New Zealand Journal of Agricultural Research abstracts
Effect of soil ingestion on the storage of Se, vitamin B12, Cu, Cd, Fe, Mn, and
Zn in the liver of sheep fed lucerne pellets
N. D. GRACE
J. R. ROUNCE
J. LEE
AgResearch Grasslands
Private Bag 11008
Palmerston North, New Zealand
Abstract The effect of ingesting 100 g/day of two
yellow-brown/yellow-grey earth soils on the storage of selenium (Se), vitamin
B12, copper (Cu), cadmium (Cd), iron (Fe), manganese (Mn), and zinc (Zn) in
the liver of sheep was studied in 32 wether lambs fed lucerne pellets. Both
soils significantly increased plasma and liver concentrations of Se. Soil B
which had the highest cobalt (Co) concentration (1.8 versus 1.32 ug/g DM)
significantly increased the liver vitamin B12 concentration. The soils did not
affect the concentrations of Cu, Mn, Fe, and Zn in the liver. An increase in
liver Cd concentrations occurred during the study but this was not related to
the soil treatments. Soil ingestion increased in the 30 000 xg
supernatant fractions Fe concentrations in all digesta, Mn and Se
concentrations in the abomasal digesta, Se and Zn concentrations in the
reticulorumen, and decreased Cu concentrations in the abomasal digesta.
Depending on the amounts ingested, the yellow-brown/yellow-grey earth soils
could be a source of Se and Co to grazing sheep.
Keywords sheep; soil ingestion; liver trace elements; vitamin
B12; digesta
New Zealand Journal of Agricultural Research, 1996, Vol. 39: 325-331
0028-8233/96/3903-0325 $2.50/0 (c) The Royal Society of New Zealand
1996
PDF file of entire paper: medium quality (521K); (scanned from paper original: notes about this process)
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