Calcium References

Breves, G. et al. (1987) Effects of dietary phosphorus depletion in sheep on dry matter and organic matter digestibility. J. Anim. Physiol. Anim. Nutr. 58: 281-286.

Clauss, M, et al. (2003) Studies on feed digestibilities in captive Asican elephants (Elephas maximus). J. Anim. Physiol. Anim. Nutr. 87: 160-173.

Durand, M. et al. (1988) Influence of major minerals on rumen microbiota. J. Nutr. 118: 249-260.

Frye, F. 1991. Biomedical and Surgical A spects o f C aptive R eptile H usbandry. Krieger Publishing Co. Malabar, Florida.

Highfield, A. 1990. Keeping and Breeding Tortoises in Captivity. England, R and A Publishing Limited.

Innis, C. (1994) Considerations for Formulating Captive Tortoise Diets. Bulletin of the Association of Reptilian and Amphibian, Vol. 4, No. 1.

Kamphues, J. et al. (1991) Calcium metabolism of rabbits as an etiological factor for urolithiasis. J. Nutr. 121: S95-S96.

Leon, B. et al. (1979) Calcium, phosphorus and magnesium excretion in the rock hyrax. Comp. Biochem. Physiol. A. 64: 67-72.

Liesegang, A. et al. (2001) Influence of different dietary calcium levels on the digestibility of Ca, Mg, and in captive-born juvenile

Galapagos giant tortoises (Geochelone nigra). Zoo Biol. 20: 367-374.

Komisarczuk, S., et al. (1987) Effects of phosphorus deficiency on rumen microbial activity associated with the solid and liquid phase of a fermentor (RUSITECH). Repro. Nutr. Dev. 27: 907-919.

Stadermann, B. et al. (1992) Calcium and Magnesium absorption. bei Rauhfutter oder Mischfuffer. Pferdeheilkunde. Special Issue 1: 77-80.