Meeting the mineral needs of highly prolific sows.

摘要

This article discusses the mineral requirements, such as CA, P, Se, Fe, Cu and Zn, of sows and piglets during the different stages of pregnancy and lactation. The greatest requirement of minerals for piglet development is observed in the final stages of pregnancy and throughout lactation. It is also suggested that high-producing sows may be unable to attain their trace mineral requirements during the initial 21-day lactation period from feed alone. However, simply fortifying the diet with higher levels of minerals is not recommended as this may reduce reproductive performance. The levels of minerals needed by pregnant and lactating sows changes throughout the reproductive cycle and for that reason, correct phasing of mineral supplies is very important.