TY  - JOUR 
T1  - Effect of the use of eCG on the pregnancy rate in dairy cows treated with a prolonged proestrus protocol in the Ecuadorian Amazon
JO  - Animal Reproduction
A1  - Ortega-Coello, Manuel Edelberto
A1  - Quinteros-Pozo, Orlando Roberto
A1  - Marini, Pablo Roberto
A1  - Bó, Gabriel Amílcar
SN  - 1984-3143
UL  - 10.1590/1984-3143-AR2025-0084
VL  - 23 
Y1  - 2026
PB  - Brasil 
ER  -