6. Additional references which may be pertinent. 
Allen, T.E., and L.W. Bobr, 1955. The fertility of fowl sperma- 
tozoa in glycerol diluents after intrauterine insemination. 
Poultry Sci. 34 (5) : 1167-1169. 
Allen, T.E., and F. Skaller, 1958. High fertilizing capacity 
of highly diluted fowl semen and observed differential 
fertility attributable to breed or strain of dam, Poultry 
Sei. 37 (6) : 1429-1435. 
Bade, M.L., H. Wiegers, and L. Nelson, 1956. Oxygen uptake, 
motility and fructolysis of turLey spermatozoa. J. App. 
Physiol. 9 : 91-96. 
Bodbonoff, P.D., and C.S. Shaffner, 1954. The effect of pH on 
in vitro survival, metabolic activity, and fertilizing 
capacity of chicken semen. Poultry Sci. 33 (4) 665-669, 

Brown, K.I., 1959. Electrolyte composition and freezing point 
doppeseT ee of turkey seminal fluid. Poultry Sci. 38 (4) : 
0 ™ 06. 
Clark, C.E., and C.S. Shaffner, 1960. The fertilizing capacity 
of frozen chicken sperm and the influence of related in 
vitro processes. Poultry Sci. 39 (5) : 12131220. 
Cooper, D.M., and J.G. Rowell, 1957. Laboratory prediction of 
the fertilizing capacity of cock semen. Poultry Sci. 36 
(2) 3: 284-285, 
Cooper, D.M., and J.G. Rowell, 1958. Relations between fertility, 
embryonic survival and some semen characteristics in the 
chicken. Poultry Sci. 37 (3) : 699-707. 
Davis, D.E., 1952. Social behavior and reproduction. Auk 69 ; 
171-182. 
De Muelenaere, H.J.H., and GeV. Quicke, 1958. Studies on the 
biochemistry of cock semen. 2. The problem of bacterial 
contamination. South African J. Agre Scie 12 139-149. 
Friars, GeW., 1957. The effect of lactic acid on the functional 
capacity of turkey semen in vivo. Poultry Sci. 36 (2) : 
45 4a45S, : 
Gowe. R.S., and JR. Howes, 1956. The effect of the addition of 
L-thyroxine to fowl semen. Poultry Sci. 35 (5) : 983-990. 
Grigg, GeW., 1957. The structure of stored sperm in the hen and 
the nature of the release mechanism. Poultry Sci. 36 (2) : 
450-451. 
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