Download - Care and storage of hatching eggs before
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Care and Storage of Hatching Eggs - Before
incubation
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Why?
good quality eggs
Quality chicks
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• Good quality egg production1. Collection2. Cleaning3. Fumigation4. Grading5. Storing 6. Incubation
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1. Collection of eggs
• From healthy well managed breeding stock– No vitamin deficiencies– No mineral deficiencies
High hatchability
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2. Cleaning of eggs
• Layer pen – – Clean– Litter- renew frequently
• Caged birds– Remove excreta tray frequently– Angled bottom – eggs roll outside
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• Egg shell – avoid contamination of eggs– High velocity air– Brushes– Sand paper– Wet clothes
• Do not use water ??• If essential ??
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3. Fumigation
• Disinfectant fume – 20 min
• Proper gas concentration
• Ventilate properly after fumigation
• To fill the air sac with normal fresh air
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4. Collect eggs
• 3 – 5 times per day• At least 2 time
• If Environmental temperature is high –
collect more frequentlyEnsure proper cool downavoid undue effect on the
embryo
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5. Handling
• Vigorous shaking - Bad• Truck inside Temperature – 16 ‘C• High rotating – Bad• Non-stop Journey
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6. Grading
• According to the weightSmall Medium 55- 60 gLargeJumbo
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7. Storing of eggs
• Have to consider- Duration- Temperature- RH- Orientation and
positioning- Turning
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1. Duration – – Less than 7 days– If not - Reduce hatchability Increase Incubation time
2. Temperature - – Two types - whole storage 20-21 ‘C
Pre Warming
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1. Relative Humidity - 75-85 %– High RH – High MO growth– Low RH - High evaporation
- weight loss
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1. Orientation & Positioning– Broad side – upward ??
- Air cell
2. Turning – At least once -a- day– If not ???
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8. Pre - warming
• Bringing back eggs from
Storage Temperature
Room Temperature
• Pre-warming Temperature 23’C - !8 hr