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Feeding Strategies to Mitigate Enteric Methane Emission from Ruminants in Grassland Systems

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Title Feeding Strategies to Mitigate Enteric Methane Emission from Ruminants in Grassland Systems
 
Creator Vargas, Juan
Ungerfeld, Emilio
Muñoz, Camila
DiLorenzo, Nicolas
 
Subject grazing
methane emission
greenhouse gas emissions
enteric methane
herbage crops
tanning extracts
nitrogen fertilizers
legumes
ruminants
mammals
grassland management
grazing intensity
grassland soils
silvopastoral systems
environmental impact
 
Description Ruminants produce approximately 30% of total anthropogenic methane emissions globally. The objective of this manuscript was to review nutritional enteric methane abatement practices for ruminants that are applicable under grazing conditions. A total of 1548 peer-reviewed research articles related to the abatement of enteric methane emissions were retrieved and classified into four categories: non-experimental, in vitro, in vivo confined, and in vivo grazing. The methane abatement strategies for grazing systems were arranged into grazing management and supplementation practices. Only 9% of the retrieved papers have been conducted under grazing conditions. Eight grazing management practices have been evaluated to reduce methane emissions. Decreasing the pre-grazing herbage mass reduced the methane emission per unit of product. Other grazing management practices such as increased stocking rate, decreased forage maturity, rotational stocking, and incorporating tannin-containing or non-tannin-containing feeds showed contradictory results. Nitrogen fertilization or silvopastoral systems did not modify methane emissions. Conversely, supplementation practices in grazing conditions showed contradictory responses on methane emissions. Lipid supplementation showed promising results and suggests applicability under grazing conditions. Identifying and implementing grazing strategies and supplementation practices under grazing conditions is required to increase efficiency and reduce the environmental impact of these systems.
 
Date 2022-04-28
2022-12-22T12:20:30Z
2022-12-22T12:20:30Z
 
Type Journal Article
 
Identifier Vargas, Juan; Ungerfeld, Emilio; Muñoz, Camila; and DiLorenzo, Nicolas. 2022. Feeding Strategies to Mitigate Enteric Methane Emission from Ruminants in Grassland Systems. Animals 12(9): 1132. https://doi.org/10.3390/ani12091132
2076-2615
https://hdl.handle.net/10568/126244
https://doi.org/10.3390/ani12091132
 
Language en
 
Rights CC-BY-4.0
Open Access
 
Format 1132
 
Source Animals