Comprehensive study on dynamics of early embryonic development in Marwari mares
Horse is a seasonal breeder with reproductive activity being associated with long days, i.e. occurring in spring and early summer. Early equine pregnancy shares many features with that of more intensively assessed domestic animals species, but there are also characteristic differences. In mares, ear...
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| Format: | Article |
| Language: | English |
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Indian Council of Agricultural Research
2022-03-01
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| Series: | Indian Journal of Animal Sciences |
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| Online Access: | https://epubs.icar.org.in/index.php/IJAnS/article/view/122257 |
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| author | DEEPAK DEEPAK D JHAMB S S NIRWAN R JUNEJA J SINGH M GAUR T R TALLURI |
| author_facet | DEEPAK DEEPAK D JHAMB S S NIRWAN R JUNEJA J SINGH M GAUR T R TALLURI |
| author_sort | DEEPAK DEEPAK |
| collection | DOAJ |
| description | Horse is a seasonal breeder with reproductive activity being associated with long days, i.e. occurring in spring and early summer. Early equine pregnancy shares many features with that of more intensively assessed domestic animals species, but there are also characteristic differences. In mares, early diagnosis of pregnancy can be done due to the spherical shape. The ultrasonic visualization of conceptus is possible from day 9 of equine pregnancy. In spite of numerous, substantial advances in equine reproduction, many stages of embryonic and foetal morphological development are poorly understood, with no apparent single source of comprehensive information. Hence, in the present study we aimed at studying the dynamics of early embryonic developments in equines, particularly for Marwari breed of horses. The results from the current study revealed that, embryonic vesicles (EV) were first observed on 11th day, fixation occurred after 16.25±0.25 days of ovulation, EV lost spherical shape on 15.83±0.38 days, became oval on 17–18th days and irregular on 19–20th days. Heartbeat, detection of allantoic sac, start of foetal ascent, start of foetal descend and end of foetal descend were detected on 23.91±0.41, 23.58±0.35, 38.66±0.28, 40.66±0.33 and 47.33±0.28 days, respectively. In conclusion, early detection of embryonic vesicles and continuous changes observed in conceptus structure indicate positive pregnancy, viability of embryo and are much beneficial in preventing economical loss of equine owner and stable farm. |
| first_indexed | 2024-04-10T16:35:47Z |
| format | Article |
| id | doaj.art-8a183024630f4a8db6640275d42033f1 |
| institution | Directory Open Access Journal |
| issn | 0367-8318 2394-3327 |
| language | English |
| last_indexed | 2024-04-10T16:35:47Z |
| publishDate | 2022-03-01 |
| publisher | Indian Council of Agricultural Research |
| record_format | Article |
| series | Indian Journal of Animal Sciences |
| spelling | doaj.art-8a183024630f4a8db6640275d42033f12023-02-08T11:27:14ZengIndian Council of Agricultural ResearchIndian Journal of Animal Sciences0367-83182394-33272022-03-0192310.56093/ijans.v92i3.122257Comprehensive study on dynamics of early embryonic development in Marwari maresDEEPAK DEEPAK0D JHAMB1S S NIRWAN2R JUNEJA3J SINGH4M GAUR5T R TALLURI6College of Veterinary and Animal Science, Navania, Vallabhnagar, Udaipur, Rajasthan 313 601 IndiaCollege of Veterinary and Animal Science, Navania, Vallabhnagar, Udaipur, Rajasthan 313 601 IndiaCollege of Veterinary and Animal Science, Navania, Vallabhnagar, Udaipur, Rajasthan 313 601 IndiaCollege of Veterinary and Animal Science, Navania, Vallabhnagar, Udaipur, Rajasthan 313 601 IndiaCollege of Veterinary and Animal Science, Navania, Vallabhnagar, Udaipur, Rajasthan 313 601 IndiaCollege of Veterinary and Animal Science, Navania, Vallabhnagar, Udaipur, Rajasthan 313 601 IndiaCollege of Veterinary and Animal Science, Navania, Vallabhnagar, Udaipur, Rajasthan 313 601 IndiaHorse is a seasonal breeder with reproductive activity being associated with long days, i.e. occurring in spring and early summer. Early equine pregnancy shares many features with that of more intensively assessed domestic animals species, but there are also characteristic differences. In mares, early diagnosis of pregnancy can be done due to the spherical shape. The ultrasonic visualization of conceptus is possible from day 9 of equine pregnancy. In spite of numerous, substantial advances in equine reproduction, many stages of embryonic and foetal morphological development are poorly understood, with no apparent single source of comprehensive information. Hence, in the present study we aimed at studying the dynamics of early embryonic developments in equines, particularly for Marwari breed of horses. The results from the current study revealed that, embryonic vesicles (EV) were first observed on 11th day, fixation occurred after 16.25±0.25 days of ovulation, EV lost spherical shape on 15.83±0.38 days, became oval on 17–18th days and irregular on 19–20th days. Heartbeat, detection of allantoic sac, start of foetal ascent, start of foetal descend and end of foetal descend were detected on 23.91±0.41, 23.58±0.35, 38.66±0.28, 40.66±0.33 and 47.33±0.28 days, respectively. In conclusion, early detection of embryonic vesicles and continuous changes observed in conceptus structure indicate positive pregnancy, viability of embryo and are much beneficial in preventing economical loss of equine owner and stable farm.https://epubs.icar.org.in/index.php/IJAnS/article/view/122257Allantoic sacConceptusEmbryonic vesicleMarwari maresUltrasonography |
| spellingShingle | DEEPAK DEEPAK D JHAMB S S NIRWAN R JUNEJA J SINGH M GAUR T R TALLURI Comprehensive study on dynamics of early embryonic development in Marwari mares Indian Journal of Animal Sciences Allantoic sac Conceptus Embryonic vesicle Marwari mares Ultrasonography |
| title | Comprehensive study on dynamics of early embryonic development in Marwari mares |
| title_full | Comprehensive study on dynamics of early embryonic development in Marwari mares |
| title_fullStr | Comprehensive study on dynamics of early embryonic development in Marwari mares |
| title_full_unstemmed | Comprehensive study on dynamics of early embryonic development in Marwari mares |
| title_short | Comprehensive study on dynamics of early embryonic development in Marwari mares |
| title_sort | comprehensive study on dynamics of early embryonic development in marwari mares |
| topic | Allantoic sac Conceptus Embryonic vesicle Marwari mares Ultrasonography |
| url | https://epubs.icar.org.in/index.php/IJAnS/article/view/122257 |
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