Figure 2. Layer feeding phases – rearing period
Each diet is adapted tomeet the precise
requirement of the rearing hen in a specifc period.
During the frst phase the prestarter ProGress
is fed at a rate of 100g/bird. In the following
phases (starter, grower, developer and prelay) full
concentrates, concentrates or premixes are used,
depending on your system.
The frst 10weeks are very of vital importance for
the development of the basic body. After 10weeks
the basic body is still developing, but there is a risk
of non-functional fat deposition, so the diet must
bemodifed tomatch the bird’s requirements.
After 17 weeks the reproductive tract is developing
and the bird is preparing for laying, so nutrient
levels are increased to properly support the
development of the laying apparatus.
The prestarter ProGress is supportedby feld trials
carried out by Provimi. Results showthat by feeding
ProGress at a rate of 100g/bird the birds develop
well and there is better uniformity of the fock
during rearing aswell as during production. This in
turn improves the transition to other diets in the
programand results in improved egg production.
Provimi LayingPeriod (20weeks – end)
Provimi splits the laying period into four phases
as shown in Figure 3; layer start, phase I, phase II
andphase III. The start phase diet is high in amino
acids, phosphorus, linoleic acid and energy. The
maindifference inphase I, II and III is an increasing
calcium level in the feed and the additionof
Provimax from50weeks. In these phases full
concentrates, concentrates or premixes are used
depending on your system. Provimax canbe added
either in the concentrate or as a separate additive.
Figure 3. Layer feeding phases – laying period
It is important to offer extra support to the laying
hen during the frst weeks of egg production.
As shown in Figure 4, production starts up very
rapidly, although the feed intake is still limited.
Furthermore, the bird is not fullymature and
her body weight is still increasing (functional
bodyweight gain). So from20 to 25weeks the daily
nutrient requirement of the laying hen is high, and
feed intake capacity is limited, so Provimi advises
a special layer start feedwith higher amino acid
and energy levels, increased phosphorus andmore
linoleic acid.
Figure 4. Pattern of laying percentage, maturation,
body weight and feed intake of laying hens
(15 weeks onwards)
After 25 weeks Provimi recommends three
diets with increasing calcium levels. Amino acid
requirements per hen per day are determined by
the market requirements, whether a maximum
number of eggs are required, maximum egg mass
or maximum egg weight. From 50 weeks onwards
Provimax is added to improve eggshell quality and
stimulate laying persistency.
Conclusion
Provimi will workwith you to develop an excellent
tailor made nutritional programthat can achieve
optimal production results. Provimi takes into
account all conditions andmanagement systems
such as the breed, housing, available rawmaterials
and the production goals of the particular unit.
Therefore, every nutritional program is custom
made. Using our premixes, concentrates and other
Provimi products in the Power Layer Program, we
will help tomaximise your fock’s performance and
proftability.
P.O. Box 5063 3008 AB Rotterdam
T + 31 (0)10 423 95 00 F + 31 (0)10 484 56 24
E info@provimi.nl I www.provimi.nl
Age (weeks) 0 1
6
11 17 19
PS = Prestarter ProGress (100g/bird)
Phase
Starter Grower Developer Prelay
PS
Age (weeks) 20 25 35
50
end
Phase
Layer
Phase I
Layer
PhaseII
Layer
Phase II
incl. Provimax
Layer
start
Maturation
Body weight
(weeks)
15
19
25
35
45
55
Feed intake
Laying-%