Basic information

Layer birds kept in battery cage, eating a normal ratio and laying at a rate of 80%, will produce about 180 kilocalories of heat every day. Thus 10,000 layers will produce as much heat in a day as a furnace burning 231 litres of fuel oil, this means that on a warm summer day, a ventilation failure could result in a rise in the temperature, within the building, of 16°C in one hour. When the hen is in a comfortable environmental temperature (21-25°C) she will lose most of that heat by sensible means. Sensible heat loss is by three pathways

Regulation of heats in battery cage

1. Conduction, whereby she touches a surface cooler than her own surface, for example the floor of the cage or the sides of a cool water trough;

2. Convection, whereby a cool breeze carries heat from her body; and

3. Radiation, the electromagnetic process whereby heat moves from a warmer to a cooler surface without using a medium (heat flows to the earth from the sun by radiation)

Series of products to serve the poultry farm fully, click the name to learn more

1. Steel structure poultry house, opening type for hot countries and close type for cool countries

2. Poultry hatching equipment’s capacity of eggs up to 120,000+ to be hatching house

3. Chicken rearing cage and equipment of layer, day old chicken, brooder, broiler and chicken parents

4. Chicken feed processing equipment from feed crushing and mixing to stock to feeding chicken

5. Paper egg tray manufacturing equipment, the output from 1000 trays per hour to 6000 trays per hour

6. Egg processing equipment from automatic egg collection to packing egg to trays

7. Chicken slaughtering equipment from slaughter to vacuum package

8. Chicken manure cleaning and drying equipment to control the water content in chicken manure between 10% and 40%

9. Other poultry farm equipment are coming soon...

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Processes

When the laying hen in battery cage is in a very warm environment (28-35°C) she must work at losing the heat she produces. She does so by raising and spreading her wings and separating herself from other birds if possible. Despite her best efforts, however, heat loss by sensible means decreases and loss by latent means (evaporation) increases

One reason is that, as the environmental temperature increases, the difference between the temperature of the hen's body (41°C) and the surrounding air, equipment and walls becomes very small. Thus she cannot readily lose heat by sensible means and must do so by evaporation. A second reason is that the evaporation of water uses a lot of heat - it is an effective way for her to keep cool

How does she go about evaporating water since she does not have sweat glands? She does it by panting, similar to the dog. The hen can easily increase her respiration rate to 10 times normal and, in addition, indulges in gular (throat) flutter to aid in evaporation. One can readily see the rapid throat movement in panting birds. This throat flutter moves air in and out of the throat area and increases evaporation without such air entering the lungs. 

During a hot, dry day this is very efficient but on a hot, humid day the hen must pant more to keep cool. This evaporation means that a readily available supply of clean, fresh water is vital. The heat from the laying hen, either in sensible or latent form, must be removed from the building

Procedures

Feed and lighting in battery cage

1. During hot weather it is extremely important to monitor feed consumption of layers raised in battery cage daily, to ensure an adequate intake of nutrients per bird on daily basis. This is particularly important for the 24 to 30 week old pullet. Special feed formulations do exist for summer feeding. Consult your feed company for details. Stirring existing feed within the trough by operating feed lines between feedings helps increase consumption. Running the feeders early in the morning will stimulate feed consumption during the cooler hours of the day

2. The lighting system time clocks should be set to come on in the early morning, cooler hours, i.e. before morning

Ventilation system management in battery cage

1. Air-inlet baffles must control the inlet air to provide proper air movement, even distribution and proper house static pressure. Automatic baffle controllers using a static pressure sensor are recommended. Without automatic baffle control, adjust inlet baffles to keep the house static pressure within an acceptable range as fans turn on and off

2. A heat stress problem can occur any time during the year if the ventilation system fails to work properly. In winter when large fans are covered and outside doors on air-intakes are closed, it is important to ensure that there is adequate back-up fan capacity to cool the barn. An equipment failure at this time is just as serious as in the summer. Check the high temperature warning system regularly year round and be especially sure that winter fans are in working order

Our services

1. We give adequate instructions to our customers to ensure accurate temperature in battery cage

2. We ensure that our engineers put our customers through on how to use our products

3. We emphasize precautions on any of our equipment customers are purchasing

4. We do follow up to see how effectives our equipment are working

Frequently ask questions

Q: How do you reduce heat stress in chicken?

A: Ensuring cross ventilation is the key factor

Q: How does battery cage system work?

A: Battery cage keep poultry birds safe

Q: What is the importance of controlling heat in battery cage?

A: It aids egg production in laying birds and aids rapid growth in broilers

Q: Does heat affect egg production?

A: It does greatly affect the rate at which layers lay eggs