The Effect of Choline and Vitamin B12 Concentrates on Growth in the Turkey Poult

Abstract

Gillis and Norris (1949a, b) and Schafer, Salmon and Strength (1949) have reported a sparing effect of vitamin B12 on the chick’s requirement for methylating compounds. McGinnis et al. (1949) observed that turkey poults responded differently to vitamin B12 supplements produced by fermentation with different organisms. In the experiment reported here, two commercial products, (1) a vitamin B12 concentrate absorbed on charcoal and (2) an animal protein factor concentrate, were fed to turkey poults with various levels of dietary choline. The entire experiment was replicated three times, with ten poults per lot in the first and second replicates, and five per lot in the third replicate. Day old Broad Breasted Bronze poults from the poultry department’s breeding flock were used. The diet fed the breeding flock contained five percent fish meal and five percent meat scraps.The basal diet fed had the following percentage composition: yellow corn meal, 50.9; crude .