Poultry International - August 2019 - 28

28 ❙ PoultryInternational

Guest editorial

by

Scott carter, Ph.D.

Working toward a better
understanding of poultry
dysbiosis
More precise definitions of dysbiosis would allow
more precise poultry gut health management

T

he term "dysbiosis" is increasingly used in technical and
marketing discussions about
poultry health, but have you ever
thought about what it really means? 
Dysbiosis is defined as "a
microbial imbalance or maladaptation on or inside the body" or
"a shift in the microbiome."  We
often use "dysbiosis" when talking
about gut health and inflammation, and even use it as a pseudodiagnostic term. The frustrating
problem is that dysbiosis is ultimately not well defined. We are
left with questions like:
■ What does a balanced microbial
population really look like in
poultry? 
■ What does a shifting population
mean? 
■ Is a specific "good" microbial
population always good, regardless of the situation? 

Often, we don't have any specific
answers to these questions beyond
a vague idea of dysbiosis, but we
also recognize that a clearer understanding of dysbiosis could bring
new advances in poultry health and
nutrition.  To better understand the
term, it is useful to look at what
science is learning about dysbiosis
broadly, understand that a narrow
and specific view of dysbiosis is most
helpful and the key aspects we need
to keep in mind when using the term. 
With the recent advances in
understanding the microbiome
in human and animal studies,
what it means to have dysbiosis
is becoming clearer, but these
insights also demonstrate how far
we yet need to go. Most scientists
agree that the clearest sign of
dysbiosis is a shift in dominance
toward a particular group of
bacteria, the proteobacteria. 

Poultry antibiotic alternatives: Expectation vs. reality:
www.WATTAgNet.com/articles/36658

The more light that can be
shone on the changes that are
leading to dysbiosis, the more
precise any management plan
can be. nobeastsofierce | Shutterstock
This large group of bacteria
are mainly gram-negative
bacteria that produce lipopolysaccharides that may be of
concern. Escherichia coli and
Salmonella are key members of
this group, but there are several
beneficial bacteria as well. While
it can be an indicator of problems,
this shift can also be affected by
diet changes, ingredient choices
and the use or removal of antibiotics without any negative
impact on the performance of a
flock. A diagnosis of "dysbiosis"
simply because there are elevated
proteobacteria levels is simply
not enough to effectively manage
poultry gut health.
www.WATTAgNet.com ❙ August 2019


http://www.WATTAgNet.com/articles/36658 http://www.WATTAgNet.com

Poultry International - August 2019

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

Poultry International - August 2019
Contents
Editor’s Comment
Japan’s poultry production continues to grow
Italian consumers purchasing higher-value eggs
SPACE to focus on many issues facing agriculture
Big data: connecting the chicken and the egg
To meet cage-free pledges, US industry will need to grow 3 times faster
Mexico’s poultry industry growing despite uncertainty
UK poultry research facility opens with unique advantages
Working toward a better understanding of poultry dysbiosis
4 major additives that replace antibiotics with success
How to avoid bottlenecks when packing processed poultry
Advertisers’ Index
Marketplace
Poultry International - August 2019 - Poultry International - August 2019
Poultry International - August 2019 - Cover2
Poultry International - August 2019 - CT1
Poultry International - August 2019 - CT2
Poultry International - August 2019 - Contents
Poultry International - August 2019 - Editor’s Comment
Poultry International - August 2019 - 3
Poultry International - August 2019 - Japan’s poultry production continues to grow
Poultry International - August 2019 - 5
Poultry International - August 2019 - 6
Poultry International - August 2019 - 7
Poultry International - August 2019 - Italian consumers purchasing higher-value eggs
Poultry International - August 2019 - 9
Poultry International - August 2019 - SPACE to focus on many issues facing agriculture
Poultry International - August 2019 - 11
Poultry International - August 2019 - Big data: connecting the chicken and the egg
Poultry International - August 2019 - 13
Poultry International - August 2019 - 14
Poultry International - August 2019 - 15
Poultry International - August 2019 - To meet cage-free pledges, US industry will need to grow 3 times faster
Poultry International - August 2019 - 17
Poultry International - August 2019 - 18
Poultry International - August 2019 - 19
Poultry International - August 2019 - Mexico’s poultry industry growing despite uncertainty
Poultry International - August 2019 - 21
Poultry International - August 2019 - 22
Poultry International - August 2019 - 23
Poultry International - August 2019 - UK poultry research facility opens with unique advantages
Poultry International - August 2019 - 25
Poultry International - August 2019 - 26
Poultry International - August 2019 - 27
Poultry International - August 2019 - Working toward a better understanding of poultry dysbiosis
Poultry International - August 2019 - 29
Poultry International - August 2019 - 4 major additives that replace antibiotics with success
Poultry International - August 2019 - 31
Poultry International - August 2019 - 32
Poultry International - August 2019 - 33
Poultry International - August 2019 - How to avoid bottlenecks when packing processed poultry
Poultry International - August 2019 - 35
Poultry International - August 2019 - Marketplace
Poultry International - August 2019 - Cover3
Poultry International - August 2019 - Cover4
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