M. Koivula, I. Strandén and E. A. Mäntysaari in Finnish minks Direct and maternal genetic effects on first litter size, maturation age, and animal size doi: 10.2527/jas.2008-1594 originally published online Jun 19, 2009; 2009.87:3083-3088. J Anim Sci http://jas.fass.org/cgi/content/full/87/10/3083 the World Wide Web at: The online version of this article, along with updated information and services, is located on www.asas.org at MTT Agrifood Research Finland on April 12, 2010. jas.fass.org Downloaded from