Atteh, J. O. and S. Leeson. 1983. Influence of increasing dietary calcium and magnesium levels on performance, mineral metabolism, and egg mineral content of laying hens. Poult. Sci. 62:1261-1268.
Balnave, D., I. Yoselewitz and R. J. Dixon. 1989. Physiological changes associated with the production of defective egg-shells by hens receiving sodium chloride in the drinking water. Br. J. Nutr. 61:35-43.
Chen, P. S. Jr., T. Y. Toribara and H. Warner. 1956. Microdetermination of phosphorus. Anal. Chem. 28:1756-1758.
Chen, W. L. and T. F. Shen. 1989. Comparative studies on the utilization of calcium between laying Tsaiya duck and Leghorn hen. Asian-Aust. J. Anim. Sci. 2(2):67-75.
Cheng, T. K. and T. F. Shen. 1985. The fluctuation of serum total calcium and inorganic phosphorus levels within a single day in domestic laying duck (Tsaiya). J. Chin. Soc. Anim. Sci. 14(3-4):99-103 (In Chinese).
Ciba-Corning Diagnostics Corp., 1988. Blood Gas System:Operator’s Manual. pp. 2.1-2.11. Medfield, MA.
Hamilton, R. M. G. and B. K. Thompson. 1980. Effects of sodium plus potassium to chloride ratio in practical type diets on blood gas levels in three strains of White Leghorn hens and the relationship between acid-base balance and egg shell strength. Poult. Sci. 59:1294-1303.
Hodges, R. D. 1970. Blood pH and cation levels in relation to eggshell formation. Ann. Biol. Anim. Biochem. Biophys. 10:199-213.
Izat, A. L., F. A. Gardner and D. B. Mellor. 1985. Effects of age of bird and season of the year on egg quality. 1. Shell quality. Poult. Sci. 64:1900-1906.
Koch, J., E. G. Buss and R. F. Wideman. 1984. Blood ionic calcium responses of hens from thick-shell and thin-shell lines to ethyleneglycol-bis (b-aminoethylether)-N, N'-tetraacetic acid injections. Poult. Sci. 63:172-175.
Lee, S. R., T. F. Shen and Y. N. Jiang. 2002. Effects of age and lines on blood parameters in growing Tsaiya ducks. J. Chin. Soc. Anim. Sci. 31(3):201-208.
Lee, S. R., J. F. Huang, N. S. Sheu, S. Y. Chen, B. J. Chen, Y. N. Jiang, J. J. L. Tai and C. Tai. 1992. Study on the performance of brown Tsaiya duck (Anas platyrhynchos var. domestica). Taiwan Livestock Res. 25(1):35-48 (In Chinese).
Lee, S. R., S. T. Pan, S. T. Shyu and B. J. Chen. 1991. Study on the cage-feeding system for laying Tsaiya duck(Anas platyrhynchos var. domestica). Taiwan Livestock Res. 24(2):177-185 (In Chinese).
Lee, S. R. and Y. P. Lee. 1990. The relationship between behavior and performance of laying brown Tsaiya. Proceedings of 5th AAAP Animal Science Congress, 27 May-1 June, 1990. Taiwan, Vol 3, p. 224.
Mongin, P. 1968. Role of acid-base balance in physiology of egg shell formation. World’s Poult. Sci. J. 24:200-230.
Mongin, P. and B. Sauveur. 1979. Plasma inorganic phosphorus concentration during egg shell formation- Effect of the physical form of the dietary calcium. Br. Poult. Sci. 20:401-412.
Parsons, A. H. and G. F. Combs, Jr. 1981. Blood ionized calcium in the chicken. Poult. Sci. 60:1520-1524.
Paul, H. S. and D. C. Snetsinger. 1969. Dietary calcium and phosphorus and variations in plasma alkaline phosphatase activity in relationship to physical characteristics of egg shells. Poult. Sci. 48:241-250.
Roland, D. A. 1979. Egg shell quality. II. Effect of dietary manipulations of protein, amino acid, energy and calcium in young hens on egg weight, shell weight, and egg production. Poult. Sci. 59:2047-2054.
SAS Institute Inc. 1996. SAS$\circledR$System for Mixed Models. SAS Institute Inc., Cary, North Carolina.
Simmons, G. S. and D. J. S. Hetzel. 1983. Time relationships between oviposition, ovulation and egg formation in Khaki Campbell ducks. Br. Poult. Sci. 24:21-25.
Van de Velde, J. P., F. C. Ginkel and J. P. W. Vermeiden. 1986. Patterns and relationship of plasma calcium, protein and phosphorus during the egg laying cycle of the fowl and the effect of dietary calcium. Br. Poult. Sci. 27:421-433.
Wideman, R. F. Jr. and E. G. Buss. 1985. Pecent shell and plasma mineral concentrations in three strains of domestic fowl selected for thick or thin egg shell production. Poult. Sci. 64:388-395.