Determinación de la digestibilidad de la proteína, aminoácidos y energía de canola integral en cerdos en crecimiento Determination of the digestibility of the protein, amino acids and energy of full fat canola in growing pigsGerardo Mariscal-Landín a *, Erika Ramírez Rodríguez a RESUMENPara evaluar el uso de canola integral en la alimentación de cerdos se realizaron dos experimentos. En el primero se evaluó la digestibilidad aparente y estandarizada a nivel ileal (DAI y DEI) de la materia seca (MS), proteína (PC), aminoácidos (AA) y energía (E); en el segundo se evaluó la digestibilidad aparente fecal (DAF) de la PC y E. En ambos experimentos se evaluaron dos dietas de canola integral, una con canola integral molida más almidón de maíz (CIM-AM) y otra con canola integral y sorgo molidos juntos (CISM). Los resultados muestran que la DAI de la MS (71.4), PC (54.9) y E (67.6) fue similar (P>0.10) en ambas dietas. La DAI y DEI difirieron en los aminoácidos alanina y leucina (P<0.001), fenilalanina, ácido glutámico, histidina y valina (P<0.01), y la DEI de serina (P<0.05). La mayor digestibilidad se observó en la dieta CISM. La DAF de la MS y PC (P<0.001) y de E (P<0.01) fueron menores en la dieta CISM. Se concluye que la DAI de la proteína y aminoácidos, así como la DAF de la energía, son bajas en la canola integral molida, lo que reduce la posibilidad de incluirla en dietas para cerdos. Sin embargo, la molienda de canola integral junto con el sorgo mejoró la digestibilidad aparente de los aminoácidos de la mezcla, lo que permitiría utilizar esa mezcla como un ingrediente en la formulación de raciones. PALABRAS CLAVE: Canola integral, Energía, Aminoácidos, Digestibilidad, Cerdos. ABSTRACTTwo experiments were carried out to evaluate in pigs the use of full-fat canola. In the first one apparent and standardized ileal digestibility (AID and SID) of dry matter (DM), crude protein (CP), amino acids (AA) and energy (E) were evaluated in twelve pigs. In the second one apparent fecal digestibility (AFD) of CP and E were evaluated in eight pigs. In both experiments, full-fat canola (FFC) was used to prepare two diets, a full-fat canola milled and corn starch diet (FFCM-CS), and another with full-fat canola and sorghum milled together (FFCSM). The results show that AID of DM (71.4), CP (54.9) and E (67.6) was similar (P>0.10) between the two diets. SID and AID differ in alanine and leucine (P<0.001), phenylalanine, glutamic acid, histidine and valine (P<0.01); and The SID of serine (P<0.05). In all cases, the higher digestibility was observed in the FFCSM diet. The AFD of DM and CP (P<0.001), and E were lower (P<0.01) in FFCSM diet than in FFCM-CS diet. It is concluded that AID and SID of protein and amino acids, as well as AFD of energy, are low in full-fat canola, reducing the possibility of its inclusion in diets for pigs. However, the mix of full-fat canola and sorghum milled together improved apparent ileal digestibility of amino acids allowing its use as an ingredient in the formulation of rations.
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