فهرست مطالب ستاره عابدی

This study was done to investigate the effect of pomegranate peel extract on growth performance, blood biochemical indices, intestinal morphology and meat quality of broiler fed diet-contained soybean oil. 120 male broilers were used in the form of a completely randomized design with 3 treatments, 4 repetitions and 10 chicks. Experimental diets were three levels of zero, 300 and 600 mg/kg of pomegranate peel extract (PPE). Pomegranate peel extract had no effect on performance traits including feed intake, body weight and feed conversion ratio at starter and finisher phases, but in the grower period, the levels of 300 and 600 PPE reduced feed intake (from 928 to 777 g) and feed conversion ratio (from 1.77 to 1.31; P <0.05) compare to control. The breast percentage increased from 19.78 in control to 21.95 at the level of 600 PPE and the percentage of abdominal fat decreased from 1.93 in control to 1.27 at the level of 600 PPE (P <0.05). The PPE at levels of 600 reduced concentration of cholesterol (183.68 to 137.15 mg/dl) and LDL (95.63 to 32.93 mg/dl) and the enzyme activity of aspartate dehydrogenase (263.8 to 204.28) compare to control. The villus height (from 1026.88 to 1155.12) and the villus height to crypt depth ratio (5.04 to 5.6) were higher at the 600 PPE compared to the control. The concentration of Malondialdehyde in meat decreased at 15 and 30 days after slaughter with an increase in PPE compared to control.

The aim of this study was toinvestigate the effect of pomegranate peel extract (PPE) on the growthperformance, carcass characteristics, blood indices, intestinal morphology andmeat stability of broiler chickens. A total of 120 one-day-old Ross 308chicks were used in this study in a completely randomized design with threetreatments each replicated four times. The experimental treatments included were:0, 300 and 600 mg PPE/kg. Allstarter rations had four percentages of canola oil and grower and finisherdiets had six percentages of canola oil. The results showed that the PPE had nosignificant effect on performance of broiler chicks, including feed intake,body weight and feed conversion ratio. Pomegranate peel extracts (600 mgPPE/kg) increased the relative weight of bursa of fabricus (0.22 vs.0.11%) and decreased abdominal fat (0.92 vs. 1.93%) as compared tocontrol. The 600 PPE diet had lower concentration of serum cholesterol (147.95 vs.155.78 mg/dL), and LDL (44.45 vs. 53.36 mg/dL) than control diet (P<0.05). Compared to control group, thelevel of 600 PPE reduced the activity of lactatedehydrogenase (1111 vs. 2182 μL) and aspartate aminotransferase (210 vs.239 u/L). The stability of the meat during storage (0.85 vs. 0.99 ng/g) increasedin birds fed diets contained PPE as compared with control group. The birdsreceived PPE had higher jejunal villus height (1245 vs. 1027 μm) and thecrypt depth to the villus height (6.74 vs. 5.05) compared to the control.It is concluded that PPE supplementation at the level of 600 mg/kg of diet improvedmeat stability and morphology of jejunum and reduced the blood cholesterol ofbroiler chickens.