Abstract

The farm wastes generated in poultry production is: litter (mixture of droppings and bedding material), manure resulting from laying hen (cage rearing) and dead birds. The amount of waste generated depends largely on the weight of the rearing bird and the type of farm operation. Around 1000 kg live weight broilers produce about 17.1-17.4 kg of manure on dry weight basis and laying hen produce 13.4 kg of manure per day on dry weight basis (Edwards and Daniel, 1992). Overcash et al. (1983) reported that fresh manure production per 1000 kg live weight for broiler is 87 kg and for laying hens is 73 kg. Fresh manure produced per 1000 kg live animal mass per day for different classes of animals were 64 kg, 85 kg and 86 kg for layers, broilers and dairy cattle, respectively (ASAE, 2003). A flock size of 50,000 broilers reared up to 49 days of age with an average daily mortality of 0.1 per cent (4.9 per cent total mortality), produced approximately 2.2 tons of carcass (Blake, 2004).

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