Choline in the Nutrition of Laying Hens

Abstract

Lucas, Norris and Heuser (1946) have reported observations on the choline requirements of hens. We have carried out an experiment of similar nature with results pointing in the same direction.New Hampshire pullets which had been in production for approximately six months were transferred to laying cages and given an adjustment period. Following this period the birds were divided into groups as nearly uniform as possible upon the basis of previous production and body weight records. Twelve birds were used in group 1, (negative control) while six birds were used in each of the other groups. The rations used were fed as all-mash rations. The experiment was of 84 days’ duration and was divided into three periods of 28 days each. Daily records of egg production were kept and records of feed consumption and body weight were taken at the end of each 28 day period.The basal rations used .