Why does the Food ontology not use "OWL:NamedIndividual"?

Question

In the food ontology http://www.w3.org/TR/2004/REC-owl-guide-20040210/food#, I am seeing this way of representing classes and individuals:

<owl:Class rdf:ID="RedMeat">
  <rdfs:subClassOf rdf:resource="#Meat"/></owl:Class>
<SweetDessert rdf:ID="Cake"/>
<SweetFruit rdf:ID="Bananas"/>
<SweetFruit rdf:ID="MixedFruit"/>

For the individuals "Cake", "Bananas" and "MixedFruit", why doesn't it use:

<OWL:NamedIndividual>
</OWL:NamedIndividual>

Is that because the food ontology is represented in old syntax?