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Higher dietary vitamin E and selenium fed during different age periods: Influence on growth performance of broiler chicks

PRAVEEN K.TYAGI, PRAMOD K.TYAGI, A.B.MANDAL,
A.V.ELANGOVAN AND R.P.SINGH
Central Avian Research Institute, Izatnagar - 243 122 (UP)

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Studies were conducted to determine the effect of higher concentration of supplemental vitamin E and selenium fed through diet during various age periods on the growth performance of broiler chicken. Two separate basal diets for starting (0-3 wks) and finishing (4-7 wks) phases were formulated as per BIS (1992) recommendations for broiler chickens. To these basal diets, vitamin E and inorganic selenium were added @ 225 IU vitamin E and 0.5 mg Se per kg of diet during various age periods and four dietary schedules (treatments) were adopted as per the following feeding regimen: (D 1)-basal diet without supplemental vitamin E and selenium fed during 0-7 weeks of age (control), (D 2)-basal diet supplemented with 225 IU vitamin E and 0.5 mg Se per kg of diet fed continuously during 0-7 weeks of age, (D 3)-basal diet supplemented with 225 IU vitamin E and 0.5 mg Se per kg of diet fed during 0-3 weeks of age and unsupplemented basal diet fed during 4-7 weeks of age, and (D 4)-unsupplemented basal diet fed during 0-3 weeks of age and basal diet supplemented with 225 IU vitamin E and 0.5 mg Se per kg diet fed during 4-7 weeks of age. Day old, straight run broiler chicks (n=160) were distributed randomly into 16 groups of 10 chicks each. Each of the four dietary regimens were offered as mash ad libitum to four replicated groups of chick for a period of seven weeks (0-7 weeks of age). The growth performance of broilers with respect to gain in body weight, feed intake and feed conversion efficiency during starting (0-3 wks), finishing (4-7 wks) and overall (0-7 wks) phases of growth did not differ significantly (P>0.05) by dietary treatments. It is concluded that a level of 225 IU vitamin E and 0.5 mg selenium per kg in diet did not influence the growth performance of broiler chicken.

Source : IPSACON-2005
 
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