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Ileal amino acids digestibility of raw and heat-processed pea protein concentrates in broilers
Research Areas
  • Livestock
A trial was conducted to determine the apparent (AID) and standardized (SID) ileal digestibility of the AA of 2 different batches of pea protein concentrate (PPC) either raw or heat processed (HP, autoclaving at 108ºC for 8 min at 0.6 bars) as compared to soy protein concentrate (SPC) in 21-day-old broilers. Each of the 5 treatments was replicated 6 times (6 cages with 6 chicks per replicate). The two PPC and the SPC batches contained 45.6, 44.6, and 52.4% CP, 3.48, 3.29, and 2.69% total Lys, and 9.4, 9.1, and 0.2 mg/g trypsin inhibitor activity (TIA), respectively. The diets were based on corn starch and sucrose and the ingredient tested was the only source of CP (20%). In addition, a N-free diet was used in 6 extra replicates to estimate the basal ileal endogenous losses. Chicks were fed their respective experimental diets ad libitum in mash form from 18 to 21 days of age. Chicks fed the HP PPC had higher (P<0.001) AID of CP (87.61, 82.19, and 83.43%) and of most of indispensable AA (i.e, 92.14, 88.80, and 84.69% for Lys) than chicks fed the raw PPC with chicks fed the SPC being in general intermediate. The SID of most of indispensible AA was similar for the SPC and the HP PPC and higher for both (P<0.05) than for the raw PPC. An interaction between type and HP of the PPC was observed; the beneficial effects of HP on AA digestibility were more pronounced in one of the two PPC samples studied (P<0.05). The different response observed for the two PPC types with HP, was consistent with the higher reduction in TIA in one of the samples (9.4 to 2.8 mg/g vs. 9.1 to 5.8 mg/g, respectively). It is concluded that HP of PPC improves the ileal digestibility of CP and of the AA. Also, HP PPC had higher ileal digestibility of most AA than PPC. Thus, HP PPC is a good alternative to SPC in poultry diets.
99th Poultry Science Association Annual Meeting
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End Date
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Poultry Science, 89 (1): 491
  • Autor: Martina Perez Serrano (UPM)
  • Autor: Rosa Pilar Lazaro Garcia (UPM)
  • Autor: Gonzalo Gonzalez Mateos (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Producción Animal
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