Contact : Nutri-Net, Le Haras, rue Beaumanoir, 56190 Muzillac, France | tel : +33 (0) 608 229 402 | email : philippe.leny@nutri-net.fr | www.nutri-net.fr

• Tryptophanisanessentialamino-acid

• Tryptophanisalimitingamino-acidincornsoyabeandiets

• ConsumptionofTryptophanisbelowtherequirementswhen

feedconsumptionislowincaseof:

-Heatstress

-Sanitaryproblems

• Tryptophanhasnumerousimplicationsbesideprotein

synthesis:

-Itisinvolvedinappetiteregulationandpromotesthe

intake

-Itsmetabolismisinvolvedinthecontrolofimmune

responseandbodydefences

-Tryptophanhasaroleintheregulationofanimal

behaviour

L-tryptophan in Layers and breeders feedFormulating with L-tryptophan allows to lower feed protein level and save feed costs

tryptophan fUnCtions

Commerciallayernutritionalrecommendations:

• Ratiobetweentryptophanandlysine=23%expressedas

digestible

• Ltryptophanis100%digestible

LAYER

STANDARDLAYER

TRYPTOPHANDIFFERENCE

% % %

CORN 58,450 63,500 5,050

SOYA 28,500 24,000 -4,500

CACO3 8,810 8,850

VEGETABLE OIL 1,880 1,180 -0,700

MCP 1,250 1,250

DL METHIONINE 0,140 0,170 0,030

LLYSINE 0,065 0,065

LTRYPTOPHAN 0,023 0,023

SALT 0,170 0,170

NA BICARBONATE 0,300 0,300

PREMIX 0,500 0,500

TOTAL 100 100

A.A.MINI %

AMINO ACID PROFILE AS % OF DIG. LYSINE

CRUDE PROTEIN 17,70 16,20

DIG.LYSINE 0,84 0,79 0,79

DIG.THREONINE 0,61 0,55 0,55 70%

DIG.METHIONINE 0,40 0,41

DIG. MET+CYS 0,67 0,67 0,67 85%

DIG.TRYPTO 0,18 0,18 0,18 23%

DIG.ISOLEUCINE 0,71 0,72 0,63 80%

DIG.VALINE 0,79 0,72 0,71 90%DIG.ARGININE 1,09 0,97 0,87 110%

tryptophan nUtritionaL reCoMMendations

*HylineW

36after28weeksl*inred:lim

itingaminoacids

Save up to 15 usd/ton of feed If corn/soya price difference is 350 usd/ton !!!

hoW to forMULate