Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
Correlation between ileal digestibility of amino acids and chemical composition of soybean meals in broilers at 21 days of age
Year:2012
Research Areas
  • Cattle ranch and fishes,
  • Agriculture,
  • Engineering
Information
Abstract
The correlations between chemical composition and coefficient of standardized ileal digestibility (CSID) of crude protein (CP) and amino acids (AA) were determined in 22 soybean meal (SBM) samples originated from USA (n = 8), Brazil (BRA; n = 7) and Argentina (ARG; n = 7) in 21-day old broilers. Birds were fed a commercial maize-SBM diet from 1 to 17 days of age followed by the experimental diets in which the SBM tested was the only source of protein (205 g CP/kg) for three days. Also, in vitro nitrogen (N) digestion study was conducted with these samples using the two-step enzymatic method. The coefficient of apparent ileal digestibility (CAID) of the SBM, independent of the origin, varied from 0.820 to 0.880 for CP, 0.850 to 0.905 for lysine (Lys), 0.859 to 0.907 for methionine (Met) and 0.664 to 0.750 for cysteine (Cys). The corresponding CSID values varied from 0.850 to 0.966 for CP, 0.891 to 0.940 for Lys, 0.931 to 0.970 for Met and 0.786 to 0.855 for Cys. The CSID of CP and Lys of the SBM were positively correlated with CP (r = 0.514; P < 0.05 and r = 0.370; P = 0.09, respectively), KOH solubility (KOH sol.) (r = 0.696; P < 0.001 and r = 0.619; P < 0.01, respectively), trypsin inhibitor activity (TIA) (r = 0.541; P < 0.01 and r = 0.416; P = 0.05, respectively) and reactive Lys (r = 0.563; P < 0.01 and r = 0.486; P < 0.05) values, but no relation was observed with neutral detergent fiber and oligosaccharide content. No relation between the CSID of CP determined in vivo and N digestibility determined in vitro was found. The CSID of most key AA were higher for the USA and the BRA meals than for the ARG meals. For Lys, the CSID was 0.921, 0.919 and 0.908 (P < 0.05) and for Cys 0.828, 0.833 and 0.800 (P < 0.01) for USA, BRA and ARG meals, respectively. It is concluded that under the conditions of this experiment, the CSID of CP and Lys increased with CP content, KOH sol., TIA and reactive Lys values of the SBM. The CSID of most limiting AA, including Lys and Cys, were higher for USA and BRA meals than for ARG meals.
International
Si
JCR
Si
Title
Animal Feed Science and Technology
ISBN
0377-8401
Impact factor JCR
1,691
Impact info
Volume
178
10.1016/j.anifeedsci.2012.09.002
Journal number
From page
103
To page
114
Month
SIN MES
Ranking
Participants
  • Autor: Paloma Garcia Rebollar (UPM)
  • Autor: M. FRICKA (UPM)
  • Autor: M.P. SERRANO (UPM)
  • Autor: D.G. VALENCIA (UPM)
  • Autor: WOLFGANG FICKlER (HANAU)
  • Autor: G.G. MATEOS (upm)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Ingeniería de la Calidad Alimentaria
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