Effect of Fermented Liquid Potato Hash Diet with or without Exogenous Enzyme on Growth Performance of Growing Large White × Landrace Crossbred Pigs

The study aimed to evaluate growth performance of pigs fed fermented liquid potato hash with or without exogenous enzymes. A back-slopping fermentation approach was followed to prepare fermented diets. Potato hash was mixed with water at 1:2 ration and fermented for 8 hours before being fed to pigs. Diets were stored in a closed 100 L drum at 25°C room temperature. Diets containing either 200 g/kg fermented liquid potato hash (LFPH) (either enzyme treated or not) or no fermented potato hash (control) were formulated to to provide 14 MJ/kg digestible energy (DE), 180 g crude protein (CP)/kg and 11.6 g lysine /kg. Dietary treatments were control (no LFPH), enzyme treated LFPH (LFPHE), and untreated LFPH (ULFPH). The exogenous xylanase enzyme (Natugrain TS L®) was added in LFPH diet to provide a minimum of 560-840 TXU/TDU xylanase per kg feed, at an inclusion rate of 100 g/tonne.The diets were fed ad-lib to 36 Large White x Landrace crossbred grower pigs (25±2.3 kg BW) that were individually housed. Pigs were allocated in a complete randomized design with six boars and six sows per diet. The control had higher (P<0.001) final weight, average daily gain (ADG) and lower (P<0.001) average daily feed intake (ADFI) and feed conversion ratio (FCR) compared to pigs fed diets containing LFPH. However, the LFPHE diet had higher (P<0.001) final weight, ADG and lower (P<0.001) ADFI and FCR compared to diet containing ULFPH. It was concluded that diet containing LFPHE may be an alternative feed source for growing pigs as indicated by higher intake compared to ULFPH.