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Indian Journal of Poultry Science
Year : 2005, Volume : 40, Issue : 3
First page : ( 235) Last page : ( 240)
Print ISSN : 0019-5529.

Effect of supplementation of vitamin E and selenium on the growth and immune response in broilers

Shaik K.K. Ameer, Eswaraiah, Reddy V. Ravinder, Rao A.Nageswara, Raju M.V.L.N.

Department of Livestock Production & Management College of Veterinary Science, ANGR Agricultural University, Rajendranagar, Hyderabad - 500 030 (AP)

Received:  25  June,  2003; Accepted:  10  September,  2005.

Abstract

A feeding trial of 7 weeks duration was conducted on 360 one day old broiler chicks raised in battery brooders to study the effect of supplementation of vitamin E, selenium and their combinations on growth and immune response. Nine experimental diets were formulated by supplementing to the reference diet with of two levels of Vit.E (150 and 300 IU/kg), two sources of Se (inorganic and organic each at 0.15 mg/kg) and their combinations. On each diet, 5 replicates of 8 birds were fed. Body weight, feed intake, livability, weights of bursa and spleen and dressing yields were not influenced by the expt.diets. However, the feed/gain significantly improved on Vit.E (300 IU/kg) level and Vit.E (150 IU/kg) with organic Se (0.15 mg/kg) diet. Vit.E at 150 IU/kg with organic Se or 300 IU/kg with inorganic Se significantly (P<0.05) lowered the abdominal fat content. Cell mediated immune (CMI) response was significantly (P<0.05) higher on Se diets, Vit.E at 150 IU/kg and the combination of Vit.E at 300 IU/kg with either of the sources of Se. Vit.E at 300 IU/kg lowered (P<0.05) the HL ratio while it increased (P<0.05) the ratio when supplemented along with either of the sources of Se. The humoral immune response to SRBC was significantly (P<0.05) higher on all expt.diets than reference. Vit.E or the sources of Se did not influence immune response to NDV. However, the combination of organic Se with either levels of Vit. E significantly (P<0.05) increased immune response. In response to E.coli challenge, the growth depression was significantly (P<0.05) less on all expt.diets than reference. Lesion score on all expt.diets was comparable to reference diet except Vit.E at 300 IU/kg or inorganic Se, which recorded, significantly (P<0.05) lower score. It is concluded that Vit.E at 150 IU/kg and organic Se at 0.15 mg/kg may be supplemented to broiler diets for efficient growth and by immune response.

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Key words

Vit.E, selenium, growth, immunity, broilers.

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