The possibility to improve different sow reproduction traits, such as age at puberty, oestrous
symptoms, ability to become pregnant, litter size, piglet survival and weight, milk production …

One of the major determinants for litter size in pigs is prenatal mortality. It occurs most
frequently during the first few weeks of gestation and can be attributed to abnormalities in …

The evolutionary strategy adopted by the pig is to produce a large number of relatively
undeveloped offspring. Such a strategy demands that relatively little investment is made in …

Data from Dutch Landrace sows were used to estimate genetic parameters for reproduction
traits in the first six parities. Analyses were performed with DFREML using a model with …

Selection for total number of piglets born (TNB) since 1992 has led to a significant increase
in this trait in Danish Landrace and Danish Yorkshire but has also been accompanied by an …

Amongst all fully formed piglets at the end of gestation, piglet survival until weaning (PS) is
on average 81%. Selection for fast lean growth and increased litter size tends to decrease …

Peri-and postnatal survival data, including birth weights and cross-foster information from
two line/farm combinations with 33 717 and 29 200 piglets, respectively, were analyzed to …

The objective of this study was to analyse the relationship between direct and maternal
genetic effects on litter size and piglet survival. The analyses were performed on records …

Genetic correlations between reproduction and production traits were estimated in swine.
Reproduction traits investigated were age at first service (AFS), number of live-born piglets …

The aim of this study was to estimate genetic and phenotypic parameters for the three
mortality traits crushing, stillbirth and total mortality in piglets, and their respective …