Optimization of sex ratio in an offspring selection plan for milk production traits of rams from Palas Milk Line.

The aim of this paper is the optimization of sex ratio in an offspring selection plan of rams, according to Robertson and Rendell model for bovines (1951), which will be propose for implementation in Palas Milk Line for genetic increase of milk production traits. The method used in this paper work is modeling, which exist in the most animal breeding scientifically papers. After the simulations, we observed that the most convenient variant was that which prefigure offspring testing in nucleus of 8 rams and a weight of two groups by 45% and 55% respectively.