Zinc deficiency in molybdenum poisoned cattle
Clinical signs ascribable to zinc deficiency were noted in a group of Friesian cows industrially poisoned with molybdenum. Zinc, copper, and molybdenum were determined in blood serum and black hair, and in the contaminated alfalfa pasture the group grazed on. Hematological parameters, and serum calcium and alkaline phosphatase activity, were also determined. Pooled samples of alfalfa from 2 uncontaminated pastures, and of blood, serum and black hair of clinically normal Friesian cattle grazing on these were used as controls. A mixed contamination of the polluted pasture with molybdenum and copper was found, both metals being inversely correlated with he distance to the polluting chimney. Zinc concentrations were normal and not significantly correlated with the distance to the chimney very high molybdenum was found in serum and hair of the poisoned animals; copper was normal in serum and hair. Low calcium and Alkaline phosphatase activity were found in serum, both variables being significantly correlated with serum zinc. Reduced red blood cell number, packed cell volumes and hemoglobin concentrations were also found, but no significant correlation of these parameters with any of the trace metals in serum or hair was found. Signs ascribed to zinc deficiency were consistent with the reduction of zinc in serum and hair and decreased alkaline phosphatase activity in serum. A zinc deficiency conditioned by a simultaneous increased intake of molybdenum and copper is proposed.
- OSTI ID:
- 5499148
- Journal Information:
- Vet. Hum. Toxicol.; (United States), Journal Name: Vet. Hum. Toxicol.; (United States) Vol. 23:1; ISSN VHTOD
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
560305* -- Chemicals Metabolism & Toxicology-- Vertebrates-- (-1987)
60 APPLIED LIFE SCIENCES
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
AIR POLLUTION
ALKALINE EARTH METALS
ANIMAL FEEDS
ANIMALS
BLOOD SERUM
BODY
CALCIUM
CARBOXYLIC ACIDS
CATTLE
CHEMICAL ANALYSIS
CONTAMINATION
COPPER
DIET
DOMESTIC ANIMALS
ELEMENTS
ENZYME ACTIVITY
FOOD
GLOBIN
HAIR
HEMATOLOGY
HEMOGLOBIN
HETEROCYCLIC ACIDS
HETEROCYCLIC COMPOUNDS
MAMMALS
MEDICINE
METALS
MOLYBDENUM
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANS
PIGMENTS
POLLUTION
PORPHYRINS
PROTEINS
QUANTITATIVE CHEMICAL ANALYSIS
QUANTITY RATIO
RUMINANTS
SKIN
TOXICITY
TRANSITION ELEMENTS
VERTEBRATES
ZINC