Feed Strategy - June 2018 - 18
18 ❙ FeedStrategy
BROILER FEEDING TIPS
Nutrient recommendations for different broiler breeds
Feeding amount per bird (g)
Feeding period (days)
Digestable lysine (%)
Digestable methionine (%)
Digestable met + cys (%)
Available phosphorus (%)
Linoleic acid (%)
Source: Cobb-Vantress Inc.
Feed intakes, growth rates and growing period all need to be considered when formulating diets for
■ Energy: Levels in the diets can be slightly lower but, as
The real costs of
antibiotic-free, slowgrowing broilers:
Yurii Bukhanovskyi | BigStockPhoto.com
feed intakes are less, it can't be reduced too much - a
certain amount of energy is required.
Protein and amino acids: Trials have shown that levels
can be lowered, without affecting performance.
Alternative raw materials: Using ingredients with
higher fiber levels or less digestible co-products could
offset the increased feed costs of slow-growing broilers.
Macro minerals: As birds will be on their legs longer,
it is essential to support skeletal development and bone
mineralization. However, studies show improved gait
score and less lameness in slower-growing birds. This is
thought to be due to the combination of body conformation (smaller breast, larger legs) and slower growth rates.
Vitamin and mineral premixes: Breed companies
aren't suggesting any significant differences in the levels needed in diets for fast- and slow-growing broilers.
However, the amount they will consume will be in line
with a lower feed intake, although the volume over the
whole period will be greater.
■ Antibiotic free (ABF): Reducing the use of antibiotics
is a target for many producers but an ABF claim often
sits alongside a slow-grown broiler label. As such, supporting gut health and bird immunity should be a focus
in terms of additive addition, diet specifications and
■ No need for a super- or pre-starter diet: The starter
diet will generally be fed for nearly three times as long
and the birds will consume four times the amount of it.
While it is important to get birds off to a good start, a
short nutrient boost isn't required in a diet fed for about
one-third of its life.
■ Number of diets: Most breed companies still specify
three diets: starter, grower and finisher. However, each
will be fed for much longer and cover a larger growth
range. The grower ration will be fed for twice as long
and the finisher from 40 days until slaughter - potentially more than 30 days later.
www.WATTAgNet.com ❙ June 2018