QUALITATIVE AND QUANTITATIVE ANALYSES OF LUTEAL VASCULARITY DURING FIRST TRIMESTER OF PREGNANCY IN CROSSBRED COWS
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Authors
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Satheshkumar
Professor and Head, Department of Veterinary Gynaecology and Obstetrics, Veterinary College and Research Institute, Orathanadu, TANUVAS
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Raja S
Assistant Professor, Veterinary Clinical Complex, Veterinary College and Research Institute, Tamil Nadu Veterinary and Animal Sciences University, Orathanadu- 614 625, Thanjavur, Tamil Nadu, India
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Prabaharan
Assistant Professor, Veterinary Clinical Complex, Veterinary College and Research Institute, Tamil Nadu Veterinary and Animal Sciences University, Orathanadu- 614 625, Thanjavur, Tamil Nadu, India
Keywords:
Corpus Luteum, Crossbred Cows, Doppler Study, Early Pregnancy, Vascular PerfusionAbstract
The objective of the study was to analyze the qualitative and quantitative characteristics of luteal blood flow during the first trimester of pregnancy in crossbred cows. Sixty pregnant animals were ultrasonographically investigated during three stages of gestation viz., Stage I: 25 – 35 days; Stage II: 45 – 60 days and Stage III: 75 – 90 days. The intensity of luteal blood flow was assessed and quantitative parameters were recorded. Very high intensity of luteal vascularity was found in stage I indicative of active neo-vascularization. The values of Doppler indices were reduced in stage II when compared to stage I, indicating a lesser resistance and free flow of blood as the pregnancy advanced. Progressive increase in vascularity could be attributed to the increasing demand of the CL to meet out the endocrine activity and maintenance of pregnancy.
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