Seri Koonjaenak
Kasetsart University
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Publication
Featured researches published by Seri Koonjaenak.
Italian Journal of Animal Science | 2007
Seri Koonjaenak; Heriberto Rodriguez-Martinez
Abstract Characteristic of Thai swamp buffalo bulls semen used for artificial insemination (AI) in Thailand, aspects relevance in freezing and thawing of semen are review. Semen and sperm characteristics were evaluated included sperm count, motility (assessed subjectively and by CASA), morphology (using phase-contrast light microscopy and SEM), plasma membrane integrity (PMI) (using a hypo-osmotic swelling test [HOST]) and SYBR-14/propidium iodide [PI]), plasma membrane stability (PMS) (using Annexin-V/PI) and deoxyribonucleic acid (DNA) integrity (using SCSA and flow cytometry [FCM]). The average ejaculate volume was about 3.0–4.0 mL, with good viability (PMI measured by the HOST) and motility (<65% and <70%, respectively). Sperm concentration ranged from 1.1 to 1.2 billion/mL, being also affected by bull age. Whereas semen quality (including sperm output, pH and initial sperm motility) did not differ between the seasons. Few spermatozoa (>15%/ ejaculate) had abnormal morphology with abnormalities resembling those in other bovidae. In FT semen, PMI (using SYBR-14/PI) and PMS were highest in winter. Across seasons, ~50% of post-thaw spermatozoa depicted linear motility, a proportion that decreased to ~35% during incubation (38oC for 60 minutes), without marking any seasonal difference. The sperm DNA was hardly damaged (with <3% fragmentation, expressed as DNA fragmentation index [DFI]), among seasons.
Theriogenology | 2007
Seri Koonjaenak; P. Pongpeng; S. Wirojwuthikul; A. Johannisson; Annop Kunavongkrit; Heriberto Rodriguez-Martinez
Asian Journal of Andrology | 2007
Seri Koonjaenak; Vichai Chanatinart; Suneerat Aiumlamai; Tanu Pinyopumimintr; Heriberto Rodriguez-Martinez
Journal of Veterinary Medicine Series A-physiology Pathology Clinical Medicine | 2007
Seri Koonjaenak; A. Johannisson; P. Pongpeng; S. Wirojwuthikul; Annop Kunavongkrit; Heriberto Rodriguez-Martinez
Journal of Veterinary Medicine Series A-physiology Pathology Clinical Medicine | 2007
Seri Koonjaenak; V. Chanatinart; Hans Ekwall; Heriberto Rodriguez-Martinez
Kasetsart Journal. Natural Sciences | 2010
Atthaporn Roongsitthichai; Seri Koonjaenak; Padet Tummaruk
Comparative Haematology International | 2011
Atthaporn Roongsitthichai; Junpen Suwimonteerabutr; Kampon Kaeoket; Seri Koonjaenak; Padet Tummaruk
Thai Journal of Veterinary Medicine | 2010
Chanyuth Tretipskul; K. Buranaamnuay; Seri Koonjaenak; Padet Tummaruk; Mongkol Techakumphu
Archive | 2011
Atthaporn Roongsitthichai; Seri Koonjaenak; Padet Tummaruk
Warasan Sattawaphaet | 2002
Dollada Srisai; Sahathep Juntaravimol; Pakawadee Pongkete; Seri Koonjaenak; Apinun Suprasert