Follicular wave emergence and fertility following estrogen based synchronization regimen in anestrus buffaloes (Bubalus bubalis)
The study was undertaken to study the follicular changes around the time of new wave emergence following estradiol-17ï¢ (E-17) + controlled internal drug release (CIDR) based synchronization in 30 anestrus buffaloes. The animals were divided in two Groups, viz. Group I and II. In Group I (n=20), o...
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Indian Council of Agricultural Research
2021-07-01
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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/113267 |
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| author | G R BHAT G S DHALIWAL S P S GHUMAN M HONPARKHE V K GANDOTRA |
| author_facet | G R BHAT G S DHALIWAL S P S GHUMAN M HONPARKHE V K GANDOTRA |
| author_sort | G R BHAT |
| collection | DOAJ |
| description |
The study was undertaken to study the follicular changes around the time of new wave emergence following estradiol-17ï¢ (E-17) + controlled internal drug release (CIDR) based synchronization in 30 anestrus buffaloes. The animals were divided in two Groups, viz. Group I and II. In Group I (n=20), on day 0 (beginning of experiment), buffaloes were administered CIDR device (1.38 g P4) and concurrently received 1.5 mg estradiol-17ï¢ in 1.5 ml canola oil (i. m.). On day 9, CIDR was removed and a prostaglandin (PG) 2 analogue (500 μg, i. m.) was administered. On day 11, buffaloes were administered gonadotropin releasing hormone (GnRH) analogue (20 μg, i.m.) and inseminated twice at 12 h and 24 h following GnRH injection. Group II (control, n=10) received the CIDR-based protocol except the administration of estradiol at the time of CIDR insert. Ovaries were examined for follicular wave emergence, ovulation of dominant follicles at estrus and subsequent conception at 45 days of insemination. The mean diameter of largest follicle was reduced from 8 mm (0th day) to 4 mm on the day of wave emergence (WE), i.e. day 4 in Group I but day 6 in control. The mean number of 4-5 mm follicle was 5.7 in Group I and 4.8 in control on the days of WE. Ovulation and conception rates achieved were 85 vs 60% and 47 vs 30% respectively. In conclusion the new wave emergence was induced earlier by estradiol-17ï¢ administered along with CIDR which ultimately resulted in more ovulation and conception rate in buffalo. Estrogen based protocols might be adopted to improve fertility in anestrum buffaloes.
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| first_indexed | 2024-04-10T07:50:59Z |
| format | Article |
| id | doaj.art-73ab764023134de0b34c54ff2655ee09 |
| institution | Directory Open Access Journal |
| issn | 0367-8318 2394-3327 |
| language | English |
| last_indexed | 2024-04-10T07:50:59Z |
| publishDate | 2021-07-01 |
| publisher | Indian Council of Agricultural Research |
| record_format | Article |
| series | Indian Journal of Animal Sciences |
| spelling | doaj.art-73ab764023134de0b34c54ff2655ee092023-02-23T10:16:28ZengIndian Council of Agricultural ResearchIndian Journal of Animal Sciences0367-83182394-33272021-07-0191110.56093/ijans.v91i1.113267Follicular wave emergence and fertility following estrogen based synchronization regimen in anestrus buffaloes (Bubalus bubalis)G R BHAT0G S DHALIWAL1S P S GHUMAN2M HONPARKHE3V K GANDOTRA4Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana, Punjab 141 004 IndiaGuru Angad Dev Veterinary and Animal Sciences University, Ludhiana, Punjab 141 004 IndiaGuru Angad Dev Veterinary and Animal Sciences University, Ludhiana, Punjab 141 004 IndiaGuru Angad Dev Veterinary and Animal Sciences University, Ludhiana, Punjab 141 004 IndiaGuru Angad Dev Veterinary and Animal Sciences University, Ludhiana, Punjab 141 004 India The study was undertaken to study the follicular changes around the time of new wave emergence following estradiol-17ï¢ (E-17) + controlled internal drug release (CIDR) based synchronization in 30 anestrus buffaloes. The animals were divided in two Groups, viz. Group I and II. In Group I (n=20), on day 0 (beginning of experiment), buffaloes were administered CIDR device (1.38 g P4) and concurrently received 1.5 mg estradiol-17ï¢ in 1.5 ml canola oil (i. m.). On day 9, CIDR was removed and a prostaglandin (PG) 2 analogue (500 μg, i. m.) was administered. On day 11, buffaloes were administered gonadotropin releasing hormone (GnRH) analogue (20 μg, i.m.) and inseminated twice at 12 h and 24 h following GnRH injection. Group II (control, n=10) received the CIDR-based protocol except the administration of estradiol at the time of CIDR insert. Ovaries were examined for follicular wave emergence, ovulation of dominant follicles at estrus and subsequent conception at 45 days of insemination. The mean diameter of largest follicle was reduced from 8 mm (0th day) to 4 mm on the day of wave emergence (WE), i.e. day 4 in Group I but day 6 in control. The mean number of 4-5 mm follicle was 5.7 in Group I and 4.8 in control on the days of WE. Ovulation and conception rates achieved were 85 vs 60% and 47 vs 30% respectively. In conclusion the new wave emergence was induced earlier by estradiol-17ï¢ administered along with CIDR which ultimately resulted in more ovulation and conception rate in buffalo. Estrogen based protocols might be adopted to improve fertility in anestrum buffaloes. https://epubs.icar.org.in/index.php/IJAnS/article/view/113267Guru Angad Dev Veterinary and Animal Sciences UniversityLudhianaPunjab 141 004 India |
| spellingShingle | G R BHAT G S DHALIWAL S P S GHUMAN M HONPARKHE V K GANDOTRA Follicular wave emergence and fertility following estrogen based synchronization regimen in anestrus buffaloes (Bubalus bubalis) Indian Journal of Animal Sciences Guru Angad Dev Veterinary and Animal Sciences University Ludhiana Punjab 141 004 India |
| title | Follicular wave emergence and fertility following estrogen based synchronization regimen in anestrus buffaloes (Bubalus bubalis) |
| title_full | Follicular wave emergence and fertility following estrogen based synchronization regimen in anestrus buffaloes (Bubalus bubalis) |
| title_fullStr | Follicular wave emergence and fertility following estrogen based synchronization regimen in anestrus buffaloes (Bubalus bubalis) |
| title_full_unstemmed | Follicular wave emergence and fertility following estrogen based synchronization regimen in anestrus buffaloes (Bubalus bubalis) |
| title_short | Follicular wave emergence and fertility following estrogen based synchronization regimen in anestrus buffaloes (Bubalus bubalis) |
| title_sort | follicular wave emergence and fertility following estrogen based synchronization regimen in anestrus buffaloes bubalus bubalis |
| topic | Guru Angad Dev Veterinary and Animal Sciences University Ludhiana Punjab 141 004 India |
| url | https://epubs.icar.org.in/index.php/IJAnS/article/view/113267 |
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