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In
Vivo Digestibility Experiment In UCD
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Malt
Sprouts
Malt sprouts are a by-product of
malting, consisting of mainly dried
rootlets and sprouts usually from
germinated barley. The digestibility of
malt sprouts was found to be very low.
Approximately half of the dry matter and
energy content of the examined sample
was digested. Digestion of neutral
detergent fibre at 0.185 was extremely
poor and there was a large coefficient
of variation between animals. Malts
sprouts have a very low DE content of
8.6 MJ/kg.
Palm
Kernel meal
Palm kernel meal is the residue after
the removal of oil from the nut of the
oil palm. The vast majority (>70%) of
Palm Kernel meal imported into Ireland
is Malaysian / Indonesian in origin
rather than African.
In the current study, the digestibility
of African palm kernel was low with an
energy digestibility of 58%. Despite the
high oil content, the high fibre
component of palm kernel meal resulted
in a relatively low DE content of 10.5
MJ/kg. The high crude fibre content of
African palm kernel meal limits its use
in pig diets.
Pollard
Pollard is a by-product of flour
manufacture. The current study found
pollard to be an excellent source of
energy for pigs with a DE value of 12.6
MJ/kg. R&H Hall previously reported
a much lower DE content for pollard of
10.6 MJ/kg. The NRC (1998) report a DE
content for pollard of 12.86 MJ/kg,
which is much closer to the value
obtained in the present study. The
favourable protein digestibility of
pollard along with its average energy
content make it a very useful feedstuff
for grower-finisher pig diets. Recent
experiments at Lyons Research Farm have
shown that 15 to 20% Irish pollard can
be used in finisher pig diets without
affecting pig performance.
Soya Hulls
Soya hulls is a by-product of the soya
bean oil industry. There was some
variation between the soya hulls in this
study. SH98 had a higher DE than the
SH99 sample (9.9 MJ/kg vs. 8.3 MJ/kg)(see Table
3). The neutral
detergent fibre (NDF) digestibility
coefficient was lower in the latter
sample. Soya hulls is a poor energy
source for pig diets. It contains 10 per
cent protein only half of which is
actually digestible.
Sunflower
meal
Sunflower meal is the residue remaining
after the removal of oil from sunflower
seeds. The extent of decortication is
variable which has a big effect on
feeding value as the hulls are very
indigestible. Sunflower meal in the
current study had a low DE content of
8.6 MJ/kg, which compares well with the
NRC (1998) value of 8.4 MJ/kg. Sunflower
meal has a high crude protein content
(289 g/kg), which is of poor
digestibility. As an energy source,
sunflower meal is poor and very
variable.
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Introduction
| In Vivo Digestability Experiment in UCD,
Ctd, Ctd,
Ctd, Ctd
| Protein Sources
Effect
of Inclusion Level | Cereals |
Conclusion
| Main References |
About
the Authors
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