Results 31 to 40 of about 20,371 (290)

Quantifying sources of methane using light alkanes in the Los Angeles basin, California [PDF]

open access: yes, 2013
Methane (CH4), carbon dioxide (CO2), carbon monoxide (CO), and C2-C5 alkanes were measured throughout the Los Angeles (L.A.) basin in May and June 2010. We use these data to show that the emission ratios of CH4/CO and CH4/CO2 in the L.A. basin are larger
Aikin, KC   +23 more
core   +2 more sources

Effects of supplementation frequency on the ruminal fermentation and enteric methane production of beef cattle grazing in tropical pastures

open access: yesRevista Brasileira de Zootecnia, 2014
The objective of this study was to evaluate the characteristics of ruminal fermentation and enteric methane production in beef cattle subjected to different supplementation frequencies while grazing on Brachiaria brizanthacv. Marandu pastures.
Roberta Carrilho Canesin   +7 more
doaj   +1 more source

A comparison of the economic value for enteric methane emissions with other biological traits associated with dairy cows [PDF]

open access: yes
This is the first study to derive the economic value of enteric methane produced by a ruminant animal. There is considerable interest globally in selecting for low methane-emitting ruminant livestock, as methane is a potent greenhouse gas.
Bell, Matthew J.   +2 more
core   +1 more source

Effect of dried leaves of Leucaena leucocephala on rumen fermentation, rumen microbial population, and enteric methane production in crossbred heifers [PDF]

open access: yes, 2020
The effects of dietary inclusion of dried Leucaena leucocephala leaves (DLL) on nutrient digestibility, fermentation parameters, microbial rumen population, and production of enteric methane (CH4) in crossbred heifers were evaluated.
Aguilar-Pérez, Carlos Fernando   +6 more
core   +1 more source

Methods for Measuring and Estimating Methane Emission from Ruminants

open access: yesAnimals, 2012
This paper is a brief introduction to the different methods used to quantify the enteric methane emission from ruminants. A thorough knowledge of the advantages and disadvantages of these methods is very important in order to plan experiments, understand
Jørgen Madsen   +3 more
doaj   +1 more source

Mitigation of Rumen Methane Emissions with Foliage and Pods of Tropical Trees

open access: yesAnimals, 2020
Methane produced by enteric fermentation contributes to the emission of greenhouse gases (GHG) into the atmosphere. Methane is one of the GHG resulting from anthropogenic activities with the greater global warming contribution.
Jorge Canul-Solis   +7 more
doaj   +1 more source

Methane emissions from dairy heifers as affected by residual feed intake and breed : a thesis presented in partial fulfilment of the requirements for the degree of Master of Science in Animal Science at Massey University, Manawatū, New Zealand [PDF]

open access: yes, 2018
Figures 2.5, 2.6, 2.7, 2.8, 2.9, 3.1, 3.2 & 3.3 have been removed for copyright reasons, but may be accessed via their sources listed in the References.
Flay, Holly Ellissa
core   +1 more source

Predicting enteric methane production from cattle in the tropics

open access: yesAnimal, 2020
Accurate estimates of methane (CH4) production by cattle in different contexts are essential to developing mitigation strategies in different regions. We aimed to: (i) compile a database of CH4 emissions from Brazilian cattle studies, (ii) evaluate prediction precision and accuracy of extant proposed equations for cattle and (iii) develop specialized ...
R.S. Ribeiro   +14 more
openaire   +5 more sources

Meta-analysis of the relationship between dietary starch intake and enteric methane emissions in cattle from in vivo experiments

open access: yesJournal of Advanced Veterinary and Animal Research
Objective: Different sources and levels of starch in the total mixed ration might result in different rumen fermentation profiles, rumen microbial composition, and enteric methane production.
Agustin Herliatika   +13 more
doaj   +1 more source

Comparison of enteric methane yield and diversity of ruminal methanogens in cattle and buffaloes fed on the same diet

open access: yesPLoS ONE, 2021
An in vivo study was conducted to compare the enteric methane emissions and diversity of ruminal methanogens in cattle and buffaloes kept in the same environment and fed on the same diet. Six cattle and six buffaloes were fed on a similar diet comprising
P. K. Malik   +6 more
doaj   +2 more sources

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