Greener Journal of Agricultural Sciences Vol. 7 (3), pp. 074-081, May 2017.

 ISSN: 2276-7770 

Research Article

Manuscript Number: 052217067



Effect of Dietary Inclusion of Polyalthia longifolia Leaf Meal as
Phytobiotic Compared with Antibiotics on the Nutrient Retention, Immune
Response and Serum Biochemistry of Broiler Chicken




department at Dan-malafia Farms Limited, Ibadan.


A 45-day feeding trial was conducted to evaluate the
effect of dietary inclusion of Polyalthia
leaf meal as phytobiotic compared with antibiotics on the
nutrient retention, immune response and serum biochemistry of broiler chicks
fed corn-soya meal diet. One hundred and fifty day old chick (Ross 308) of
mixed sex was divided into five groups with three replicates, each of ten birds
in a completely randomized design (CRD). Group 1was fed on basal diet without
feed additives, group 2 was fed on basal diet supplemented with the antibiotic
(Erythromycin) at 25mg/kg), group 3,4 and 5 were fed basal diets supplemented
with Polyalthia longifolia leaf meal
(PLM) at levels 1.5, 2.5 and 3.5% respectively. The basal diet was formulated
to meet the nutritional requirements of growing birds according to NRC (1994),
experimental parameters covered nutrient retention, immune response and some
serum biochemical indices. The result revealed that there was a no significant
(P>0.05) differences among all treatments in the values of protein
retention, fat retention and the serum parameters measured. However,
significant influences (P<0.05) were observed for fibre retention and the
immune response of the birds to ND and IBD after vaccination.

It can be concluded based on the data from the
nutrient retention, immune response and those from serum biochemical parameters
that PLM could be incorporated up to 3.5% level in the diet of broiler


Key words:  broiler chickens, serum biochemistry, nutrient
retention, immune response.

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