Kass, Marko; Ariko, Tiia; Samarütel, Jaak; Ling, Katri; Jaakson, Hanno; Kaart, Tanel; Arney, David; Kärt, Olav; Ots, Meelis (2013). Long-term oral drenching of crude glycerol to primiparous dairy cows in early lactation. Animal Feed Science and Technology, 184, 58−66.10.1016/j.anifeedsci.2013.06.004.
Ots, Meelis; Jõudu, Ivi; Kaldmäe, Helgi; Kärt, Olav (2015). Proteiinisöödad lüpsilehmade söödaratsioonis. Terve loom ja tervislik toit: Terve loom ja tervislik toit 2015, Tartu. Toim. M.Kass. 52−57.
Ots, Meelis; Kärt, Olav (2015). Lehmade söötmise korraldamisest robotlüpsiga farmides. Terve loom ja tervislik toit: Terve loom ja tervislik toit 2015, Tartu 04.-05. märts 2015. Toim. M. Kass. Tartu, 32−36.
Olt, Andres; Kaldmäe, Helgi; Kärt, Olav; Ots, Meelis (2015). Comparison of maize silage from varieties cultivated in northern regions. Proceedings of the XVII International Silage Conference and IV International Symposium on Forage Quality and Conservation: XVII International Silage Conference and IV International Symposium on Forage Quality and Conservation, Piracicaba, São Paulo, Brazil, July 1-3, 2015. Ed. J. L. P. Daniel, G. Morais, D. Junges, L. G. Nussio. Piracicaba, São Paulo, Brazil: University of São Paulo, 268−269.
Ariko, Tiia; Kass, Marko; Henno, Merike; Fievez, Veerle; Kärt, Olav; Kaart, Tanel; Ots, Meelis (2015). The effect of replacing barley with glycerol in the diet of dairy cows on rumen parameters and milk fatty acid profile. Animal Feed Science and Technology, 209, 69−78.10.1016/j.anifeedsci.2015.08.004.