Feed Strategy - December 2019 - 24

24 ❙ FeedStrategy

Updating thinking
on bioactive
fatty acids in pig
nutrition
Unlike current human-nutrition trends,
essential fatty acids are still regarded
with traditional aplomb among many
pig nutritionists, but times are changing.
IOANNIS MAVROMICHALIS

F

atty acids are the component blocks that bind to
glycerol to form fats (solid) and oils (liquids), or as
they are called in chemistry, triacylglyceride esters.
There are many different fatty acids and their
different combinations with glycerol gives us the
plethora of high-energy fats and oils we use in pig
feeds. Lipids or ether extracts are two other all-inclusive terms used to describe fats and oils, and although
neither precise nor accurate, they are good enough for
feed manufacturing purposes.

Commercial situation today
In typical pig nutrition terms, fats and oils are considered very much the same as they contribute more
or less the same amount of energy - their primary
reason for inclusion in most feeds.
Any inherent variability due to composition is significantly much smaller than the extensive variability observed
under commercial conditions in terms of factual product
quality. For all pig diets, adding 0.5% oil/fat is considered
the minimum to enhance die lubrication for pelleting and/
or prevent excessive feed dustiness in meal feed.
If dietary energy enhancement is the required
outcome, then adding up to 6% of any good quality

fat/oil is the norm, as most feed manufacturing and
handling machinery cannot easily cope with more than
that, with some notable exceptions.
It is only in the first couple of piglet diets where we
distinguish between different sources of fats and oils,
but this has to do more with digestibility/palatability
issues rather than any more sophisticated role.

Metabolism and essential fatty acids
Traditional nutrition books consider three fatty acids
as essential, but today this requires some further
clarification.
First, there is linoleic acid that is absolutely essential, in that the organism cannot create it and, as such,
pigs must receive it from feeds. Luckily, common feedstuffs contain plenty of this fatty acid, which belongs
to the omega-6 group.
The second essential fatty acid is arachidonic,
also a member of the omega-6 family, but modern
research has demonstrated the organism may be able to
synthesize it if supplied with enough linoleic acid. This
finding is as recent as 2011, and thus it is still under
investigation, especially because we do not know how
much linoleic acid is enough to cover arachidonic
www.FeedStrategy.com ❙ December 2019


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Feed Strategy - December 2019

Table of Contents for the Digital Edition of Feed Strategy - December 2019

Feed Strategy - December 2019
Contents
In the Mix
Industry Happenings
Mar-Jac Poultry feed mill built for capacity, expansion
A feed manufacturer’s watchlist for 2020
What feed formulators need to know about organic rations
Marketing nutrition by writing the article
Updating thinking on bioactive fatty acids in pig nutrition
Examining the components of optimal dairy cow nutrition
4 programs for the feed industry at 2020 IPPE
Advertisers’ Index
Feed Strategy - December 2019 - CT1
Feed Strategy - December 2019 - CT2
Feed Strategy - December 2019 - Feed Strategy - December 2019
Feed Strategy - December 2019 - Cover2
Feed Strategy - December 2019 - Contents
Feed Strategy - December 2019 - In the Mix
Feed Strategy - December 2019 - Industry Happenings
Feed Strategy - December 2019 - Mar-Jac Poultry feed mill built for capacity, expansion
Feed Strategy - December 2019 - 5
Feed Strategy - December 2019 - 6
Feed Strategy - December 2019 - 7
Feed Strategy - December 2019 - 8
Feed Strategy - December 2019 - 9
Feed Strategy - December 2019 - 10
Feed Strategy - December 2019 - 11
Feed Strategy - December 2019 - 12
Feed Strategy - December 2019 - 13
Feed Strategy - December 2019 - A feed manufacturer’s watchlist for 2020
Feed Strategy - December 2019 - 15
Feed Strategy - December 2019 - 16
Feed Strategy - December 2019 - 17
Feed Strategy - December 2019 - What feed formulators need to know about organic rations
Feed Strategy - December 2019 - 19
Feed Strategy - December 2019 - 20
Feed Strategy - December 2019 - 21
Feed Strategy - December 2019 - Marketing nutrition by writing the article
Feed Strategy - December 2019 - 23
Feed Strategy - December 2019 - Updating thinking on bioactive fatty acids in pig nutrition
Feed Strategy - December 2019 - 25
Feed Strategy - December 2019 - 26
Feed Strategy - December 2019 - 27
Feed Strategy - December 2019 - 28
Feed Strategy - December 2019 - 29
Feed Strategy - December 2019 - Examining the components of optimal dairy cow nutrition
Feed Strategy - December 2019 - 31
Feed Strategy - December 2019 - 32
Feed Strategy - December 2019 - 33
Feed Strategy - December 2019 - 34
Feed Strategy - December 2019 - 35
Feed Strategy - December 2019 - 36
Feed Strategy - December 2019 - 37
Feed Strategy - December 2019 - 4 programs for the feed industry at 2020 IPPE
Feed Strategy - December 2019 - 39
Feed Strategy - December 2019 - Advertisers’ Index
Feed Strategy - December 2019 - Cover3
Feed Strategy - December 2019 - Cover4
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