[en] The objective of this study was to investigate the production of rice distiller’s by-product and its use as feed for pigs in three provinces (Hai Duong, Hung Yen and Bac Giang) of Northern Vietnam to identify annual supply resource of the by-product as pig feed. A total of 120 rice alcohol producers classified by production scales (large, medium and small) were interviewed from January to August 2015. Additionally, sixty-three rice distiller’s by-product samples were collected from investigated areas to determine nutrition components and to evaluate the effect of storage time (from the first to the seventh day) on quality of rice distiller’s by-product. Annual rice distiller’s by-product production was 4.8, 3.0 and 2.1 tons per household for large, medium and small scales respectively (P<0.001). The dominance of swine quantity in large-scale alcohol producing households in comparison with smaller number of pigs raised in medium and small ones (P<0.05) proved a clear relation between number of pigs in household and alcohol production scales. The amount of by-product used in daily diet of sows in all three scales gradually reduced from pregnant to lactating sows. The utilisation of by-product for fattening pigs was significantly diversified among different scales (33.6%, 29.3% and 25.3% for large, medium and small scales respectively) (P<0.05). The rice distiller’s by-product was a rich source of crude protein (26.2%), neutral detergent fiber (33.7%), lactic acid (2.27 %) and gross energy (20.41 MJ/kg DM). Furthermore, its nutritive values were stable under ambient condition during a week (P>0.05).
