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Ultrasonographic studies on incidence of embryonic mortality at an organized cattle farm

KrishiKosh

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Title Ultrasonographic studies on incidence of embryonic mortality at an organized cattle farm
 
Creator Pinki Rani
 
Contributor Chandolia, R. K
 
Subject null
 
Description Ultrasonographic studies on incidence of
embryonic mortality at an organized
cattle farm
The present study was carried out with the objective to detect embryonic mortality in a
total of 142 cows inseminated at spontaneous estrus. The ultrasonographic scanning with transrectal
probe using frequency of 7.0 MHz was carried out on day 28 to confirm pregnancy and reexamination
on day 45 to assess the incidence of embryonic mortality under farm conditions. Out
of 53 animals which exhibited non-return to estrus, 51 animals were having viable embryo with
heart beat on day 45 post-insemination. Thus, incidence of embryonic mortality in the current
investigation recorded was 3.77% (2/53). The embryonic heart beat on day 28 and 45 was
recorded to be 177.94±2.16 and 190.28±2.77 beats per minute. The cytobrush sampling was also
carried out on day 45 in two animals that suffered from embryonic mortality to rule out the
specific or non-specific infectious cause of embryonic mortality, if any and no microbial cause of
embryonic mortality was observed. Also, THE plasma progesterone concentrations were
significantly higher in pregnant cows at all days (Day 15, 28 and 45) as compared to the two
cows with embryonic mortality. The plasma progesterone concentrations in pregnant cows
increased significantly (p < 0.05) from 1.78±0.05 (Day 15) to 3.23±0.04 (Day 45). The plasma
progesterone concentrations in cows with embryonic mortality increased remarkably from
0.75±0.05 (Day 15) to 1.35±0.15 (Day 28). However, after Day 28 it decreased drastically to
0.70±0.10 on Day 45.
 
Date 2018-10-18T10:49:47Z
2018-10-18T10:49:47Z
2018
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/5810081741
 
Language en
 
Format application/pdf
 
Publisher LUVAS