Abstract
A possible outcome of policies designed to reduce obesity in the human population and to mitigate
greenhouse gas (GHG) emissions may be a decrease in human consumption of livestock products.
However, livestock products currently make substantial contributions to intakes of specific micronutrients.
Therefore, the present review examines the potential for increasing micro-nutrient
concentrations of milk, muscle meats and eggs by nutritional and genetic means. Of the trace
elements, copper (Cu), iron (Fe) and zinc (Zn) concentrations were largely resistant to manipulation by
dietary means, but iodine (I) and selenium (Se) could be readily manipulated. Similarly, while
α-tocopherol concentrations were readily manipulated, responses to dietary supplementation with
retinol, folate and cobalamin were lower and riboflavin was resistant to dietary manipulation. There
were differences between products in the ease with which composition could be manipulated: egg
concentrations were most responsive followed by milk and muscle meats. However, livestock products
with increased micro-nutrients concentrations can supply a substantial proportion of the daily
reference nutrient intake.
Original language | English |
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Pages (from-to) | 603 - 614 |
Number of pages | 12 |
Journal | Journal of Agricultural Science |
Volume | 148 |
Issue number | 5 |
Early online date | 2010 |
DOIs | |
Publication status | Print publication - Oct 2010 |