The oldest reference to a farrowing pen dates back to a 17th-century donation document. In it, the King of Castile Alfonso VI cedes the village of Saviñán (today La Torresaviñán) to the bishop of Sigüenza and his descendants, making reference to a farrowing house, which in the original document, written in Latin, calls “ovetarium”, and which is located in La Serna del Obispo, in La Torresaviñán.[4]​.

However, it is likely that it was the Romans who introduced this construction to our peninsula, since they also ordered livestock and agricultural operations. The gabled clay tile roof, the interior structure and the rectangular floor plan are typical of Hispano-Roman architecture. The pre-Roman towns, on the contrary, built houses with a circular plan and the roof was made of arbors, without tiles. It can be assumed that the Hispano-Romans of the Visigoth period first, and the Hispano-Arabs later, continued using the Roman farrowing house, ceding their construction tradition to the Christian kingdoms through the space of coexistence that was the "extremadura" of the century, understanding as such all the lands that were south of the Duero River.

Located in a wilder natural environment than the current one, the farrowing farm allowed man to exploit livestock in rural areas without suffering the prey of wild animals such as bears, wolves and foxes. It also allowed cattle to be left unattended when they gave birth, and since the smell of the placenta attracted predators, the use of the birthing pen was essential. Similarly, the period between the emergence of cereals - around January - until their harvest - between July and August - required that the animals be controlled when they were not grazing, so that they would not devastate the crops. Furthermore, the natural sheep breeds of the Iberian Peninsula, weaker and smaller than the current ones, tolerated the summer heat poorly, being kept during the day and taken to graze at night. The farrowing pen also accumulated animal manure, which was the fertilizer used by farmers to fertilize their fields.

Hygienic regulations for livestock breeding and the appearance of modern prefabricated buildings have taken away the practical usefulness of farrowing pens. For this reason, most of them are disappearing because their owners do not re-roof them. The Arab roof tiles, due to their artisanal nature, tend to break during frost, causing leaks, which eventually rot the roof beams until they collapse. Those that are preserved can still be visited in towns in the mountain ranges of the north of the province of Guadalajara, in the south of Aragon and in the south of Soria near Medinaceli.

• - Sheepfold.

• - Chozón Sabinero.

• - Majada.

• - Taina.

• - Tinada.

• - Corral.

• - https://www.youtube.com/watch?v=trpSVNPjSKQ.

The oldest reference to a farrowing pen dates back to a 17th-century donation document. In it, the King of Castile Alfonso VI cedes the village of Saviñán (today La Torresaviñán) to the bishop of Sigüenza and his descendants, making reference to a farrowing house, which in the original document, written in Latin, calls “ovetarium”, and which is located in La Serna del Obispo, in La Torresaviñán.[4]​.

However, it is likely that it was the Romans who introduced this construction to our peninsula, since they also ordered livestock and agricultural operations. The gabled clay tile roof, the interior structure and the rectangular floor plan are typical of Hispano-Roman architecture. The pre-Roman towns, on the contrary, built houses with a circular plan and the roof was made of arbors, without tiles. It can be assumed that the Hispano-Romans of the Visigoth period first, and the Hispano-Arabs later, continued using the Roman farrowing house, ceding their construction tradition to the Christian kingdoms through the space of coexistence that was the "extremadura" of the century, understanding as such all the lands that were south of the Duero River.

Located in a wilder natural environment than the current one, the farrowing farm allowed man to exploit livestock in rural areas without suffering the prey of wild animals such as bears, wolves and foxes. It also allowed cattle to be left unattended when they gave birth, and since the smell of the placenta attracted predators, the use of the birthing pen was essential. Similarly, the period between the emergence of cereals - around January - until their harvest - between July and August - required that the animals be controlled when they were not grazing, so that they would not devastate the crops. Furthermore, the natural sheep breeds of the Iberian Peninsula, weaker and smaller than the current ones, tolerated the summer heat poorly, being kept during the day and taken to graze at night. The farrowing pen also accumulated animal manure, which was the fertilizer used by farmers to fertilize their fields.

Hygienic regulations for livestock breeding and the appearance of modern prefabricated buildings have taken away the practical usefulness of farrowing pens. For this reason, most of them are disappearing because their owners do not re-roof them. The Arab roof tiles, due to their artisanal nature, tend to break during frost, causing leaks, which eventually rot the roof beams until they collapse. Those that are preserved can still be visited in towns in the mountain ranges of the north of the province of Guadalajara, in the south of Aragon and in the south of Soria near Medinaceli.

• - Sheepfold.

• - Chozón Sabinero.

• - Majada.

• - Taina.

• - Tinada.

• - Corral.

• - https://www.youtube.com/watch?v=trpSVNPjSKQ.