Effect of 3-nitrooxypropanol on enteric methane emissions of feedlot cattle fed with a tempered barley-based diet with canola oil

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dc.citation.volume101
dc.contributor.authorAlmeida AK
dc.contributor.authorCowley F
dc.contributor.authorMcMeniman JP
dc.contributor.authorKaragiannis A
dc.contributor.authorWalker N
dc.contributor.authorTamassia LFM
dc.contributor.authorMcGrath JJ
dc.contributor.authorHegarty RS
dc.coverage.spatialUnited States
dc.date.accessioned2024-09-29T22:25:56Z
dc.date.available2024-09-29T22:25:56Z
dc.date.issued2023-07-10
dc.description.abstractA dose-response experiment was designed to examine the effect of 3-nitrooxypropanol (3-NOP) on methane (CH4) emissions, rumen function and performance of feedlot cattle fed a tempered barley-based diet with canola oil. Twenty Angus steers of initial body weight (BW) of 356 ± 14.4 kg were allocated in a randomized complete block design. Initial BW was used as the blocking criterion. Cattle were housed in individual indoor pens for 112 d, including the first 21 d of adaptation followed by a 90-d finishing period when five different 3-NOP inclusion rates were compared: 0 mg/kg dry matter (DM; control), 50 mg/kg DM, 75 mg/kg DM, 100 mg/kg DM, and 125 mg/kg DM. Daily CH4 production was measured on day 7 (last day of starter diet), day 14 (last day of the first intermediate diet), and day 21 (last day of the second intermediate diet) of the adaptation period and on days 28, 49, 70, 91, and 112 of the finisher period using open circuit respiration chambers. Rumen digesta samples were collected from each steer on the day prior to chamber measurement postfeeding, and prefeeding on the day after the chamber measurement, for determination of rumen volatile fatty acids (VFA), ammonium-N, protozoa enumeration, pH, and reduction potential. Dry matter intake (DMI) was recorded daily and BW weekly. Data were analyzed in a mixed model including period, 3-NOP dose and their interaction as fixed effects, and block as a random effect. Our results demonstrated both a linear and quadratic (decreasing rate of change) effect on CH4 production (g/d) and CH4 yield (g/kg DMI) as 3-NOP dose increased (P < 0.01). The achieved mitigation for CH4 yield in our study ranged from approximately 65.5% up to 87.6% relative to control steers fed a finishing feedlot diet. Our results revealed that 3-NOP dose did not alter rumen fermentation parameters such as ammonium-N, VFA concentration nor VFA molar proportions. Although this experimental design was not focused on the effect of 3-NOP dose on feedlot performance, no negative effects of any 3-NOP dose were detected on animal production parameters. Ultimately, the knowledge on the CH4 suppression pattern of 3-NOP may facilitate sustainable pathways for the feedlot industry to lower its carbon footprint.
dc.description.confidentialfalse
dc.format.paginationskad237-
dc.identifier.author-urlhttps://www.ncbi.nlm.nih.gov/pubmed/37429613
dc.identifier.citationAlmeida AK, Cowley F, McMeniman JP, Karagiannis A, Walker N, Tamassia LFM, McGrath JJ, Hegarty RS. (2023). Effect of 3-nitrooxypropanol on enteric methane emissions of feedlot cattle fed with a tempered barley-based diet with canola oil.. J Anim Sci. 101. (pp. skad237-).
dc.identifier.doi10.1093/jas/skad237
dc.identifier.eissn1525-3163
dc.identifier.elements-typejournal-article
dc.identifier.issn0021-8812
dc.identifier.numberskad237
dc.identifier.pii7222391
dc.identifier.urihttps://mro.massey.ac.nz/handle/10179/71531
dc.languageeng
dc.publisherOxford University Press on behalf of the American Society of Animal Science
dc.publisher.urihttps://academic.oup.com/jas/article/doi/10.1093/jas/skad237/7222391
dc.relation.isPartOfJ Anim Sci
dc.rights(c) 2023 The Author/s
dc.rightsCC BY 4.0
dc.rightshttps://creativecommons.org/licenses/by/4.0/
dc.subject3-NOP
dc.subjectcarbon neutral
dc.subjectfeedlot
dc.subjectmethane
dc.subjectrumen fermentation
dc.subjectsustainability
dc.subjectCattle
dc.subjectAnimals
dc.subjectHordeum
dc.subjectRapeseed Oil
dc.subjectMethane
dc.subjectAnimal Feed
dc.subjectDiet
dc.subjectFermentation
dc.subjectRumen
dc.subjectAmmonium Compounds
dc.titleEffect of 3-nitrooxypropanol on enteric methane emissions of feedlot cattle fed with a tempered barley-based diet with canola oil
dc.typeJournal article
pubs.elements-id479063
pubs.organisational-groupOther
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