Florent and Matthieu Liévin, a farming family in Mentque-Nortbécourt, Pas-de-Calais, have made a significant shift from dairy cows to goat farming. In 2020, their farm had about fifty dairy cows, but by June 2023, the family decided to stop raising cows. The last of the cows left the farm a few weeks later. Florent Liévin, 59, sold the cows and, on July 4, purchased 120 full-grown kid goats, mostly white ones. However, some of these goats were not pregnant as expected, so the farmers added 50 Alpine goats to the herd. Today, the farm has around 500 goats, and their milk production is comparable to that of the former cows, with each goat producing about three liters of milk. To house the new herd, the Liévin family built a large tunnel-like structure called a Filclair building, measuring 25.6 by 50 meters. Construction took place between 2021 and 2022. The building is insulated with 20 centimeters of glass wool between two tarps, which helps maintain a comfortable environment during hot weather, keeping indoor temperatures below 27-28 °C even during heatwaves. The ventilation system is largely automated, with side shutters and two roof openings controlled by a weather station that closes the openings if wind exceeds 30 km/h. Windbreak nets are also used to keep the environment dry and protect the building’s facades. The family plans to install air circulators in the future. The feeding system is designed to reduce the time spent on daily tasks. Goats receive three different forages each day: 1 to 1.5 kilograms of ryegrass and clover hay in the morning, about 1 kilogram of ensiled alfalfa around 9 o'clock, and 1 to 1.5 kilograms of regrowth in the evening. Straw is available as needed. Feeding in the morning takes about 15 minutes. Square bale forages are distributed in the central corridor using a cart. Concentrate feed is automatically distributed five times a day using an Albouy rail-based device. The farm uses a Delaval milking room with 2x30 positions and automatically tilting milking arms. Milking 500 goats takes between 1 hour 30 minutes and 1 hour 45 minutes with two people. Four border collies assist in managing the goats. One dog retrieves goats from the back of the building and pushes them toward the waiting area, while another helps speed up the milking process. Once the animals and dogs are used to this system, it saves time. The herd is managed with two kidding periods per year, in March-April and August, to spread out milk production. Goats are not dried off due to past mastitis issues, and full-grown goats are milked until three weeks before the expected kidding date, after which the milk is discarded. First-time mothers give birth at the age of two and a half years. The farm works to eliminate CAEV, a disease affecting goats, by removing kid goats immediately after birth and feeding them reconstituted colostrum sachets. The proportion of disease-free animals has increased from about 70% to 85% in four years. The farm delivers milk to the Prospérité fermière cooperative on behalf of Agrial, switching in January 2026 from organic to conventional collection. This change results in a loss of 180 euros per thousand liters but saves more than 240 euros per ton of feed. Organic farming required a bedding area density of 2 square meters per goat, but the herd has decreased to 1.8 square meters per goat. The family aims to increase the number of goats, moving from 480,000 liters with 500 goats to over 600,000 liters. They have started constructing a tunnel building for kid goats, with an investment of 80,000 euros. Florent also breeds 700 Ile-de-France sheep, selling lambs to regional butchers. While tests with goat meat in sausages and skewers have not attracted local consumers, a new opportunity is emerging with the cooperative of the North-East shepherds, which is starting a collection of kids and goats for reform in the Hauts-de-France.