and oxygen.
These features, the shell, porosity and cuticle depth of Peking duck eggs vary not only between flocks, but also within batches of eggs from a single flock.
The porosity or conductance of the shell depends on the structure and density of the pores and shell thickness, including the cuticle. Peking duck eggs that weigh more than 100g are not exceptional. Finally, fully grown duck embryos suffocate due to an inadequate supply of oxygen.ĭuck eggs differ from chicken eggs in size and shell porosity. These embryos die during the fourth week of incubation as a result of insufficient water evaporation (= egg weight loss) from the eggs. In duck incubation, the most common challenge is the high number of so-called ‘drowned’ or ‘wet-embryos’. The incubation of Peking duck eggs is often thought more complicated than that of chicken eggs, primarily because of unfamiliarity with the specific properties of duck eggs that have an impact on incubation.
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