Biomaterial Database

Calcium kinetics in male white-tailed deer. 1984

D C Stephenson, and R D Brown

Calcium kinetic analysis was combined with calcium balance data on two 2-year-old and two 4-year-old male white-tailed deer. There were three 10-day trials. Trial 1, February 3-13, was conducted after velvet shedding. Trial 2, May 26-June 5, was conducted after about a month of slow antler growth. Trial 3, August 18-28, was conducted shortly before velvet shedding, after the peak of antler growth. Significant differences (P less than 0.05) between trials 1 and 2 included increased calcium absorption and fractional calcium absorption from the intestine. Skeletal resorption decreased, resulting in an increased calcium balance. Significant differences (P less than 0.05) between trials 1 and 3 included increased skeletal accretion and total calcium flow into the pool. Nonsignificant differences (P greater than 0.05) between trials 2 and 3 included decreased average intestinal calcium absorption and increased skeletal resorption resulting in a decreased calcium balance. The younger deer had nonsignificantly lower (P greater than 0.1) endogenous fecal and significantly lower (P less than 0.1) urinary calcium excretions. The younger deer also maintained higher fractional absorption rates from the intestine than the older deer. The percent decrease in skeletal resorption and increase in calcium balance was greater in the younger deer between trials 1 and 2 and between trials 1 and 3.

UI	MeSH Term	Description	Entries
D007700	Kinetics	The rate dynamics in chemical or physical systems.
D008297	Male		Males
D008954	Models, Biological	Theoretical representations that simulate the behavior or activity of biological processes or diseases. For disease models in living animals, DISEASE MODELS, ANIMAL is available. Biological models include the use of mathematical equations, computers, and other electronic equipment.	Biological Model,Biological Models,Model, Biological,Models, Biologic,Biologic Model,Biologic Models,Model, Biologic
D002118	Calcium	A basic element found in nearly all tissues. It is a member of the alkaline earth family of metals with the atomic symbol Ca, atomic number 20, and atomic weight 40. Calcium is the most abundant mineral in the body and combines with phosphorus to form calcium phosphate in the bones and teeth. It is essential for the normal functioning of nerves and muscles and plays a role in blood coagulation (as factor IV) and in many enzymatic processes.	Coagulation Factor IV,Factor IV,Blood Coagulation Factor IV,Calcium-40,Calcium 40,Factor IV, Coagulation
D003670	Deer	The family Cervidae of 17 genera and 45 species occurring nearly throughout North America, South America, and Eurasia, on most associated continental islands, and in northern Africa. Wild populations of deer have been established through introduction by people in Cuba, New Guinea, Australia, New Zealand, and other places where the family does not naturally occur. They are slim, long-legged and best characterized by the presence of antlers. Their habitat is forests, swamps, brush country, deserts, and arctic tundra. They are usually good swimmers; some migrate seasonally. (Walker's Mammals of the World, 5th ed, p1362)	Deers
D005243	Feces	Excrement from the INTESTINES, containing unabsorbed solids, waste products, secretions, and BACTERIA of the DIGESTIVE SYSTEM.
D000375	Aging	The gradual irreversible changes in structure and function of an organism that occur as a result of the passage of time.	Senescence,Aging, Biological,Biological Aging
D000818	Animals	Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA.	Animal,Metazoa,Animalia
D000999	Antlers	The horn of an animal of the deer family, typically present only in the male. It differs from the HORNS of other animals in being a solid, generally branched bony outgrowth that is shed and renewed annually. The word antler comes from the Latin anteocularis, ante (before) + oculus (eye). (From Webster, 3d ed)	Antler