BACKGROUND Despite growing consumer demand for organically produced foods, information based on a systematic review of their nutritional quality is lacking. OBJECTIVE We sought to quantitatively assess the differences in reported nutrient content between organically and conventionally produced foodstuffs. DESIGN We systematically searched PubMed, Web of Science, and CAB Abstracts for a peri...

Organisms limited by carbon, nitrogen or sulphur can reduce protein production costs by transitions to less costly amino acids, or by reducing protein expression. These alternative mechanisms of nutrient thrift might respond differently to selection, but this possibility remains untested. We hypothesized that relatively invariant sequence composition responds to long-term variation in nutrient ...

The concentration of gross energy in distillers dried grain with solubles (DDGS) is greater than in corn. However, because of a lower digestibility of energy in DDGS than in corn, there is no difference in the concentration of digestible and metabolizable energy between DDGS and corn. The apparent and standardized ileal digestibility of amino acids in DDGS does vary among sources but, with the ...

Objectives: To survey existing literature comparing nutrient content of organic and conventional crops using statistical methods to identify significant differences and trends in the data. Design: Published comparative measurements of organic and conventional nutrient content were entered into a database for calculation. For each organic-to-conventional comparison, a percent difference was calc...

OBJECTIVES To survey existing literature comparing nutrient content of organic and conventional crops using statistical methods to identify significant differences and trends in the data. DESIGN Published comparative measurements of organic and conventional nutrient content were entered into a database for calculation. For each organic-to-conventional comparison, a percent difference was calc...