Evaluation of different approaches for the estimation of daily yield from single milk testing scheme in cattle.

Three models for the estimation of milk, fat and protein daily yield (DY) based on a.m. (AM) or p.

Some environmental effects on relationships between in sacco degradability of protein and dry matter and chemical composition of Italian ryegrass.

The environmental effects on chemical composition and the rate and extent of crude protein (CP) and dry matter (DM) degradation of Italian ryegrass (Lolium multiflorum Lam.) in the rumen were studied. More intensive nitrogen (N) fertilizing (40, 80 and 140 kg N/ha) increased the content of the water, CP, true proteins and the effective degradability of CP (P < 0.