Ideally, eggs need to be turned between 42-45 degrees. Turning of less than 40 degrees will impact on chick quality and angles of less than 35 degrees will have a profound effect on mortality and result in very poor chick quality. Optimal turning is particularly critical between the fourth and seventh days of incubation to prevent early mortality.
When new, most incubation systems will satisfy the correct turning requirements. Turning that relies on a mechanical system, such as those that utilise a male and female arrangement or connect by pushing a turning arm against a plate on the trolley, will all become less efficient over time. This is usually caused through metal to metal and mechanical linkage, wear and tear. Some systems transfer turning energy from one trolley to the next increasing the incidence of turning angle reduction as joints wear. With all communal type turning systems it is inevitable that over a time period of say, 5 to 10 years, turning angles will significantly degrade with a deleterious effect on hatchability.
With EmTech systems, maintaining the correct turning angle is a given. Every single trolley has its own electrical turning actuator that is simply connected to the power supply by a plug and socket arrangement. The trolley will always maintain turning angles of 42-45 degrees irrespective of floor conditions. Another major advantage is that if in the rare event of a turn failure, only one trolley will be affected. Conversely with mechanical systems that employ a communal motor or actuator, many trolleys will be affected. EmTech systems also utilise programs that can vary the turn position throughout the incubation process and vary the turning frequency which can be especially important during the first week of incubation.
Turning angles can also be hugely influential on airflow characteristics within the incubator and can make a significant difference when trying to create a stable environment and maintain temperature uniformity. The EmTech turning system supports the >EmTech Effect< by helping to maintain a homogenous environment within the setter. It also ensures that the incubator cabinet does not require metal posts to support the communal turning apparatus. These supports bridge the incubator walls and act as a conduit, draining heat from the cabinet and causing damaging temperature fluctuations that can result in a prolonged hatch window and reduced chick quality.
For those occasions when eggs may need to be stored for longer periods the EmTech turning system, with minimal adaptation, can easily be employed in an egg-storage room to allow trolleys of eggs to be easily and conveniently turned.
The individual actuator driven trolley system is employed across the entire EmTech range.
It utilises a 1,000 newton, IP 66 rated, 24vdc turning actuator, and is now available as an upgrade for older Buckeye type incubation systems. It can also be used to convert mechanical turning systems to the ‘on-board’ method, used as standard in many of today’s hatcheries.