Temperature is the primary condition for embryo development, and the developing chicken embryo is sensitive to the environmental temperature.
most sensitive. Different types of incubators require different incubation temperatures. three-dimensional incubator,
The suitable temperature is 37.8-38°C, and the flat incubator is about 0.25°C higher than the three-dimensional incubator. embryo age
At the same time, the incubation temperature is different. On the 4th day of hatching, the heat production of each chicken embryo is 1.63 joules.
The 19-day embryo was as high as 376.2 joules. Egg temperature gradually increased with embryonic development, 10, 15, 20and 21-day embryo age, which were 0.4°C, 1.3°C, 1.9°C and 3.3°C higher than the temperature of the incubator.
Due to the low heat production of embryos in the early stage of hatching, the slightly higher and stable temperature of 37.8-38.0 °C can increase the temperature at this time.
Strong sugar metabolism, promote the sprouting and development of embryos. If the incubation temperature is too high at this time, especially in 2-3
The age of the embryo is easy to make the heart beat nervous, and the overworked blood vessels lead to the rupture of blood vessels, resulting in the death of “blood circle eggs”.
embryo. The heat production of the late embryo is large, and the temperature should be lowered to 37.5- 37.0 °C. hatch Different methods use different temperature systems. When the whole batch is hatched, the temperature-changing incubation should be adopted. The embryos are 1-11, 12-18 and 19-21 days old, and the appropriate incubation temperature is 37.8°C, 37.6°C and 37.5-37.0°C. Incubating in batches, that is, when there are eggs of different embryonic ages in an incubator, it is advisable to use temperature-sensitive incubation. The incubation temperature at 1-18 days of ring age and 19-21 days of age was 37.8°C and 37.4-37.0°C, respectively. Different seasons have different incubation temperatures. The temperature setting should be accurate, and the thermometer used should be calibrated before hatching, and only qualified ones can be used.
There are many more conditions, see the next article.
Post time: Jun-03-2022