Schothorst Feed Research (SFR) has developed a sow model that nutritionists can use to easily map the needs of pregnant and lactating sows. While SowModel currently works as an Excel calculation tool, SFR aims to make it available online in the near future.
During gestation, the sow needs energy and nutrients for maintenance, growth and development of its own body, for recovery from the previous lactation period, for the development of the uterus and udder and for the growth and development of the fetuses. During lactation, the needs depend strongly on the colostrum and milk production, and therefore on the litter size and the length of the suckling period. During the suckling period, the sow also mobilizes body reserves to maintain milk production.
The newly introduced sow model by Schothorst Feed Research (SFR) can be used by nutritionists to easily map the needs of pregnant and lactating sows. SFR points out that the model uses the factorial approach: based on litter number and condition development of the sow, feed composition and intake, litter size, weaning age, birth and weaning weight of the piglets, ambient temperature and whether or not straw is used, the model estimates the sow’s ultimate requirements for net energy, SID lysine, available calcium and digestible phosphorus.
CALCULATING DIFFERENT SCENARIOS
The important thing about the SowModel is that the user can calculate two scenarios side by side: “This ensures that a nutritionist gains insight into changes in the nutritional needs of the sow at a glance, for example if the duration of the lactation period is adjusted,” says Jan Fledderus, Product Manager at SFR. The needs of a first litter and an older sow can also be easily compared. The results are not only displayed in table form, but also graphically. The needs simulated with the SowModel can be directly compared with the applied feed amount and composition. In the table, the user can then see to what extent the feed used meets the needs of the sow on each day of pregnancy or lactation. This makes it possible to make targeted choices and to adjust the feeding schedule, feed composition, stable climate or management on the sow farm where necessary to improve the zootechnical results, but also animal health and welfare, according to the announcement.
SOON ALSO AVAILABLE AS AN ONLINE TOOL
“The SowModel currently works as an Excel calculation tool, with a choice of seven different languages. In the near future, an online tool will be available via the SFR website,” adds Fledderus. He already uses the model in his consultations with SFR customers who use the Advanced Feed Package. “The feed manufacturers who have already become acquainted with the SowModel are enthusiastic,” the Product Manager notes: “The model is flexible, easy to use and offers quick insights.”
For the development, SFR points out it used available manuals and scientific literature on the nutritional needs of sows in different life stages. The model was developed at the request of the animal feed industry and co-financed by SFR’s Advanced Feed Package customers.
