Zinc bioavailability in the chick

Thesis/Dissertation · Wed Dec 31 23:00:00 EST 1986

OSTI ID:7189027

Hempe, J M

Methods for assessing zinc bioavailability were evaluated in the chick. A low-zinc chick diet was developed using rehydrated, spray-dried egg white autoclaved at 121 C for 30 min as the primary protein source. The relative bioavailability of zinc from soy flour and beef was determined by whole-body retention of extrinsic /sup 65/Zn, and in slope ratio assays for growth rate and tissue zinc. Compared to zinc carbonate added to an egg white-based diet, all methods gave similar estimates of approximately 100% zinc bioavailability for beef but estimates for soy flour varied widely. The slope ratio assay for growth rate gave the best estimate of zinc bioavailability for soy flour. True absorption, as measured by percent isotope retention from extrinsically labeled soy flour, was 47%.

• Research Organization: Missouri Univ., Columbia (USA)
• OSTI ID: 7189027
• Country of Publication: United States
• Language: English

Related Subjects

550501 -- Metabolism-- Tracer Techniques
560300* -- Chemicals Metabolism & Toxicology
59 BASIC BIOLOGICAL SCIENCES
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ANIMAL GROWTH
ANIMALS
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
BIOLOGICAL AVAILABILITY
BIRDS
CHICKENS
DAYS LIVING RADIOISOTOPES
DIET
ELECTRON CAPTURE RADIOISOTOPES
ELEMENTS
EVEN-ODD NUCLEI
FOWL
GROWTH
INTERMEDIATE MASS NUCLEI
ISOTOPE APPLICATIONS
ISOTOPES
METABOLISM
METALS
NUCLEI
RADIOISOTOPES
RETENTION
TRACER TECHNIQUES
VERTEBRATES
ZINC
ZINC 65
ZINC ISOTOPES