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Luteal blood flow measured by Doppler ultrasonography during the first three weeks after artificial insemination in pregnant and non-pregnant <i>Bos indicus</i> dairy cows
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- HASSAN Mubbashar
- Department of Theriogenology, Faculty of Veterinary Science, University of Veterinary and Animal Sciences, Lahore 54000, Pakistan Present: Clinic of Reproductive Medicine, Vetsuisse-Faculty, University of Zurich, Zurich CH-8057, Switzerland
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- ARSHAD Usman
- Department of Theriogenology, Faculty of Veterinary Science, University of Veterinary and Animal Sciences, Lahore 54000, Pakistan
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- BILAL Muhammad
- Department of Statistics and Computer Science, Faculty of Life Sciences and Business Management, University of Veterinary and Animal Sciences, Lahore 54000, Pakistan
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- SATTAR Abdul
- Department of Theriogenology, Faculty of Veterinary Science, University of Veterinary and Animal Sciences, Lahore 54000, Pakistan
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- AVAIS Muhammad
- Department of Clinical Medicine and Surgery, Faculty of Veterinary Science, University of Veterinary and Animal Sciences, Lahore 54000, Pakistan
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- BOLLWEIN Heinrich
- Clinic of Reproductive Medicine, Vetsuisse-Faculty, University of Zurich, Zurich CH-8057, Switzerland
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- AHMAD Nasim
- Department of Theriogenology, Faculty of Veterinary Science, University of Veterinary and Animal Sciences, Lahore 54000, Pakistan
Bibliographic Information
- Other Title
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- Luteal blood flow measured by Doppler ultrasonography during the first three weeks after artificial insemination in pregnant and non-pregnant Bos indicus dairy cows
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Description
<p> The objective of this study was to determine if there are differences in luteal size (LS), progesterone (P4), and luteal blood flow (LBF) between pregnant and non-pregnant Bos indicus dairy cows during the first three weeks after insemination, and whether these parameters are related to each other. Lactating cows (n = 13) of mixed parity with a body weight of 430 ± 18 kg (mean ± SD), showing regular estrous cycle were used in the study. All cows were artificially inseminated and were classified as pregnant (embryonic heartbeat on day 30; n = 8) or non-pregnant (inter-estrus interval 17 to 21 days, n = 5). In order to compare the LS and LBF after artificial insemination, B-mode and color Doppler ultrasonography of ovaries were performed on days 4, 5, 6, 7 (first week), 8, 10, 12, 14, (second week), and 16, 17, 18, 19, 20, 21 (third week) in pregnant and non-pregnant cows. Results revealed that the mean LBF was consistently higher (P < 0.05) during days 7 through 21 in pregnant cows than in non-pregnant cows. The mean LS was higher (P < 0.05) on days 6 and 7, and from day 17 onwards, and the mean concentration of P4 was higher (P < 0.05) on days 19, 20, and 21 in pregnant cows. In conclusion, LBF is a more sensitive parameter than LS and P4 for detection of differences in luteal function between pregnant and non-pregnant Bos indicus dairy cows during the first three weeks after AI.</p>
Journal
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- Journal of Reproduction and Development
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Journal of Reproduction and Development 65 (1), 29-36, 2019
The Society for Reproduction and Development
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Details 詳細情報について
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- CRID
- 1390282763098652032
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- NII Article ID
- 130007596653
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- NII Book ID
- AA10936678
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- ISSN
- 13484400
- 09168818
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- NDL BIB ID
- 029510857
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- PubMed
- 30393273
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- Text Lang
- en
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- Article Type
- journal article
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- Data Source
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- JaLC
- NDL Search
- Crossref
- PubMed
- CiNii Articles
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- Abstract License Flag
- Disallowed