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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

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

Projekt

<a href="/cs/project/QK1920037" target="_blank" >QK1920037: Stanovení aktuálních emisních faktorů amoniaku, metanu a oxidu dusného z živočišné výroby a návrh metod pro jejich snížení</a><br>

Návaznosti

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

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název periodika

Annals of Animal Science

ISSN

2300-8733

e-ISSN

—

Svazek periodika

23

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

10

Strana od-do

799-808

Kód UT WoS článku

000940880800001

EID výsledku v databázi Scopus

2-s2.0-85149551549