Effect of pasture management on enteric methane emissions from goats

The effect of pasture management on CH 4 emissions was investigated from goats in a tropical climate. Two experiments were conducted in a “Tanzania Guinea grass” ( Panicum maximum Jacq.) pasture to assess enteric CH 4 production in a completely randomized design. Emissions from light, moderate, and...

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Bibliographic Details
Published in:Tropical animal health and production 2021-12, Vol.53 (1), p.94-94, Article 94
Main Authors: Meister, Naomi Cristina, Cardoso, Abmael da Silva, Alari, Fernando Oliveira, Lemos, Nailson Lima Santos, Frighetto, Rosa Toyoko Shiraishi, Malheiros, Euclides Braga, Reis, Ricardo Andrade, Ruggieri, Ana Cláudia
Format: Article
Language:English
Subjects:
Animal Husbandry - methods
Animals
Biomedical and Life Sciences
Brazil
Diet - veterinary
Dry matter
Emissions
Experiments
Female
Forage
Goats
Goats - metabolism
Grasses
Grassland
Grazing
Herbivores
Leaf area
Leaf area index
Life Sciences
Luminous intensity
Methane
Methane - metabolism
Pasture
Pasture management
Regular Articles
Tracer gas
Veterinary Medicine/Veterinary Science
Zoology
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Summary:The effect of pasture management on CH 4 emissions was investigated from goats in a tropical climate. Two experiments were conducted in a “Tanzania Guinea grass” ( Panicum maximum Jacq.) pasture to assess enteric CH 4 production in a completely randomized design. Emissions from light, moderate, and heavy grazing intensities were analyzed in the first experiment, and variations between grazing days were explored in the second experiment. Grazing intensity was defined as 2.4, 1.6, and 0.8 post-grazing leaf area index. Pasture management employed intermittent grazing with variable stocking rate using Anglo Nubian female adult goats. SF 6 tracer gas technique was used to measure CH 4 production. Grazing intensity was not found to affect CH 4 emissions per animal, dry matter forage intake (DMI), and gross energy (GE) intake. However, the second experiment showed that CH 4 production was influenced by the grazing day. CH 4 emissions were 18.1 g day −1 , and the variables were 0.88 g kg −1 of metabolic weight, 17.45 g kg −1 of DMI, and 5.5% of GE. CH 4 production increased linearly with the grazing day, possibly reflecting a reduction in forage quality. These findings suggest that the day of occupation in intermittent grazing has a greater effect on CH 4 emissions than that by grazing intensity and that a single day grazing of Tanzania Guinea grass could mitigate CH 4 emissions.
ISSN:0049-4747
1573-7438
DOI:10.1007/s11250-020-02507-z