Standardised ileal crude protein and amino acid digestibilities in protein supplements for piglets

Publikations-Art

Zeitschriftenbeitrag

Autoren

Urbaityte R., Mosenthin R., Eklund M., Piepho H.-P., Sauer N. and Rademacher M.

Erscheinungsjahr

2009

Veröffentlicht in

Archives of Animal Nutrition

Band/Volume

63/5

Serie/Bezeichnung

Doi:10.1080/17450390903052631

Seite (von - bis)

356-378

Schlagworte

amino acids, ileal digestibility, piglet

Standardised ileal digestibilities (SID) of crude protein and amino acids (AA) originating from 24 different feed ingredients, including 11 feed ingredients produced from soybeans, seven by-products of starch processing, four whey products and two fish meals, were determined in piglets by means of the difference method. For the indispensable AA, the highest SID values were obtained in three out of four whey proteins (SID ³90% for most indispensable AA), one out of two fish meals (SID ³86%), soy protein concentrate, hydrolysed soy protein isolate (SID ³86% for most indispensable AA), and by-products of starch processing (SID ³84% for most indispensable AA). The lowest SID values were obtained in extruded soybeans and microbially fermented soy protein (SID £78% for most indispensable AA), whereas the SID values for high-protein soybean meal were intermediate (SID 80–89% for indispensable AA except for Thr). The SID values in the three enzymatically fermented soy proteins (SID 80–94% for most indispensable AA) were similar to those in high-protein soybean meal and soy protein concentrate. The results of the present study indicate that SID values of AA in feed ingredients for piglets differ considerably from those reported for grower-finisher pigs, thus there may be a need for separate feed tables for piglets