Phosphorus concentrations were determined by NaOH–EDTA extraction and solution 31P NMR. Results are given as g P kg dry wt−1.
∗ Values are means ± standard deviation of three pens per feeding treatment, and values in parenthesis are the proportion (%) of the total manure P determined by microwave digestion.
† Values in parenthesis are the proportion (%) of the NaOH–EDTA extracted P.
‡ Values for phosphate monoesters include all monoesters other than phytate.
ND, not detected.
a–c Means in the same column followed by the same letter do not differ (P > 0.05).