R. Popa


OPTIMIZATION OF SEX RATIO IN AN OFFSPRING SELECTION PLAN FOR MILK PRODUCTION TRAITS OF RAMS FROM PALAS MILK LINE

R. Popa, H. Grosu, Dana Popa, M. Maftei, Livia Vidu, Georgeta Diniţă, Nicoleta Işfan, Carmen Nicolae

Abstract
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.

Key words: offspring selection plan, optimization


OPTIMIZAREA RAPORTULUI DE SEXE ĪNTR-UN PLAN DE SELECŢIE PE DESCENDENŢI A BERBECILOR PENTRU CARACTERELE PRODUCŢIEI DE LAPTE ĪN LINIA DE LAPTE PALAS

R. Popa, H. Grosu, Dana Popa, M. Maftei, Livia Vidu, Georgeta Diniţă, Nicoleta Işfan, Carmen Nicolae

Rezumat
Scopul lucrarii propuse consta īn optimizarea raportului de sexe īntr-un plan de selectie pe descendenti, dupa modelul celui elaborat de Robertson si Rendell la taurine (1951), propus a fi aplicat pentru ameliorarea caracterelor asociate cu productia de lapte īn Linia de Lapte Palas. Metoda de lucru utilizata este cea care se regaseste īn majoritatea lucrarilor de ameliorare, respectiv modelarea. Īn conditiile īn care īn populatia analizata nu se practica īnsamāntari artificiale, se recomanda a fi aplicata varianta care presupune testarea pe descendenti īn nucleu a 8 berbeci, īntr-o populatie activa de 400 de femele si o pondere a celor doua grupe de 45% Elita si 55% Testare.

Cuvinte cheie: plan de selectie pe descendenti, optimizare