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ANNEX IIU.K.REQUIREMENTS FOR THE USE OF HIGHER STOCKING DENSITIES

Requirements for the holdings — control of environment parametersU.K.

3.The owner or keeper shall ensure that each house of a holding is equipped with ventilation and, if necessary, heating and cooling systems designed, constructed and operated in such a way that:U.K.

(a)

the concentration of ammonia (NH3) does not exceed 20 ppm and the concentration of carbon dioxide (CO2) does not exceed 3 000 ppm measured at the level of the chickens’ heads;

(b)

the inside temperature, when the outside temperature measured in the shade exceeds 30 °C, does not exceed this outside temperature by more than 3 °C;

(c)

the average relative humidity measured inside the house during 48 hours does not exceed 70 % when the outside temperature is below 10 °C.