Reproductive efficiency of treated Karakul ewes with short-term progesterone and hCG injections during the non-breeding and breeding seasons
The aim of this study was to evaluate reproductive efficiency of ewes following a short-term treatment with progesterone (P4) plus human chorionic gonadotropin (hCG) injections. In Exp 1, ewes (n = 65) were used during the non-breeding season and received P4, three times every other day (n = 22, 3PH...
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| Veröffentlicht in: | Animal reproduction science 2022-04, Vol.239, p.106969-106969, Article 106969 |
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| creator | Dehkordi, Reza Solymani Mirzaei, Abdolah Boostani, Alidad |
| description | The aim of this study was to evaluate reproductive efficiency of ewes following a short-term treatment with progesterone (P4) plus human chorionic gonadotropin (hCG) injections. In Exp 1, ewes (n = 65) were used during the non-breeding season and received P4, three times every other day (n = 22, 3PHCG, IM) or a single dose of P4 (n = 21, PHCG). We injected hCG in all ewes 24 h after the P4 treatment, and distilled water in control group (n = 22). Blood collection were performed on days −13, −6 and + 8 relative to ram release. In Exp 2, during the breeding season, ewes (n = 66) were assigned to the 3PHCG (n = 33) and control (n = 33) groups described for Exp 1, and subsequently received PGF2α 48 h before ram release. Pregnancy diagnosis was performed on day 42 after the ram release which was done 24 h after the hCG injection. In Exp 1, Estrus, pregnancy rate at induced estrus, and lambing rates at the first cycle were greater in 3PHCG (81.8%, 59.1% and 54.5%) group compared with the PHCG (38.1%, 23.8% and 19%) and control (0%, 0% and 0%) groups (P |
| doi_str_mv | 10.1016/j.anireprosci.2022.106969 |
| format | Article |
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•P4 injection combined with hCG for synchronization protocol in ewes was provided.•A single hCG injection 24 h after P4 injections induce and synchonize estrus in ewes.•This appears as an innovative and effective protocol to synchronize lambing in ewes.</description><identifier>ISSN: 0378-4320</identifier><identifier>EISSN: 1873-2232</identifier><identifier>DOI: 10.1016/j.anireprosci.2022.106969</identifier><identifier>PMID: 35325836</identifier><language>eng</language><publisher>Netherlands: Elsevier B.V</publisher><subject>Animals ; Breeding ; Chorionic Gonadotropin - pharmacology ; Estrus Synchronization ; Ewe ; Female ; HCG ; Male ; Non-breeding ; Pregnancy ; Progesterone ; Progesterone - pharmacology ; Reproduction ; Reproductive efficiency ; Seasons ; Sheep</subject><ispartof>Animal reproduction science, 2022-04, Vol.239, p.106969-106969, Article 106969</ispartof><rights>2022 Elsevier B.V.</rights><rights>Copyright © 2022 Elsevier B.V. All rights reserved.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c307t-46a158d5f1d8b69201b2b1552ebde344b4cc1054624dfbd0d7746b4f5e43a9a33</citedby><cites>FETCH-LOGICAL-c307t-46a158d5f1d8b69201b2b1552ebde344b4cc1054624dfbd0d7746b4f5e43a9a33</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S0378432022000483$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3537,27901,27902,65534</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/35325836$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Dehkordi, Reza Solymani</creatorcontrib><creatorcontrib>Mirzaei, Abdolah</creatorcontrib><creatorcontrib>Boostani, Alidad</creatorcontrib><title>Reproductive efficiency of treated Karakul ewes with short-term progesterone and hCG injections during the non-breeding and breeding seasons</title><title>Animal reproduction science</title><addtitle>Anim Reprod Sci</addtitle><description>The aim of this study was to evaluate reproductive efficiency of ewes following a short-term treatment with progesterone (P4) plus human chorionic gonadotropin (hCG) injections. In Exp 1, ewes (n = 65) were used during the non-breeding season and received P4, three times every other day (n = 22, 3PHCG, IM) or a single dose of P4 (n = 21, PHCG). We injected hCG in all ewes 24 h after the P4 treatment, and distilled water in control group (n = 22). Blood collection were performed on days −13, −6 and + 8 relative to ram release. In Exp 2, during the breeding season, ewes (n = 66) were assigned to the 3PHCG (n = 33) and control (n = 33) groups described for Exp 1, and subsequently received PGF2α 48 h before ram release. Pregnancy diagnosis was performed on day 42 after the ram release which was done 24 h after the hCG injection. In Exp 1, Estrus, pregnancy rate at induced estrus, and lambing rates at the first cycle were greater in 3PHCG (81.8%, 59.1% and 54.5%) group compared with the PHCG (38.1%, 23.8% and 19%) and control (0%, 0% and 0%) groups (P < 0.05). In Exp 2, Estrus, pregnancy rate at induced estrus, and lambing rates at the first cycle were greater in 3PHCG (75.8%, 57.6% and 51.5%) group compared with the control (39.4%, 30.3% and 27.3%) groups (P < 0.05). To conclude, hCG injection 24 h after P4 administration is an effective protocol to induce fertile estrus during non-breeding season, and synchronize estrus and lambing of ewe in the breeding season.
•P4 injection combined with hCG for synchronization protocol in ewes was provided.•A single hCG injection 24 h after P4 injections induce and synchonize estrus in ewes.•This appears as an innovative and effective protocol to synchronize lambing in ewes.</description><subject>Animals</subject><subject>Breeding</subject><subject>Chorionic Gonadotropin - pharmacology</subject><subject>Estrus Synchronization</subject><subject>Ewe</subject><subject>Female</subject><subject>HCG</subject><subject>Male</subject><subject>Non-breeding</subject><subject>Pregnancy</subject><subject>Progesterone</subject><subject>Progesterone - pharmacology</subject><subject>Reproduction</subject><subject>Reproductive efficiency</subject><subject>Seasons</subject><subject>Sheep</subject><issn>0378-4320</issn><issn>1873-2232</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2022</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqNkc1OGzEUhS3UiqSBV0DurptJ_T8zyyoqUDUSEipryz93iNPEk9ozIN6Bh8bTUNQlK9tX59x7_R2EPlOypISqr9uliSHBIfXZhSUjjJW6alV7gua0qXnFGGcf0JzwuqkEZ2SGPuW8JYTUSrWnaMYlZ7Lhao6eb6c2fnRDeAAMXRdcgOiecN_hIYEZwOOfJpnf4w7DI2T8GIYNzps-DdUAaY-L-x5yufYRsIkeb1ZXOMQtlI59zNiPKcR7PGwAxz5WNgH4qTBJ3x4ZTC7iM_SxM7sM56_nAt1dfv-1uq7WN1c_Vt_WleOkHiqhDJWNlx31jVUtI9QyS6VkYD1wIaxwjhIpFBO-s574uhbKik6C4KY1nC_Ql2PfsvyfsWyv9yE72O1MhH7MmikhCivJ2iJtj1JXYOcEnT6ksDfpSVOipzD0Vv8Xhp7C0Mcwivfidcxo9-DfnP_oF8HqKIDy2YcASee_9AuUVPhp34d3jHkBruqkTQ</recordid><startdate>202204</startdate><enddate>202204</enddate><creator>Dehkordi, Reza Solymani</creator><creator>Mirzaei, Abdolah</creator><creator>Boostani, Alidad</creator><general>Elsevier B.V</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>202204</creationdate><title>Reproductive efficiency of treated Karakul ewes with short-term progesterone and hCG injections during the non-breeding and breeding seasons</title><author>Dehkordi, Reza Solymani ; Mirzaei, Abdolah ; Boostani, Alidad</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c307t-46a158d5f1d8b69201b2b1552ebde344b4cc1054624dfbd0d7746b4f5e43a9a33</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2022</creationdate><topic>Animals</topic><topic>Breeding</topic><topic>Chorionic Gonadotropin - pharmacology</topic><topic>Estrus Synchronization</topic><topic>Ewe</topic><topic>Female</topic><topic>HCG</topic><topic>Male</topic><topic>Non-breeding</topic><topic>Pregnancy</topic><topic>Progesterone</topic><topic>Progesterone - pharmacology</topic><topic>Reproduction</topic><topic>Reproductive efficiency</topic><topic>Seasons</topic><topic>Sheep</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Dehkordi, Reza Solymani</creatorcontrib><creatorcontrib>Mirzaei, Abdolah</creatorcontrib><creatorcontrib>Boostani, Alidad</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Animal reproduction science</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Dehkordi, Reza Solymani</au><au>Mirzaei, Abdolah</au><au>Boostani, Alidad</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Reproductive efficiency of treated Karakul ewes with short-term progesterone and hCG injections during the non-breeding and breeding seasons</atitle><jtitle>Animal reproduction science</jtitle><addtitle>Anim Reprod Sci</addtitle><date>2022-04</date><risdate>2022</risdate><volume>239</volume><spage>106969</spage><epage>106969</epage><pages>106969-106969</pages><artnum>106969</artnum><issn>0378-4320</issn><eissn>1873-2232</eissn><abstract>The aim of this study was to evaluate reproductive efficiency of ewes following a short-term treatment with progesterone (P4) plus human chorionic gonadotropin (hCG) injections. In Exp 1, ewes (n = 65) were used during the non-breeding season and received P4, three times every other day (n = 22, 3PHCG, IM) or a single dose of P4 (n = 21, PHCG). We injected hCG in all ewes 24 h after the P4 treatment, and distilled water in control group (n = 22). Blood collection were performed on days −13, −6 and + 8 relative to ram release. In Exp 2, during the breeding season, ewes (n = 66) were assigned to the 3PHCG (n = 33) and control (n = 33) groups described for Exp 1, and subsequently received PGF2α 48 h before ram release. Pregnancy diagnosis was performed on day 42 after the ram release which was done 24 h after the hCG injection. In Exp 1, Estrus, pregnancy rate at induced estrus, and lambing rates at the first cycle were greater in 3PHCG (81.8%, 59.1% and 54.5%) group compared with the PHCG (38.1%, 23.8% and 19%) and control (0%, 0% and 0%) groups (P < 0.05). In Exp 2, Estrus, pregnancy rate at induced estrus, and lambing rates at the first cycle were greater in 3PHCG (75.8%, 57.6% and 51.5%) group compared with the control (39.4%, 30.3% and 27.3%) groups (P < 0.05). To conclude, hCG injection 24 h after P4 administration is an effective protocol to induce fertile estrus during non-breeding season, and synchronize estrus and lambing of ewe in the breeding season.
•P4 injection combined with hCG for synchronization protocol in ewes was provided.•A single hCG injection 24 h after P4 injections induce and synchonize estrus in ewes.•This appears as an innovative and effective protocol to synchronize lambing in ewes.</abstract><cop>Netherlands</cop><pub>Elsevier B.V</pub><pmid>35325836</pmid><doi>10.1016/j.anireprosci.2022.106969</doi><tpages>1</tpages></addata></record> |
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| subjects | Animals Breeding Chorionic Gonadotropin - pharmacology Estrus Synchronization Ewe Female HCG Male Non-breeding Pregnancy Progesterone Progesterone - pharmacology Reproduction Reproductive efficiency Seasons Sheep |
| title | Reproductive efficiency of treated Karakul ewes with short-term progesterone and hCG injections during the non-breeding and breeding seasons |
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