TY - SER AU - Omer,H.A.A. AU - Abd El-Rahman,H.H. AU - Salman,Fatma M. AU - Abdel-Magid,Soha S. AU - Mohamed,M.I. AU - Awadalla,I.M. TI - Response of growing calves to diets containing different levels of exogenous enzymes mixture KW - Calves KW - Growth KW - Rumen fermentation KW - Feeding and feeds KW - Enzymes in animal nutrition KW - Feed additives KW - Weight KW - Digestive enzymes KW - Feed utilization efficiency KW - Dietary nutrient sources N1 - Includes references N2 - In a feeding trial lasted 154 days sixteen crossbred streers with an average weight 163.5+1.07 kg were divided randomly into four equal experimental groups to investigate the effects of feeding exogenous enzymes mixture (cellulose, xylanase, alpha-amylase and polyglacturinase) at different levels on streers performance, nutrients digestibility and rumen functions animals were fed a concentrate feed mixture UR - http://nile.enal.sci.eg/EALE/2009/EJNF/1209/3/385.pdf ER -