References
- AOAC . 1984 . Official Methods of Analysis of the Association of Official Analytical Chemists , 14th edn , Washington, DC : AOAC . Method No. 43.229
- Cravens , W.W. , Sebesta , E.E. , Halpin , J.G. and Hart , E.B. 1943 . Effect of vitamin B6 on egg production and hatchability . Poultry Science , 22 : 94 – 95 .
- Ferguson , T.M. , Whiteside , C.H. , Creger , C.R. , Jones , M.L. , Atkinson , R.L. and Couch , J.R. 1961 . B‐vitamin deficiency in the mature turkey hen . Poultry Science , 40 : 1151 – 1159 .
- Krueger , K.K. 1980 . Observations on feeding commercial turkey breeder hens 1980 , Columbus, OH : Hatchery Management Clinic, Poultry and Egg Institute of America .
- National Research Council . 1984 . Nutrient Requirements of Poultry , 8th edn , Washington, DC : National Academy of Science .
- Robel , E.J. 1983 . The effect of age of breeder hen on the levels of certain vitamins and minerals in turkey eggs . Poultry Science , 62 : 1751 – 1756 .