S. A. ABDALLA, A. H. .SULIEMAN, M. E.. MANSOUR and H. E. AHMED.*

Sheep Research Station, El Huda, El Managil, Sudan.

 One of the causes of the increased livestock production cost is the high prices of the feeding stuffs, specially protein concentrates.

 In the present paper, the effect of feeding lambs on rations containing different levels of poultry litter (PL) as source of non protein nitrogen (NPN) was examined.

 The PL used in the study was collected from a poultry farm managed in the open system using the conventional feeding troughs while the floor of the pens was bedded with sawdust which was cleaned every 2 – 4 weeks.

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