An-Najah Staff

A total of 210 twenty-day-old broiler chicks were used in this programme to investigate the performance, feed intake, digestibility and visceral organ mass of broiler chicks fed with high level of olive pulp supplemented with two antibiotics: streptomycin and tylosin. The two antibiotics were added to supply 150 mg/kg of the active ingredient. Chicks which consumed the medicated dietshad more (p,0.05) gain compared to chicks which consumed the basal diet. However, streptomycin caused more (p,0.05) gain compared to tylosin. Antibiotics had no effect on feed intake. The chicks that consumed the antibiotics had heavier (p0.05) weights of edible, inedible organs and small intestine but lower weights of large intestine and cecum. The digestibility of dry matter, crude protein and nitrogen free extract increased (p0.05) in chicks fed with the medicated diets compared to the chicks fed with the basal diet. It is concluded that antibiotic supplementation had a positive effect on chick's performance and digestibility

A total of 210 twenty two- day-old broiler chicks were used in this programme to investigate the performance, feed intake, digestibility and visceral organ mass of broiler chicks fed with high level of olive pulp supplemented with two antibiotics: streptomycin and tylosin. The two antibiotics were added to supply 150 mg/kg of the active ingredient. Chicks which consumed the medicated diets had more (p<0.05) gain compared to chicks which consumed the basal diet. However, streptomycin caused more (p<0.05) gain compared to tylosin. Antibiotics had no effect on feed intake. The chicks that consumed the antibiotics had heavier (p<0.05) weights of edible, inedible organs and small intestine but lower weights of large intestine and cecum. The digestibility of dry matter, crude protein and nitrogen free extract increased (p<0.05) in chicks fed with the medicated diets compared to the chicks fed with the basal diet. It is concluded that antibiotic supplementation had a positive effect on chick's performance and digestibility.

This experiment was conducted to investigate the effect of microbial phytase supplementation on broilers performance, nutrient digestibility, carcass cuts and body status of Ca and P. A total of 200 day-old Cobb-500 chicks were used in the experiment. Birds were partitioned into five experimental groups of 40 birds each treatment was composed of 4 replicates with 10 birds in each. The control group was fed a commercial starter and finisher diet. The second treatment group was fed a phosphorus deficient diet, while the third, fourth and fifth treatments groups were fed a phosphorus deficient diets plus the microbial phytase. Phytase enzyme was incorporated at levels 1000, 2000 and 3000 PU/kg feed for the last three treatments, respectively. In the last week of experimment, four birds from each replicate were used in metabolic trial. However, at time of termination of the experiment, the same birds were killed for carcass cuts and tibia ash content investigations. Results of the experiment showed that the addition of phytase enzyme to P- deficient diets significantly improved (P<0.5) broilers performance. Howeever, feed intake, feed conversion ratio and tibia minerals were significantly increased (P0.05) in birds fed P- deficient diets supplemented with phytase. Phytase supplemmentation had no significant effect on carcass cuts and dressing percent compared to birds fed the low P diets. Also, results of this investigation showed that phytase enzyme increased (P0.05) the digestibility of dry matter, crude protein and ash. 

A total of 210 twenty two- day-old broiler chicks were used in this programme to investigate the performance, feed intake, digestibility and visceral organ mass of broiler chicks fed with high level of olive pulp supplemented with two antibiotics: streptomycin and tylosin. The two antibiotics were added to supply 150 mg/kg of the active ingredient. Chicks which, consumed the medicated diets had more (p<0.05) gain compared to chicks which consumed the basal diet. However, streptomycin caused more (p<0.05) gain compared to tylosin. Antibiotics had no effect on feed intake. The chicks that consumed the antibiotics had heavier (p<0.05) weights of edible, inedible organs and small intestine but lower weights of large intestine and cecum. The digestibility of dry matter, crude protein and nitrogen free extract increased (p<0.05) in chicks fed with the medicated diets compared to the chicks fed with the basal diet. It is concluded that antibiotic supplementation had a positive effect on chick's performance and digestibility. KEYWORDS: antibiotics; olive pulp; chicks; performance; digestibility; visceral organs

This experiment investigated the effect of feeding different levels of sesame oil cake on the intake and digestibility of DM, CP, crude fiber, and crude fat in Awassi fattening lambs. Sesame oil cake was incorporated into lamhs’ rafions at levels of 10 and 20% to replace similar percentages of barley and soybean. The results showed that the high level of sesame oil cake inclusion decreased DM and protein intake, however, it increased (P<0.05) crude fiber, crude fat and copper intake. Addition of 20% sesame oil cake also increased (P<0.05) the digestibility of CP and crude fiber. Sesame oil cake resulted in more daily gain and better feed conversion efficiency compared to control. The results indicated that addition of sesame oil cake to Awassi lambs’ rations had some economical advantages in digestibility and performance compared to traditional fattening rations. The higher cost of gain was in lambs fed the commercial fattening feed. Sesame oil cake reduced (P<0.05) cost of gain. This was because of the low costs of rations incorporated with sesame oil cake.