Khade, N. B.; Patel, D. M.; Naikoo, Mehrajuddin
July 2011
Indian Journal of Field Veterinarians;2011, Vol. 7 Issue 1, p43
Academic Journal
This study was carried out on. 18 pubertal anestrus Gir heifers of a dairy farm after induction! synchronization of estrus using different hormone protocols, followed by fixed time Al. The primary objectives were to detect early pregnancy and early embryonic mortality on day 26 and 40 post-Al using a real-time B-mode ultrasound scanner equipped with 5 MHz linear array transducer. Ultrasound scanning on day 26 post-Al revealed the visualization of embryonic vesicle around the conceptus. The embryo proper was observed in seven out of 11 animals (63.64%) on day 26 and all conceived animals (100%) on day 40 post-Al. No early embryonic/fetal death was noticed during the study. The overall diagnostic accuracy of the technique for early pregnancy diagnosis was recorded as 94.44% and 100% on day 26 and day 40, respectively. Plasma progesterone concentrations ranged from 3.10 - 5.26 ng/ml with an average of 4.04 ± 0.29 ng/ml in pregnant animals and 0.56 - 1.01 ng/ml with an average of 0.78 ± 0.06 ng/ml in non-pregnant animals on day 20 post-Al. In conclusion, ultrasound scanning on day 26 is useful in detection of early pregnancy, early non-pregnancy and early embryonic mortality in heifers.


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