Pig International - November 2017 - 26

26 ❙ PigInternational
PIGLET GASTRIC PH DEVELOPMENT
measures are proposed. First, lowprotein diets composed of highly-digestible protein sources are strongly
recommended for the first few days
post-weaning. To this end, ingredients like refined vegetable proteins
(from soya, wheat, peas, etc.),
animal-derived ingredients (blood
products, egg protein, fish meal) or
dairy products are of exceptional

value in diet formulation.
Second, if ad libitum feeding (the
normal method of feeding weaned
pigs) results in overloading of the
immature digestive system, then
restricted feeding may be employed
for a limited period of time (usually,
two to five days post-weaning is
enough). Prolonging this period only
results in reduced performance.

Third, addition of lactic acid or
any other acids in post-weaning diets has been shown repeatedly to improve animal performance, mostly
due to their antimicrobial properties
and less due to any lowering of gastric pH. The best acid to use is less
important than the amount of the
acid used. However, after establishing the correct amount of organic
acids to use, picking the correct
blend to match the protein profile of
the diet remains crucial. Original
research on organic acids calls for
levels up to 20 kg per metric ton of
feed, but 10 kg are more reasonable.
This is because some, but not all,
organic acids can be corrosive and
even depress feed intake at such
high levels. For cost and marketing
considerations, modern practice
calls for 1 to 2 kg of acids per metric
ton. At this level, there is virtually
no possibility of having any effect
at gut level unless the feed or the
animals' environment is extremely
contaminated with pathogens. In addition, protein digestion is unlikely
to be affected by such insignificant
additions of organic acids.

Summing up

Acidity and alkalinity are a natural phenomenon encountered in
everyday life, affecting all living organisms. | Alain Lacroix, Dreamstime.com

In brief, gastric pH is correctly set
by natural development at moderate
levels during the suckling period. At
weaning, however, dietary measures
must be taken to ensure the feed's
protein and organic acid profile
match so that gastric pH is reduced
rapidly to levels that ensure maximal
protein digestion and gut health. ■
www.WATTAgNet.com ❙ November/December 2017

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

Table of Contents for the Digital Edition of Pig International - November 2017

Pig International - November 2017
Contents
Pigs and Money
Industry Happenings
What you should know about gastric ulcers in pigs
Business, science behind phytogenics in pig feeds
Mastitis in sows: A perennial problem
Understanding chemistry of organic acids in antibiotic-free diets
How piglet gastric pH development affects gut health
Debunking trace mineral myths in animal nutrition
Animal feed formulation: Fiber matrix secrets revealed
World’s top 40 pork processors
World’s top 40 pork producers
5 programs pig producers don’t want to miss at IPPE 2018
Products
Marketplace
Advertisers’ Index
Pig International - November 2017 - BB1
Pig International - November 2017 - BB2
Pig International - November 2017 - Pig International - November 2017
Pig International - November 2017 - Cover2
Pig International - November 2017 - Contents
Pig International - November 2017 - Pigs and Money
Pig International - November 2017 - Industry Happenings
Pig International - November 2017 - What you should know about gastric ulcers in pigs
Pig International - November 2017 - 5
Pig International - November 2017 - 6
Pig International - November 2017 - 7
Pig International - November 2017 - Business, science behind phytogenics in pig feeds
Pig International - November 2017 - 9
Pig International - November 2017 - 10
Pig International - November 2017 - 11
Pig International - November 2017 - 12
Pig International - November 2017 - 13
Pig International - November 2017 - Mastitis in sows: A perennial problem
Pig International - November 2017 - 15
Pig International - November 2017 - 16
Pig International - November 2017 - 17
Pig International - November 2017 - 18
Pig International - November 2017 - 19
Pig International - November 2017 - Understanding chemistry of organic acids in antibiotic-free diets
Pig International - November 2017 - 21
Pig International - November 2017 - 22
Pig International - November 2017 - 23
Pig International - November 2017 - How piglet gastric pH development affects gut health
Pig International - November 2017 - 25
Pig International - November 2017 - 26
Pig International - November 2017 - 27
Pig International - November 2017 - Debunking trace mineral myths in animal nutrition
Pig International - November 2017 - 29
Pig International - November 2017 - 30
Pig International - November 2017 - 31
Pig International - November 2017 - Animal feed formulation: Fiber matrix secrets revealed
Pig International - November 2017 - 33
Pig International - November 2017 - 34
Pig International - November 2017 - 35
Pig International - November 2017 - World’s top 40 pork processors
Pig International - November 2017 - World’s top 40 pork producers
Pig International - November 2017 - 5 programs pig producers don’t want to miss at IPPE 2018
Pig International - November 2017 - Products
Pig International - November 2017 - Advertisers’ Index
Pig International - November 2017 - Cover3
Pig International - November 2017 - Cover4
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