Fibrolytic enzymes and phytase in diets for pigs different substrates

被引:0
作者
Avalos Castro, Mario Alberto [1 ]
Gomez Rosales, Sergio [1 ,2 ]
de Lourdes Angeles, Maria [1 ]
Brana Varela, Diego [1 ]
Mariscal Landin, Gerardo [1 ,2 ]
Cuaron Ibargueengoytia, Jose A. [1 ,2 ]
机构
[1] INIFAP, Ctr Nacl Invest Fisiol Anim, Colon 76280, Qro, Mexico
[2] Univ Nacl Autonoma Mexico, Fac Estudios Super Cuautitlan, Mexico City, DF, Mexico
关键词
Pigs; Phytase; Fibrolytic enzymes; Ileal digestibility; Fecal digestibility; Production; DISTILLERS DRIED GRAINS; GROWING-FINISHING PIGS; GROWTH-PERFORMANCE; NUTRIENT DIGESTIBILITY; SOLUBLES DDGS; CARCASS CHARACTERISTICS; APPARENT DIGESTIBILITY; LARGE-INTESTINE; PHYTIC ACID; FIBER;
D O I
暂无
中图分类号
S8 [畜牧、 动物医学、狩猎、蚕、蜂];
学科分类号
0905 ;
摘要
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 (81: 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 Heal 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.
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页码:117 / 135
页数:19
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