Análise de informações genealógicas de bovinos Gir e Nelore da Costa Rica

Ciencia Rural

article

Ruth Castro-Vásquez¹  Marilyn Vásquez-Loaiza²  Argerie Cruz-Méndez¹  Joel Domínguez-Viveros³  Jorge Camacho-Sandoval⁴  Alejandro Saborío-Montero⁵ 

[1] Instituto Nacional de Innovación y Transferencia en Tecnología Agropecuaria;Asociación de Criadores de Ganado Cebú de Costa Rica;Universidad Autónoma de Chihuahua;Corporación Ganadera;Universidad de Costa Rica

关键词: inbreeding;    generation interval;    effective size;    ancestors;    zebu cattle;   

DOI  :  10.1590/0103-8478cr20220236

学科分类：农业科学（综合）

来源: Universidade Federal de Santa Maria * Centro de Ciencias Rurais

【 摘 要 】

The objectives were to analyze the genealogical information of Gyr (GY) and Nelore (NL) cattle from Costa Rica. Analyzed: pedigree integrity (GY, 13272; NL, 18153); number of complete, maximum traced and equivalent complete generations; inbreeding (FI); generation interval (GI) through four selection routes; average additive genetic ratio (AGR); effective number of founders (fe); effective number of ancestors (fa); effective population size (Ne). The analysis was performed with the ENDOG software. The maximum proportion of unknown parents, grandparents, and great-grandparents was 18.6%, 39.9%, and 59.3%, respectively. The average FI for NL was 8.87% and 2.85% in GY. The average consanguineous population (%) and FI was 53.9 and 16.5% in NL, 28.9 and 9.9% in GY. The average and maximum values of AGR for NL were 3.5 and 12.8, 1.4 and 5.6 in GY. The fe and fa for NL were 65.0 and 38.0, in GY 145.7 and 59.0. The Ne indicated increases in FI in the range of 1 to 2% in GY, for NL greater than 2%, with a status of care to monitor the evolution of F and AGR and their possible implications in genetic improvement. The GI ranged from 6.3 to 7.9 years with a general average of 6.9 years. These results show a summary of the genetic and reproductive management those breeders have carried out.

【 授权许可】

Unknown