Poultry International - December 2017 - 24

24 ❙ PoultryInternational

3 tools to control reactivated
Salmonella in poultry feed
Treating poultry feed during processing can help to lower Salmonella
contamination and reduce the risk of reactivation.
EVELIEN VAN DONSELAAR & PAUL KOOLEN

The threat of reactivated
Salmonella

Quick increase of Enterobacteria
due to grinding
Enterobacteria CFU/gr

The threat of Salmonella contamination
is present at multiple points in the feed-tofood chain - from raw ingredients at the
mill through delivery of the finished food
product.
Feed manufacturing is a critical area to
address Salmonella risk, and hydrothermal
treatment, hydrating solutions and potent
organic acids are three tools that can help to
reduce Salmonella contamination.

2,400,000

2,500,000
2,000,000
1,500,000

550,000

1,000,000
500,000

220,000

13,000

0
Whole Barley

Ground Barley

Whole Wheat

Ground Wheat

A surge in Enterobacteria can accompany the grinding
of grain. Source: Trouw Nutrition Selko Lab.

Feedstuffs arriving at the mill with no detectable
indications of Salmonella can be contaminated or recontaminated with Salmonella during processing, should
environmental conditions facilitate the activation of
dormant Salmonella. Although the water activity level
in a typical feedstuff is too low to support Salmonella
growth (optimal >0.8), the dormant bacteria can survive
and reactivate under certain conditions.
Conditions that may allow dormant Salmonella
bacteria metabolisms to reactivate include exposure to
rising moisture levels in production processes such as
grinding, mixing and conditioning, and on-farm practices. For example, when farmers begin grinding the
grain, the exposed nutrients present a point of access for

Salmonella to enter and proliferate.
Enterobacteriaceae counts in barley and wheat surge
upon grinding, but whether Salmonella is present upon
arrival at the mill or is reactivated during feed processing, the following tools can help support a comprehensive Salmonella management program:

1

Hydrothermal treatment

Hydrothermal treatment refers to the addition of
heat and moisture to feed mash before it is processed
through a pelletizer. Controlling moisture in conjunction
with temperature can reduce the presence of Salmonella
in poultry feed during processing.
Within a feedstuff, the term "D-value" refers to the

To learn more, read: How to control Salmonella during poultry feed production
www.wattagnet.com/articles/26508
www.WATTAgNet.com ❙ December 2017


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Table of Contents for the Digital Edition of Poultry International - December 2017

Poultry International - December 2017
Contents
Editor’s Comment
News
African chicken production future bright but challenging
100TH YEAR SERIES: Will no-antibiotics-ever poultry improve human health?
How the world’s top chicken producers are investing
5 poultry programs you don’t want to miss at 2018 IPPE
CO2-neutral egg farm opens in the Netherlands
3 tools to control reactivated Salmonella in poultry feed
How broiler super pre-starter diets impact bird growth
Improve broiler carcass quality by minimizing fl apping
Products
Marketplace
Ad Index
Poultry International - December 2017 - CT1
Poultry International - December 2017 - CT2
Poultry International - December 2017 - Poultry International - December 2017
Poultry International - December 2017 - Cover2
Poultry International - December 2017 - Contents
Poultry International - December 2017 - Editor’s Comment
Poultry International - December 2017 - 3
Poultry International - December 2017 - News
Poultry International - December 2017 - 5
Poultry International - December 2017 - African chicken production future bright but challenging
Poultry International - December 2017 - 7
Poultry International - December 2017 - 8
Poultry International - December 2017 - 9
Poultry International - December 2017 - 10
Poultry International - December 2017 - 11
Poultry International - December 2017 - 100TH YEAR SERIES: Will no-antibiotics-ever poultry improve human health?
Poultry International - December 2017 - BB1
Poultry International - December 2017 - BB2
Poultry International - December 2017 - 13
Poultry International - December 2017 - 14
Poultry International - December 2017 - 15
Poultry International - December 2017 - How the world’s top chicken producers are investing
Poultry International - December 2017 - 17
Poultry International - December 2017 - 5 poultry programs you don’t want to miss at 2018 IPPE
Poultry International - December 2017 - 19
Poultry International - December 2017 - CO2-neutral egg farm opens in the Netherlands
Poultry International - December 2017 - 21
Poultry International - December 2017 - 22
Poultry International - December 2017 - 23
Poultry International - December 2017 - 3 tools to control reactivated Salmonella in poultry feed
Poultry International - December 2017 - 25
Poultry International - December 2017 - 26
Poultry International - December 2017 - 27
Poultry International - December 2017 - How broiler super pre-starter diets impact bird growth
Poultry International - December 2017 - 29
Poultry International - December 2017 - 30
Poultry International - December 2017 - 31
Poultry International - December 2017 - 32
Poultry International - December 2017 - 33
Poultry International - December 2017 - Improve broiler carcass quality by minimizing fl apping
Poultry International - December 2017 - 35
Poultry International - December 2017 - 36
Poultry International - December 2017 - 37
Poultry International - December 2017 - Products
Poultry International - December 2017 - Marketplace
Poultry International - December 2017 - Ad Index
Poultry International - December 2017 - Cover3
Poultry International - December 2017 - Cover4
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