Poultry International - August 2019 - 32

32 ❙ PoultryInternational

institutional research can often be
inadequate for several reasons and,
thus, the best advice is to test promising products at one's own facilities under commercial conditions.

3

7 additives to replace antibiotics in
US broiler feeds: www.WATTAgNet.
com/articles/28855

Zinc and copper

Besides their basic nutritional role, these minerals
have been used also
as gut health additives for many
decades, first copper and then zinc.
Certain products containing zinc or
copper have been shown to replicate the end effects of in-feed antibiotics with relative success. The
mode of action remains obscure
and rather complicated. Today,
there is a great number of products,
as is to be expected. Some are
organic forms, others inorganic;
even within these two major categories there are several distinct or
similar products. The point is that
the original research was based on
copper sulphate and zinc oxide as
sources of pharmacological levels
of these two minerals. The success
of other forms/products has been
from negative to almost successful.
The real problem is not finding
which product works, but that
governments have started banning
their use altogether, for reasons
that have to do with soil quality
preservation, as the excesses being
fed are spread as manure into crop
fields. Thus, even this effective tool

is being removed from our arsenal
of powerful antibiotic replacements. The fact that such products
have had little lobbying support at
major decision centers did not help
reaching a reasonable conclusion on
how to protect soil fertility without
decreasing animal health.

4

Fiber

Fiber is a word that
includes so many and
such diverse compounds
that is rather confusing, but it is the
word that we have left from the early
years of nutritional research and we
keep using it no matter how much
we advocate its redefinition. Adding
extra fiber in diets that previously
benefited from low-dosage levels of
antibiotics appears to help animals
establish a better gut microbiota that
copes better with pathogenic organisms. The amount and profile of
fiber to be used depends on species,
other additives and a host of other
variables. What most authorities
agree on is that more fiber is needed
when antibiotics are not needed, and
here stops any consensus on fiber

nutrition. Nevertheless, it is still a
new field of research for pigs and
poultry and, apart from breaking
away from traditional thinking, the
very same complex nature of fiber
makes research even more difficult.
But, if ruminant nutritionists who feed
microbes before they feed the animals
have managed to understand fiber,
then with a simpler animal as a monogastric, one might expect research to
be quicker and more conclusive.

Lack of coordinated and
trustworthy research
The above is intentionally generic
and of little practical use to demonstrate the lack of coordinated and
trustworthy research as opposed to
the plethora of available products
that require farm-specific application as opposed to the blanket
application of old-fashioned antibiotics. Of course, this list is but a
fragment of what is commercially
available. But it is not difficult to
realize the difficulties faced with
all other products when one is
already in half-dark with such wellestablished products. ■

Ioannis Mavromichalis, Ph.D., is an animal nutrition industry consultant. To contact Mavromichalis, email
imavromichalis@icloud.com.
www.WATTAgNet.com ❙ August 2019

Alisha Winson | Dreamstime.com

REPLACE ANTIBIOTICS WITH SUCCESS


http://www.Dreamstime.com http://www.WATTAgNet.com/articles/28855 http://www.WATTAgNet.com/articles/28855 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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