Poultry International - June 2017 - 41

PoultryInternational ❙ 41

this reaction under normal conditions. Why eggs contain
avidin is something that escapes scientists at the moment,
but it is what it is, and we should consider it if we decide
to feed raw egg whites to animals. Heat treatment destroys
avidin, releasing biotin, but even then, there is no reason to
worry about avidin in whole eggs, raw or processed. The
amount of avidin in whole eggs is roughly equimolar to
that of biotin. Thus, in the worst-case scenario, egg avidin
will just neutralize egg biotin without affecting biotin from
other ingredients or premixes.

Which feeds require biotin
supplementation?
Cereals like corn and wheat contain about 0.06 and 0.11
mg/kg, respectively. Major protein sources like soybean
and rapeseed meals contain 0.26 and 0.98 mg/kg, respectively. In general, cereals are a rather poor sources of biotin,

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compared to poultry requirements, but they constitute the
largest part of their feed (roughly 65 percent). In contrast,
protein sources play a small role in terms of inclusion rate
(roughly 20 percent), but they are rather good sources of
this vitamin. Lamentably, all natural ingredients are characterized by rather poor biotin bioavailability (50 percent),
which means about half of natural biotin is of no use to the
animal.
A typical diet (corn and soybean meal) will thus contain
about 0.09 mg/kg biotin, which is marginal compared to
most recommendations. Here, we should mention that the
National Research Council (1994)) requirements are between 0.15 and 0.30 mg/kg for the many species and classes
of poultry. Thus, it is evident that most natural ingredients
will fail to satisfy the total needs of biotin for poultry. In
the case of wheat-based diets, this deficiency becomes even
more pronounced as wheat biotin is virtually unavailable.


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Table of Contents for the Digital Edition of Poultry International - June 2017

Poultry International - June 2017
Contents
Editor’s Comment
News
Nutrition & Feed Survey: Antibiotic-free animal feed production grows worldwide
Future of poultry welfare: What producers can expect
Global food companies will control the poultry industry
VIV Turkey creates international network platform
How China’s poultry industry is changing
Controlling poultry gut health for maximum performance
Biotin for poultry: An essential but expensive vitamin
6 processed chicken marketing strategies to boost sales
Marketplace
Advertisers’ Index
Poultry International - June 2017 - Poultry International - June 2017
Poultry International - June 2017 - Cover2
Poultry International - June 2017 - Contents
Poultry International - June 2017 - Editor’s Comment
Poultry International - June 2017 - 3
Poultry International - June 2017 - News
Poultry International - June 2017 - 5
Poultry International - June 2017 - 6
Poultry International - June 2017 - 7
Poultry International - June 2017 - Nutrition & Feed Survey: Antibiotic-free animal feed production grows worldwide
Poultry International - June 2017 - 9
Poultry International - June 2017 - 10
Poultry International - June 2017 - 11
Poultry International - June 2017 - 12
Poultry International - June 2017 - 13
Poultry International - June 2017 - 14
Poultry International - June 2017 - 15
Poultry International - June 2017 - Future of poultry welfare: What producers can expect
Poultry International - June 2017 - BB1
Poultry International - June 2017 - BB2
Poultry International - June 2017 - 17
Poultry International - June 2017 - 18
Poultry International - June 2017 - 19
Poultry International - June 2017 - Global food companies will control the poultry industry
Poultry International - June 2017 - 21
Poultry International - June 2017 - 22
Poultry International - June 2017 - 23
Poultry International - June 2017 - VIV Turkey creates international network platform
Poultry International - June 2017 - 25
Poultry International - June 2017 - How China’s poultry industry is changing
Poultry International - June 2017 - 27
Poultry International - June 2017 - 28
Poultry International - June 2017 - 29
Poultry International - June 2017 - 30
Poultry International - June 2017 - 31
Poultry International - June 2017 - 32
Poultry International - June 2017 - 33
Poultry International - June 2017 - Controlling poultry gut health for maximum performance
Poultry International - June 2017 - 35
Poultry International - June 2017 - 36
Poultry International - June 2017 - 37
Poultry International - June 2017 - Biotin for poultry: An essential but expensive vitamin
Poultry International - June 2017 - 39
Poultry International - June 2017 - 40
Poultry International - June 2017 - 41
Poultry International - June 2017 - 42
Poultry International - June 2017 - 43
Poultry International - June 2017 - 6 processed chicken marketing strategies to boost sales
Poultry International - June 2017 - 45
Poultry International - June 2017 - 46
Poultry International - June 2017 - Marketplace
Poultry International - June 2017 - Advertisers’ Index
Poultry International - June 2017 - Cover3
Poultry International - June 2017 - Cover4
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