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Articles by Behrad Eshratkhah
Total Records ( 2 ) for Behrad Eshratkhah
  Jamshid Ghiasi Ghalehkandi , Mohammad Reza Valilu , Jalal Shayegh , Behrad Eshratkhah , Eilyad Issabeagloo and Saeed Ghaemmaghami
  Lipase is an enzyme responsible for digestion and absorption of lipids in the small intestine and effect of perlite in the diet of broilers on lipase enzyme had not been investigated. This study had been designed and performed to evaluate effect of different levels of perlite on lipase enzyme activity in small intestine of male broiler chicks. The experiment design was arranged as randomized complete bocks in 4 x 2 factorial arrangement of treatment. The 180 male broilers of Ross 308 commercial hybrid was designated into 3 groups (0, 2 and 4%). Three replicates of 20 birds were assigned to each treatment. Control treatments were fed base diet and treatment groups with the same base diet plus 2 or 4% perlite. Animals were slaughtered at 21, 28, 36 and 42 days and different segments of small intestine (at 1,10,30,50,70 and 90% of total length of the small intestine) were taken from each replicates (n=2). Lipase enzyme activity was measured and recorded. Data were analyzed by SAS (p<0.05). Data showed that intake of perlite, significantly increased Lipase enzyme activity at different weeks and sites of the small intestine of the broiler chicks (p<0.05). These data suggested that 2% perlite administration had significantly affected lipase activity as compared with control treatment.
  Shayan Ghanbari , Yahya Ebrahimnazhad , Behrad Eshratkhah and Kambiz Nazeradl
  This study investigated the effect of dietary supplementation of chromium from chromium picolinate source on the performance, carcass traits of broilers. Three hundred sixty one day old commercial male broilers (Ross 308) were randomly allocated to one of 24 floor pens in a completely randomized design with six treatment and four replicate groups and fifteen chicks per each pen. Dietary treatments consisted of 0 (control), 400, 800, 1200, 1600 and 2000 μg Cr per kg of basal diet. Feed intake, body weight gain and feed conversion ratio were measured during 1 to 21, 21 to 42 and 1 to 42 days of age. At 42 days of age two birds from each pen were selected and after weighing slaughtered and dissected manually. Carcass yield, liver, abdominal fat, pancreas, thighs and breast weight declared as percentage of live body weight. The results showed that performance of broilers was not affected by dietary supplemental chromium. Also supplementation of broiler diet didn't influence carcass traits. Nevertheless there is a non significant increase in liver and pancreas weight while increasing the Cr content of the diet. It can be concluded that chromium content of the basal starter and finisher diet and drinking water is adequate to normal requirement of broilers under such experimental conditions and supplementing of Cr may not be essential.
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