Enteric Methane Emission in Sheep: Process Description and Factors Influencing Production

Soren, N. M.; Sejian, Veerasamy; Terhuja, Megolhubino; Dominic, George

doi:10.1007/978-981-10-4714-5_10

Cited by 5 publications

(5 citation statements)

References 84 publications

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“…In this test, the total VFA decreased as THI increased (Supplemental Table S3), which was consistent with the results of Nonaka et al (2008), and might be due to the reduction in feed intake. On the other hand, the elevated ratio of acetate to propionate, in accordance with Kljak et al (2017), indicated that the rumen fermentation pattern tended to acetate type, which would increase the proportion of methane (Owens and Basalan 2016;Soren et al 2017).…”

Section: Discussionmentioning

confidence: 96%

Temperature and humidity index (THI)-induced rumen bacterial community changes in goats

Zhong

Ding

Wang

et al. 2019

Appl Microbiol Biotechnol

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The rumen microbiome is thought to play an important role in maintaining normal gastrointestinal metabolism and nutrient absorption in ruminants. The present study was designed to investigate the effect of heat stress on the rumen microbiome of goats using 16S rRNA sequencing technology. Six female goats were randomly allocated into two control metabolic chambers: A and B (in which the temperature and humidity could be precisely controlled with a precision deviation of ± 0.5°C and ± 5%, with three goats/chamber). Dynamic changes in the rumen bacterial community were detected under 16 gradually increasing temperature and humidity indexes (THIs). Heat stress had no significant effect on alpha diversity but affected the main phyla and genera of the goat rumen microbiota. With a deeper level of heat stress, the TH groups formed a distinct cluster that differed from that of the control check (CK) group. The dominant phylum transitioned from Firmicutes to Bacteroidetes, and co-exclusion occurred between these two phyla. With the increase in THI, the content of probiotics in the Lachnospiraceae_ND3007_group (P < 0.05) decreased, and the abundance of pathogenic bacteria, such as Erysipelotrichaceae_UCG-004 and Treponema_2, increased; however, the difference between the groups was not significant (P > 0.05). Phylogenetic investigation of communities by reconstruction of unobserved states (PICRUSt) was used to predict bacterial function, and we found that the ambient environment significantly affected the balance between carbohydrate and energy metabolism (P < 0.05). In conclusion, heat stress changed the composition of rumen microbes and affected metabolic function. This experiment provides a theoretical basis for exploring the effects of environmental factors on the rumen of goats.

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Section: Discussionmentioning

confidence: 96%

Temperature and humidity index (THI)-induced rumen bacterial community changes in goats

Zhong

Ding

Wang

et al. 2019

Appl Microbiol Biotechnol

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“…In these systems, grazing land is divided into different paddocks that are alternatively grazed and rested until the pasture restores its quality. A continuous supply of uniform quality feed throughout the year enables animals to increase their production and to decrease CH 4 production per kilogram of weight gain [20].…”

Section: Impact Of Heat Stress On Rumen Functionmentioning

confidence: 99%

Climate Change and Goat Production: Enteric Methane Emission and Its Mitigation

Pragna

Chauhan

Sejian

et al. 2018

Animals

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Simple SummaryGiven that goats are considered more climate resilient than other ruminant species, research efforts are therefore needed to understand goat productivity during exposure to high ambient temperatures. Heat stress can affect the digestion and rumen fermentation pattern of goats, which contributes to the reduction in production performance in goats. Diet composition, breed and environmental stresses are common factors which negatively influence rumen function and enteric methane (CH4) emission. There are three mechanisms by which enteric CH4 can be reduced: targeting end product of digestion to propionate, providing alternate hydrogen sink and selectively inactivating rumen methanogens. The various strategies that can be implemented to mitigate enteric CH4 include nutritional interventions, management strategies and application of advanced biotechnological tools.AbstractThe ability of an animal to cope and adapt itself to the changing climate virtually depends on the function of rumen and rumen inhabitants such as bacteria, protozoa, fungi, virus and archaea. Elevated ambient temperature during the summer months can have a significant influence on the basic physiology of the rumen, thereby affecting the nutritional status of the animals. Rumen volatile fatty acid (VFA) production decreases under conditions of extreme heat. Growing recent evidence suggests there are genetic variations among breeds of goats in the impact of heat stress on rumen fermentation pattern and VFA production. Most of the effects of heat stress on rumen fermentation and enteric methane (CH4) emission are attributed to differences in the rumen microbial population. Heat stress-induced rumen function impairment is mainly associated with an increase in Streptococcus genus bacteria and with a decrease in the bacteria of Fibrobactor genus. Apart from its major role in global warming and greenhouse effect, enteric CH4 is also considered as a dietary energy loss in goats. These effects warrant mitigating against CH4 production to ensure optimum economic return from goat farming as well as to reduce the impact on global warming as CH4 is one of the more potent greenhouse gases (GHG). The various strategies that can be implemented to mitigate enteric CH4 emission include nutritional interventions, different management strategies and applying advanced biotechnological tools to find solution to reduce CH4 production. Through these advanced technologies, it is possible to identify genetically superior animals with less CH4 production per unit feed intake. These efforts can help the farming community to sustain goat production in the changing climate scenario.

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“…The rumen associate factors are type and population of rumen microbes, and rumen protozoa concentration (Pragna et al, 2018). Although the previous study showed that goat have lower on enteric CH4 emission if compared with sheep and other ruminants (Soren et al, 2017).…”

Section: Ch4 Impact On Environmental and Climate Changementioning

confidence: 98%

Inventories of Methane Emission for Enteric and Decomposition Gasses from Cattle Manure and Its Mitigation Strategies

et al. 2023

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Livestock is a significant contributor to global methane (CH4) emissions, accounting for 18% to 51% of total emissions worldwide. The purpose of this study is to estimate the CH4 emissions from livestock in Jambi Province, using the Tier-1 method recommended by the Intergovernmental Panel on Climate Change (IPCC). The results show that CH4 emissions range from 7,464,728 to 7,833,349 tons per year, with feces management contributing 160,261 to 166,667 tons per year, and buffalo enteric emissions contributing 2,511,135 to 2,616,185 tons per year. These findings highlight the significant impact of the livestock sector in Jambi Province on global warming. Moreover, this study presents a brief overview of mitigation strategies that can be implemented to reduce CH4 emissions from the livestock sector.

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Enteric Methane Emission in Sheep: Process Description and Factors Influencing Production

Cited by 5 publications

References 84 publications

Temperature and humidity index (THI)-induced rumen bacterial community changes in goats

Temperature and humidity index (THI)-induced rumen bacterial community changes in goats

Climate Change and Goat Production: Enteric Methane Emission and Its Mitigation

Inventories of Methane Emission for Enteric and Decomposition Gasses from Cattle Manure and Its Mitigation Strategies

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