Feed International - April/May 2017 - 30

30 ❙ FeedInternational
FATTY ACIDS IN PIG DIETS

Minimal MCFA concentration to reduce bacterial growth
Escherichia
coli

Streptococcus
suis

Salmonella
poona

Clostridium
perfringens

Caprilic and Capric acid (60:40)

0.3

<0.2

>1.0

0.1

Lauric acid

0.2

0.2

0.2

0.1

Minimum inhibitory concentration (MIC) 50 (%)

Source: Batovska, D., et al., 2009

MCFAs have antibacterial activity against common pig pathogens.

Reducing antibiotic usage
MCFAs are one of the strategies being employed by
producers wishing to reduce or remove antibiotics from
their production.
"While there is no direct replacement for antibiotics,
they are a useful tool, particularly post-weaning," says
Violet Beatie, research and technical manager, Devenish
Nutrition. "They should be employed alongside improvements in management, nutrition and hygiene."
With a potential EU ban on zinc oxide, products that could
help prevent post-weaning diarrhea are particularly interesting.
American scientists decided to compare the performance
of nursery pigs fed MCFAs with and without a commercial
antibiotic program. The recently published data showed that
MCFAs improved the performance of pigs fed a diet contain-

ing antibiotics. Similar weight gains and a numerical trend
for improved feed efficiency were seen when compared with
an antibiotic-free diet - with savings of $0.45 per pig.

Future implications

Performance parameter (lbs)

MCFAs have been shown to have a beneficial effect at the
microflora and host animal level. Therefore, their use to support pigs in times of stress is worth further investigation.
As already discussed, their inclusion in antibioticfree diets has potential. However, not all products are the
same. Nutritionists should ensure that the MCFAs are
pure, stable and well defined.
There is some concern about potential negative effects
of MCFAs on feed intake in certain circumstances. This
is one of the reasons the product specification and level
of inclusion should be carefully considered
for each life stage. In the case of combination
Pig performance: Antibiotics +
products, the level and ratio of short-, meMCFAs vs. MCFAs diets
dium- and long-chain fatty acids will have a
Source: McManus, D., et al.
significant effect on efficacy.
Average
Average daily
Feed:Gain
As with all feed additives, they need to pay
daily gain (lbs)
feed intake (lbs)
for themselves - so potential performance im1.6
provements must be calculated. However, the
1.4
1.2
benefits of MCFAs are becoming more widely
1
accepted and will probably appear in pig diets
0.8
more frequently. ■
0.6
0.4
0.2
0

References available on request.

T1: MCFAs and Antibiotics

T2: MCFAs

Equivalent performance was observed between those pigs fed
MCFAs alone or in combination with antibiotics.

Zoe Kay is an independent consultant
providing technical services to the animal
health and nutrition industry. She can be
reached at cuckooconsulting@gmail.com.
www.WATTAgNet.com ❙ April/May 2017


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Table of Contents for the Digital Edition of Feed International - April/May 2017

Feed International - April/May 2017
Contents
In the Mix
Happenings
2017 NUTRITION & FEED SURVEY: Antibiotic-free animal feed production grows worldwide
100TH YEAR SERIES: Gut health additives: four possible future scenarios
7 alternative vegetable protein sources for broilers
Belarus feed manufacturers pressured by falling margins
How to use medium-chain fatty acids in pig diets
FVG Select to combine conferences, expo, networking
World Pork Expo returns to Iowa State Fairgrounds
Products
Marketplace
Advertisers’ Index
Feed International - April/May 2017 - Feed International - April/May 2017
Feed International - April/May 2017 - Cover2
Feed International - April/May 2017 - Contents
Feed International - April/May 2017 - In the Mix
Feed International - April/May 2017 - 3
Feed International - April/May 2017 - Happenings
Feed International - April/May 2017 - 5
Feed International - April/May 2017 - 2017 NUTRITION & FEED SURVEY: Antibiotic-free animal feed production grows worldwide
Feed International - April/May 2017 - 7
Feed International - April/May 2017 - 8
Feed International - April/May 2017 - 9
Feed International - April/May 2017 - 10
Feed International - April/May 2017 - 11
Feed International - April/May 2017 - 100TH YEAR SERIES: Gut health additives: four possible future scenarios
Feed International - April/May 2017 - 13
Feed International - April/May 2017 - 14
Feed International - April/May 2017 - 15
Feed International - April/May 2017 - 7 alternative vegetable protein sources for broilers
Feed International - April/May 2017 - 17
Feed International - April/May 2017 - 18
Feed International - April/May 2017 - 19
Feed International - April/May 2017 - 20
Feed International - April/May 2017 - 21
Feed International - April/May 2017 - Belarus feed manufacturers pressured by falling margins
Feed International - April/May 2017 - 23
Feed International - April/May 2017 - 24
Feed International - April/May 2017 - 25
Feed International - April/May 2017 - 26
Feed International - April/May 2017 - 27
Feed International - April/May 2017 - How to use medium-chain fatty acids in pig diets
Feed International - April/May 2017 - 29
Feed International - April/May 2017 - 30
Feed International - April/May 2017 - 31
Feed International - April/May 2017 - FVG Select to combine conferences, expo, networking
Feed International - April/May 2017 - 33
Feed International - April/May 2017 - World Pork Expo returns to Iowa State Fairgrounds
Feed International - April/May 2017 - Products
Feed International - April/May 2017 - Advertisers’ Index
Feed International - April/May 2017 - Cover3
Feed International - April/May 2017 - Cover4
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