TTL

[Madan Rai]

hi
can some body tell me whats wrong in my zone file...the error messages 
says this..

Aug 17 18:54:55 ns1 named[983]: Zone "lederwaren-ask.de" (file 
l/p-lederwaren-ask.de): No default  TTL ($TTL <value>) set, using SOA 
minimum instead.


my zone file
i know there is something wrong with TTL ,..but where and how to correct 
the same.

@                IN       SOA        ns1.abcd.com.        
hostmaster.abcd.com.  (
               3000000113        ;serial
               10800             ;refresh 3 hours
               3600              ;retry 1 hour
               604800            ;expire 1 week
               18000   )             ;default TTL 5 HRS

;Name Servers
lederwaren-ask.de.                IN        NS        ns1.abcd.com.
lederwaren-ask.de.                IN        NS        ns2.abcd.com.
;
;Mail Servers
lederwaren-ask.de.                IN        MX 10     mail.abcd.com.
;
;ip addresses
lederwaren-ask.de.                IN        A         127.0.0.1
www                            IN        A         127.0.0.1