The aim of this study was to evaluate whole substitution of Egyptian berseem hay (Trifolium alexandrinum)
with a mixture of Atriplex nummularia and Acacia saligna (1:1 DM) in the diet of Barki lambs for
70 days. Thirty six lambs (27.070.89 kg initial BW) were divided into four treatment groups of nine
lambs each and fed: (1) the Control group with no substitution (70% concentrate mixture and 30%
berseem hay, DM basis), (2) A. nummularia and A. saligna mixture without fungal treatment (treatment
group AU), or (3) Trichoderma reesei treated A. nummularia and A. saligna mixture (treatment group AF),
or (4) A. nummularia and A. saligna mixture supplemented with Saccharomyces cerevisiae at 0.5 g/kg D