Abstract

This study was conducted in the Animal Farm of the College ofAgriculture – University of Basrah. A total of 28 Arabi male lambs were used,with average age of 5 months and mean body weight of 21. 1.33 Kg.Lambs were distributed equally and randomly into 7 nutrition rations toconduct growth and fattening of Arabi lambs which lasted for 90 days. Theexperimental rations were as follows:Ration-1- (control) - fed on concentrate ration only by 3% of body weight.Ration-2- fed on 90% of the control ration and 10% of ground date stonessubstituted for the barley.Ration-3- lambs fed on the ration 2 with addition of3 grams of bakery yeast (Saccharomyces cerevisiae) / Kg of feed. Ration-4-fed on 80% of the control ration with substitution of 20% of date stones forbarley. Ration-5- lambs fed on the ration 4 with addition of 3 grams of bakeryyeast per Kg of feed. Ration-6- fed on 70% of the control ration and 30% ofdate stones. Ration-7- lambs fed on the ration 6 with addition of 3 grams ofbakery yeast per Kg of feed.

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