Genetic parameters of saturated and monounsaturated fatty acids estimated by test-day model in Walloon dairy cattle

peer reviewed ; The contents of saturated (SAT) and monounsaturated (MONO) fatty acids in milk vary through the lactation. The aim of this research was to estimate the genetic parameters for these groups of fatty acids in bovine milk using multi-trait random regression test-day models. The relationship between these fatty acids and the milk production traits was also studied as well as the effects of season and stage of lactation. The model included as fixed effects: herd x date of test, class of 15 days in milk, class of age. Random effects were herd x year of calving, permanent environmental... Mehr ...