ORIGINAL PAPER
The efficacy of vitamin E-polyethylene glycol
complex on growth performance, chicken meat
quality and immunity in broilers
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1
College of Animal Resources, Kangwon National University,
Chunchon 200-701, Korea
2
College of Veterinary Medicine, Seoul National University,
Seoul 151-742, Korea
Publication date: 2005-01-31
Corresponding author
T.-W. Hahn
College of Animal Resources, Kangwon National University,
Chunchon 200-701, Korea
J. Anim. Feed Sci. 2005;14(1):125-138
KEYWORDS
ABSTRACT
The experiment was conducted to evaluate the efficacy of vitamin E-polyethylene glycol
complex (VE-PEG) in commercial broilers. Three hundred and thirty Ross broiler chickens,
4 days old, were randomly distributed and allotted to 5 dietary treatments for six weeks. The
vitamin E (VE) levels in the 5 dietary treatments were, mg/kg: 1. 0 (negative control), 2. 200
α-tocopheryl acetate, 3. 10 VE-PEG, 4. 20 VE-PEG, and 5. 50 VE-PEG. Overall study showed
that supplementation of VE has improved the weight gain at 20 mg/kg, 50 mg/kg VE-PEG and 200
mg/kg VE levels, over those fed 0 or 10 mg/kg VE-PEG, but the feed intake and feed conversion
efficiency remained unaffected. Bone resistance was improved in all VE supplemented diets than
control. Significantly (P<0.05) higher phosphorus content in bone was recorded at 50 mg/kg VEPEG fed group. The carcass traits like dressing percentage, breast meat, abdominal fat and the meat
colour did not differ significantly due to treatments. The serum levels of VE and its concentration
in the muscle showed positive linear correlation with the levels supplemented. The thiobarbituric
acid reactive substances (TBARS) (mg/kg) levels in meat also suggested that supplemental VE has
a protective role in rancidity. The cytotoxic T cells (CD8) and B-lymphocyte cells were higher in 50
mg/kg VE-PEG fed group. VE did not affect the infectious bronchitiserase and Newcastle disease
antibody titres. Overall, it can be concluded that VE at higher levels in both α-tocopheryl acetate
and VE-PEG form was found beneficial for the growth, immunity and increased the chicken meat
quality.
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