Portable Accumulation Chamber
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In Australia and New Zealand an alternative method was developed for the short-term measurement of Methane Production Rate (MPR) of sheep using Portable Accumulation Chambers (PAC) during 1 hour without leading discomfort to the animals. Similarly to RC, CH4 emissions recorded in PAC include gases from flatulence in addition to eructed and expired CH4, but only during 1 hour. For a detailed comparison of the PAC and respiration chamber methods see Jonker et al. (2018)[1].
- ↑ Jonker, A., Hickey, S.M., Rowe, S.J., Janssen, P.H., Shackell, G., Elmes, S., Bain, W.E., Wing, J., Greer, G.J., Bryson, B., MacLean, S., Dodds, K.G., Pinares-Patiño, C.S., Young, E.A., Knowler, K. Pickering, N.K., and McEwan, J.C. 2018. Genetic parameters of methane emissions determined using portable accumulation chambers in lambs and ewes grazing pasture and genetic correlations with emissions determined in respiration chambers. J. Anim. Sci. 96:3031-3042. doi: 10.1093/jas/sky187.
