Olli Peltoniemi

Introduction:In mated sows, corpus luteum (CL) function is important for the establishment of the pregnancy. The maximum CL size is established at day 8 - 9 of the pregnancy and maintained autonomous until day 12. Then, CL maintenance will depend on hormones such as LH and PGF2α. PGF2α is released from the endometrium at day 14 and triggers CL regression. This regression can be prevent ...

INTRODUCTIONYeast derivatives (YD) are widely used in animal nutrition as natural additives. YD contain glucomannoproteins, betaglucans and nucleotides complex derived by acid hydrolysis of the cell wall of yeasts Saccharomyces cerevisiae. YD can bind and inhibit pathogen bacteria like Salmonella Spp, Clostridium Spp and E. Coli, therefore promoting growth of beneficial gut bacteria. YD have been ...

IntroductionLactogenesis is induced hormonally by a dramatic drop of progesterone (P4) concentrations which leads to a pre-partum peak of prolactin (PRL). In sows, impaired production of colostrum has been found to be related to a delay in the decrease of P4 concentrations during the pre-partum period.We assumed that this condition might affect also the quality of colostrum (IgG concentration). Ou ...

BackgroundDirective 91/630/EEC sets the minimum standards for the protection of pigs in the EU. It has been substantially amended several times. Directive 2008/120/EC [1] collates the existing legislation into one document. The most important items in this Directive in relation to the welfare of pregnant sows pertain to the necessity of group housing from 4 weeks after service to one week before e ...