Effects of origins and micronization of soybean meal on productive performance in weanling pigs | Influencia de la micronización y el origen de la harina de soja en los rendimientos productivos en lechones destetados
2011
Berrocoso, J.D., Universidad Politécnica de Madrid (España). Dept. de Producción Animal | Monteserín, E.A., Universidad Politécnica de Madrid (España). Dept. de Producción Animal | Cámara, L., Universidad Politécnica de Madrid (España). Dept. de Producción Animal | Serrano, M.P., Universidad Politécnica de Madrid (España). Dept. de Producción Animal | Lázaro, R.P., Universidad Politécnica de Madrid (España). Dept. de Producción Animal | Mateos, G.G., Universidad Politécnica de Madrid (España). Dept. de Producción Animal
A study was conducted to test the effect of crude protein (CP) content of the soybean meal (R-SBM, 44% CP vs. HP-SBM 49% CP) and fine grinding (micronization) of the HP-SBM on growth performance of piglets from 27 to 56 days of age. Six pelleted diets with similar nutrient content but based on different sources of SBM meal that supplied 6.5% of dietary CP in all cases, were used. There were a negative control diet that included 15.8 % of a R-SBM and a positive control diet that included 10 % soy protein concentrate (SPC) in substitution of the R-SBM. The other 4 diets were arranged factorially with two sources of HP-SBM of USA or Argentinean origin and two geometric mean diameter of the HP-SBM (ground, 881 microm vs. micronized, 60 microm). Each treatment was replicated 8 times (6 pigs per pen). From 27 to 56 d of age, diet did not affect growth performance of piglets. Piglets fed the micronized HP-SBM tended to have better G:F (0.91 vs. 1.00; P<0.1) from 28 to 35 d of age and higher ADFI (367 g vs. 347 g; P=0.06) from 35 to 42 d of age than piglets fed the ground HP-SBM. It is concluded that inclusion of SPC in the diet in substitution of R-SBM or HPSBM did not benefit growth performance at any age. Micronization of the HP-SBM improved G:F during the first wk post-weaning. The utilization in piglet diets of added value soy products presents little advantage in terms of growth performance over the use of highprotein SBM.
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