Effekte systemtypischer Rationen auf Reproduktionsleistung und Gesundheit von laktierenden Zuchtsauen in der ökologischen Landwirtschaft

Summary

The aim of the present study is to formulate dietary concepts for lactating sows for
suggestion by advisory services. In a feeding experiment, the effects of two different
types of diets are investigated on performance and animal health. The treatments
differ in the expected amino acid supply (U=unbalanced amino acid pattern; O= balanced).
Data from 41 farrowings do not show significant differences in live weight
(O=228,6 kg; U=227,9 kg), feed intake and serum urea concentration neither at the
time of transition to farrowing pen nor at the time of weaning. Serum concentration of
NEFA was significantly (p=0,020) higher in treatment O. Litter size of weaning piglets
differs significantly (p=0,037) between treatments. In treatment U increased piglet
mortality leads to significantly lower litter weight at weaning despite similar daily gains.