104 104 EGG STORAGE Recommended climate conditions during egg storage Storage Time Temperature Relative Humidity Egg Position 0–4 days 21–19°C 69–64°F 75–60 % Trays 5–7 days 18–17°C 63–61°F 78–70 % Trays & S.P.I.D.E.S (if done – temperature fixed at 18–17°C permanently) 8–9 days 16–15°C 60–57°F 80 % Blunt end up but if S.P.I.D.E.S, trays at 18–17°C 10 days or more 14–12°C 56°F 88 % Recommended to turn eggs but if S.P.I.D.E.S, trays at 18–17°C EGG WEIGHT LOSS Another crucial point to remember is the loss of egg weight that occurs. This is a continuous process, beginning during during the period of on- farm storage, continuing into the hatchery. 6–7 hours Body temperature of the hen 24 HOURS BEFORE LAYING The embryo’s life begins, requiring rapid cellular replication at 41°C. TIME OF DEPOSITION Fertile eggs contain a live embryo of 30,000–55,000 cells, which we must preserve until incubation. Avoid unstable temperatures and handle carefully to maintain cell vitality. COOLING EGGS Cooling eggs uniformly to 17°C – 22°C within 6–7 hours is vital. STORAGE Proper storage conditions include temperatures below 21°C and humidity between 60% and 75%, depending on storage time. Avoid condensation and temperature fluctuations to prevent embryo mortality. 17– 21°C 41°C 41°C S.P.I.D.E.S. (Short Period Incubation During Egg Storage) One of the most significant advancements in recent years is the use of S.P.I.D.E.S., which allows us to preserve eggs for extended periods. It’s crucial to remember that inside each egg, cell replication and mortality continue. The cell replication process must always exceed mortality levels during the correct incubator set points. Therefore, we must handle them with utmost care. To optimise hatchability, employ S.P.I.D.E.S. for eggs stored over 10 days. Egg weight loss LOHMANN › MANAGEMENT GUIDE › HATCHING EGG MANAGEMENT
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