Abstract
Saki, A.A., Abbasinezhad, M., Ghazi, S., Tabatabai, M.M., Goodarzi, M., Ahmadi, A., Zaboli, K., Karami, O., Zamani, Z. and Mahmoudi, H. 2009. Protein pattern and urease activity of two types of soybean meal on protein digestibility and chicken performance. J. Appl. Anim. Res., 35: 45–48. The experiment was conducted on extracted (ES) and mechanical soybean meal (MS) in broiler chicken feeding. Three hundred fifty two day old Lohman chickens were placed in four treatments by 4 replicates with 22 chickens in each. Treatments included: 25 or 35% of ES or MS. Higher fiber, fat and gross energy content were obtained in MS than ES. Protein patterns observed by SDS-PAGE showed differences that indicated the specific proteins in ES compared with MS. AME, AMEn, TME and TMEn were reduced (p<0.05) in MS compared to ES. Feed intake was increased (p<0.05) in starter period (21 d) by ES treatments in comparison to MS treatments. Body weight was (P<0.05) higher in 25% ES in comparison to 25 and 35% MS in grower period (42 d). Feed conversion ratio was improved by 25% of ES compared with 35% of ES treatment (P<0.05) in 21 d. Urease activity (UA) in ES was lower than in MS. It is concluded that ES, as compared to MS, improved broiler performance.
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