Poultry Light Manager – light controller for poultry houses
Poultry Light Manager (JT-PLM) – light controller, lighting, dimmer and temperature controller for small animal- and poultry houses
The illumination has an intensive influence on the behaviour and the efficiency of poultry. An optimal illumination is determined by balancing of lighting in the shade and it requires a flicker-free light. The lamps should be of a type which is dimmable, energy-saving and suitable for installation in stables.
Perceptions from science and approved methods - Light takes the function as a biological clock for poultry. - Programmable lighting forces the physical activity and the eating behaviour of the poultry. - In poultry houses it is necessary to reach a light intensity of 10 – 15 lux to simulate brightness. For simulation of darkness a maximum light intensity of 5 lux is acceptable. - During changing the light sliding or graded transitions should be kept. - The artificial lighting should have a twilight duration of min. 20 minutes. - A sudden start of darkness drives the animals into flurry of activity and stress. - A brighter light up of the feeding ground and the watering place and lesser light in the area of nest and rest is recommended. - The minimum duration for illumination should be 10 h/day. An illumination time of 14 h/day up to Max. 16 h/day is more reliable. - Programmed lighting and twilight phases can affect the amount and weight of eggs and the food consumption. It has also a special influence on poultry behaviour and activities.
Example: The graphic shows the controlled artificial lighting in comparison with length of daylight during different seasons of the year
The graphic shows an average lighting time of 15 hours (yellow zone). The light controller device executes to turn on and off the lighting according the time set. The controller also regulates the amount and duration of the artificial lighting in accordance of the daylight by using a light sensor. In the morning the artificial lighting starts with simulation of sunrise and will be later switched of after natural sunrise. In the evening the full artificial lighting starts before sunset. It works until a given time and ends with the simulation of sunset. That causes the same length of lighting in the poultry house independent of the season of the year and it takes a good effect on the laying performance of the hens during this dark season. While the dimming phase in the evening the hens are able to find their perches. The hens will not panic because it will not be dark abruptly.
Light and coldness In poultry farming a certain connection between light and coldness is known. During freezing temperature periods the hens need more light to take more food and not get going to feel cold. That is caused by the metabolism of the hens which isby natureon a light-dark-cycle with less when 12 hours darkness. Two hours after the hen has taken its food the first food residue is to find in the dung. Nine hours afterthe hen has taken its food the proteins have reached the feathering and the hens metabolism is completed now. This is a big problem during wintertime with short daylight periods and sunless weather.In this period the hens are sitting up to 16 hours in a dark hen house and do not take any food. It is easy to calculate when a hen has lost so much energy that it will finally fall from the perch. That means in the cold and dark time of the year a long lighting time in the hen house is required urgently. Starting from a population density of four hens per square meter a forced ventilation will be necessary. The temperature should not go down below 10 °C to retain a good laying performance. Just in case that the laying performance is not so important the temperature should not go down under the freezing point anyhow. Only thus can guarantee a stable water supply what is essential for the hens.
All the necessary environment conditions like lighting and temperature can be regulated by the Poultry Light Manager (JT-PLM) from JOSTechnik - Gerd Jost.