STUDIES ON ENZYME SUPPLEMENTATION ON PERFORMANCE, ORGAN CHARACTERISTICS AND ECONOMIC ANALYSIS OF POULTRY FED DRIED RUMEN DIGESTA.

AUTHOR: OSEGBUE,  ANTHONY  IKECHUKWU (MSc)

DEPARTMENT: ANIMAL SCIENCE TECHNOLOGY

AFFILIATION: FEDERAL UNIVERSITY OF TECHNOLOGY, OWERRI

Three experiments were conducted to evaluate the effect of enzyme
(Hamacozyme,® a cellulolytic enzyme) supplementation on the feeding
value of dried rumen digesta meal for poultry. In the first experiment, five
broiler starter diets were formulated to contain dried rumen digesta at 0%,
2.5%, 5.0%, 7.5% and 10,0% (with 0.20% enzyme supplementation)
respectively. Each diet was fed to 30, 2-week old broiler chicks for 21
days. In the second experiment, four experimental broiler finisher diets
were formulated incorporating dried rumen digesta at 0%, 10%, 20% and
30% (with 0.20% enzyme supplementation) respectively. Each diet was
fed to 36, 5- week old broiler finisher birds for 21 days. In the third
experiment, four experimental layer diets were formulated to contain dried
rumen digesta at 0%, 10% 20% and 30%, (with 0.20 enzyme
supplementation). Each diet was fed to 30, (4-months into lay) laying hens
for 84 days. In the first experiment, there were significant (P<0.05)
differences in feed intake, body weight gain, feed conversion ratio and
feed cost/kg weight gain among the groups. In the second experiment,
there were significant differences in feed intake, feed conversion ratio,
feed cost/kg weight gain, body weight gain, ash, crude fibre, crude protein
and dry matter digestibility among the groups.
xv
However there was no significant difference (P>0.05) among the group in
ether extract digestibility score. In the layer experiment, there were
significant differences (P<0.05) in feed intake, hen – day – egg production,
feed conversion ratio, egg weight and Haugh Unit among the groups.
However, there were no significant differences (P>0.05) among the groups
in shell thickness, yolk and albumen indices and egg circumference
respectively. The results of these trials suggested that 0.20%
Hamacozyme® supplementation of diets, containing dried rumen digesta,
could improve the performance of broiler starter at 10%, broiler finisher at
30% and laying hens at 30% dietary levels of Dried rumen digesta meal
respectively.

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