You can use SRV records:
_service._proto.name. TTL class SRV priority weight port target.
Service: the symbolic name of the desired service.
Proto: the transport protocol of the desired service; this is usually either TCP or UDP.
Name: the domain name for which this record is valid, ending in a dot.
TTL: standard DNS time to live field.
Class: standard DNS class field (this is always IN).
Priority: the priority of the target host, lower value means more preferred.
Weight: A relative weight for records with the same priority.
Port: the TCP or UDP port on which the service is to be found.
Target: the canonical hostname of the machine providing the service, ending in a dot.
Example:
_sip._tcp.example.com. 86400 IN SRV 0 5 5060 sipserver.example.com.
So what I think you’re looking for is to add something like this to your DNS hosts file:
_minecraft._tcp.arboristal.com. 86400 IN SRV 10 40 25565 mc.arboristal.com.
_minecraft._tcp.arboristal.com. 86400 IN SRV 10 30 25566 tekkit.arboristal.com.
_minecraft._tcp.arboristal.com. 86400 IN SRV 10 30 25567 pvp.arboristal.com.
(Minecraft supports SRV records, as of 1.3.1, with the service name minecraft)
On a side note, I highly recommend you go with a hosting company rather than hosting the servers yourself. It’s just asking for trouble with your home connection (DDoS and Bandwidth/Connection Speed), but it’s up to you.