Egg Industry - May 2019 - 7

EggIndustry ❙ 7

7

Bones

Bone health has always been a problem with
hens. Lack of movement/exercise and high egg
productivity in traditional cage systems lead
to weak bone structure. Hens cannot absorb enough
calcium to sustain a strong bone structure and their
genetically determined high productivity. In cage-free
hens, strong bones are a prerequisite as the extra movement and flying around can be the cause of higher incidences of fractures, especially toward the end of their
cycle. This will lead at its slightest form to reduced feed
and water intake, as hens will have difficulty moving
around to satisfy these needs. Thus, all measures already
taken in traditional hen nutrition to ensure enough
calcium, phosphorus and vitamin D are absorbed daily

THERE IS NO DOUBT that
many more issues will
be revealed as the new
cage-free systems become
commonplace.
should be intensified in cage-free systems.
There is no doubt that many more issues will be
revealed as the new cage-free systems become commonplace throughout the world. We might have resolved one
issue, that of welfare, but we have created several new
ones. It could be false to claim that nutrition alone can
resolve all these issues, but at least it can help in alleviating some of them until a more sustainable resolution
emerges. Until then, it is business as usual, with the wellknown method of trial and error. ■

Ioannis Mavromichalis, Ph.D., is an animal nutrition industry consultant. To contact Mavromichalis, email
imavromichalis@icloud.com.

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Egg Industry - May 2019

Table of Contents for the Digital Edition of Egg Industry - May 2019

Egg Industry - May 2019
7 cage-free layer nutrition issues that require attention
Feeding for success in cage-free egg production
Top Egg Company trends, statistics and predictions
Egg Industry - May 2019 - CT1
Egg Industry - May 2019 - CT2
Egg Industry - May 2019 - Egg Industry - May 2019
Egg Industry - May 2019 - Cover2
Egg Industry - May 2019 - CT3
Egg Industry - May 2019 - CT4
Egg Industry - May 2019 - 3
Egg Industry - May 2019 - 7 cage-free layer nutrition issues that require attention
Egg Industry - May 2019 - 5
Egg Industry - May 2019 - 6
Egg Industry - May 2019 - 7
Egg Industry - May 2019 - Feeding for success in cage-free egg production
Egg Industry - May 2019 - 9
Egg Industry - May 2019 - 10
Egg Industry - May 2019 - 11
Egg Industry - May 2019 - 12
Egg Industry - May 2019 - 13
Egg Industry - May 2019 - 14
Egg Industry - May 2019 - 15
Egg Industry - May 2019 - Top Egg Company trends, statistics and predictions
Egg Industry - May 2019 - 17
Egg Industry - May 2019 - 18
Egg Industry - May 2019 - 19
Egg Industry - May 2019 - 20
Egg Industry - May 2019 - 21
Egg Industry - May 2019 - 22
Egg Industry - May 2019 - Cover3
Egg Industry - May 2019 - Cover4
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