National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
Embryonic mortality (EM) is a major concern in the dairy industry across the world and it occurs due to loss of conceptus following fertilization until days 42-45 of pregnancy. The present study was carried out with the objective to detect EM in the crossbred cattle at the University Livestock Farm, Mannuthy, Kerala Veterinary and Animal Sciences University during the period from September 2017 to August 2019. Among the breedable animals inseminated at spontaneous oestrus, non-return animals (n=362) were selected for the study. Transrectal ultrasonography (TRUS) using a 7.5 MHz transducer was performed on days 28 and 45, respectively to diagnose pregnancy and to detect embryonic mortality if any. Out of 362 animals which exhibited non-return to oestrus, 73.76 per cent (n=267) were found positive for pregnancy on day 28 and out of these, 95.88 per cent animals (n=256) were having viable embryo with detectable heart beat on day 45.Thus, the incidence of EM in the current investigation was 4.12 per cent between days 28 and 45 post- service. In conclusion, use of ultrasonography to detect embryonic loss and pathological conditions, at the early stages of gestation helps to reduce the inter-calving interval, a key factor of successful dairying.
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