ANATOMY

Detailed explanation-1: -Eggs must be turned at least five times every 24 hours. Turning more frequently is better and once per hour is best. Keep accurate records to ensure the eggs are turned three to five times each 24-hour period.

Detailed explanation-2: -By turning the eggs, the yolk turns within the albumin, once again moving the yolk away from the shell and making it safe for the embryo on top until it is time to turn again. Eggs will need to be turned a minimum of 3 times per day, and 5 times is even better.

Detailed explanation-3: -Optimum turning frequency has been demonstrated to be 96 times daily (Wilson, 1991; Elibol and Brake, 2003), although 24 times daily has been accepted as the most practical under commercial circumstances, owing to the relatively small differences between 24 and 96 times (Freeman and Vince, 1974).

Detailed explanation-4: -Research has showed that egg turning is critical in the first week of incubation, especially first 3 days. It has also shown that after 15 days turning it is not necessary and stopping will not affect hatchability.

Detailed explanation-5: -If not turned for long periods the yolk will eventually touch the inner shell membranes. When the embryo touches the shell membranes, it will stick to the shell and die. Regularly turning the egg will prevent this, and ensure healthy embryo development.