Document Type : Research Paper

Authors

1 PhD student, Animal Science Department, Faculty of Agriculture, Urmia University

2 Animal Science Department, Faculty of Agriculture, Urmia University

Abstract

This study was conducted by 360 lying Japanese quail (6 wk old) in a 3*3 factorial arrangement (9 treatments and 5 replicates each) to investigate the effects of folic acid (0.0, 4.0 or 8.0 mg/kg) and pyridoxine (0.0, 0.3 or 6 mg/kg) on laying performance and egg yolks 5-methyl tetrahydrofolate content. The results showed that folic acid or pyridoxine had no effects on feed intake, egg production, feed conversion ratio, yolk and white percentage, egg content weight and haugh unit of the eggs (P>0.05).The 5- methyl tetrahydrofolate content of the eggs was affected by folic acid supplementation and it was increased from 808.62 microgarm/g for control birds to 840.84 and 1164.77 microgarm/g respectivly for 4 and 8 mg/kg folic acid fed birds (P<0.01). In conclusion, dietary supplementation of folic acid to lying Japanese quail diets had no effects on performance but consumption of 8 mg/kg folic acid increases the 5-methyl tetrahydrofolate content of yolk.
Key Words: Folic acid, Japanese quail, pyridoxine, performance, 5-methyltetrahydrofolate.

Keywords

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