Portal-drained viscera (PDV) and hepatic balance of energy metabolites in high-yielding cows. Effects of a fat supplement on PDV rates Y. Chilliard, JM Vacelet, D. Durand and D. BauchartReprod. Nutr. Dev., 32 5-6 (1992) 501DOI: https://doi.org/10.1051/rnd:19920531