Thymol

In the 1990s, the Bee Research Centre took part in a screening programme testing the potential effectiveness of over 100 essential oils and essential oil components against the varroa mite. Although sage, hyssop and thyme oils proved interesting, only thymol has been used in acaricide products. Thymol treatments require little effort, and there are a variety of preparations on the market. The advantages and drawbacks of thymol use are listed in the articles "Apilife VAR: A new varroacide with thymol as the main ingredient" and "THYMOVAR for Varroa control".

Use of essential oils for the control of Varroa jacobsoni (Oud.) in honey bee colonies (PDF, 1 MB, 20.01.2017)
A. Imdorf, S. Bogdanov, R. Ibáñez Ochoa, N. W. Calderone (1999)

Evaluating the competitiveness of milk production: The effect of joint cost allocation methods.

Institutional Repository Agroscope

Hoop D., El Benni N.

Evaluating the competitiveness of milk production: The effect of joint cost allocation methods.

Agroscope Science, 168, 2023.
altre lingue: tedesco

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Riassunto:

The global dairy market is highly competitive and cost versus price comparisons and benchmarking with peers can help identify strengths and weaknesses of a business. However, calculating the cost of milk production is not straightforward because milk production inevitably entails the production of joint products such as calves. Based on theoretical considerations and simulated data sets, this study examines how different methods to allocating joint costs affect the estimated cost of milk production. The first method, subtracting revenues of joint products from the cost of the milk production branch, turns out to be less accurate in the majority of modelled scenarios, compared to the ratio method splitting costs between milk and joint products according to their relative sales values. Even though the subtraction method reflects better the ranking order in true cost of milk production, it overestimates the variability in the majority of cases. Considering all strengths and weaknesses, we conclude that the ratio method is the safer choice for allocating costs of joint products because it bears less potential for biased conclusions. The subtraction method should only be applied when farms need to know their break-even milk price for planning purposes or when the exact ranking between farms is of paramount importance for benchmarking.

ISSN Online: 2296-729X
Digital Object Identifier (DOI): https://doi.org/10.34776/as168e
ID pubblicazione (Codice web): 54159 Inviare via e-mail

Inizio pagina

Apilife VAR: A new varroacide with thymol as the main ingredient (PDF, 103 kB, 20.01.2017)
A. Imdorf, S. Bogdanov, V. Kilchenmann, C. Maquelin (1994)

"THYMOVAR" for Varroa control (PDF, 75 kB, 27.01.2017)
F. Bollhalder (1998)

Although the use of thymol leads to residues in the wax and honey, these are negligible from a toxicological viewpoint. Since about 2008 the use of thymol-based products has been declining in Switzerland, and beekeepers making use of these products have tended to experience greater winter losses than those using e.g. formic acid.

Thymol residues in wax and honey after Apilife VAR treatment (PDF, 757 kB, 14.09.2016)
S. Bogdanov, A. Imdorf, V. Kilchenmann (1998)

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Thymol

Evaluating the competitiveness of milk production: The effect of joint cost allocation methods.