@inproceedings{6c9fc2048cc548ae81b478b58990c528,
title = "Dry-matter intake, performance and nitrogen efficiency by dairy cows fed low crude-protein diets",
abstract = "The aim of this study, which was part of the EU-financed project Life-Ammonia, was to evaluate the effects of decreased dietary crude-protein concentrations on intake, milk production and nitrogen efficiency of dairy cows. Crude-protein concentration of the diet, containing mainly grass-clover silage and concentrate, was decreased from 170 g/kg DM in the reference year to 160 g/kg DM during the first two experimental years. Dietary crude-protein concentration was 170 g/kg DM during the third experimental year. Averaged across the three experimental years, daily DM intake and energy-corrected milk yield increased by 1.9 and 2.4 kg per cow, respectively, compared to the reference year. This resulted in only minor changes in nitrogen efficiency of lactating cows among years. Thus, a crude-protein concentration of 160-170 g/kg of dietary DM has the potential to increase milk yield and to control nitrogen losses from the manure",
keywords = "crude protein, feed intake, milk yield, nitrogen efficiency, urea, crude protein, feed intake, milk yield, nitrogen efficiency, urea",
author = "Elisabet Nadeau and Stig Karlsson and Gustafsson, \{Anders H.\}",
year = "2003",
language = "English",
isbn = "82-7479-016-2",
series = "Skjervold symposium series",
pages = "129--131",
booktitle = "Early harvested forage in milk and meat production",
publisher = "Agricultural University of Norway, Department of Animal and Aquacultural Sciences, {\AA}s, Norway",
}