Retired fellow at home in cattle-raising country (5)
I believe the answer is:
niger
'country' is the definition.
(African country)
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for niger that I've seen before include "Landlocked W African republic" , "West African republic" , "River, Africa's largest delta" , "Land-locked country and river of W Africa" , "River of West Africa" .)