Price, Redo, and ©. A. Bottorff, 1954. Effect of Enheptin-A and 
Enheptin on egg production, fertility, hatchability and 
weight gains in turkeys. Poultry Sei. 33:952. 
Price, ReJd., and P.E. Gingher, 1956. Effect of Enheptin-A on 
egg production, fertility, hatchability and weight gains 
in ohickens. Poultry Sei. 35:327. 
Pun, C.F., 1958. The sex ratio in the progeny of cestrogen- 
treated parents in the Brown Leghorn. Poultry Sei. 
37 2507=311. 
Quisensberry, JeH., and Rel. Atkinson, 1953. Effects of whole 
body irradiation on reproduction of chickens. Paultry 
| Sei. 32:2921-922, 
Ralph, C.l., and RM. Fraps, 1959. Effect of hypothalamic 
lesions on Progesterone-induced ovulation on the hen. 
Endocrinology 65:819-824, 
Ralph, C.L., and RM. Fraps, 1960. Induction of ovulation in the 
hen by injection of progesterone into the brain. 
Endocrinology 66:269<272. 
Riedel, BeR., 1950. The effect of sulfamerazine upon egg pro-= 
duction and hatchability. Poultry Sei. 29:621~622, 
Ringrose, R.D., Re Hinkson, and AE. Teeri, 1961. Observations 
on the niacin requirement of the laying hen. Poultry Sci. 
403144821449, ) 
Rogler, J.C.e, HeE. ParkeP, FN. Andrews, and C.W. Carrick, 1959. 
The effects of and iodine deficiency on embryo development 
and hatchability. Poultry Sci. 38:398-405. 
Ross, E., and M, Sherman, 1960. The effect of selected insect- 
icides on growth and egg production when gdministered con- 
tinuously in the feed. Poultry Sei. 39:1203—-1211. 
Scott, M.L., and T.S. Nelson, 1955. Quantitative studies on 
vitamin E in turkey hatchability. Poultry Sei. 34:1233-1234,. 
Sherwood, D.He, 1959. Effect of polybar 3 on egg production. 
Poultry Sci. 38:491-492, 
Sherwood, DeH., TeTe Milby, and WeA. Higgins, 1956. The effect 
of nicarbazin on reproduction in White Rock breeder hens. 
Poultry Scie 3531014-1019. 
Shultz, FeT., O.R. Grau, and P.A. Zweigart, 1953. Vitamin supple- 
ments and squab production. Poultry Scie 32:762=768. 
70 
