Hello,
First of all I would like to bring this to your notice that there are total 102 seats for msc zoology in delhi university . 51 are entrance based and 51 are merit based . Further division of seats looks as stated below.
Exam type - entrance
Genral - 23
Ews - 4
Sc - 8
St - 4
Obc - 12
Looking at your rank and keeping in mind the seat matrics it might be difficult for you to get admission in delhi university for msc zoology. But still I would recommend you to follow the councelling process. Who knows you might get a seat there.
As of now make sure that you keep yourself updated with all the details regarding the councelling process. Do visit the official site regularly.
Good luck