Animal husbandry is an underdeveloped sector in the Mozambican economy. A lack of credit, deadly epizootic diseases, and other diseases carried by the tsetse fly make a commercially viable animal husbandry industry almost impracticable for the African traditional farmers, who predominate in this sector. In 2001 there were an estimated 1,320,000 head of cattle, 392,000 goats, 180,000 hogs, and 125,000 sheep. The number of chickens was estimated at 28 million; ducks, 670,000. Beef and veal production was estimated at 38,100 tons; poultry meat, 36,800 tons; cows' milk, 60,400 tons; and hen eggs, 14 million. Mozambique must import substantial quantities of meat and livestock products.