Effects of varying the amounts of dietary calcium on selenium metabolism in dairy calves

Journal Article · Tue Mar 31 23:00:00 EST 1987 · J. Dairy Sci.; (United States)

DOI:https://doi.org/10.3168/jds.S0022-0302(87)80080-2· OSTI ID:6020209

Alfaro, E; Neathery, M W; Miller, W J; Gentry, R P; Crowe, C T; Fielding, A S; Etheridge, R E; Pugh, D G; Blackmon, D M

Influence of dietary Ca on Se metabolism was studied with 16 intact male Holstein calves averaging 86 kg. Calves were assigned randomly and fed one of four diets containing .17, .67, 1.31, and 2.35% Ca at 3% of their body weight for 4 wk. The diets contained .062 ppm Se and .34% P. Four days prior to the end of the experiment, calves were dosed orally with radioactive /sup 75/Se. Dietary Ca had no significant effect on /sup 75/Se absorption. There was a slight curvilinear relationship between apparent /sup 75/Se absorption and dietary Ca intakes. Urinary excretion of /sup 75/Se and stable Se tended to decrease with increasing dietary Ca, but differences were not significant. No significant differences were found in concentration of /sup 75/Se in several tissues. Kidney and liver had the highest concentration with that in kidney being about four times that of liver. Apparent /sup 75/Se absorption was decreased 10 to 6%, respectively, in calves fed extremely low and high amounts of Ca, compared with those receiving the requirement (.67% Ca). These small reductions along with a small R/sup 2/ suggest that dietary Ca probably is of little practical importance relative to Se metabolism in calves.

• Research Organization: Univ. of Georgia, Athens
• OSTI ID: 6020209
• Journal Information: J. Dairy Sci.; (United States), Journal Name: J. Dairy Sci.; (United States) Vol. 70:4; ISSN JDSCA
• Country of Publication: United States
• Language: English

Related Subjects

553005* -- Agriculture & Food Technology-- Animal Husbandry-- (1987-)
60 APPLIED LIFE SCIENCES
ADSORPTION
ALKALINE EARTH METALS
ANIMAL FEEDS
ANIMALS
BETA DECAY RADIOISOTOPES
BIOLOGICAL ACCUMULATION
BIOLOGICAL EFFECTS
BODY
CALCIUM
CATTLE
COWS
DAYS LIVING RADIOISOTOPES
DIET
DIGESTIVE SYSTEM
DOMESTIC ANIMALS
ELECTRON CAPTURE RADIOISOTOPES
ELEMENTS
EVEN-ODD NUCLEI
FOOD
GLANDS
INTERMEDIATE MASS NUCLEI
ISOTOPE APPLICATIONS
ISOTOPES
KIDNEYS
LIVER
MAMMALS
METABOLISM
METALS
NUCLEI
NUTRIENTS
ORGANS
RADIOISOTOPES
RUMINANTS
SELENIUM 75
SELENIUM ISOTOPES
SORPTION
TRACER TECHNIQUES
VERTEBRATES