The Whole Process of Egg Hatching-----your Farm Guide

Egg hatching is a key link in poultry production. Scientific and standardized hatching management directly affects the quality of chicks and breeding benefits. As a professional service provider in the poultry industry, we will introduce the professional technical points of modern egg hatching in detail to help farmers improve the hatching success rate.

1. Breeding egg selection and storage specifications: high-quality breeding eggs are the basis for successful hatching.

①Qualified breeding eggs should meet the following standards:

- Egg weight 50-65 grams (slightly different for different varieties)

- Egg shape index (long diameter/short diameter) 1.30-1.35

- Eggshell thickness 0.33-0.35mm

- No cracks, no deformities, no pollution

② Storage conditions:

- Temperature: 12-15℃ (15℃ for 1 week, and 12℃ for more than 1 week)

- Relative humidity: 75-80%

- Storage time: no more than 7 days (the hatching rate decreases by 0.5-1% for every additional day)

- Storage angle: blunt end upward, tilt 45 degrees and flip 2-3 times a day

2. Control of incubation environment parameters: Modern incubation technology has precise requirements for environmental parameters.

① Temperature control

- Early stage (1-18 days): 37.5-37.8℃ (constant temperature incubation)

- Late stage (19-21 days): 36.8-37.2℃ (cooling during hatching)

- Temperature difference control: within ±0.1℃

② Humidity management

- 1-18 days: 50-55% relative humidity

- 19-21 days: 65-70% relative humidity

- Wet bulb temperature: 28-29℃ in the early stage, 30-32℃ in the late stage

③ Ventilation requirements

- Oxygen content ≥21%

- CO2 concentration ≤0.5%

- Air flow speed 0.1-0.2m/s

3. Incubator selection suggestions: Choose the appropriate equipment according to the production scale.

You need to choose from several aspects: type; capacity range; applicable scenarios; technical characteristics. For example:

① Box incubator; 100-1000 eggs; small farms | automatic egg turning; temperature and humidity control

② Lane incubator; 10,000-50,000 eggs; medium-sized farms | partition control; energy-saving design

③ Large cabinet incubator; 50,000-100,000 eggs; large-scale breeding | intelligent monitoring; integrated design

Purchase points:

① Select PID precise temperature control system (±0.1℃)

② With automatic egg turning function (1-2 hours/time)

③ Equipped with emergency power supply system

④ Consider after-sales service and accessories supply

4. Key points of hatching process management

① Egg turning operation

- Frequency: 1-2 hours/time

- Angle: 45° (tilted front and back)

- Stop time: Stop turning eggs after 18 days

② Egg inspection

- Day 7: Check fertilization and eliminate infertile eggs

- Day 14: Observe embryonic development and eliminate dead embryo eggs

- Egg inspection intensity: 100-150lux

③ Tray drop operation

- Time: Day 18

- Key points of operation: Smoothly transfer to the hatch tray to avoid vibration

5. Management during the hatching period

① Shelling process

- Normal shelling time: Day 20.5-21

- Time from pecking to hatching: 12-24 hours

- Principle of midwifery: Do not assist if blood is seen, but be careful to assist if no blood is seen

② Chick handling

- Stay time after hatching: 12-24 hours

- Grading standard:

- Healthy chicks: lively and active, with well-healed navel

- Weak chicks: listless, unstable

- First drinking time: within 24 hours after hatching

6. Solutions to common problems

① Early hatching: Check if the temperature is too high (over 38°C)

② Delayed hatching: Check if the temperature is too low or the eggs are stored for too long

③ Dehydration of chicks: caused by low humidity during hatching (<60%)

④ Poor healing of the umbilicus: temperature fluctuations or bacterial infection in the late incubation period

7. Indicators for evaluating hatching effects

① Hatching rate of fertilized eggs: ≥90% (excellent level)

② Healthy chick rate: ≥95%

③ Concentration of hatching time: 80% of chicks are hatched within 24 hours

Through scientific hatching management, the overall hatching rate can be increased by 5-8 percentage points, and 40-60 more healthy chicks can be obtained for every thousand eggs, significantly improving the economic benefits of breeding.

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