Capric and lauric acid mixture decreased rumen methane production, while combination with nitrate had no further benefit in methane reduction

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00027014%3A_____%2F23%3A10005829" target="_blank" >RIV/00027014:_____/23:10005829 - isvavai.cz</a>

Result on the web

<a href="https://sciendo.com/article/10.2478/aoas-2023-0010" target="_blank" >https://sciendo.com/article/10.2478/aoas-2023-0010</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.2478/aoas-2023-0010" target="_blank" >10.2478/aoas-2023-0010</a>

Result language

angličtina

Original language name

Capric and lauric acid mixture decreased rumen methane production, while combination with nitrate had no further benefit in methane reduction

Original language description

This study aimed to evaluate the methane-reducing potential of individual and combined treatments of low levels of nitrate (NIT) and a mixture of capric/lauric acid (CL) in dairy cows. Both in vitro and in vivo experiments were conducted. In the in vitro experiment, the anti-methanogenic effects of NIT (1.825 mmol/l) and CL (250 mg/l; capric acid, 125 mg/l + lauric acid, 125 mg/l) were evaluated in a 2 x 2 factorial design using consecutive batch incubations with rumen fluid. The NIT and CL reduced (P &lt; 0.05) methane production by 9.2% and by 21.3%, respectively. However, combining NIT with CL did not show (P &gt; 0.05) any benefit in methane reduction compared to the use of CL alone. In in vivo experiment, eight multiparous dry Holstein cows were fed two diets in a crossover design for two 21-day periods (14 days of adaptation and 7 days of sampling). The treatments were: 1) silage-based basal diet + 100 g stearic acid per cow/d (CON) and 2) silage-based basal diet + 50 g capric acid + 50 g lauric acid per cow/d (CL). Gas emissions were measured using open-circuit respiration chambers. Methane production (g/d) was reduced (by 11.5%; P = 0.012) when the diet was supplemented with CL. However, supplementation with CL increased ruminal ammonia-N concentration (by 28.5%; P = 0.015) and gas ammonia production (g/d; by 37.2%; P = 0.005). Ruminal pH, protozoa count, and total and individual volatile fatty acid concentrations (VFA) did not differ (P &gt; 0.05) between the treatments. Treatment did not affect the intake and total tract apparent digestibility (P &gt; 0.05). In conclusion, our results suggest that low CL levels have anti-methanogenic potential. However, low levels of CL may compromise nitrogen use efficiency.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

40201 - Animal and dairy science; (Animal biotechnology to be 4.4)

Project

<a href="/en/project/QK1920037" target="_blank" >QK1920037: Determination of current emission factors for ammonia, methane and dinitrogen oxide from livestock production and the design of methods for their reduction</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2023

Confidentiality

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

Name of the periodical

Annals of Animal Science

ISSN

2300-8733

e-ISSN

—

Volume of the periodical

23

Issue of the periodical within the volume

3

Country of publishing house

DE - GERMANY

Number of pages

10

Pages from-to

799-808

UT code for WoS article

000940880800001

EID of the result in the Scopus database

2-s2.0-85149551549