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THE INTENSIVE SYSTEM
CHOOSING COMMERCIAL LAYING STOCK I
ENVIRONMENT FOR LAYING STOCK
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allow not less amino acid battery cages belt birds housed broody bulk bin cage blocks cage systems calcium cent chaff cleaning coccidia cost day length Deadstock deep litter house deep pit dichlorvos disease Disinfection Dried poultry manure droppings pit Ectoparasites egg collection egg production ensure environment equipment factors farm feed intake feed trough floor area formalin ft candles Fully-stepped gangway increase kg 1 sq labour laying bird laying cycle laying flock laying house light intensity livestock liveweight minimum monorail moult nest boxes Newcastle Disease nitrogen number of birds occur packing station peck-order period phosphorus point of lay poultry house problem protein pullets raised floor rearing reduce result semi-stepped shell quality slats sq ft stepped cages stocking density strains straw Table tier tonne Total units usually ventilation rate vitamins weeks of age wire floors