World Bank natural assets of Somalia study ----> http://documents.worldbank.org/curated/ ... y-2018.pdf

Note:Gedo's largest and most sizable minority is Rahanweyn and as you can see from Bay, they definitely are not prone to owning much livestock having completely foregone infavor of settled farming.
You can imagine then that the livestock numbers of Gedo represent Marehan completely.
3 other observations
1. Southerners as agricultural people do not rear much camels apart from Marehan...they do love their cattle though understandably
2. Hiiraan is the other region that comes close to the numbers and impressive quantities of all 4 groups of livestock...unlike Gedo though, Hiiraan numbers are shared by huge diversity of pastoral clans like Xawaadle, Gaaljecel, Jajeele, Baadicadde, Habar Gidir, Murusade, Sheekhaal, etc.
3. Somaliland and northerners in general (including regions like Nugaal) are huge in sheep numbers and some in goats (Sanaag has the most of both)...they do not rear much cattle though understandably
Remember
P. S. Recall also that Caabudwaaq district has the most camels of any district in central Somalia so much of Galgaduud and Mudug numbers belong to Marehan and that upwards of 1/2 or more even of Bakool's herd are really Marehan's there for the short wet season (the long wet season they pass Bakool to Afdheer and Cherity and the short and long dry seasons they are either Ceel-waaq to Diif for short and Luuq to Afmadoow not far from the Jubba River in long dry season).