Castro M.A.A.,National Research Center en Fisiologia Animal |
Rosalesa S.G.,National Research Center en Fisiologia Animal |
Rosalesa S.G.,National Autonomous University of Mexico |
De Lourdes Angeles M.,National Research Center en Fisiologia Animal |
And 5 more authors.
Revista Mexicana De Ciencias Pecuarias | Year: 2011
The objective of the study was to evaluate the addition of phytase (P) and pectinase, glucanase and hemicellulose (PGH) activities on sorghum-soybean- canola based diets, and a xylanase (X) on diets with dry distillers grain with solubles (DDGS) on the ileal and fecal digestibility of nutrients (Exp 1) and the growth performance (Exp 2) of growing-finishing pigs. In Exp 1, two Basal diets were formulated (B1: sorghum-soybean-canola and B2: sorghum-soybean-canola + DDGS) and the treatments were: 1) B1+P, 2) B1+P+PGH, 3) B2+P, 4) B2+P+PGH, 5) B2+P+X, and 6) B2+P+PGH+X. Exp 2 included four treatments: 1) Positive control (sorghum-soybean-canola) with normal energy; 2) Same as 1, but low in energy; 3) Same as 2 +F+PGH, 4) Same as 3 +GSDS +X. In Exp. 1, the ileal energy digestibility was improved (P<0.05) with +P+PGH, +P+X and +P+PGH+X and the fecal energy digestibility was improved (P<0.05) with +P+X. The PGH released 122 kcal at the ileal level and the X released 147 and 132 kcal of DE/kg of feed at the ileal and fecal level. In Exp 2, the feed efficiency between the Positive control and the Low-energy +P+PGH Treatment was similar (P<0.01), but the Low-energy +P+PGH Treatment had higher (P<0.01) energetic efficiency. The energetic value of DDGS was improved with the addition of P, PGH and X, but the growth response observed in this trial was not consistent.