Grain Consumption by Mallards

Grain Consumption by Mallards

Male mallards (Anas platyrhynchos) kept in outdoor pens ate an average of 70 g (dry weight) of unthreshed barley per day (225 kcal metabolizable energy [ME]) at a mean temperature of 15 C. Consumption of hard wheat and durum wheat was about 12% less but total ME intake was similar for the 3 grains....

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Wildlife Society bulletin 1979-04, Vol.7 (1), p.35-39
1. Verfasser: Sugden, Lawson G.
Format: Artikel
Sprache:eng
Schlagworte:
Aerial locomotion
Barley
Cost estimates
Ducks
Grains
Materials flow
Species
Waterfowl
Weight gain
Wild birds
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:Male mallards (Anas platyrhynchos) kept in outdoor pens ate an average of 70 g (dry weight) of unthreshed barley per day (225 kcal metabolizable energy [ME]) at a mean temperature of 15 C. Consumption of hard wheat and durum wheat was about 12% less but total ME intake was similar for the 3 grains. After adjusting estimates for the additional energy costs of free existence, it was proposed that between 95 and 115 g (14% moisture assumed) would be a reasonable estimate of daily grain intake by field-feeding mallards during the mid-August to early October period.
ISSN:0091-7648
1938-5463