Nutrition Value Of High Protein Soybean Meal In Broilers

This study includes multiple experiments to compare the differences of metabolizable energy (ME) and crude protein (amino acids) between commercial dehulled soybean meal (DSBM) and high value soybean meal (HVS) in broiler.Experiment 1 Metabolizable energy, protein and amino acid digestibility evaluation of HVS in broiler-TME methodChemical analysis indicated amino acid contents, except sulf-amino acids and histidine, were higher in HVS than that in DSBM per 100 g meal. However, most amino acids, except arginine, valine and glutamic acid, were lower in HVS than DSBM if it is calculated per 100 g crude protein basis. Results of in vivo test shown that digestibility of sulf-amino acids and methionine in HVS were lower than that in DSBM (P<0.05) , but others were no difference (P>0.05).TME trial in broiler shown there was no difference of ME or crude protein (amino acids) availabilities between two meals (P>0.05). However, ME and energy availability of HVS were higher in female broilers that in males (P<0.05).Experiment 2 Metabolizable energy and protein digestibility evaluation of HVS in broiler-Traditional trial methodTraditional trial included 3 dietary treatments: control, DSBM (80% control+20% DSBM) and HVS (80% control + 20% HVS). In 2 weeks broilers and 5 weeks broilers, feed intake was no difference between 2 diets. However, the CP intake of HVS is higher than DSBM (P<0.01). Apparent ME was HVS>DSBM (P>0.05);apparent MEn was HVS>DSBM (P>0.05), ME availability was HVS>DSBM (P>0.05), apparent crude protein availability was HVS>DSBM (P>0.05).Experiment 3 Metabolizable energy evaluation of HVS in broiler- feeding trialFeeding trial was conducted in broilers at two growth phases (0~21d 和 22~42d). Control diet used DSBM (ME level was set at 9.8324/kg). HVS was added to other 5 test diets of same levels of crude protein and HVS inclusion. The ME level of test diet 1 was the same as control while the others were lower by 0.8368, 1.6736, 2.5104 and 3.3472 MJ/kg than control, respectively. The observed feed intake, daily weight gain and feed efficiency were regressed with the dietary treatments. The results indicated that ME in HVS was 1.72 MJ/kg higher than that in DSBM, or ME level in HVS was 11.55 MJ/kg.