Influence of Vitamin-E and Selenium Supplementation on the Growth Performance and Antibody Responses of Layer
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Date
2010
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Abstract
An experiment was conducted to study the effect of vitamin E and selenium yeast supplementation on
the growth performance and some immune parameters with two hundred and ten commercial straight run
day-older layer chicks. The chicks were randomly allotted into seven treatment groups with three
replicates often chicks each. The chicks were fed basal diet (Ti), basal diet with 100 mg/kg vitamin E
(T2), basal diet with 200 mg/kg vitamin E (T?), basal diet with 0.2 mg/kg selenium (T4), ba.sal diet with
0.4 mg/kg selenium (T5), basal diet with 100 mg/kg vitamin E plus 0.2 mg/kg selenium (T(,), and basal
diet with 200 mg/kg vitamin E plus 0.4 mg/kg selenium (T?) for eight weeks period. No significant
difference was found in the body weight of layer chicks for the first four weeks among the treatment
groups but the body weight ofgroups (T* and T7) receiving both vitamin E and selenium was significantly
increased {P<0.05) at the end of 8 weeks period. The feed intake of layer chicks did not vary significantly
between treatment groups. Chicks receiving supplements of 100 mg vitamin E/kg and 0-2 mg selenium/kg
produced significantly higher HA litre against SRBC (P<0.0/), HI litre against NDV (P<0.0J) and
QAGPT litre against IBDV {P<0.()i). The results suggested that vitamin E and selenium might provide
higher level of protection against natural immune challenges.