Apparent and standardized ileal digestibility of amino acids in yeast extract and spray dried plasma protein by weanling pigs

Abstract

. 2007. Apparent and standardized ileal digestibility of amino acids in yeast extract and spray dried plasma protein by weanling pigs. Can. J. Anim. Sci. 87: 381-383. The objective of this experiment was to measure the apparent (AID) and standardized (SID) ileal digestibility of crude protein (CP) and amino acids (AA) in yeast extract and spray dried plasma protein (SDPP) by weanling pigs. A casein-based diet, a casein-SDPP diet, a casein-yeast extract diet, and a N-free diet were formulated and fed to weanling pigs. Values for AID and SID in yeast extract and SDPP were calculated using the difference procedure. Results showed that the AID for CP and all AA with the exception of Cys and Ser are similar between yeast extract and SDPP. Likewise, no differences in SID for CP or AA were observed between yeast extract and SDPP. The current data demonstrate that both yeast extract and SDPP contain protein that is relatively well digested by young pigs. Mots clés: Acides aminés, digestibilité, porcs, sang séché par pulvérisation, extrait de levure 381Spray dried plasma protein (SDPP) is a commonly used protein source in diets fed to weanling pigs (Cho et al. 1997;Chae et al. 1999). It is produced by adding an anticoagulant to the blood from slaughtered animals. The erythrocytes are separated from the plasma by centrifugation and the plasma obtained is then spray-dried to produce the final product called SDPP (Howell and Lawrie 1983). An alternative nonanimal protein source that is currently being introduced to the market is yeast extract, which is derived from yeast cell contents by removing the cell wall from the yeast cells (Tibbets 2002). Yeast extract contains 48.8% crude protein (CP) and relatively high quantities of amino acids (AA) and nucleotides. The inclusion of yeast extract in diets fed to weanling pigs has been reported to improve pig performance and intestinal health (Maribo 2003;Carlson et al. 2005). It was also observed that subsequent grower and finisher performance was improved for pigs that were fed yeast extract during the nursery phase (Carlson et al. 2005). As a consequence, there is considerable interest in using SDPP and yeast extract in diets fed to weanling pigs. However, apparent (AID) and standardized (SID) ileal digestibility values for CP and AA in yeast extract have not been reported. Digestibility values for AA in SDPP have been reported on a few occasions (Cho et al. 1997;Chae et al. 1999;Gottlob et al. 2006), but these values were measured in growing pigs, and it is not known if they are also representative of values for AID and SID in weanling pigs. It was, Urbana IL, 61801 (phone: 217-333-0013; fax: 217-333-7088; email: hstein@uiuc.edu Abbreviations

Ileal amino acid digestibility in egg from hyperimmunized-hens fed to weaned pigs and piglet response to diets contain egg products

“…The AID and SID values for N and AA in SDPP were comparable to those reported by Mateo and Stein (2007). Thus, the SDPP fed in the current study represented the SDPP well.…”

Amino acid digestibility of a yeast-derived protein source and gut endogenous losses in newly weaned pigs

“…Inclusion of YP in weaned pig diets was similarly effective as spray-dried plasma in increasing feed intake and daily gain of piglets over unsupplemented control diets (Carlson et al 2005). Mateo and Stein's (2007) results that the standardized ileal digestibility of AA in YP in pigs 33 to 56 days of age was similar to that of spray-dried plasma may not be applicable to the immediate post-weaning period. To obtain digestibility data in weaned pigs, ileal digesta can be sampled from slaughtered animals; this method was shown to yield similar results to digesta collection from T-canulas (Donkoh et al 1994).…”

Inclusion of yeast-derived protein in weanling diet improves growth performance, intestinal health, and anti-oxidative capability of piglets

“…Exogenous nucleotides have been demonstrated to maintain the function of rapidly dividing tissues, stimulate innate immunity, and reduce the incidence of enteric diseases (Uauy 1994;Sauer et al 2011). Nutritionally, furthermore, it has been reported that YP had comparable nutrients digestibility as SDPP (Mateo and Stein 2007).…”

“…Yeast-derived protein (YP), enriched with free amino acids, short chain peptides, nucleotides, and inositol (Pereira et al 2012) has been proposed to be a superior protein ingredient as an alternative to SDPP for weaning pigs. As a mixture of yeast cell contents by removing the cell wall from yeast cells (Chae et al 2001), YP possesses similar apparent (AID) and standardized (SID) ileal digestibility of amino acids with SDPP for weanling piglets (Mateo and Stein 2007;Moehn et al 2010). In addition, the bioactive components of YP (nucleotides, etc.)…”