Articles - Genetics and reproduction

Why do my sows come into heat soon after service?

Factors related to the semen dose, the boar, or the sow can cause regular returns to estrus.

There are several factors that can cause an abnormally long estrous cycle.

What are the causes of these returns?

This article lists the main infectious causes that can lead to irregular returns to estrus.

Negre Mallorquí pig is a native breed from Mallorca, characterized by its high rusticity and adaptation to the Mediterranean climatic conditions.

Moravka is a breed of combined production traits that was created as a result of unsystematic crossings of Šumadinka and Berkshire.

If the farrowing rate is less than ideal, with a normal percent of returns to estrus and abortions, we must consider the open sows.

If my farrowing rate is low, but the returns to estrus, abortions, and culled pregnant sows are all normal, I probably have dead sows...

The Mora Romagnola is a breed of pig from Emilia-Romagna, in northern Italy. The name ‘Mora’ was codified in 1942 and is due to its colour, dark brown tending to black.

Mangalitsa is an autochthonous fatty type pig breed, created from the old Serbian Šumadinka breed.

Lietuvos Baltosios senojo tipo pigs are remaining purebred pigs of local Lithuanian pig breed (Lietuvos Baltosios) adapted to the specific local environment and locally available feedstuffs.

In the first part of this article series we addressed how to correctly stimulate oestrus. In this article we continue talking with swine reproduction specialist, Javier Gil Pascual, focusing on heat detection.

Does a high retention rate indicate high productivity?

The Lithuanian indigenous wattle (Lithuanian: Lietuvos vietinė) is a domestic pig native to Lithuania and is one of the oldest pig varieties in Europe.

This chapter presents the history and the current state-of-the-art in the only Slovenian autochthonous pig breed - Krškopolje pig (Krškopoljski prašič).

History and current status of the Iberian breed, an autochthonous pig breed of the Iberian Peninsula.

Gilts have more returns to estrus... but why?

History and current status of Gascon pig breed. This French autochthonous breed, which almost disappeared, now enjoys a new boom.

Which indicator best reflects performance - farrowing rate or non-productive days?

History and current status of Black Slavonian (Crna slavonska) pig breed, an autochthonous pig breed in the Republic of Croatia.