Poultry International - December 2017 - 26

26 ❙ PoultryInternational
3 TOOLS TO CONTROL REACTIVATED SALMONELLA IN POULTRY FEED

Impact of moisture level
on Salmonella (105°C)
CFU reduction

1,000,000
100,000
10,000
1,000
100
10
1
11.6

13.3

13.9

14.9

Moisture %

As the moisture level rises from 10 percent to 15 percent,
the reduction in colony-forming units (CFU) of Salmonella
increases significantly. Heidenrich, 2002
decimal reduction time, or the time required at a specific
temperature, under specified conditions, to reduce the microbial population by one decimal.

When it comes to reducing Salmonella, moisture value
and temperature are inversely related. Figure 2 shows that
at a higher moisture level (15 percent), an increased log reduction in Salmonella can be realized compared with a (10
percent) moisture level.
For a conventional feed mill, Figure 3 shows that optimizing the moisture profile and temperature throughout
the process may make it easier to control Salmonella. 
Heat treatment during fermentation can also help to
reduce the degradation of expensive nutrients in the feed.
Researchers in Denmark compared the free lysine concentration of uninoculated liquid feed and the same liquid feed
inoculated with 103, 105, and 107 Escherichia coli/ml, and
concluded that the loss of free lysine in fermented liquid
feed was due to metabolism by E. coli.
The researchers found degradation of free lysine occurred to a high extent when fermenting nonpelleted-nonheated feed. Limited degradation of free lysine occurred

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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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