Effect of dietary β-carotene on the accumulation of β-carotene and vitamin A in plasma and tissues of gilts Florian J. Schweigert, Ingeborg Buchholz, Annette Schuhmacher and Jürgen Gropp Reprod. Nutr. Dev., 41 1 (2001) 47-55 DOI: 10.1051/rnd:2001111