The economics of Pla sawai (Pangasius suchi Fowler) production under integrated pig-fish system in Pathumthani province, Thailand
1986
Leenanond, Y.
The profitability of the farms was analyzed using the following financial measures: net operating income, net farm income, and net profit. The cost structure of the farms was dominated by variable costs which contributed about 82% of the total fish production cost. In general, the fish culture operations of integrated "pla sawai" farmers were profitable. However, the pig growing operations were found to be unprofitable, mainly because of low prices of fattened pigs coupled with increased prices of inputs, especially feeds. A Cobb-Douglas production function was employed to analyse the production technology of Pangasius production under integrated pig-fish system and under two fish production systems. In the input-output model developed for all farms in the province, 92.48% of the variation in output could be explained by stocking density, manure loading1875 rate, supplemental feeds, size and age of pond, hired labor, operating costs, amount of capital investment and experience of farmers. However, only stocking density, manure loading rate, supplemental feeds, age of ponds and operating costs were found to be statistically significant. Farmers could be obtain higher profits if stocking density is increased and by reducing the manure loading rate and the quantity of supplemental fe
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