PoultryUSA - September 2017 - 44
44 ❙ WATTPoultryUSA
IMPACT BIRD GROWTH
The gastrointestinal tract grows four times faster than
the rest of the body during the first two weeks of life.
It is this organ that is driving body weight gain and as
such requires up to 40 percent of the energy and protein
that the young bird consumes. High protein content is
also necessary in diets for young birds, apart from for
growth to help maintain body temperature. Probiotics
may added to diets to seed the gut with beneficial bacteria or protect it from pathogens.
bryo and continues after hatching. In the first week of
life, there is a rapid increase in the number of leucocytes, due to the growth of the lymphoid organs. The
synthesis of immune cells is a metabolically expensive
process and is highly dependent on the presence of
nucleotides. These protein building blocks can be
found in significant amounts in certain concentrated
■ Antioxidant protection
■ Supporting the immune system
Development of the immune system starts in the em-
IT IS IMPORTANT TO
provide the neonatal chick
with optimal nutrients.
A specific vitamin and mineral pre-mix would be
used in super-pre starters to meet the specific needs.
Focusing on other potential negative inﬂuences, such
as oxidative stress, can also optimize a bird's potential. As such, diets may contain particular levels and
highly available sources of vitamin E and selenium.
For example, selenoproteins play an important role in
protecting the body from damage by free radicals.
www.WATTAgNet.com ❙ September 2017