As seen in Table 6, nitrogen retention of
goats fed wilted silage was lower than that of
goats fed hay or low-moisture silage. Each
year goats fed wilted silage were in negative
nitrogen balance and had greater nitrogen losses
in their urine. McDonald et al. (24) also re-
ported negative nitrogen balance values for
sheep fed high-moisture silage. Waldo et al.
(36) found lower nitrogen retention values for
silage-fed heifers than for hay-fed heifers.
Differences in nitrogen retention and urinary
nitrogen losses between wilted silage and low-
moisture silage are probably due to differences
in ammoniacal nitrogen and soluble carbohy-
drate contents of these silages. Data in Table
2 demonstrated that wilted silage contains