That is a good demonstration of how variable it can be. I have a female whom is 3.5 years and about 38 inches and 1950gm. My youngest male is now just 3 years old and just over 3 feet and 1390gm. My oldest male (27+ years) is just under 4 feet and 2000 gm. There is quite a variation, I tend to feed adults (over 100gm about 2-5% of the body weight.) every 7 days that is what works for me, not what more would suggest as over fed, I also have a number of subsaharan animals of pure or mixed linage.