Mineral nutrition is considered a key factor in farm animal as it conditions health and production. Iron and zinc are the most abundant trace elements in the organism. High-producing sow lines are exposed to very high nutrient and micromineral requirements during pregnancy and lactation. In this study we hypothesized that sows may suffer a severe depletion of body mineral reserves that might compromise their reproductive performance and longetivity, and the likely mineral transfer to the fetus during pregnancy and piglets during lactation. The objective of this study was to determine if the age of the sow compromises the transfer of microminerals (iron, copper and zinc) to its piglets through colostrum and milk. Colostrum and milk samples were collected from sows of different parity numbers in a commercial farm. Hair samples from their piglets were also collected to determine their Zn status at the end of lactation. Our results did not show any decrease on the Fe, Cu or Zn concentration in colostrum and milk or on the Zn content in piglet’s hair as age of the sows increased. Thus age of the sow does not reduce the ability to transfer microminerals to their piglets during the lactation period.
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