Chemical Evaluation of Chicken Droppings

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Muinga, R. W.
Kayongo, S. B.
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An experiment was carried out at the National Animal Husbandry Research Station, Naivasha to determine the chemical composition of chicken droppings. Chicken droppings were obtained from six sources, reflecting the classes of birds and type of housing available at the Research Station. The six sources were: young cocks, pullets (all deep litter), layers on deep litter, slatted floors or cages and pullet chicks housed in an electric tier brooder. Significant differences (P<O.05) between the sources of poultry droppings were observed on crude protein, crude fibre, ash, nitrogen-free extractives and ether extractives. Crude protein values varied from 14.6% for young cocks to 22.3 % for layers in cages. Corresponding values of crude fibre were respectively 27.9 and 17.1 % for young cocks and caged layers, but were lower than those for broiler waste (30.0%). Ash content was highest (20.5%) for caged layers and lowest (10.2%) for chicks. Average ash content in droppings from pullets and young cocks was 11.6%. Droppings from chicks contained 2.3 per cent ether extractives, while the value for droppings from and pullets was 0.9%. Nitrogen-free extract values were highest (48.8%) in droppings from chicks and lowest for layers on slatted floor (38.4%). Droppings from layers on deep litter was deemed ,to be most suitable as feed resource in terms of high crude protein and generally low fibre content. Although cage waste had the highest value of crude protein, the high ash content limited its use as a feed resource.
East African Agricultural And Forestry Journal, 50 (No 1), p. 85-88