Organic carbon amendments in livestock feeds reduce rumen methane emissions and improve manure quality and soil carbon stability

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26296080%3A_____%2F25%3AN0000074" target="_blank" >RIV/26296080:_____/25:N0000074 - isvavai.cz</a>

Result on the web

<a href="https://ans2025.ucm.sk/" target="_blank" >https://ans2025.ucm.sk/</a>

DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Organic carbon amendments in livestock feeds reduce rumen methane emissions and improve manure quality and soil carbon stability

Original language description

The cattle feed amended with stabilized organic carbon materials provides health and nutritional benefits to livestock. It enhances nutrient utilization by reduced carbon (and nitrogen) volatilization from rumen. While rumen methane emissions decreased, nutrient retention in dung increased. This may form manure with enhanced fertilization value and soil conditioning potential. A stable experiment was done, involving cows (groups of eight animals) fed for 30 day with either biochar, humic leonardite derivate (commercial product Humac), or with both amendments. Animal daily methane production was reduced by feeding mix biochar + Humac compared to the control group without feed supplement. The manures from various feed treatments did not differ significantly in total carbon content; all amendments’ diets increased manure pH compared to the control. Both biochar or Humac supplementation increased manure potassium content. The impact of manure on soil was evaluated in 12-week pot experiment with maize (Zea mays). The manure from Humac-fed group increased D-glucose- and other substrate-induced respirations in amended soil. The manure from biochar-fed group reduced respiration potential, indicating a tendency to stabilize soil organic carbon. The tested feed supplementations reduced greenhouse gas emissions in cattle production, increased manure quality and long-term soil organic carbon stabilization.

Czech name

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Czech description

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Type

O - Miscellaneous

CEP classification

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OECD FORD branch

40101 - Agriculture

Project

<a href="/en/project/SQ01010201" target="_blank" >SQ01010201: Valorization of carbonaceous materials for reducing greenhouse gas emissions in livestock production and supporting primary production and carbon sequestration in soil</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2025

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů