Glossary entry (derived from question below)
German term or phrase:
Str. Faser
English translation:
straw fibre
German term
Str. Faser
Liebe Kollegen, wofür steht hier "Str."? Es geht um Tierfutterbestandteile. Für Hinweise wäre ich sehr dankbar.
| 3 +2 | straw fibre |
Armorel Young
|
| 4 | structural fibre |
Ellen Kraus
|
Non-PRO (1): Edith Kelly
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Proposed translations
straw fibre
Why feed straw?
As donkeys have a very high fibre, but low sugar, requirement straw makes a good basic feeding product. Donkeys are generally able to eat as much straw as they like to fill their bellies and keep their digestive systems moving without consuming too much energy (although testing straw before feeding is recommended as some modern strains can be higher in energy than expected). Consuming too much moderate to high energy food (particularly products containing cereal grains) causes weight gain and has been associated with development of gastric ulcers and laminitis amongst other things.
https://www.thedonkeysanctuary.org.uk/health-and-care/feedin...
Austria
more than thirty years of experience
Native in: German 
Works in: Greek to German, English to German, Greek to English, and 5 more.
structural fibre
which of the two sorts is meant here depends on the context.
Fiber in Dog Foods - PetEducation.com
www.peteducation.com/article.cfm?c=2 1659&aid=656
Fiber is one of the nutrients listed on every bag of pet food and can have many ... Fiber can be classified according to their structure, the rate at which they are ...
Discussion
Page 2:
http://2015.dlg.org/fileadmin/downloads/fachinfos/futtermitt...
Maybe there's a bit more context you could share (another instance of the word or some other "Faser" or something).
Regards