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Megapode eggs take from 49 to 90 days depending on the mound and ambient temperature. Even in other birds, ambient temperatures can lead to variation in incubation period. [7] Normally the egg is incubated outside the body. However, in one recorded case, the egg incubation occurred entirely within a chicken.
An incubator is a device simulating avian incubation by keeping eggs warm at a particular temperature range and in the correct humidity with a turning mechanism to hatch them. The common names of the incubator in other terms include breeding / hatching machines or hatchers , setters , and egg breeding / equipment .
In response to the conditions of the environment, some mammals, such as bat delay the implantation due to the cold temperature in winter. [23] Another factor is due to the shortage of food stocks during winter as the insects are being driven away and as the result, bat hibernate in pregnant condition.
Tyndallization essentially consists of heating the substance to boiling point (or just a little below boiling point) and holding it there for 15 minutes, three days in succession. After each heating, the resting period will allow spores that have survived to germinate into bacterial cells; these cells will be killed by the next day's heating.
Temperature control system maintained temperatures between 37.8–37.9°C using a thermistor-regulator, with real-time monitoring at the embryo level. The study set a milestone, showing that chick embryos could survive up to 18 days in opened shells within this incubator. [11]
An Egyptian egg oven or Egyptian mamal is an oven for hatching eggs by incubation using artificial heat. [1] Manmade hatching ovens in Egypt date back to the 4th century BC. [2] Although using old processing methods, they were considered effective at hatching chickens, especially in comparison to other techniques of the time. [3]
The time required for development in the mosquito ranges from 10 to 28 days, depending on the parasite species and the temperature. This is the extrinsic incubation period of that parasite. If a female mosquito does not survive longer than the extrinsic incubation period, then she will not be able to transmit any malaria parasites.
The main stages at which embryo transfer is performed are cleavage stage (day 2 to 4 after co-incubation) or the blastocyst stage (day 5 or 6 after co-incubation). [1] Embryos which reach the day 3 cell stage can be tested for chromosomal or specific genetic defects prior to possible transfer by preimplantation genetic diagnosis (PGD).