Miguel Cucho
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Research Subjects
Miguel Cucho has a total of 5 co-authors. Here are the top co-authors by number of shared publications:
- Alexei Santiani
Universidad Nacional Mayor de San Marcos, Facultad de Medicina Veterinaria, Laboratorio de Reproducción Animal, Lima, Perú
1 shared publication - Javier Juárez
Laboratory of Animal Reproduction, Faculty of Veterinary Medicine, Universidad Nacional Mayor de San Marcos (UNMSM), 2800 Circunvalación Av., San Borja, Lima 15021, Peru
1 shared publication - Josselyn Delgado
Laboratory of Animal Reproduction, Faculty of Veterinary Medicine, Universidad Nacional Mayor de San Marcos (UNMSM), 2800 Circunvalación Av., San Borja, Lima 15021, Peru
1 shared publication - Luis Ruiz-García
Laboratory of Animal Reproduction, Faculty of Veterinary Medicine, Universidad Nacional Mayor de San Marcos (UNMSM), 2800 Circunvalación Av., San Borja, Lima, Peru
1 shared publication - Shirley Evangelista-Vargas
Grupo de Investigación en Biología y Biotecnología Reproductiva Animal, Universidad Científica del Sur, Lima 15067, Peru
1 shared publication
Latest Publications
- Open Access
Field-Compatible Cytometric Assessment of Epididymal Alpaca Sperm Viability and Acrosomal Integrity Using Fluorochrome
In remote alpaca breeding regions, access to advanced sperm analysis laboratories is limited. This study validates a practical cytometric method for evaluating sperm viability and acrosomal integrity in epididymal alpaca sperm using early fluorochrome staining, formaldehyde fixation, and intermediate storage. Thirty-two testes were transported at 5 °C, and spermatozoa were collected from the cauda epididymis. After morphometric screening, 26 samples were included. Aliquots were stained with Zombie Green (viability) and FITC–PSA (acrosomal integrity), at time zero. Each aliquot was divided for cytometric analysis at T0 (immediately), T24 (24 h after formaldehyde fixation) and T1w (1 week post-fixation). Fixed samples showed higher viability and acrosomal integrity values (T24: 70.75%, 97.24%; T1w: 71.80%, 97.21%) than T0 (67.63%, 95.89%). This may reflect fluorescence alterations associated with fixation. Strong correlations and Bland–Altman analysis confirmed consistency across time points. This method enables accurate sperm quality evaluation up to one week after collection, offering a useful tool for reproductive monitoring in field conditions without immediate analysis. Further research on ejaculated semen and field protocols is recommended.
Open AccessField-Compatible Cytometric Assessment of Epididymal Alpaca Sperm Viability and Acrosomal Integrity Using Fluorochrome
In remote alpaca breeding regions, access to advanced sperm analysis laboratories is limited. This study validates a practical cytometric method for evaluating sperm viability and acrosomal integrity in epididymal alpaca sperm using early fluorochrome staining, formaldehyde fixation, and intermediate storage. Thirty-two testes were transported at 5 °C, and spermatozoa were collected from the cauda epididymis. After morphometric screening, 26 samples were included. Aliquots were stained with Zombie Green (viability) and FITC–PSA (acrosomal integrity), at time zero. Each aliquot was divided for cytometric analysis at T0 (immediately), T24 (24 h after formaldehyde fixation) and T1w (1 week post-fixation). Fixed samples showed higher viability and acrosomal integrity values (T24: 70.75%, 97.24%; T1w: 71.80%, 97.21%) than T0 (67.63%, 95.89%). This may reflect fluorescence alterations associated with fixation. Strong correlations and Bland–Altman analysis confirmed consistency across time points. This method enables accurate sperm quality evaluation up to one week after collection, offering a useful tool for reproductive monitoring in field conditions without immediate analysis. Further research on ejaculated semen and field protocols is recommended.