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The objective of this study was to examine productive performance and predict factors affecting operating income of small-scale contract farming of swine (SCFS) in Lampang, Thailand. Ten SCFSs were selected by purposive sampling as primary data sources for two consecutive fattening cycles during the year 2015-2017. Data indicated that the SCFS was feeder pig finishing system which herd size (HS) averaged 502 head/farm. The animals consumed approximate 1.59 kg of feed/head/d. The average daily gain (ADG) was 675.22 g/d and feed conversion ratio (FCR) was 2.42. The mean of fattening time (FT) averaged 158 d/cycle. The culling rate (CR) and mortality rate (MR) were 0.17% and 2.50%, respectively. The predicted operating income (POI) was estimated by multiple linear regressions. The equation was: POI = 2,700.912 + 0.027HS – 7.119CR – 18.225MR + 16.885ABW + 806.466FI – 4.142ADG – 420.281FCR – 9.719FT (ABW = average body weight; FI = feed intake) with r = 0.899, r = 0.808, p-value = 0.009. According to stepwise procedure, the potential equation was: POI = 323.664FI – 9.769MR – 22.635 with r = 0.837, r = 0.701, p-value = 0.000. This predicted equation would benefit as a monitoring index for SCFS to manage their expected operating income and proper farm management to be further profitable and sustainable.

Case Study: Productive Performance and Prediction of Operating Income of Small-Scale Contract Farming of Swine in Lampang, Thailand