This is a list of popular game species in South Africa with live weight, slaughter % and carcass (slaughtered) weight. This comes from the book "Hunter's Handbook", edited by Tim Ivins. I actually find it strange that he hasn't included warthog and bushpig on this list. Also, there is a mistake. Fifth on the list he has roan, and then later on he has it again. But, as far as I know roan is the second largest antelope in the world after eland. Thus, the one fifth on the list cannot be correct - most probably something like tsessebe.
Weight list:
Live (kg) %
Slaughtered (kg)
========
Impala
39-80 58
22-46
Springbuck
18-36 51
9-21
Blesbok
60-82 53
32-44
Bontebok
70-90 53
37-48
Roan (tsessebe?)
136-160 55
75-88
Red Hartebeest
160-182 55
88-100
Eland
460-910 51
235-464
Gemsbok
180-216 55
99-118
Kudu
150-300 57
86-172
Bushbuck
63-73 55
35-40
Nyala
90-136 55
50-75
Waterbuck
204-270 55
112-149
Reedbuck
50-80 55
28-44
Mountain reedbuck
22-38 55
12-21
Grey rhebuck
18-25 55
10-14
Blue wildebeest
215-250 58
125-145
Black wildebeest
90-160 55
50-88
Burchell's Zebra
270-335 55
149-184
Cape Mountain Zebra 276-372
55 152-205
Buffalo
510-590 50
255-295
Giraffe
600-1400 55
330-770
Sable
180-230 55
99-127
Roan (again?)
227-273 55
125-150
Steenbuck
14-
55
8-
Grysbuck
8-14 55
4-8
Oribi
14-20 55
8-11
Suni
4-9 55
2-5
Klipspringer
16-18 55
9-10
Duiker
10-14 55
6-8
Red Duiker
11-14 55
6-8
Blue duiker
4-9 55
2-5