Influence of source of starch and protein of the diet on nutrient digestibility and productive performance of young pigs | Influencia de la fuente de almidón y proteína del pienso sobre la digestibilidad de los nutrientes y rendimiento productivo de lechones
2009
Parera, N., Universidad Politécnica de Madrid (España). Escuela Técnica Superior de Ingenieros Agrónomos | Serrano, M.P., Universidad Politécnica de Madrid (España). Escuela Técnica Superior de Ingenieros Agrónomos | Valencia, D.G. | Lázaro, R., Universidad Politécnica de Madrid (España). Escuela Técnica Superior de Ingenieros Agrónomos | González Mateos, G., Universidad Politécnica de Madrid (España). Escuela Técnica Superior de Ingenieros Agrónomos
An experiment was conduced to compare 3 sources of starch (cooked maize, cooked rice, and micronized pea starch) and 2 sources of vegetable protein (soya protein concentrate, SPC and pea protein concentrate, PPC) of the diet on the coefficient of total tract apparent digestibility (CTTAD) of nutrients and productive performance of piglets from 29 to 53 d of age. There were 6 treatments arranged factorially with 3 starch and 2 protein sources. Each treatment was replicated 6 times (6 pigs/replicate). Pea starch and PPC were obtained by dehulling pea seeds followed by micronization and air classification. At 36 d of age the CTTAD of organic matter and gross energy was higher for cooked rice than for cooked maize with micronized pea starch being intermediate (P<0.001). The CTTAD of protein was higher for SPC than for PPC (P<0.01). From 29 to 53 d of age piglets fed cooked rice ate more and grew faster than piglets fed micronized pea starch, with those fed cooked maize being intermediate (P<0,001). Micronized pea starch resulted in similar performance to that obtained with cooked maize. The inclusion of PPC reduced slightly protein digestibility but had no effects on piglet performance. The inclusion of cooked rice is recommended in piglet diets. Protein and starch fractions of peas can be used successfully in substitution of SPC or cooked maize in diets for piglets.
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