The evaluation of the effect of partial replacing protein of sun flower meal (SFM) by protein of azolla meal in concentrate feed mixture (CFM) on growth performance, digestibility, feed intake and conversion and economic feed efficiency of growing lambs it was the aim of the present study. 15male crossbred (Osimi X Flelandi) were divided into 3 equal groups T1, T2 and T3 fed on CFM containing 0, 10 and 20% azolla meal replacing 0,25 and 50%protein of SFM respectively. Results showed that, integrated azolla meal with experimental rations resulted in decreasing the digestibility of DM,OM,CP and NFE and feeding value as TDN and DCP with R2 and R3 rations compared to those of R1 which had highest means (65.61,72.08, 69.69, 77.45,69.81and 8.37,respectively). While, digestion coefficients of CF and EE increased with integrated azolla in rations with highest value in R3.T1 recorded the highest average of final body weight (40 kg) and T3 recorded the lowest average (38.4kg) with insignificant differences among tested groups. Also total body weight gain and average daily gain decreased from T1 up to T3 with insignificant differences among experimental groups. Economic feed efficiency(%) recorded the best value(2.28%) in T2 which had 10% azolla meal followed by T3 which had 20% azolla meal and the lower value (2.15) in T1. The results concluded that dietary insert of azolla meal up to level 10% instead of SFM had positive impact on economic feed efficiency of growing crossbred lambs without any adverse effect on the performance of the animals.

ABESTRACTThis study was conducted to investigate the effect of inclusion green bean vines hay (GBVH) in replacing with clover hay (CH) in diets of Damascus goat does on nutrients digestibility, milk yield, milk composition, some blood parameters and yoghurt quality. Twenty-five lactating Damascus goat does with an average live body weight of 42.8±1.5kg at the 3 rd and 4 th parities were divided randomly into five similar groups (5 each) where each group received one of 5 experimental rations. The first group was received concentration feed mixture (CFM) and (CH)(50:50%) as control ration (R0). Meanwhile, the tested rations R1 , R2 , R3 and R4 were received rations containing 25, 50, 75 and 100% GBVH in replacing CH in control ration, respectively. Results revealed that the chemical composition of both CH and GBVH is nearly similar respecting, CP and CF%. No significant differences between control ration (R0) and tested rations (R1, R2 and R3) in digestion coefficients of (DM, OM, CP, CF, EE, NFE%) as well as the feeding values (TDN and DCP). Inversely the tested rations of the highest level of GBVH (R4) almost had the lowest values of nutrients digestibility and TDN. While DCP values did not significant affected by the dietary treatments being the highest value was recognized with R3. Actual milk and 4%-FCM yields were significant higher with the 75% GBVH ration (R3) and insignificant higher with the tested rations R1and R2, than those of control ration (R0). But the highest level of 100% GBVH ration (R4) had produced the lowest amount of milk among the four tested rations. Concerning milk composition, most of tested rations significant increased fat percentage compared with control one, while inverse trend was observed with milk protein percentage among treatments. Slightly improvement respecting milk TS was observed with the most tested rations compared with control ration with significant differences among some tested rations (R2 and R4) with control (R0). No significant differences among experimental rations regarding all offspring performance measurements, with highest values of weight at birth, weight at 1 st month, weight at 2 nd month, daily gain from birth to 1 st month and daily gain from birth to 2 nd month which recorded (4.5kg, 10.6kg, 14.2kg 203.13g and 161.56g) at R2, respectively. At the end of the experimental period, plasma total protein was unaffected significantly (P<0.05) by the experimental rations with the highest value (9.43g/dl) was occurred with R2 and the lowest one (6.50g/dl) was with R3. Fat and TS contents were somewhat improved with tested rations in comparison with control ration regarding the produced yoghurt. Also, R1 and R3 have good organoleptic properties of fresh yoghurt made from goat milk. Results indicated that the GBVH replacement in (R1 up to R4) reflected superiority over the control ration. Yoghurt prepare from milk produced from R1 and R3 groups had higher curd tension and lower cured syneresis than those of the other treatments. Feed conversion and economic efficienc...

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