Ramiro Corujeira Valentim

Dr. Ramiro Corujeira Valentim is a faculty member at Instituto Politécnico de Bragança, focusing on reproductive biology and veterinary science in small ruminants. His career spans over three decades, with extensive work on artificial insemination, estrus synchronization, and breeding management in breeds like Serrana goats and Churra Galega Bragançana sheep. He has contributed to understanding how nutrition, hormonal treatments, and environmental factors influence reproductive efficiency.

• Education: PhD thesis (2004) on sexual seasonality in Ghurra Galega Bragançana rams; earlier thesis (1994) on puberty age in Churra Galega Bragançana lambs.
• Key Research Areas:
  • Reproductive control via hormonal and natural methods
  • Impact of vaginal lubrication and semen deposition on fertility
  • Lentivirus infection epidemiology in small ruminants
  • Milk quality assessment via somatic cell counts
  • Caprine and ovine mastitis diagnostics
  • Low-cost veterinary training tools

Recent Publications (2022–2024) emphasize optimizing fixed-time AI protocols, diagnosing small ruminant lentivirus, and enhancing udder health monitoring. His work also integrates ecography and seroprevalence studies in mountainous regions.

Notable Contributions:

• Developed practical manuals for veterinary nursing and paraveterinary training in Guinea-Bissau.
• Studied testicular growth and male effect on reproductive cycles.
• Collaborated on implantable microsystems for estrus detection in dairy cows.
• Investigated perinatal mortality and subclinical mastitis in Trás-os-Montes.