Despite the expectations, collectivization led to a catastrophic drop in farm productivity, which did not return to the levels achieved under the NEP until 1940. The upheaval associated with collectivization was particularly severe in Ukraine and the heavily Ukrainian Volga region. Peasants slaughtered their livestock en masse rather than give them up. In 1930 alone, 25% of the nation's cattle, sheep, and goats, and one-third of all pigs were killed. It was not until the 1980s that the Soviet livestock numbers would return to their 1928 level. Government bureaucrats, who had been given a rudimentary education on farming techniques, were dispatched to the countryside to "teach" peasants the new ways of socialist agriculture, relying largely on theoretical ideas that had little basis in reality. Even after the state inevitably won and succeeding in imposing collectivization, the peasants did everything they could in the way of sabotage. They cultivated far smaller portions of their land and worked much less. The scale of the Ukrainian famine has led many Ukrainian scholars to argue that there was a deliberate policy of genocide against the Ukrainian people. Other scholars argue that the massive death totals were an inevitable result of a very poorly planned operation against all peasants, who had given little support to Lenin or Stalin.