BeskrivningPost weaning diarrhea (PWD) frequently associated with enterotoxigenic Escherichia coli (E. coli) infection, is one of the major welfare and economic problems in pig production after weaning. The aim of this study was to examine whether hydrolyzed yeast (YD) based on whole brewery yeast (Saccharomyces cerevisiae) added to the creep feed of suckling and newly weaned piglets prevent PWD and improve performance. Piglets from 20 litters of F4 fimbriae receptor positive sows (therefore F4 receptor positive piglets) were randomly allocated to two treatment groups: YD group with 3 g/kg or 2 g/kg of YD added to the piglets creep feed from 2 week of age until 2 week post weaning (PW) and from week 2 to 5 PW, respectively, and control group (C) no added YD. At weaning (4 weeks of age) 2 piglets (n = 40) from each litter were individually housed and either experimentally E. coli challenged or placebo treated on d 1 and 3 PW. Further, performance was measured on 3 group-housed piglets (n = 60) from each litter. Fecal consistency scored (FCS) at 1 to 7, where 1 being hard, dry and 7 being foamy yellow. FCS was better in placebo than in E. coli-challenged piglets, and in YD piglets than in C. YD piglets had lower risk of PWD (P = 0.001) and the effect was evident in both placebo and challenged piglets (P = 0.010 and P = 0.038, respectively). In challenged piglets fecal shedding of haemolytic E. coli was significantly lower in YD than in C piglets (P = 0.026). In placebo piglets the latency time to first observation of PWD was longer in YD than in C piglets (P = 0.048). Feed intake from weaning to d 6 PW tended to be higher in YD piglets than in C both in challenged and placebo piglets. In group-housed piglets, less medical treatments against PWD were needed for YD than C pens during the first 3 weeks PW (P = 0.078). The average daily gain did not differ between the treatments. In conclusion, YD may prevent PWD after weaning at 4 week of age if added to the creep feed 2 weeks before weaning and post weaning.
|Period||4 nov 2019 → 6 nov 2019|
|Vid||Hankkija Oy, Finland|