The B-Vitamin Content of Eggs as Influenced by Antibiotics in the Laying Ration

The Influence of Sex-linked Barring and Rate of Feathering Genes, and of Stock, upon Egg Riboflavin and Vitamin B12

“…The individual hen differences were not tested for statistical significance. Teeri et al (1959) found that the addition of oxytetracycline to a basal ration significantly increased egg vitamin Bi 2 concentration over that in eggs from hens fed only a basal ration.…”