Dean BoydR. Dean Boyd PhD is director of technology for The Hanor Company, which controls production from about 100 000 sows in the USA and is a partner in new American pork processor Triumph Foods.From the AuthorHomeSplit-herd feeding helps the senior sowLitter size has been improved by applying different feeding strategies for young and mature sows so that the supply of micro-nutrients is equalised across parities.HomeSow mineral supplies decline with ageUnless feeding in pregnancy is adjusted according to age, a widening gap will appear between the sow's intake of micro-nutrients and her increasing requirements for body maintenance and reproduction.Page 1 of 1