Heritability estimates of methane emissions from sheep
Open accessAbstract
The objective of this study was to determine the genetic parameters of methane (CH4) emissions and their genetic correlations with key production traits. The trial measured the CH4 emissions, at 5-min intervals, from 1225 sheep placed in respiration chambers for 2 days, with repeat measurements 2 weeks later for another 2 days. They were fed in the chambers, based on live weight, a pelleted lucerne ration at 2.0 times estimated maintenance requirements. Methane outputs were calculated for g CH4/day and g CH4/kg dry matter intake (DMI) for each of the 4 days. Single trait models were used to obtain estimates of heritability and repeatability. Heritability of g CH4/day was 0.29 ± 0.05, and for g CH4/kg DMI 0.13 ± 0.03. Repeatability between measurements 14 days apart were 0.55 ± 0.02 and 0.26 ± 0.02, for the two traits. The genetic and phenotypic correlations of CH4 outputs with various production traits (weaning weight, live weight at 8 months of age, dag score, muscle depth and fleece weight at 12 months of age) measured in the first year of life, were estimated using bivariate models. With the exception of fleece weight, correlations were weak and not significantly different from zero for the g CH4/kg DMI trait. For fleece weight the phenotypic and genetic correlation estimates were -0.08 ± 0.03 and -0.32 ± 0.11 suggesting a low economically favourable relationship. These results indicate that there is genetic variation between animals for CH4 emission traits even after adjustment for feed intake and that these traits are repeatable. Current work includes the establishment of selection lines from these animals to investigate the physiological, microbial and anatomical changes, coupled with investigations into shorter and alternative CH4 emission measurement and breeding value estimation techniques; including genomic selection.
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Methane production is regulated by host genetics in sheep.
“Pinares-Patiño et al. (2011) and Pinares-Patiño et al. (2013) demonstrated that methane production is also regulated by host genetics in sheep and that selection of low methane emitting animals by genotyping is possible.”
From Addressing global ruminant agricultural challenges through understanding the rumen microbiome: past, present, and future (2018) · cites this paper as Pinares-Patiño et al., 2013
Genetic influence of the host on rumen passage rate is likely to be one host factor that influences the rumen microbiome.
“Therefore, genetic influence of the host on rumen passage rate is likely to be one host factor that influences the rumen microbiome, but other factors should also be considered (Pinares-Patiño et al., 2013).”
From Addressing global ruminant agricultural challenges through understanding the rumen microbiome: past, present, and future (2018) · cites this paper as Pinares-Patiño et al., 2013
Selection of low methane emitting animals by genotyping is possible.
“Pinares-Patiño et al. (2011) and Pinares-Patiño et al. (2013) demonstrated that methane production is also regulated by host genetics in sheep and that selection of low methane emitting animals by genotyping is possible.”
From Addressing global ruminant agricultural challenges through understanding the rumen microbiome: past, present, and future (2018) · cites this paper as Pinares-Patiño et al., 2013
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- Authors
- Pinares-Patiño, C. S., Hickey, S. M., Young, E. A., Dodds, K. G., MacLean, S., Molano, G., Sandoval, E., Kjestrup, H., Harland, R., Hunt, C., Pickering, N. K., & McEwan, J. C.
- Affiliations
- AgResearch (NZ)
- Corresponding author
- McEwan, J.C.
- Venue
- animal
- Publisher
- Elsevier BV
- Published
- 2013
- Volume
- 7
- Pages
- 316-321
- ISSN
- 1751-7311 (ISSN-L)
- PMC
- PMC3691003
- OpenAlex
- W2167908327
- Cited by
- 228
- References
- 17
- Citations by year
- 2026: 15 · 2025: 12 · 2024: 5 · 2023: 17 · 2022: 30 · 2021: 14 · 2020: 16 · 2019: 18 · 2018: 23 · 2017: 24 · 2016: 23 · 2015: 16 · 2014: 13 · 2013: 2
- FWCI
- 11.82
- Type
- journal article
- Language
- en
- Open access
- hybrid
- doi.org
- Licence
- Locations
- animal (publishedVersion, cc-by-nc-nd)
- Europe PMC (PubMed Central) (publishedVersion, other-oa)
- PubMed Central (publishedVersion, cc-by-nc-sa)
- PubMed (publishedVersion)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- Funders
- AgResearch
- New Zealand Government
- New Zealand Agricultural Greenhouse Gas Research Centre
- Topics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic and phenotypic traits in livestock
- Life Sciences › Agricultural and Biological Sciences › Agronomy and Crop Science › Ruminant Nutrition and Digestive Physiology
- Life Sciences › Agricultural and Biological Sciences › Agronomy and Crop Science › Reproductive Physiology in Livestock
- Keywords
- methane emissions, sheep, heritability, repeatability, genetic correlation, fleece weight, weaning weight, live weight, muscle depth, respiration chambers, genetic variation, selection lines, genomic selection, breeding value estimation
- MeSH terms
- Air Pollutants, Animals, Animal Feed, Animal Husbandry, Eating, Female, Male, Methane, New Zealand, Respiration, Genetic Variation, Quantitative Trait, Heritable, Sheep, Domestic
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