IAG ring test feed composition 2016

Raamsdonk, L.W.D. van; Rhee, N. van de; Pinckaers, V.G.Z.; Vliege, J.J.M.

doi:10.18174/393610

Cited by 6 publications

(7 citation statements)

References 1 publication

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“…The results of this ring test are being published in a separate report (van Raamsdonk et al, 2016). (EC, 2013a), its corrigendum (EC, 2013b) and the accompanying SOPs.…”

Section: Methodsmentioning

confidence: 99%

IAG ring test animal proteins 2016

Raamsdonk

Rhee

Scholtens-Toma

et al. 2016

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MicroscopyAll participants were requested to determine the presence or absence of land animal and/or fish, to indicate the type of material found and the method used.Incorrect positive results (positive deviations) were expressed in a specificity score and incorrect negative results (negative deviations) were expressed in a sensitivity score. An optimal score is 1.0.The results are analysed in two ways: numbers below threshold (between 1 and 5 particles per determination cycle inclusive) have been considered positive and as alternative considered as negative. By comparing both ways of analysis it is possible on one hand to compare the results with those from previous ring trials (there these numbers were considered positive based on the legal principle of zero tolerance), and on the other hand to compare it to the official method (where numbers between 1 and 5 are considered negative).Most of the specificity and sensitivity scores for microscopy were at good or reasonable levels. In the combination of fish meal (0.1%) and ruminant MBM (0.1%) the detection of fish material was sub optimal. Considering numbers of particles below threshold as negative, the sensitivity scores show a considerable drop. The results indicate that the overall performance of the microscopic method is satisfactory, but applicants of the microscopic method could benefit from good and effective training and documentation in order to achieve a higher reliability in identifying particles. PCRThe specificity (samples A and B) and sensitivity (samples C and D) scores for PCR were between 0.87 and 0.91. Combined scenarios for microscopy and PCR.Several participants applied incorrect numbers of determination cycles, either too many or too less.The scenarios for correct combination of microscopy and/or PCR are published in an accompanying SOP. Several deviations from these scenarios were applied, such as examination by PCR of the terrestrial animal feeds, reporting the presence of fish in the fish feeds, and the absence of a final conclusion combining the results of both methods where appropriate. It is, however, a very good situation to have all (intermediate) results reported for each of the two methods in order to have a good documentation in the framework of a ring test.

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“…The results of this ring test are being published in a separate report (van Raamsdonk et al, 2016). (EC, 2013a), its corrigendum (EC, 2013b) and the accompanying SOPs.…”

Section: Methodsmentioning

confidence: 99%

IAG ring test animal proteins 2016

Raamsdonk

Rhee

Scholtens-Toma

et al. 2016

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“…The balance between the two types of pulp, beet and citrus pulp, shows that in two different combination of shares the citrus pulp remains to be underestimated. Wheat showed an overestimation in the ring test of 2015 even at a share of 56% (van Raamsdonk et al, 2015). Overestimations at low spike levels was also found in a study into quantification of fish meal in compound feeds (Veys et al, 2008).…”

Section: Label Controlmentioning

confidence: 82%

“…Only once the incorrect label was indicated as correct, but this was not based on an analysis of composition as far as reported The sample for the 2016 version of the IAG test on composition of a compound feed had a comparable formulation as the current sample 2017-B (van Raamsdonk et al, 2016). The comparison of the two tests is given in Figure 3.…”

Section: Label Controlmentioning

confidence: 99%

IAG ring test feed composition 2017

Raamsdonk

Smits

Vliege

et al. 2018

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“…We also note that the QFI has been linked to the canonical energy in gravitational physics [42] and can be expressed in terms of the relative entropy [43], developments which could potentially be exploited for more efficient numerical calculations of the QFI.…”

Section: Discussionmentioning

confidence: 99%

Estimates of the quantum Fisher information in the S=1 antiferromagnetic Heisenberg spin chain with uniaxial anisotropy

Lambert

Sørensen

2019

Phys. Rev. B

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The quantum Fisher information is of considerable interest not only for quantum metrology but also because it is a useful entanglement measure for finite temperature mixed states. In particular, it estimates the degree to which multipartite entanglement is present. Recent results have related the quantum Fisher information to experimentally measurable probes. While in principle possible, a direct evaluation of the quantum Fisher information at finite temperatures is technically challenging and here we show that a simple estimate can be obtained for materials where the single mode approximation is valid. We focus on the S = 1 anti-ferromagnetic Heisenberg model with uniaxial anisotropy. Quantum Monte Carlo thechniques are used to determine low temperature correlations from which the quantum Fisher information can be estimated within the single mode approximation. The quantum Fisher information is compared to the quantum variance for the staggered magnetization operators in the transverse direction and inequalities between the quantum Fisher information, the quantum variance and the full variance are discussed. Both the quantum and full variance as well as the quantum Fisher information are examined at finite temperatures above the isotropic point and at the quantum critical point for the Haldane-Néel transtion. A finite size scaling study of the quantum Fisher information is performed at the quantum critical point and used to confirm the Ising nature of the Haldane-Néel transition.

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IAG ring test feed composition 2016

Cited by 6 publications

References 1 publication

IAG ring test animal proteins 2016

IAG ring test animal proteins 2016

IAG ring test feed composition 2017

Estimates of the quantum Fisher information in the S=1 antiferromagnetic Heisenberg spin chain with uniaxial anisotropy

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