Anna Rzasa

Introduction: Leptin is the hormone produced in the adipocytes of white adipose tissue. Concentration of leptin in blood serum is correlated with thickness of backfat. It was confirmed that sows with higher leptin concentration show heat faster after weaning. To properly choose sows for mating, it is necessary to determine their body condition. It could be done using BCS (subjective method) or USG ...

Introduction: They are several benefits of using IgY as a feed additive. Egg yolk or yolk plasma as a feed additive may improve the production results by two ways: 1) stimulation of growth rate through metabolism improvement and/or increasing feed intake; 2) stabilization and enhancing the gastrointestinal tract immune protection. The aim of the study was to compare two ways of IgY administration ...