Cattle were traditionally kept on coconut plantations as a means of controlling the growth of grass, and many large copra plantations raised cattle for slaughter. There were 12,500 head of cattle and 67,000 pigs on the islands in 2001. Over 40% of the cattle are raised by small holders. The government's Livestock Development Authority (LDA) maintains about 3,200 head on Guadalcanal and Western Province. The LDA is now mostly a producer of trader pigs and poultry, raising 25,000 chicks and 120 piglets per month for sale. Production of pork has doubled since the early 1980s, yet still has not kept up with domestic demand. About 3,000 tons of meat were produced in 1998.