Nutrients Intake and Digestibility of Wild Cocoyam (Caladium Bicolor) based Diets by West African Dwarf Bucks
Abstract
Feed consumed by animal is
subject to natural processes in the animal system before it could be useful to
the animal. And it is after digestion that the imbedded nutrients can be available
for use by animal for various purposes. Non-conventional foodstuff could be fed
to animal, but the challenge accompanying it is its digestion for the inherent
nutrients to be utilized by animal. A research was conducted to evaluate the
nutrient intake and digestibility by West African Dwarf (WAD) bucks fed graded
level of boiled Caladium bicolor. Four matured WAD bucks were confined
individually in metabolism cages and offered the diets (A-D) in a 4x4 latin
square design experiment. The diets were formulated using Boiled Caladium
Bicolor (BCB), cassava peels, brewer dried grain, palm kernel cake, bone meal
and common salt. The percentage inclusion level of BCB in the four diets were
0%(A), 10%(B), 20%(C), and 30%(D) respectively with diet A being the control.
Each animal received each of the diet for 28 days in each of the 4 phases.
Urine and faecal samples were taken and analyzed for nitrogen and proximate
composition. Dry Matter Intake (DMI) obtained decreased significantly
(P<0-05) with increase inclusive level of boiled Caladium bicolor (54.91 -
47.01) for treatment A-D respectively. Crude protein intake, N-intake,
N-absorbed, N-balance, and apparent N-digestibility followed similar trend.
There were significant differences (P<0.05) between the treatment groups in
all the parameters. All the animals were in positive N-balance indicating that
their maintenance requirements were satisfied by all the diets. The decrease in
value of N-intake, N-absorbed, N-balance and apparent N-digestibility as the
value of BCB increases could be due to traces of anti-nutrients (trypsin,
Hydrogen cyanid, Sapronin) in the diet. However, 10% inclusion level of boiled
Caladium bicolor was best utilized by the animal, therefore could be
recommended as the optimal inclusion level in WAD goat diet.
Keywords: Caladium bicolor; West African dwarf goat; digestibility;
non-conventional
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