Proceeding of Veterinary and Animal Science Days 2016, 8th- 10th June, Milan, Italy HAF © 2013 Vol. III, No. 1s ISSN: 2283-3927 l Keywords Goat, Lipidic metabolism, Inflammation, Gene expression, Peripartum, Adipose tissue, Lipidic integration CORRESPONDING AUTHOR Alessandro Agazzi alessandro.agazzi@unimi.it JOURNAL HOME PAGE riviste.unimi.it/index.php/haf Transcriptional regulation of lipid metabolism and inflammation in transition dairy goats by fish oil and stearate. G. Farinaa, A. Agazzi*a, G. Invernizzia, A. Campagnolia, J.J. Loorb, G. Savoini1 aDipartimento di Scienze Veterinarie per la Salute, la Produzione Animale e la Sicurezza Alimentare, Università degli Studi di Milano, Milano, Italy bDepartment of Animal Sciences, UIUC, Illinois, USA. Abstract To better understand the interaction between saturated or unsaturated fatty acids and its effect on expression of genes involved in subcutaneous adipose tissue metabolism, 23 second parity alpine dairy goats were enrolled in the experiment and fed either a non fat-supplemented basal diet (C; n=8), the basal diet supplemented with stearic acid (ST; n=7) or the basal diet supplemented with fish oil (FO; n=8). 30g/head/d supplemental fatty acids during the dry period and 50g/head/d during lactation were delivered starting one week before parturition up to 21 days in milk. Subcutaneous adipose tissue samples were harvested at day -7, 7 and 21 relative to kidding and mRNA levels of genes involved in inflammation were measured via qPCR. Data were analyzed using the MIXED procedure of SAS. No significant effects for treatment were observed, however eight genes were significant for time. HP and SAA3 expression peaked at day 7 postpartum, to then return at prepartum level around 21 d relative to kidding, while IL8, IL10, and IL18 expression constantly increased along the transition period. Vice versa, expression of IL1β, IL6R, and RXRA decreased in response to kidding, with a subsequent increase at day 21. The obtained results led us to hypothesize that goats face a postponed lipomobilization after kidding, probably related to their reduced production. The next step will involve the analysis of miRNA related to immune cell infiltration, adipocyte inflammation and lipolysis and positive regulation of adipogenesis to better understand the complex network of lipid metabolism in periparturient goats. References Agazzi A., Cattaneo, D., Dell’Orto, V., Moroni, P., Bonizzi, L., Pasotto, D., and Savoini, G., 2004. Effect of administration of fish oil on aspects of cell- mediated immune response in periparturient dairy goats. Small Ruminant Research. 55, 77-83. Calder, P.C., and Grimble, R.F., 2002. Polyunsaturated fatty acids, inflammation and immunity. Europ. J. Clincal Nutr. 56, S14-S19. Invernizzi, G., Corbani, D., Caputo, J.M., Campagnoli, A., Pisani, L.F., Bronzo, V., Agazzi, A., Modina, S., and Savoini, G., 2012. Dietary fatty acids on subcutaneous adipose tissue modulation in transition dairy goats. Page 312 in Proc. XI International Conference on Goats, Gran Canaria, Spain. Mallard, B.A., Dehhers, J.C., Ireland, M.J., Leslie, K.E., Sharif, S., Lacey Vankampen, C., Wagter, L., and Wilkie, B.N., 1998. Alteration in immune responsiveness during the peripartum period and its ramification on dairy cow and calf health. Journal of Dairy Science. 81, 585–594. http://creativecommons.org/licenses/by-nc-nd/3.0/deed.en