Tesis
Estudio de las Correlaciones entre Producción – Reproducción y Tipo de los Toros Holstein en Ecuador.
Fecha
2019-07-15Registro en:
Maldonado Arias, Diego Fabián. (2019). Estudio de las Correlaciones entre Producción – Reproducción y Tipo de los Toros Holstein en Ecuador. Escuela Superior Politécnica de Chimborazo. Riobamba.
Autor
Maldonado Arias, Diego Fabián
Resumen
The objective was to study the correlations between predicted transmission ability (PTA) of the Holstein Association of Ecuador bulls with genetic evaluation available in the country: Production and Reproduction. In the Chimborazo province , the correlations between predicted transmission ability of the Holstein Association of Ecuador bulls with genetic evaluation available in the country were studied: Production-Type-Reproduction; through the use of database of Holstein bulls available in the USA, which are commercialized in Ecuador; population (50 bulls), 25 bulls were selected, the data were analyzed by the Pearson method using SPSS version Statistic 19. Between productive and reproductive parameters, 56% of the characteristics do not correlate, so that they are independent. Concerning the correlation between productive parameters and type, it is indicated that 82.61% of the characteristics are independent. For the correlation between reproductive and standard parameters, 67.82% of the characteristics are independent; those progress directly is Rate of a conception of the bull (SRC) with Predicted transmission type Skill (PTAT); SCR with body composition index (BDI); SCR with rear udder height (RH). Regarding the correlation between productive and reproductive parameters, it can be indicated that 56% of the characteristics do not correlate, that is, they are independent. Those that progress directly represent 28% (they are correlated and 16% of the characteristics progress inversely.) It is important that the Ministry of Agriculture and Livestock (MAG), take into account that the results of the investigations carried out (transfer of technology), apply and be disseminated at the level of small, medium and large producers of dairy cattle in our country.