Volume 8, Issue 1, June 2020, Page: 1-7
Early and Late Embryonic Loss of Smallholder Synchronized Dairy Cows Within Ethiopia
Bainesagn Worku, Ethiopian Institute of Agricultural Research Center, Holeta, Ethiopia
Million Tadesse, Ethiopian Institute of Agricultural Research Center, Holeta, Ethiopia
Azage Tegegne, International Livestock Research Institute (ILRI), Addis Ababa, Ethiopia
Received: Oct. 19, 2019;       Accepted: Nov. 26, 2019;       Published: Apr. 7, 2020
DOI: 10.11648/j.cb.20200801.11      View  284      Downloads  78
Abstract
This study was carried out on 53 cows selected from smallholder dairy farmers in the Ejerie, Adea Berga and Metarobi western Shoa of Oromia in Ethiopia. All of the cows were investigated in October and November, 2015 for their cyclicity, pregnancy and mainly for early embryonic mortality determination. Milk samples were collected from the 53 of synchronized lactating cows involved in the estrus synchronization programme at the time of AI (day 0). Out of lactating cows, 33 exhibited true heat but due heat detection error, only 26 lactating cows were inseminated in day AI (Artificial Insemination). After it was confirmed that 20 lactating cows were pregnant, then they were continued for further progesterone profiling starting from day 18 to 45 day of post AI at interval of 3 days for determination of early embryonic loss based on progesterone concentration. The milk sample was analyzed by Hormonost Farmer Test. Results of the study indicated that about 60% of lactating cows maintain pregnancy until 45-day post AI whereas 15%, 15% and 10% of early pregnant lactating cow’s loss their embryo at 21st to 24th days, 27th to 30th days and 33rd day of post AI, respectively. The average progesterone concentration for pregnant cows was 24.46 ng/ml at day 21 to day 45 post AI. Based on finding of this result monitoring and evaluating reproductive traits with progesterone profiling is recommended to improve the fertility of dairy cattle. Finally, embryonic loss detection may serve as a basis for improvement of fertility of dairy cows mean while it will help for designing appropriate breeding management of dairy cattle.
Keywords
Embryonic Mortality, Milk Progesterone, Progesterone Profiling
To cite this article
Bainesagn Worku, Million Tadesse, Azage Tegegne, Early and Late Embryonic Loss of Smallholder Synchronized Dairy Cows Within Ethiopia, Cell Biology. Vol. 8, No. 1, 2020, pp. 1-7. doi: 10.11648/j.cb.20200801.11
Copyright
Copyright © 2020 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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