Effect of five different dietary vitamin-mineral premixes and two rearing systems on selected vitamin and iron deposition in eggs at the late laying stage

Authors:
O. A. Ogunwole, A. Y. P. Ojelade, O. D. Akinleye, M. D. Olumide

Volume 24, Issue 1;
Pages: 19-25; 2018
ISSN: 2069-0053 (print) (former ISSN: 1453-1399), Agroprint;
ISSN (online): 2068-9551
Abstract:
Effects of different commercial Vitamin-Mineral Premixes (VMP) and Housing Systems (HS) on selected vitamin and iron deposition in eggs at the late laying stage were evaluated. In a 2 5 factorial arrangement and completely randomized design, Bovan Nera layers (n=480) aged 60 were allotted to five treatments of 48 hens per treatment in both HS, each replicated six times comprising eight birds per replicate. Formulated basal diet was supplemented with 0.25% of five different VMP to obtain corresponding treatments 1- 5, Supplemental VMP had no effect (P>0.05) on vitamin A and biotin deposition contrary to niacin and iron (P<0.05). Vitamin A (690.68 IU/retinol equivallent) and biotin (21.46mg/100g) depositions were higher in DL eggs contrary to higher niacin (0.39mg/100g) (P<0.05) in BC. Iron deposition was independent (P>0.05) of HS, so also, was interaction of VMP and HS (P>0.05) on egg vitamin A and biotin. Hence, vitamin A and biotin in egg were not altered by VMP supplementation. Iron deposition was however, influenced by HS, while interactions of HS and VMP enhanced deposition of niacin and iron.
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