Enteric Methane Emission Under Different Feeding Systems

Soren, N. M.; Sejian, Veerasamy; Malik, P. K.

doi:10.1007/978-81-322-2265-1_12

Cited by 8 publications

(4 citation statements)

References 69 publications

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“…The profile of SCFAs produced by caecal and colon microbiota depends largely on the composition of food. Diets with high proportion of concentrates, rich in readily fermented non-structural carbohydrates, allow for faster fermentation with the elevated production of propionate, which decreases the acetate : propionate ratios in the digestive tract (Soren et al 2015).…”

Section: Resultsmentioning

confidence: 99%

In vitro fermentation pattern in the large intestine of hybrids between wild boars and domestic pigs - a preliminary study

Miśta¹,

Króliczewska²,

Pecka-Kiełb³

et al. 2016

CZECH J ANIM SCI

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Breeding of hybrids between wild boars and domestic pigs is in the consumer interest because of the need to ensure food security and diversification via widening the genetic basis of animals reared for meat. To expand the knowledge about their nutritional requirements, this study aimed to investigate hindgut fermentation in these animals. Caecal and colon cultures were incubated for 12 h in vitro with or without wheat bran as a supplementary substrate. Short-chain fatty acids, ammonia, methane, and total gas production were determined. The total concentrations of short-chain fatty acids in unincubated caecal and colon samples were 93.1 and 115 mmol/kg, respectively. The short-chain fatty acid profile in fresh hindgut contents was characterized by a high molar proportion of acetate (74.8-75.0 mol%), followed by propionate (18.2-18.5 mol%) and butyrate (5.4-5.5 mol%). The presence of wheat bran lowered acetate and increased butyrate, propionate, and valerate molar proportions. The ammonia level remained low (1.3-2.43 mmol/kg) regardless of the addition of the substrate. The relatively low pH and ammonia concentration in wild boar/pig hybrids may be caused by the low level of crude protein in diet of these animals. The rate of methanogenesis increased during the fermentation simultaneously with an increase in the production of gases after wheat bran addition. Methane production in the caecal and colon samples incubated with the substrate reached 15.6 and 16.1 mmol/kg, respectively. The hindgut fermentation pattern in wild boar/pig hybrids generally resembled that described earlier in domestic pigs, although some observed dissimilarities may be caused by distinct microbial activity.

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Section: Resultsmentioning

confidence: 99%

In vitro fermentation pattern in the large intestine of hybrids between wild boars and domestic pigs - a preliminary study

Miśta¹,

Króliczewska²,

Pecka-Kiełb³

et al. 2016

CZECH J ANIM SCI

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“…However, when disturbed by external conditions, the source and sink of CH 4 in the alpine peatland ecosystem can be significantly altered (Webster et al, 2013). As one of the main greenhouse gases, the warming potential of CH 4 is 23 times than that of CO 2 , and changes in the CH 4 content in the atmosphere can have a significant impact on the trend and intensity of global climate change (Reichstein et al, 2013;Soren, Sejian & Malik, 2015). However, the dynamics of CH 4 in alpine peatland ecosystems and its response to extreme drought are poorly understood and lack quantified analyses.…”

Section: Introductionmentioning

confidence: 99%

Drought-induced reduction in methane fluxes and its hydrothermal sensitivity in alpine peatland

Yan

et al. 2020

PeerJ

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Accurate estimation of CH4 fluxes in alpine peatland of the Qinghai-Tibetan Plateau under extreme drought is vital for understanding the global carbon cycle and predicting future climate change. However, studies on the impacts of extreme drought on peatland CH4 fluxes are limited. To study the effects of extreme drought on CH4 fluxes of the Zoige alpine peatland ecosystem, the CH4 fluxes during both extreme drought treatment (D) and control treatment (CK) were monitored using a static enclosed chamber in a control platform of extreme drought. The results showed that extreme drought significantly decreased CH4 fluxes in the Zoige alpine peatland by 31.54% (P < 0.05). Extreme drought significantly reduced the soil water content (SWC) (P < 0.05), but had no significant effect on soil temperature (Ts). Under extreme drought and control treatments, there was a significant negative correlation between CH4 fluxes and environmental factors (Ts and SWC), except Ts, at a depth of 5cm (P < 0.05). Extreme drought reduced the correlation between CH4 fluxes and environmental factors and significantly weakened the sensitivity of CH4 fluxes to SWC (P < 0.01). Moreover, it was found that the correlation between subsoil (20 cm) environmental factors and CH4 fluxes was higher than with the topsoil (5, 10 cm) environmental factors under the control and extreme drought treatments. These results provide a better understanding of the extreme drought effects on CH4 fluxes of alpine peatland, and their hydrothermal impact factors, which provides a reliable reference for peatland protection and management.

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“…However, when disturbed by external conditions, the source and sink of CH 4 in the alpine peatland ecosystem can be significantly altered [16]. As one of the main greenhouse gases, the warming potential of CH 4 is 23 times than that of CO 2 , and changes in the CH 4 content in the atmosphere can have a significant impact on the trend and intensity of global climate change [17][18]. However, the dynamics of CH 4 in alpine peatland ecosystems and its response to extreme drought are poorly understood and lack quantified analyses.…”

Section: Introductionmentioning

confidence: 99%

Peer Review #2 of "Drought-induced reduction in methane fluxes and its hydrothermal sensitivity in alpine peatland (v0.1)"

2020

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Accurate estimation of CH 4 fluxes in alpine peatland of the Qinghai-Tibetan Plateau under extreme drought is vital for understanding the global carbon cycle and predicting future climate change. However, studies on the impacts of extreme drought on peatland CH 4 fluxes are limited. To study the effects of extreme drought on CH 4 fluxes of the Zoige alpine peatland ecosystem, the CH 4 fluxes during both extreme drought treatment (D) and control treatment (CK) were monitored using a static enclosed chamber in a control platform of extreme drought. The results showed that extreme drought significantly decreased CH 4 fluxes in the Zoige alpine peatland by 31.54% (P<0.05). Extreme drought significantly reduced the soil water content (SWC) (P<0.05), but had no significant effect on soil temperature (Ts). Under extreme drought and control treatments, there was a significant negative correlation between CH 4 fluxes and environmental factors (Ts and SWC), except Ts, at a depth of 5cm (P<0.05). Extreme drought reduced the correlation between CH 4 fluxes and environmental factors and significantly weakened the sensitivity of CH 4 fluxes to SWC (P<0.01). Moreover, it was found that the correlation between subsoil (20 cm) environmental factors and CH 4 fluxes was higher than with the topsoil (5, 10 cm) environmental factors under the control and extreme drought treatments. These results provide a better understanding of the extreme drought effects on CH 4 fluxes of alpine peatland, and their hydrothermal impact factors, which provides a reliable reference for peatland protection and management.

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Enteric Methane Emission Under Different Feeding Systems

Cited by 8 publications

References 69 publications

In vitro fermentation pattern in the large intestine of hybrids between wild boars and domestic pigs - a preliminary study

In vitro fermentation pattern in the large intestine of hybrids between wild boars and domestic pigs - a preliminary study

Drought-induced reduction in methane fluxes and its hydrothermal sensitivity in alpine peatland

Peer Review #2 of "Drought-induced reduction in methane fluxes and its hydrothermal sensitivity in alpine peatland (v0.1)"

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