Effects of fluorine on dairy cattle. III. Digestion and metabolism trials

Journal Article · Wed Jan 01 04:00:00 EST 1964 · J. Anim. Sci.; (United States)

OSTI ID:5650573

Harris, L E; Raleigh, R J; Stoddard, G E; Greenwood, D A; Shupe, J L; Nielsen, H M

Thirty-two female Holstein cattle were assigned to 16 treatments in a factorially designed experiment. The four levels of fluorine used were 10, 28, 55, and 109 ppm on a moisture-free hay basis; computed according to dry matter intakes, the fluorine levels were 12, 27, 49, and 93 ppm. Two quantities, 1.0 or 3.0% of a Ca-P mineral mixture were incorporated in a pelleted grain concentrate. Five digestion and metabolism trials were conducted, two before and three after the animals began to lactate. Fluorine consumption had no significant effects upon feed intakes, digestion coefficients, or absorption of nutrients during the first two trials before the cattle began to lactate. During trials three, four, and five, however, the animals ingesting 109 ppm F consumed less feed than the animals on the lower levels. The effects of fluorine on the digestion and absorption of nutrients are secondary, since it required nearly 2 1/2 years for the higher levels to influence these physiological functions. The tolerance level of fluorine as sodium fluoride is between 28 and 55 ppm on a dry hay basis or between 27 and 49 ppm on a total dry feed basis. 4 references, 4 tables.

• Research Organization: Utah Agricultural Experiment Station, Logan
• OSTI ID: 5650573
• Journal Information: J. Anim. Sci.; (United States), Journal Name: J. Anim. Sci.; (United States) Vol. 23; ISSN JANSA
• Country of Publication: United States
• Language: English

Related Subjects

560305* -- Chemicals Metabolism & Toxicology-- Vertebrates-- (-1987)
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ABSORPTION
ALKALI METAL COMPOUNDS
ANIMALS
BIOLOGICAL EFFECTS
CATTLE
CHRONIC EXPOSURE
COMPARATIVE EVALUATIONS
COWS
DIGESTION
DOMESTIC ANIMALS
DOSE-RESPONSE RELATIONSHIPS
FLUORIDES
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
INGESTION
INTAKE
MAMMALS
METABOLISM
NUTRIENTS
RUMINANTS
SODIUM COMPOUNDS
SODIUM FLUORIDES
TOLERANCE
VERTEBRATES