Valuing faba bean and pea for feed

Posted: 16.02.2022
A large proportion of Germany’s protein feed requirement is met using imported soya, especially for pig and poultry feed. Most of the soya is imported from the USA, Argentina and Brazil and is genetically modified. Grain legumes such as faba bean and grain pea, along with rapeseed meal, have the potential to at least partially replace soybean meal for feeding livestock. Since 2015, agri-environmental measures such as "Diverse cropping" have been funded in several German federal states. Among other things, these require that legumes are grown as the main crop on at least 10% of the cropped area each year. Consequently, there is an increasing supply of locally-produced grain legumes in these regions which can either be sold directly to processing companies or used for local feed production. This raises the question of the economic value of the grain as determined by its nutritional constituents. What is the intrinsic economic value of grain legumes for livestock feeding? How much can be paid for grain legumes considering the cost of standard protein sources?

Flowering pea

 

Outcome

Numerous scientific studies show that livestock can be successfully fed with protein-rich cool-season grain legumes such as faba bean, pea and others. On the basis of the ‘Löhr substitution method’, it is possible to compare different feedstuffs with standard feeds based on soybean considering energy and protein content. This indicates the point at which an alternative feedstuff costs as much as the feedstuffs currently used, with approximately the same feed value.

This article helps in calculating the approximate equilibrium price of grain legumes in comparison with other protein and energy sources. With the help of this equilibrium price, a decision can be made as to which feedstuffs are economically preferable for the same feed value (energy and protein).

 

Required information

Some constituents of the feeds to be compared must be known to calculate the substitution value of faba bean and grain pea using the Löhr substitution method. The parameters shown in Table 1 are used.

 

 

Ideally, data for these parameters are available from analyses of the feed ingredients themselves. Published standard values for many ingredients are available but these are often not sufficiently accurate in specific situations to give an accurate assessment of value. The additional costs of using European-grown grain legumes associated with transport and initial processing must be considered so that the faba bean or pea is compared properly with soybean meal.

 

Calculation aids

There are some freely available Excel-based applications that can be downloaded from the internet. These can be used to calculate the value of a new feed ingredient based on how it substitutes for an existing standard feed ingredient. The Excel application “Comparative value of feed – substitution values of feed” from the Landesanstalt für Landwirtschaft, Ernährung und Ländlichen Raum Schwäbisch Gmünd (LEL) covers a range of animal species and types. It is available for download here: https://lel.landwirtschaft-bw.de/pb/,Lde/Startseite/Unsere+themes/animal-keeping

A wide variety of feed ingredients can be selected and compared. For a selected feed component, e.g., faba bean, the programme indicates the substitution price in comparison to two comparable components, usually a protein and an energy supplier such as soybean meal and wheat. It also calculates how much of the previously used feed can be replaced by the alternative feed.

 

Calculation examples

Table 2 provides data for the ingredients of the feeds compared later.

 

 

Table 3 provides data on the value of faba bean for fattening cattle as determined by the cost of soybean meal (45% CP) and the cost of wheat.

 

 

Table 4 provides the equivalent data for pig fattening.

 

 

The substitution value is the value of the alternative as determined by the value of the standard materials it replaces. If the calculated substitution value of the alternative feed is higher than its current market price, including transport and processing (e.g., to meal), its use reduces costs compared to the use of the established standard feed component.

An example based on the scenario from Table 3 illustrates this:

  • Standard feed component prices: wheat (€150/t) and soybean meal (€400/t)
  • The substitution value of faba bean is €268/t (Table 3).
  • Alternative feed component: Faba bean €240/t (purchase price €220/t + €20/t transport and processing)

Introducing the faba bean into the feed reduces feed costs under this scenario. At €240/t, faba bean is a cost-effective alternative to wheat and soybean meal because the value as a substitute for wheat and soybean meal at €268/t is higher than the actual purchase price of 240 € (including transport and processing).

 

Limitations of the method

The presented method takes into account the two feeding parameters energy and protein content of feedstuffs. Many other parameters such as crude fibre content, digestibility, rumen resistance, etc., also play an important role in optimal ration design. In addition, many other feedstuffs which influence and complement each other are usually included. Therefore, it makes sense in specific cases to prepare a detailed ration calculation with the alternative feedstuff after calculating the substitution value in order to evaluate it fully and to be able to make a well-informed decision.

 

Faba bean

 

Key practice points

  • A substitution value must be calculated using comparison with the feedstuffs previously used to assess the economic effect of using faba bean and grain pea as alternative feedstuffs.
  • The energy and protein contents of the feedstuffs, the purchase prices, and any transport and processing costs must be known.
  • The actual calculation can be carried out using freely available software tools.
  • If the purchase price of alternative feedstuffs including transport and preparation is lower than the calculated substitution value, their use becomes economically viable. This use should be further checked with a detailed ration calculation.

Latest

References

LEL Schwäbisch Gemünd, 2017. Comparative value of feed - substitution values of feed Version 1.2. Landesanstalt für Landwirtschaft, Ernährung und Ländlichen Raum Schwäbisch Gmünd. https://lel.landwirtschaft-bw.de/pb/,Lde/Startseite/Unsere+Themes/Animal husbandry

Downloads

Images

  • Blühende ErbsePhotograph: Matthias Rauch
  • Table 1. Feed energy and protein parameters used for assessing value
  • Table 2. Metabolisable energy (ME), crude protein (CP), and prececal digestible (PD) lysine contents of feed components and uses (per kg fresh weight). Source: own analyses, LEL Schwäbisch Gemünd
  • Table 3. Substitution value of faba bean (€/t) for cattle fattening as affected by the price of wheat and soybean meal (45% CP). Source: own calculations according to LEL Schwäbisch Gmünd
  • Table 4. Substitution value of faba bean (€/t) for fattening pigs as affected by the price of barley and soybean meal (45% CP). Source: own calculations according to LEL Schwäbisch Gmünd
  • Faba bean Photograph: Thorsten Haase (LLH)

About this article 

Authors: Philipp Roth
Publisher: Landesbetrieb Landwirtschaft Hessen (LLH)

Copyright: © All rights reserved. Reproduction and dissemination for non-commercial purposes are authorised provided the source is fully acknowledged.

Acknowledgement: Legumes Translated has received funding from the European Union's Horizon 2020 research and innnovation programme under grant agreement No. 817634.
Citation: Roth, P., 2022. Valuing faba bean and pea for feed. Legume Hub. www.legumehub.eu

The content is solely the responsibility of the authors. No warranties, expressed or implied, are made with respect to the information provided. Information relating to the use of plant protection products (pesticides) must be checked against the product label or other sources of product registration information.

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