Zobrazeno 1 - 10
of 36
pro vyhledávání: '"J. I. Velazco"'
Beef cattle methane emissions measured with tracer-ratio and inverse dispersion modelling techniques
Autor:
M. Bai, J. I. Velazco, T. W. Coates, F. A. Phillips, T. K. Flesch, J. Hill, D. G. Mayer, N. W. Tomkins, R. S. Hegarty, D. Chen
Publikováno v:
Atmospheric Measurement Techniques, Vol 14, Pp 3469-3479 (2021)
The development and validation of management practices to mitigate greenhouse gas (GHG) emissions from livestock require accurate emission measurements. This study assessed the accuracy of a practical inverse dispersion modelling (IDM) technique to q
Externí odkaz:
https://doaj.org/article/d81eedfda3c142679897b9fd8139dd43
Beef cattle methane emissions measured with tracer-ratio and inverse dispersion modelling techniques
Autor:
Trevor Coates, Julian Hill, Deli Chen, Nigel W. Tomkins, David G. Mayer, Roger Hegarty, Mei Bai, Frances Phillips, Thomas K. Flesch, J I Velazco
Publikováno v:
Atmospheric Measurement Techniques, Vol 14, Pp 3469-3479 (2021)
The development and validation of management practices to mitigate greenhouse gas (GHG) emissions from livestock require accurate emission measurements. This study assessed the accuracy of a practical inverse dispersion modelling (IDM) technique to q
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a1e1d92aae96f88595e1be63d81e3ab8
https://amt.copernicus.org/articles/14/3469/2021/amt-14-3469-2021.pdf
https://amt.copernicus.org/articles/14/3469/2021/amt-14-3469-2021.pdf
Autor:
Hutton Oddy, Brad C. Hine, R. M. Herd, P. F. Arthur, R. C. Dobos, Helen Smith, J I Velazco, Roger Hegarty
Publikováno v:
J Anim Sci
This experiment was to evaluate a suite of biological traits likely to be associated with genetic variation in residual feed intake (RFI) in Angus cattle. Twenty nine steers and 30 heifers bred to be divergent in postweaning RFI (RFI(p)) and that dif
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6a0d85ae9f47725e1a4ce1a5e787627b
https://doi.org/10.1093/jas/skz077
https://doi.org/10.1093/jas/skz077
Publikováno v:
Animal Production Science. 61:381
Context Research into improving feed efficiency by ruminant animals grazing pastures has historically been restrained by an inability to measure feed intake by large numbers of individual animals. Recent advances in portable breath measurement techno
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bed0ac8508c5c82e4cf8fa899e36237f
https://doi.org/10.1071/an20162
https://doi.org/10.1071/an20162
Publikováno v:
Journal of Animal Science. 94:4882-4891
The objective of the study was to evaluate associations among animal performance and methane emission traits under feedlot conditions and in respiration chambers in Angus cattle bred to vary in residual feed intake (RFI), which is a measure of feed e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f20448f3d80757bb02678c76d6bcb24a
https://doi.org/10.2527/jas.2016-0613
https://doi.org/10.2527/jas.2016-0613
Publikováno v:
Journal of animal science. 94(11)
The objective of the study was to evaluate associations among animal performance and methane emission traits under feedlot conditions and in respiration chambers in Angus cattle bred to vary in residual feed intake (RFI), which is a measure of feed e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::32c06404cd581d5adce776d3207dbe42
https://pubmed.ncbi.nlm.nih.gov/27898960
https://pubmed.ncbi.nlm.nih.gov/27898960
Autor:
J I Velazco, P. Rovira
Publikováno v:
New Zealand Journal of Agricultural Research. 53:347-353
A study was carried out in Uruguay (latitude 33° 14′S, longitude 54° 15′W) to assess the impact of shade on climatic conditions and on grazing cattle during summer. Three treatments (no shade, artificial shade provided by cloth and natural shad
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fad1b38fe953719579e0cdf4d09f9569
https://doi.org/10.1080/00288233.2010.525785
https://doi.org/10.1080/00288233.2010.525785
Publikováno v:
Animal, Vol 10, Iss 1, Pp 25-33 (2016)
Methods to measure enteric methane (CH4) emissions from individual ruminants in their production environment are required to validate emission inventories and verify mitigation claims. Estimates of daily methane production (DMP) based on consolidated
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6c527d7ae8bddbfc1fc22baae826bb04
https://pubmed.ncbi.nlm.nih.gov/26303821
https://pubmed.ncbi.nlm.nih.gov/26303821
Publikováno v:
Animal, Vol 9, Iss 12, Pp 1949-1957 (2015)
Spot measurements of methane emission rate (n = 18 700) by 24 Angus steers fed mixed rations from GrowSafe feeders were made over 3- to 6-min periods by a GreenFeed emission monitoring (GEM) unit. The data were analysed to estimate daily methane prod
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b784354436da0e35da8bb76e9a433333
https://pubmed.ncbi.nlm.nih.gov/26301870
https://pubmed.ncbi.nlm.nih.gov/26301870
Publikováno v:
Animal Production Science. 57:627
As daily methane production (DMP; g CH4/day) is strongly correlated with dry matter intake (DMI), the breeding of cattle that require less feed to achieve a desired rate of average daily gain (ADG) by selection for a low residual feed intake (RFI) ca
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2eea6efa941c2c7cd19a20297eaa2ff6
https://doi.org/10.1071/an15111
https://doi.org/10.1071/an15111