EFFECT OF ORGANIC AND INORGANIC SELENIUM WITH AND WITHOUT VITAMIN E ON
IMMUNE SYSTEM OF BROILERS
M.I. Hussain, S.A. Khan, Z.I. Chaudhary, A. Aslam,K. Ashraf1 and M.F. Rai
Department of Pathology, and
1Department of Parasitology, University
of Veterinary
and Animal Sciences, Lahore-54000, Pakistan
Abstract
The
present project was designed to investigate effects of organic and inorganic
selenium with and without vitamin E on the immune system of broiler chickens.
For this purpose, 130 (day-old) broiler chicks were divided into three groups A,
B (60 chicks each) and C (10 chicks). Group A was divided into six subgroups A1,
A2, A3, A4, A5 and A6 which were fed on organic selenium at dose rates of 0.25,
0.25, 0.5, 0.5, 1.0 or 1.0 mg/kg and vitamin E at the dose rates of 0, 200, 0,
200, 0 or 200 IU/kg, respectively. Group B was also divided into six subgroups
B1, B2, B3, B4, B5 and B6, which were fed on inorganic selenium at dose rates of
0.25, 0.25, 0.5, 0.5, 1.0 or 1.0 mg/kg and vitamin E at the dose rates of 0,
200, 0, 200, 0 or 200 IU/kg, respectively. Group C (control) received no
selenium or vitamin E. Parameters studied were haemagglutination inhibition
antibody titre against Newcastle
disease virus, pathological examination of lymphoid organs, lymphoid organs
weight/body weight ratio and growth traits. Results showed that the effects of
organic selenium supplementation were better than that of inorganic selenium.
Moreover, the effects of organic or inorganic selenium with vitamin E were
better than the supplementation of organic or inorganic selenium without vitamin
E.