TITLE:
Bioavailability and Immunity Response in Broiler Breeders on Organically Complexed Zinc Supplementation
AUTHORS:
Neeta Soni, Sumanta Kumar Mishra, Rajakishore Swain, Abinash Das, Biswal Chichilichi, Kamdev Sethy
KEYWORDS:
Organic Zinc; Immunity; Bioavailability; Broiler Breeders
JOURNAL NAME:
Food and Nutrition Sciences,
Vol.4 No.12,
December
12,
2013
ABSTRACT: Two hundred and sixty four broiler
breeder hens of 32 weeks of age were distributed randomly in four dietary treatments.
The dietary treatments were T0: Broiler breeder ration containing 40
ppm zinc (basal 29.8 ppm + 10.2 ppm inorganic zinc), T1: T0 + organic zinc (zinc methionine) @ 20 ppm, T2: T0 + organic zinc @ 40 ppm and T3:
T0 + organic zinc @ 60 ppm. The experiment was continued from 32 to
48 weeks of age. At 48 weeks, the weight of lymphoid organs, zinc levels in
organs and immunity response were determined. The faecal zinc level was
determined at monthly interval. The weight lymphoid organs of different
treatment groups (both organic and inorganic zinc fed groups) of the broiler
breeders did not differ significantly (P > 0.05). The cellular immune response of
breeder birds to PHA-P was significantly (P 0.05) higher in group T3 than the rest of treated groups. The antibody titre to SRBC differed among the
treated groups. The zinc content of serum of broiler breeders of all the groups
did not differ significantly (P > 0.05) in all the
periods of study. Zinc content in liver and tibia of broiler breeders in
different dietary treatments of zinc differed significantly (P 0.05) with higher levels were obtained
on increasing zinc concentration in the diet. The zinc level in the spleen and
kidney of the broiler breeders in different dietary treatments did not differ
significantly (P > 0.05). The average zinc content in the
faeces of broiler breeder during 35 to 43 week of age did not differ
significantly (P > 0.05) among the treated groups. At 48
weeks of age, zinc content of the faeces of T3 was found to be
significantly (P 0.05) higher than the rest of treated
groups. Similarly, during the overall experimental period analysis, it was
found that zinc levels in the faeces of T2 and T3 were
significantly (P 0.05) higher than T1 and T0.