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Fermented and nonfermented liquid feed to growing pigs: Effect on aspects of gastrointestinal ecology and growthperformance
N. Canibe1 and B. B. Jensen
Danish Institute of Agricultural Sciences, Department of Animal Nutrition and Physiology, Research Center Foulum, Tjele, Denmark
ABSTRACT: Theeffect of feeding dry feed (DF), nonfermented liquid feed (NFLF), and fermented liquid feed (FLF) to growing pigs on aspects of gastrointestinal ecology and on performance wasinvestigated. Nonfermented liquid feed was prepared by mixing feed and water at a ratio of 1:2.5 immediately before feeding. Fermented liquid feed was prepared by mixing feed and water inthe same ratio as NFLF, and stored in a tank at 20°C for 4 d, after which half the volume was removed twice daily at each feeding and replaced with the same volume of feed and watermixture. A total of 60 pigs (initial BW of 30.7 kg) from 20 litters was used. Twenty pigs, housed individually, were allotted to each of the diets and fed restrictively. Five pigs fromeach diet were sacriﬁced at an average BW of 112 kg and digesta from the gastrointestinal tract (GI-tract) was obtained to examine variables describing some aspects of thegastrointestinal ecology. Fermented liquid feed contained high levels of lactic acid bacteria (9.4 log cfu/g) and lactic acid (approximately 169 mmol/kg), low levels of enterobacteria (