الفهرس | Only 14 pages are availabe for public view |
Abstract A six weeks feeding trial was conducted to evaluate the effect of replacement of soybean meal (SBM) with cottonseed meal (CSM) with or without addition of ferrous sulphate in white Pekin ducks. One hundred one-day old white Pekin ducks were divided into five groups. Group (1) fed standard basal diet (control), group (2) fed diet where 20% of SBM was replaced by CSM (CSM20), group (3) fed diet 2+ ferrous sulphate (CSM20+), group (4) fed diet where 41% of SBM was replaced by CSM (CSM41) and group (5) fed diet 4+ferrous sulphate(CSM41+). On 21 and 42 days of age blood samples were collected from different groups. Replacement of 20% or 41% of SBM by CSM had no encouraging effect on the growth performance. Furthermore, there were a significant decrease in red blood cells count, hemoglobin, packed cell volume, total protein and plasma reduced glutathione in CSM20 and CSM41 groups compared with control group. Meanwhile, there were significant increases in serum ALT and AST activity in the same groups. Addition of ferrous sulphate to (CSM20+ and CSM41+) alleviates the adverse effect of gossypol on growth performance, blood picture and organ functions. |