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Articles by Shirin Honarbakhsh
Total Records ( 2 ) for Shirin Honarbakhsh
  Shirin Honarbakhsh , Mojtaba Zaghari and Mahmood Shivazad
  This research tried to examine the effect of exogenous betaine as an osmoprotectant in broiler chicks under water salinity stress. An in vivo CRD experiment, in factorial arrangement of dietary betaine supplementation (0.000, 0.075, 0.150 and 0.225%) and levels of water TDS (375, 1375 and 2375 mg LG1) was investigated on 576 day-old male chicks which were distributed in four replicates. In the first 10 days they were raised without added betaine and TDS of their water was 375 mg LG1. The main experiment started at 11 days after unified the body weight mean of all floor pens. Betaine decreased packed cell volume (p< 0.05). Water consumption (28 and 42 days) and excreta moisture (28 days) were increased by elevating the level of water salinity (p< 0.01). Interaction between dietary betaine and saline water were significant on plasma osmolarity at 28 days and epithelia osmolarity of duodenum. Epithelia osmolarity was decreased from duodenum to ileum. It seems that body homeostatic regulation system defends against changes of blood osmotic pressure parameters and increased total volume of blood.
  Shirin Honarbakhsh , Mojtaba Zaghari and Mahmood Shivazad
  The effect of saline water and dietary betaine on growth performance of 576 male broiler chicks from first to 42 days and on carcass composition (include: percentages of carcass, sartorial, breast, liver, abdominal fat and heart) of a sub sample of 96 birds was studied in a CRD experiment. Three levels of total dissolved solids (375, 1375 and 2375 mg L-1) and 4 levels of dietary betaine supplementation (0.000, 0.075, 0.150 and 0.225%) were used in this trial. Feed was provided ad libitum and water was in free access. Data showed that betaine supplementation increased BW and improved FCR. Water salinity promoted BW at whole period, increased feed intake (11 to 21 and 29 to 42 days) and also improved FCR in grower and finisher periods (p<0.01). Breast weight was increased by consuming higher levels of total dissolved solids in water (p<0.01). The data imply that betaine supplementation maybe improved digestion and absorption conditions of the gastrointestinal tract and amended the usage of nutrients. These observations corresponded with results of FCR. It shows that betaine maybe involved in protection of intestinal epithelium against osmotic disturbance (saline water).
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