References
- Dematawewa, C.M.B., Pearson, R.E., Van Raden, P.M., 2007. Modeling Extended Lactations of Holsteins. J. Dairy Sci. 90:3924–3936.
- Haile-Mariam, M., Goddard, M., 2008. Genetic and phenotypic parameters of lactations longer than 305 days (extended lactations). Animal. 2:325–335.
- Van Raden, P.M., Dematawewa, C.M.B., Pearson, R.E., Tooker, M.E., 2006. Productive Life Including All Lactations and Longer Lactations with Diminishing Credits. J. Dairy Sci. 89:3213–3220.