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The $\bar{\Lambda} / \Lambda$ and $\bar{\Lambda} / K^0_\mathrm{S}$ productionratios are measured by the LHCb detector from $0.3\,\mathrm{nb}^{-1}$ of $pp$collisions delivered by the LHC at $\sqrt{s} = 0.9$\,TeV and$1.8\,\mathrm{nb}^{-1}$ at $\sqrt{s} = 7$\,TeV. Both ratios are presented as afunction of transverse momentum, $p_\mathrm{T}$, and rapidity, $y$, in theranges {$0.15 < p_\mathrm{T} < 2.50\,\mathrm{GeV}/c$} and {$2.0<y<4.5$}.Results at the two energies are in good agreement as a function of rapidityloss, $\Delta y = y_\mathrm{beam} - y$, and are consistent with previousmeasurements. The ratio $\bar{\Lambda} / \Lambda$, measuring the transport ofbaryon number from the collision into the detector, is smaller in data thanpredicted in simulation, particularly at high rapidity. The ratio$\bar{\Lambda} / K^0_\mathrm{S}$, measuring the baryon-to-meson suppression instrange quark hadronisation, is significantly larger than expected.

Measurement of $V^0$ production ratios in $pp$ collisions at $\sqrt{s} = 0.9$ and 7\,TeV