The Aalstreep (aka Witrik, Ruggelde, Witrug; Dutch Whitebacked in English) is a historical name for the Witrik, a color-sided variety of Dutch cattle.
Witrik color-sided patterns range from:
Witrik colors also vary; they can be:
You can also go to:
The Cow Wall® of The Netherlands
My Daily Cow® The Netherlands and read about other Dutch cattle breeds.