Effect of polyurethane coated urea on ruminal
ammonia release and fermentation characteristics
 in vitro  of steam-flaked maize-based diet

Feed-grade urea (FGU), soyabean meal (SBM) and polyurethane coated urea (PCU) were used to investigate the effect of different nitrogen sources on ruminal ammonia release and other fermentation characteristics in vitro. The results showed NH₃-N concentrations of PCU and SBM diets were similar during first 8 h of fermentation and were significantly lower by 8.2-20.6% than that of FGU diet (P<0.01). In vitro ruminal pH, 24-h gas production, total VFA and individual VFA molar proportions were not affected by nitrogen sources, except for 24-h ruminal dry matter digestibility in vitro that was higher (P<0.05) for SBM diet than FGU and PCU diets. It was concluded that PCU supplement could slower ruminal ammonia release, which was similar with SBM and better than FGU.

Submit your paper

Instructions for Authors

Archive

Send by email

Evaluation of feed supplementation using legume leaf meal and spent substrate fermented by Eupenicillium javanicum as a potential feed for ruminants: an in vitro study

Effects of level and type of essential oils on rumen methanogenesis and fermentation: A meta-analysis of in vitro experiments

Determination of quality and nutrient content of artichoke by-products ensilaged with barley and molasses

Effect of freshwater microalgae Nannochloropsis limnetica on the rumen fermentation in vitro

Effect of β-carotene on selected indices of in vitro rumen fermentation in goats

Indexes

Keywords index

Topics index

Authors index

ISSN:

1230-1388

Assigning DOI numbers, introducing articles from supplements and recent publications to POL-index database, maintaining anti-plagiarism detection, electronic system to proceed manuscripts and webpage of the Journal with interactive pdf files, and language correction of manuscripts published in Journal of Animal and Feed Sciences are financed in the years 2018–2019 by the Ministry of Science and Higher Education from the funds for science popularization activities, Agreement No. 631/P-DUN/2018.