Feed Strategy - March 2020 - 37

FeedStrategy ❙ 37

Quality of fish meal affects
weight gain, feed efficiency
High quality

Typical quality

100
Relative performance (%)

refused feed with more than 1% fish oil; and most fish
meals contained about 10% fish oil, so the math gives
1% oil more or less. With increasing piglet weight,
fish meal inclusion was reduced, but even in the later
stages of the nursery period, some high-quality feeds
contained 2.5% fish meal. A typical three-phase nursery
program, thus, might contain 10%, 7.5% and 2.5% fish
meal; the numbers picked in a way to accommodate the
typical weight of a bag of fish meal, 25 kg. But, back
then, good quality fish meal was about US$500-600
per ton as the price jumped first to US$1,000 and even
ended up, less than 10 years ago, to exceed US$2,000
per ton. Prices today for high-quality fish meal are about
US$1,500 per ton, which are still too high.

80
60
40
20
0

Weight gain

Feed efficiency

Source: Kim et al., 2001

Figure 1: Quality plays a major role in the case of
fish meal.

Removal from piglet diets
Fish meal was then removed from most piglet
formulas. First, because it became too expensive -
the reason being the diminishing fishing activities to
preserve natural fish stock and the high demand for
aqua feeds. Second, animal plasma was discovered
and required a huge chunk of the available formulation cost in order to be effective. With comparable
inclusion levels, animal plasma
was and remains about double
the price of fish meal. As results
were deemed better when animal
plasma was included, fish meal
became the only source of available cost to cover the new expense.
Having both in the same formula
was virtually impossible for cost
reasons, whereas many nutritionists even questioned the need as
animal plasma feeds seemed to
perform well without fish meal. I
am not sure if anyone even thought
of using less animal plasma in a
high fish meal diet, say in a factorial design.
Today, using animal plasma is no longer a no-questions-asked practice. Its value in terms of animal
performance is unquestionable, but other issues, along

with an increasing price, have created a schism among
nutritionists. Some use it as always, or prefer to use a
variation of it, like bovine-only source plasma. Others,
then, have abandoned it completely, either for alternative sources of immunoglobulins and whatever else in
animal plasma that makes it what it
is, or have gone back to more traditional formulas. If feed intake and
consequently growth performance
(or, is it vice versa?) suffer a bit, this
is not considered as too bad if the
feed is not super expensive. After
all, a high feed intake coupled with
below par health status is a success
recipe for diarrheas, especially
now that antibiotics and soon zinc
oxide will be banned everywhere,
eventually.

FISH MEAL
WAS THEN
removed from
most piglet
formulas
because it
became too
expensive,
but that is
changing.

Old idea new again?

Not long ago, I received a request
from a party interested to consult
for them regarding the possibility of using fish meal
in piglet diets. They considered piglet feeds as a good
target group for their products as they noticed the

March 2020 ❙ www.FeedStrategy.com

2003FSingredients.indd 37

2/28/2020 1:51:31 PM


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Feed Strategy - March 2020

Table of Contents for the Digital Edition of Feed Strategy - March 2020

Feed Strategy - March 2020
Contents
In the Mix
Industry Happenings
2020 Poultry Nutrition & Feed Survey: Poultry feed balances cost with market demands
Indian poultry to gain from food sector modernization
ASF, food trends, technology will leave their mark in 2020
Trustworthy dietary specifications for feed formulation
6 alternative energy sources for broilers
Vietnam’s feed industry sees market shifts, modernization
Mineral nutrition update for US pig feeds
Advertisers’ Index
Feed Strategy - March 2020 - Feed Strategy - March 2020
Feed Strategy - March 2020 - Cover2
Feed Strategy - March 2020 - Contents
Feed Strategy - March 2020 - In the Mix
Feed Strategy - March 2020 - Industry Happenings
Feed Strategy - March 2020 - 2020 Poultry Nutrition & Feed Survey: Poultry feed balances cost with market demands
Feed Strategy - March 2020 - 5
Feed Strategy - March 2020 - 6
Feed Strategy - March 2020 - 7
Feed Strategy - March 2020 - 8
Feed Strategy - March 2020 - 9
Feed Strategy - March 2020 - 10
Feed Strategy - March 2020 - 11
Feed Strategy - March 2020 - 12
Feed Strategy - March 2020 - 13
Feed Strategy - March 2020 - Indian poultry to gain from food sector modernization
Feed Strategy - March 2020 - 15
Feed Strategy - March 2020 - ASF, food trends, technology will leave their mark in 2020
Feed Strategy - March 2020 - 17
Feed Strategy - March 2020 - 18
Feed Strategy - March 2020 - 19
Feed Strategy - March 2020 - Trustworthy dietary specifications for feed formulation
Feed Strategy - March 2020 - 21
Feed Strategy - March 2020 - 22
Feed Strategy - March 2020 - 23
Feed Strategy - March 2020 - 6 alternative energy sources for broilers
Feed Strategy - March 2020 - 25
Feed Strategy - March 2020 - 26
Feed Strategy - March 2020 - 27
Feed Strategy - March 2020 - Vietnam’s feed industry sees market shifts, modernization
Feed Strategy - March 2020 - 29
Feed Strategy - March 2020 - 30
Feed Strategy - March 2020 - 31
Feed Strategy - March 2020 - Mineral nutrition update for US pig feeds
Feed Strategy - March 2020 - 33
Feed Strategy - March 2020 - 34
Feed Strategy - March 2020 - 35
Feed Strategy - March 2020 - 36
Feed Strategy - March 2020 - 37
Feed Strategy - March 2020 - 38
Feed Strategy - March 2020 - 39
Feed Strategy - March 2020 - Advertisers’ Index
Feed Strategy - March 2020 - Cover3
Feed Strategy - March 2020 - Cover4
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