Schumacher, Valérie and Kehraus, Saskia (2025) Eine einfache und schnelle Labormethode zur Schätzung des standardisiert praecaecal verdaulichen Rohproteins in Geflügelfutter. [A simple and fast laboratory method to estimate the standardised precaecally digestible crude protein in feed for poultry.] In: Eine einfache und schnelle Labormethode zur Schätzung des standardisiert praecaecal verdaulichen Rohproteins in Geflügelfutter, Eigenverlag: Institut für Tierernährung, Tierische Lebensmittel und Ernährungsphysiologie, Wien, Österreich, 23. BOKU-Symposium Tierernährung.
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Summary in the original language of the document
Die Labormethode basiert auf der Annahme, dass bei Geflügel das Neutral-Detergenzien-unlösliche Rohprotein (NDUXP) und das Säure-Detergenzien-unlösliche XP (ADUXP) im Dünndarm weitgehend unverdaulich ist. Hingegen steht dem Tier das ND- bzw. AD-lösliche XP (NDLXP bzw. ADLXP) im Dünndarm zur Verfügung, welches wie folgt berechnet werden kann:
NDLXP = XPFutter – NDUXP bzw. ADLXP = XPFutter - ADUXP
Die hier beschriebene Vorgehensweise ähnelt derjenigen für die Proteinbewertung beim Pferd (GfE 2014) und beim Schwein (Schumacher et al. under review 2024).
Summary translation
A practically, simple and fast laboratory method to estimate the standardised precaecally digestible crude protein (spcvXP) in feedstuffs, which was validated in a previous project for pigs (Schumacher et al. under review 2024), is now tested and calibrated for its applicability in feedstuffs for poultry. The overall objective of the project is to contribute to an adequate XP supply of poultry and to support performance and animal health as well as to avoid nitrogen surpluses, which are harmful for the animal and the environment. This can be achieved by a precise protein evaluation of the feed. According to GfE, protein evaluation has been based on spcvXP since 2006. Up to now, this has been determined in vivo using an invasive method. In vitro, spcvXP is often determined using a time-consuming enzymatic method (Boisen and Fernandez 1995), which has not been well established so far. Therefore, a rapid laboratory method for the estimation of spcvXP in poultry was developed. On the lines of the XP fractionation procedure for ruminant feeds the neutral detergent insoluble XP (NDUXP) or acid detergent insoluble XP (ADUXP) is measured. Based on the determination of NDUXP or ADUXP, the ND-soluble or AD-soluble XP is calculated and used to derive equation to estimate spcvXP.
| EPrint Type: | Conference paper, poster, etc. |
|---|---|
| Type of presentation: | Poster |
| Keywords: | digestibility, chemical analysis, poultry, FKZ 21EPS007, BÖL, BOEL |
| Agrovoc keywords: | Language Value URI English digestibility http://aims.fao.org/aos/agrovoc/c_2266 English chemical analysis http://aims.fao.org/aos/agrovoc/c_f5fd1a6c |
| Subjects: | Animal husbandry > Feeding and growth Animal husbandry > Health and welfare Animal husbandry > Production systems > Poultry |
| Research affiliation: | Germany > Federal Organic Farming Scheme - BOEL > Animals > Animal Feeding Germany > Federal Agency for Agriculture and Food - BLE - Protein Strategy Germany > University of Bonn > Institute of Animal Science > Group of Animal Nutrition |
| ISBN: | 978-3-900397-18-0 |
| Related Links: | https://www.itw.uni-bonn.de/tierernaehrung/de/publikationen-1, https://www.bundesprogramm.de |
| Deposited By: | Kehraus, Dr. Saskia |
| ID Code: | 55415 |
| Deposited On: | 02 Apr 2025 12:17 |
| Last Modified: | 02 Apr 2025 12:17 |
| Document Language: | German/Deutsch |
| Status: | Published |
| Refereed: | Peer-reviewed and accepted |
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