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Dynamic role of cholecalciferol in commercial chicken performance
Published online by Cambridge University Press: 05 September 2013
Abstract
This review paper delineates how vitamin D3 and its metabolitesproduce beneficial effects on the performance of both broiler and egg layingchickens. This review provides information on the evaluation of cholecalciferolsources, metabolites, requirements for cholecalciferol in birds, its effect onhatchability of fertile eggs and its impact on immunity. Notable beneficialeffects have been seen on body weight gain, feed intake and feed efficiency inboth broilers and laying hens. Cholecalciferol can provide beneficial effects onegg quality by increasing egg production, egg and shell weight, and shellstrength by increasing thickness. It has a significant effect on the immunesystem and can help in the suppression of certain autoimmune diseases. Thepossible mechanisms contributing to these effects and the factors thought toexplain the variability in these responses are discussed. Overall,cholecalciferol and its metabolites have been shown to greatly improve theperformance of both types of commercial chickens, which can lead to enhancedproduction and a reduction in feed costs. The authors recommend a modifiedfeeding programme containing higher levels of vitamin D3supplementation than the NRC (1994) requirements in order to allow forsufficient skeletal growth in the starter and finisher diets of broilers.
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- Copyright © World's Poultry Science Association 2013
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