For the benefit of non-Russian speakers, and according to google:
Viktor says that the article's claim about horses being about as efficient as cows is incorrect due to milk production. Cows and horses both yield 336
after 20 days and have similar hunger rates (0.86 vs 0.84), yet pregnant cows also produce milk. If the cow is producing milk (pregnant) for 27 days, this amounts to 378
; 2.13 times as efficient as a horse.
From my own understanding:
Killing either a horse or cow as a baby yield the exact same result (67 = 3.35 nutrition) with no extra nutrition needed. Killing either as juvenile yields 168 , for a net nutrition of 3.36 for the horse and 4.272 for the cow [nutrition per day = 0.222; 0.356]. As adults, both yield 336 for a net nutrition of 8.82 and 7.856 respectively. For a cow to generate more nutrition, it needs to produce at least 20 , which corresponds to 2 milking cycles (easy enough). At the ideal male/female ratio of 0.23, cows beat horses after 3 milking cycles.
None of the values of the previous paragraph seem consistent with Animal husbandry#Butchering(no milk) or List of animals(with milk), meaning I'm either failing to consider something important or my math is wrong somewhere. For whats worth, both tables agree that cows are more efficient than horses for meat production purposes (and that Lava snail are the best pen animal for meat, but that's unrelated).