Raw material and nutrient lexicon
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Brewer's yeast
By-product of beer brewing. After completion of the mashing process, the so-called sweet wort is separated from the water-insoluble components, the spent grains, in filter presses. Hops are now added to the wort and it is boiled. After cooling, cultured yeasts of the Saccharomyces genus(S. cerevisiae; S. carisbergiensis) are added to the wort. The yeast multiplies very strongly during the onset of alcoholic fermentation. It is separated after the fermentation is completed. This is followed by a drying process (roller dryer; occasionally also spray drying process). The dried brewer's yeast is then available for feeding.
Brewer's yeast is characterised by a high crude protein content ofapprox. 45 %. In addition, its content of B vitamins, minerals and trace elements is remarkable. The protein digestibility is high. The cell walls of special brewer's yeast strains contain high levels of specific oligosaccharides that have a prebiotic effect and are specifically extracted by a few specialised companies worldwide.
Brewer's yeast |
|
Ingredients |
Content
|
|
Dry matter, g/kg |
900,00 |
|
Crude protein, g/kg |
469,00 |
|
Lysine, g/kg |
30,50 |
|
Methionine, g/kg |
6,60 |
|
Methionine |
13,10 |
|
Threonine, g/kg |
22,50 |
|
Tryptophan, g/kg |
6,10 |
|
UDP,%of |
n.a. |
|
nXP, g/kg |
n.a. |
|
RNB, g/kg |
n.a. |
|
Crude fibre, g/kg |
23,00 |
|
Crude fat, g/kg |
14,00 |
|
Sugar, g/kg |
12,00 |
|
Starch, g/kg |
0,00 |
|
Starch resistance |
0,00 |
|
resistant starch |
0,00 |
|
NDForg, g/kg |
n.a. |
|
ADForg, g/kg |
n.a. |
|
NFC, g/kg |
n.a. |
|
Structural value |
n.a. |
|
Crude ash, g/kg |
53,00 |
|
ME, MJ/kg |
12,51 |
|
ME, MJ/kg |
n.a. |
|
ME, MJ/kg |
n.a. |
|
NEL, MJ/kg |
n.a. |
|
Calcium, g/kg |
2,60 |
|
Phosphorus, g/kg |
14,80 |
|
digestible phosphorus |
7,40 |
|
Sodium, g/kg |
1,32 |
Sources: DLG feed value tables for pigs; DLG feed value tables for ruminants; Rechenmeister 2000 (Landwirtschaftskammer Westfalen-Lippe); CVB Veevoedertabel; DLG-Information 2/2001 Structure and carbohydrate supply of the dairy cow
