The effect of soybean oil on the performance and blood biochemical parameters in broilers

This experiment was conducted with 288 1-d-old broiler chicks strain Ross (308) in 2008 in khorramabad. These chicks were randomly grouped into eight treatment with three replication and each of twelve chicks the treatment groups consisted of control group (without oil), containing oil group in starter period, containing oil group in grower period, containing oil group in finisher period, containing oil group in starter+grower period, containing oil group in starter+finisher, containing oil group in grower+finisher period and containing oil group in all period. According to the results, the body weight among different treatment were significant (P<0.05). The most final weight obtained from containing oil treatment in total period. There was significant difference in feed conversion among treatments as containing oil treatment in was the best feed conversion in total period and grower+finisher period. The highest production index was observed in containing oil treatment in total period. The most carcass percentage was obtained in containing oil treatment in starter period that except of containing oil treatment in total period was no significant with other treatments (P>0.05). The abdominal fat percentage among treatments no significant difference was recorded (P>0.05). the most serum total cholesterol, triglycerides and high density lipoprotein (HDL) level in containing oil treatment was observed instarter+ grower period and among treatments were no significant (P>0.05); but low density lipoprotein (LDL) was significant among treatments (P<0.05). Finally, it will be suggested that soybean oil applied in broiler diet at 11 days old after.