Poultry International - October 2019 - 50

50 ❙ PoultryInternational
SALMONELLA DETECTION
persistence of Salmonella than pullets that were fed with
a skip-a-day program. Emptying of the crop every other
day, allowing for an increase in crop pH and litter picking
may contribute to a higher prevalence and persistence of
Salmonella positive ceca.

■ Salmonella sampling in slaughter plants
During turkey and broiler processing, multiple sampling
methods including whole carcass rinse, excision (skin or
muscle), swab, neck skin and whole carcass enrichment
have been evaluated for the detection of Salmonella.
For turkey carcasses, methods that require sampling of
a larger surface area of the carcass (whole carcass swabbing
and whole carcass rinse) are more sensitive than one or two
site swab sampling. Following immersion chilling, whole
carcass enrichment was the most sensitive method, neck skin
less sensitive and whole carcass rinse the least sensitive.
Although sampling methods vary in sensitivity,
each method has a minimal level of detection. The
most sensitive method (whole carcass enrichment)
requires approximately eight to 10 cells present on
the carcass for a positive result following 24 hours of
enrichment incubation.

An example of a hand grab of litter including feces
Courtesy Dianna Bourassa

Therefore, any product sampled can never really be
declared Salmonella-free. The absence of a positive result
from a carcass or 325 grams of comminuted product does
not indicate that there is no Salmonella present. Use of
the phrase zero tolerance may lead consumers to believe
that there is no Salmonella on raw product and may give a
false sense of security.

Serogroup diversity is impacted
by sampling and analysis methods

An example of a pre-moistened sock used for litter
sampling Courtesy Dianna Bourassa

When the detection of Salmonella serogroups was
analyzed following three different carcass sampling
methods - neck skin, whole carcass rinse and whole
carcass enrichment - the greatest number of serogroups
was found with whole carcass enrichment (five serogroups) followed by neck skins (two serogroups), followed
by whole carcass rinse (one serogroup). The greater serogroup detection may be due to incubation of the carcass or
skin within the rinse media.
Incubation in the media would have allowed for
Salmonella that was tightly attached to the carcass to be
detected while the whole carcass rinse sample would only
contain those Salmonella that were more easily rinsed off
during sampling.
Sample enrichment and the use of selective media
are commonly used when culturing for Salmonella. If
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Poultry International - October 2019

Table of Contents for the Digital Edition of Poultry International - October 2019

Poultry International - October 2019
Contents
Editor’s Comment
News
Top world broiler, egg rankings for 2019
World’s top 50 broiler producers
World’s top 25 egg producers
Africa’s top broiler producers
Africa’s top egg producers
Asia’s top broiler producers
Asia’s top egg producers
Caribbean & Central America’s top broiler producers
Caribbean & Central America’s top egg producers
Europe’s top broiler producers
Europe’s top egg producers
Middle East’s top broiler producers
Middle East’s top egg producers
North America’s top broiler producers
North America’s top egg producers
Oceania’s top broiler producers
Oceania’s top egg producers
South America’s top broiler producers
South America’s top egg producers
Biology, engineering, business intersect at Poultry Tech Summit
How sample type, analysis impact Salmonella detection
Products
Marketplace
Advertisers’ Index
Poultry International - October 2019 - CT1
Poultry International - October 2019 - CT2
Poultry International - October 2019 - Poultry International - October 2019
Poultry International - October 2019 - Cover2
Poultry International - October 2019 - Contents
Poultry International - October 2019 - Editor’s Comment
Poultry International - October 2019 - 3
Poultry International - October 2019 - News
Poultry International - October 2019 - 5
Poultry International - October 2019 - World’s top 50 broiler producers
Poultry International - October 2019 - 7
Poultry International - October 2019 - World’s top 25 egg producers
Poultry International - October 2019 - 9
Poultry International - October 2019 - Africa’s top broiler producers
Poultry International - October 2019 - 11
Poultry International - October 2019 - Asia’s top broiler producers
Poultry International - October 2019 - 13
Poultry International - October 2019 - 14
Poultry International - October 2019 - 15
Poultry International - October 2019 - 16
Poultry International - October 2019 - Asia’s top egg producers
Poultry International - October 2019 - Caribbean & Central America’s top egg producers
Poultry International - October 2019 - 19
Poultry International - October 2019 - Europe’s top broiler producers
Poultry International - October 2019 - 21
Poultry International - October 2019 - 22
Poultry International - October 2019 - 23
Poultry International - October 2019 - Europe’s top egg producers
Poultry International - October 2019 - 25
Poultry International - October 2019 - Middle East’s top broiler producers
Poultry International - October 2019 - 27
Poultry International - October 2019 - 28
Poultry International - October 2019 - 29
Poultry International - October 2019 - Middle East’s top egg producers
Poultry International - October 2019 - 31
Poultry International - October 2019 - North America’s top broiler producers
Poultry International - October 2019 - 33
Poultry International - October 2019 - North America’s top egg producers
Poultry International - October 2019 - 35
Poultry International - October 2019 - 36
Poultry International - October 2019 - 37
Poultry International - October 2019 - 38
Poultry International - October 2019 - Oceania’s top egg producers
Poultry International - October 2019 - South America’s top broiler producers
Poultry International - October 2019 - 41
Poultry International - October 2019 - 42
Poultry International - October 2019 - 43
Poultry International - October 2019 - South America’s top egg producers
Poultry International - October 2019 - 45
Poultry International - October 2019 - Biology, engineering, business intersect at Poultry Tech Summit
Poultry International - October 2019 - 47
Poultry International - October 2019 - How sample type, analysis impact Salmonella detection
Poultry International - October 2019 - 49
Poultry International - October 2019 - 50
Poultry International - October 2019 - 51
Poultry International - October 2019 - Products
Poultry International - October 2019 - 53
Poultry International - October 2019 - 54
Poultry International - October 2019 - 55
Poultry International - October 2019 - Advertisers’ Index
Poultry International - October 2019 - Cover3
Poultry International - October 2019 - Cover4
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