Incubation period game birds

However, some studies indicate that eggs set with the large ends downward hatch equally good and under natural conditions, the hens hatch eggs in horizontal position. This is because of physical damage caused b.

Under natural conditions,. However, modern incubators are also equipped with automatic turning mechanism which turns the eggs six to eight times a day. The day incubation period of domestic fowl can be seen as consisting of first days incubation in the setter and last two to three days hatching in t Hatching Operation i Testing for fertility: Infertile egg and dead embryo can be detected about days after incubation by the process call candling.

The machine used to detect living or dead and developing embryos called the egg candler. Candling consists of the passage of concentrated source of light through the egg in a dark room in order to see through the egg. It is usually not done in commercial basis because of the number of eggs involved. However, it is routinely done in research stations. At least two candling are done usually in six to seven days of incubation.

With candling, you can determine fertile eggs. Here, live embryo shows a spider-like appearance in the egg. Infertile eggs are clear with no spider-like appearance. During first candling, one can determine embryos that die during the first week called Dl died within first week. These eggs do not show any radiating blood vessels. Rather, blood vessels adhering to the shell or a pink blood ring maybe seen.

If the first candling was well done, only dead embryos in the period between he first and second period will be tested put ,tie 1ie embryo nar1y fills the egg or moves when tie egg is rotated and blood vessels become apparent. Dead embryos appear as a liveless mass of dark shadow. During the second candling, the live embryo fills the entire egg, i. The belly has a blackish-chestnut patch that is surrounded by black buff feathers that give a scaly appearance not seen in the Gambel.

Incubation period of 22 to 23 days at The nest is a shallow scrape lined with vegetation on the ground beneath a shrub or other cover. Once they are hatched, both parents look after the young. Web Hosting by AppliedTheoryNetworks. The generally accepted temperature for incubating almost all birds eggs is between Slight variations around this temperature range is alright, but varying more than a degree up or down for extended periods of time can have an impact on your hatch rate, cause birth defects, and even prevent eggs from hatching.

A few of the exceptions to this temperature range would be for Emu and Ostrich eggs. Emu eggs require The amount of time required to incubate an egg can very quite a bit depending on the type of bird. See the chart below.