Reproductive responses of dairy cows with ovarian cysts to simultaneous human chorionic gonadotropin or gonadotropin-releasing hormone and cloprostenol compared to gonadotropin-releasing hormone alone treatment
Aim: Bovine ovarian cysts are a common cause of economic loss in modern dairy herds. The objective of the present study was to evaluate the reproductive responses to three protocols using hCG, GnRH and cloprostenol when the definite diagnosis of the type of ovarian cyst is/is not possible in dairy c...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Veterinary World
2015-05-01
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| Series: | Veterinary World |
| Subjects: | |
| Online Access: | http://www.veterinaryworld.org/Vol.8/May-2015/15.pdf |
| _version_ | 1818985294194540544 |
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| author | T. Taktaz M. Kafi Adel Mokhtari M. Heidari |
| author_facet | T. Taktaz M. Kafi Adel Mokhtari M. Heidari |
| author_sort | T. Taktaz |
| collection | DOAJ |
| description | Aim: Bovine ovarian cysts are a common cause of economic loss in modern dairy herds. The objective of the present study was to evaluate the reproductive responses to three protocols using hCG, GnRH and cloprostenol when the definite diagnosis of the type of ovarian cyst is/is not possible in dairy cows.
Materials and Methods: A total of 144 lactating dairy cows with ovarian cysts were divided into three groups. At diagnosis (Day 0), cows in Group 1 (the conventional method, n=47) were injected with 0.02 mg of a GnRH analogue i.m. (Buserelin); cows in Group 2 (n=47) were intramuscularly treated with 0.02 mg Buserelin plus 500 μg cloprostenol; and cows in Group 3 (n=50) were intramuscularly treated with 1500 IU hCG plus 500 μg cloprostenol. All cows received 500 μg cloprostenol intramuscularly on Day 10.
Results: No statistically significant differences were found in the recovery time, interval to conception, conception rate at first AI, and pregnancy rates by Days 70 and 100 after treatment among the three groups.
Conclusions: Simultaneous treatment of ovarian cysts with hCG or GnRH and cloprostenol appeared to have no advantage over the conventional method, GnRH alone, in dairy cows. Furthermore, hCG and GnRH have an equal therapeutic effect in cows with ovarian cysts. |
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| id | doaj.art-5fd5b1594a584a9f809661a8dbe1baa7 |
| institution | Directory Open Access Journal |
| issn | 0972-8988 2231-0916 |
| language | English |
| last_indexed | 2024-12-20T18:32:36Z |
| publishDate | 2015-05-01 |
| publisher | Veterinary World |
| record_format | Article |
| series | Veterinary World |
| spelling | doaj.art-5fd5b1594a584a9f809661a8dbe1baa72022-12-21T19:30:00ZengVeterinary WorldVeterinary World0972-89882231-09162015-05-018564064410.14202/vetworld.2015.640-644Reproductive responses of dairy cows with ovarian cysts to simultaneous human chorionic gonadotropin or gonadotropin-releasing hormone and cloprostenol compared to gonadotropin-releasing hormone alone treatment T. Taktaz0M. Kafi1Adel Mokhtari2M. Heidari3Department of Animal Clinical Science, Shahrekord Branch, Islamic Azad University, Shahrekord, Iran; Taghi_taktaz@yahoo.comDepartment of Animal Reproduction, Faculty of Veterinary Medicine, Shiraz University, Shiraz, Iran; Kafi@shirazu.ac.irDepartment of Animal Reproduction, Faculty of Veterinary Medicine, Shiraz University, Shiraz, Iran; adelmkh2008@yahoo.comDepartment of Animal Clinical Science, Shahrekord Branch, Islamic Azad University, Shahrekord, Iran; milad391@yahoo.comAim: Bovine ovarian cysts are a common cause of economic loss in modern dairy herds. The objective of the present study was to evaluate the reproductive responses to three protocols using hCG, GnRH and cloprostenol when the definite diagnosis of the type of ovarian cyst is/is not possible in dairy cows. Materials and Methods: A total of 144 lactating dairy cows with ovarian cysts were divided into three groups. At diagnosis (Day 0), cows in Group 1 (the conventional method, n=47) were injected with 0.02 mg of a GnRH analogue i.m. (Buserelin); cows in Group 2 (n=47) were intramuscularly treated with 0.02 mg Buserelin plus 500 μg cloprostenol; and cows in Group 3 (n=50) were intramuscularly treated with 1500 IU hCG plus 500 μg cloprostenol. All cows received 500 μg cloprostenol intramuscularly on Day 10. Results: No statistically significant differences were found in the recovery time, interval to conception, conception rate at first AI, and pregnancy rates by Days 70 and 100 after treatment among the three groups. Conclusions: Simultaneous treatment of ovarian cysts with hCG or GnRH and cloprostenol appeared to have no advantage over the conventional method, GnRH alone, in dairy cows. Furthermore, hCG and GnRH have an equal therapeutic effect in cows with ovarian cysts.http://www.veterinaryworld.org/Vol.8/May-2015/15.pdfcloprostenoldairy cowsGnRHhCGovarian cyst |
| spellingShingle | T. Taktaz M. Kafi Adel Mokhtari M. Heidari Reproductive responses of dairy cows with ovarian cysts to simultaneous human chorionic gonadotropin or gonadotropin-releasing hormone and cloprostenol compared to gonadotropin-releasing hormone alone treatment Veterinary World cloprostenol dairy cows GnRH hCG ovarian cyst |
| title | Reproductive responses of dairy cows with ovarian cysts to simultaneous human chorionic gonadotropin or gonadotropin-releasing hormone and cloprostenol compared to gonadotropin-releasing hormone alone treatment |
| title_full | Reproductive responses of dairy cows with ovarian cysts to simultaneous human chorionic gonadotropin or gonadotropin-releasing hormone and cloprostenol compared to gonadotropin-releasing hormone alone treatment |
| title_fullStr | Reproductive responses of dairy cows with ovarian cysts to simultaneous human chorionic gonadotropin or gonadotropin-releasing hormone and cloprostenol compared to gonadotropin-releasing hormone alone treatment |
| title_full_unstemmed | Reproductive responses of dairy cows with ovarian cysts to simultaneous human chorionic gonadotropin or gonadotropin-releasing hormone and cloprostenol compared to gonadotropin-releasing hormone alone treatment |
| title_short | Reproductive responses of dairy cows with ovarian cysts to simultaneous human chorionic gonadotropin or gonadotropin-releasing hormone and cloprostenol compared to gonadotropin-releasing hormone alone treatment |
| title_sort | reproductive responses of dairy cows with ovarian cysts to simultaneous human chorionic gonadotropin or gonadotropin releasing hormone and cloprostenol compared to gonadotropin releasing hormone alone treatment |
| topic | cloprostenol dairy cows GnRH hCG ovarian cyst |
| url | http://www.veterinaryworld.org/Vol.8/May-2015/15.pdf |
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