Selectors
As a selector (the original, now considered misleading applicable term " concentrate selector " goes to Reinhold Hofmann back) is called in wildlife biology in addition to the Raufutterfressern and mixed types one Hauptäsungstyp of ruminant ungulates . Around 40% of all ruminants are among the selectors.
The food of selectors is poor in plant fibers and cellulose , but rich in easily digestible nutrients such as sugar , starch and proteins . Game finds this food mainly in leaves , flowers , herbs , shoots , buds , acorns and fruits .
The rumen of selectors are smaller than those of comparable species with other types of grazing, as they eat less coarse grazing parts for ruminating, which is also more frequent but shorter. Fermentation also takes place more quickly in the stomach . The speed of digestion does not allow difficult to digest food with a high cellulose content, so easily digestible plant components are consumed in a very targeted manner. Due to the strong selection from the food available, selectors eat food more frequently than comparable species, with eight to twelve grazing periods daily being common.
Selectors are increasingly causing game damage in forestry and agriculture, as their specific food spectrum preferably includes young tree shoots and fresh crops. Flower plantings in parks and gardens are also often perceived by selectors as a food supply if they are easily accessible to game without danger.
Examples of selectors are European species such as roe deer ( Capreolus capreolus ) and elk ( Alces alces ), and also non-European small kudu ( Tragelaphus imberbis ), giraffe ( Giraffa camelopardalis ) and white-tailed deer ( Odocoileus virginianus ).
Individual evidence
- ↑ Andreas König, Martina Scheingraber, Juliane Mitschke: Energy content and quality of food for roe deer (Capreolus capreolus) over the course of the year in differently shaped habitats . Ed .: Center Forest Forest Wood Weihenstephan. Forest research reports Munich, No. 215 . Freising 2016, ISBN 3-933506-46-8 , pp. 5 ( tum.de [PDF]).
- ↑ The feeding of the deer. In: Wildtierportal Bayern. Archived from the original on December 9, 2018 ; accessed on December 9, 2018 .
- ↑ Marcus Clauss: Appropriate feeding of wild animals - what is technically justifiable? In: Teaching and Research Center for Agriculture Raumberg-Gumpenstein (Hrsg.): Report on the 16th Austrian Hunters' Conference 2010 on the subject of game management - focus: feeding and shooting planning . Irdning 2010, ISBN 978-3-902559-39-5 , pp. 27 ff ., doi : 10.5167 / uzh-31354 ( bundesforste.at [PDF]).
- ↑ Juliane Münnich: Intrinsic innervation in the rumen of ruminants of various types of nutrition . Leipzig, Univ., Diss., 2009, p. 7th f . ( d-nb.info [PDF]).