Showing papers by "Gabriella A. Varga published in 1998"

TL;DR: Based on changes in ruminal concentrations of ammonia, synchronous ruminal release of supplemental carbohydrate with pasture N appeared to improve the capture of ruminal N; however, these changes were transient and did not change the N status or performance of dairy cows.

TL;DR: Nitrogen intake, apparent and true digestibilities, fecal and urinary concentration of and N balance increased as the concentration of dietary protein increased, and the efficiency of absorbed protein utilization decreased as protein intake increased.

TL;DR: Little information exists about the fiber requirements of the cow from immediately postcalving until peak lactation, and rations based on nonforage fiber sources (> 45% neutral detergent fiber on a dry matter basis) are being evaluated for early lactation cows.

TL;DR: Four continuous culture fermenters were used in a randomized block design to evaluate the effects of grain feeding frequency and rumen undegradable protein (RUP) on nutrient utilization and microbial protein synthesis with high quality grass.