Effect of repeated low doses of GnRH on follicular development and ovulation in anovulatory dairy cows with follicle growth to emergence size
The aim of the study was to evaluate the effect of repeated low doses of GnRH agonist buserelin once a day for 5 days on follicle development and ovulation in anovulatory dairy cows with follicles growth only to emergence. The study was conducted on 71 anovulatory Polish Holstein Friesian cows. Anov...
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| Veröffentlicht in: | Polish journal of veterinary sciences 2022-01, Vol.25 (3), p.391-396 |
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| creator | Barański, W. Nowicki, A. Zduńczyk, S. Tobolski, D. |
| description | The aim of the study was to evaluate the effect of repeated low doses of GnRH agonist buserelin once a day for 5 days on follicle development and ovulation in anovulatory dairy cows with follicles growth only to emergence. The study was conducted on 71 anovulatory Polish Holstein Friesian cows. Anovulation with growth of follicles to emergence was defined as small ovaries with follicles of < 5 mm in diameter and without corpus luteum on two examinations in a 7-10 day interval between 50-60 days after parturition. Cows were allocated to one of two group. Cows from group 1 (n = 58) received 0.4 pg of buserelin (Receptal, MSD, Poland) i.m. once a day for 5 days. Control cows from group 2 (n = 13) received saline. Ovarian structures were monitored weekly after the end of treatment by ultrasound for 4 weeks. The diameter of ovarian follicles on the ovaries was measured and recorded. Occurrence of ovulation was determined by the presence of corpus luteum. Overall, ovulation occurred in 46.6% (27/58) of cows treated with repeated doses of GnRH, while no corpus luteum was observed in the control group during the study period. There were significantly (p |
| doi_str_mv | 10.24425/pjvs.2022.142022 |
| format | Article |
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The study was conducted on 71 anovulatory Polish Holstein Friesian cows. Anovulation with growth of follicles to emergence was defined as small ovaries with follicles of < 5 mm in diameter and without corpus luteum on two examinations in a 7-10 day interval between 50-60 days after parturition. Cows were allocated to one of two group. Cows from group 1 (n = 58) received 0.4 pg of buserelin (Receptal, MSD, Poland) i.m. once a day for 5 days. Control cows from group 2 (n = 13) received saline. Ovarian structures were monitored weekly after the end of treatment by ultrasound for 4 weeks. The diameter of ovarian follicles on the ovaries was measured and recorded. Occurrence of ovulation was determined by the presence of corpus luteum. Overall, ovulation occurred in 46.6% (27/58) of cows treated with repeated doses of GnRH, while no corpus luteum was observed in the control group during the study period. There were significantly (p<0.05) more follicles 6-9 mm in diameter and 10-20 mm in diameter in cows treated with GnRH than in control cows. In conclusion, repeated low doses of GnRH analogue buserelin once a day for 5 days stimulate the development of ovarian follicles in anovulatory dairy cows with small ovarian follicles and led to ovulation in 46.6% of cows during 4 weeks after the end of the treatment.</description><identifier>ISSN: 1505-1773</identifier><identifier>EISSN: 2300-2557</identifier><identifier>DOI: 10.24425/pjvs.2022.142022</identifier><language>eng</language><publisher>Warsaw: Polish Academy of Sciences, Committee of Veterinary Sciences</publisher><subject>Artificial insemination ; Corpus luteum ; Cysts ; Dairy cattle ; Fertility ; Follicles ; Gonadotropin-releasing hormone ; Ovaries ; Ovulation ; Parturition ; Ultrasonic imaging</subject><ispartof>Polish journal of veterinary sciences, 2022-01, Vol.25 (3), p.391-396</ispartof><rights>Copyright Polish Academy of Sciences, Committee of Veterinary Sciences 2022</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,777,781,27905,27906</link.rule.ids></links><search><creatorcontrib>Barański, W.</creatorcontrib><creatorcontrib>Nowicki, A.</creatorcontrib><creatorcontrib>Zduńczyk, S.</creatorcontrib><creatorcontrib>Tobolski, D.</creatorcontrib><title>Effect of repeated low doses of GnRH on follicular development and ovulation in anovulatory dairy cows with follicle growth to emergence size</title><title>Polish journal of veterinary sciences</title><description>The aim of the study was to evaluate the effect of repeated low doses of GnRH agonist buserelin once a day for 5 days on follicle development and ovulation in anovulatory dairy cows with follicles growth only to emergence. The study was conducted on 71 anovulatory Polish Holstein Friesian cows. Anovulation with growth of follicles to emergence was defined as small ovaries with follicles of < 5 mm in diameter and without corpus luteum on two examinations in a 7-10 day interval between 50-60 days after parturition. Cows were allocated to one of two group. Cows from group 1 (n = 58) received 0.4 pg of buserelin (Receptal, MSD, Poland) i.m. once a day for 5 days. Control cows from group 2 (n = 13) received saline. Ovarian structures were monitored weekly after the end of treatment by ultrasound for 4 weeks. The diameter of ovarian follicles on the ovaries was measured and recorded. Occurrence of ovulation was determined by the presence of corpus luteum. Overall, ovulation occurred in 46.6% (27/58) of cows treated with repeated doses of GnRH, while no corpus luteum was observed in the control group during the study period. There were significantly (p<0.05) more follicles 6-9 mm in diameter and 10-20 mm in diameter in cows treated with GnRH than in control cows. In conclusion, repeated low doses of GnRH analogue buserelin once a day for 5 days stimulate the development of ovarian follicles in anovulatory dairy cows with small ovarian follicles and led to ovulation in 46.6% of cows during 4 weeks after the end of the treatment.</description><subject>Artificial insemination</subject><subject>Corpus luteum</subject><subject>Cysts</subject><subject>Dairy cattle</subject><subject>Fertility</subject><subject>Follicles</subject><subject>Gonadotropin-releasing hormone</subject><subject>Ovaries</subject><subject>Ovulation</subject><subject>Parturition</subject><subject>Ultrasonic imaging</subject><issn>1505-1773</issn><issn>2300-2557</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2022</creationdate><recordtype>article</recordtype><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><recordid>eNotUNFKwzAUDaLgnH6AbwGfO9OkSbpHGdMJA0H0OaTJzezompp0K_Mf_GdTt5d7OIdzz-UehO5zMqNFQfljtz3EGSWUzvJihAs0oYyQjHIuL9Ek54RnuZTsGt3EuCVEzFkpJuh36RyYHnuHA3Sge7C48QO2PkIc1Zf2fYV9i51vmtrsGx2whQM0vttB22PdWuwPSe7rZKrbJJyoD0dsdZ2m8UPEQ91_nTMawJvgh8R7j2EHYQOtARzrH7hFV043Ee7OOEWfz8uPxSpbv728Lp7WmWEk77PSzAWBUgAYV1YsPVDxihNprQGg3Dihiau4JpZLzoQohCQVZ1rSUvCKcDZFD6fcLvjvPcRebf0-tOmkopJKSWTaSa785DLBxxjAqS7UOx2OKifqv3U1tq7GutWpdfYHxPh5aw</recordid><startdate>20220101</startdate><enddate>20220101</enddate><creator>Barański, W.</creator><creator>Nowicki, A.</creator><creator>Zduńczyk, S.</creator><creator>Tobolski, D.</creator><general>Polish Academy of Sciences, Committee of Veterinary Sciences</general><scope>AAYXX</scope><scope>CITATION</scope><scope>3V.</scope><scope>7X7</scope><scope>7XB</scope><scope>88E</scope><scope>8FE</scope><scope>8FH</scope><scope>8FI</scope><scope>8FJ</scope><scope>8FK</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BBNVY</scope><scope>BENPR</scope><scope>BHPHI</scope><scope>BYOGL</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>FYUFA</scope><scope>GHDGH</scope><scope>GNUQQ</scope><scope>HCIFZ</scope><scope>K9.</scope><scope>LK8</scope><scope>M0S</scope><scope>M1P</scope><scope>M7P</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope></search><sort><creationdate>20220101</creationdate><title>Effect of repeated low doses of GnRH on follicular development and ovulation in anovulatory dairy cows with follicle growth to emergence size</title><author>Barański, W. ; Nowicki, A. ; Zduńczyk, S. ; Tobolski, D.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c301t-8c960e86eecf8b3fecb5b507ddcee25cf6a0fb5a0d5753664670b53a72865b053</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2022</creationdate><topic>Artificial insemination</topic><topic>Corpus luteum</topic><topic>Cysts</topic><topic>Dairy cattle</topic><topic>Fertility</topic><topic>Follicles</topic><topic>Gonadotropin-releasing hormone</topic><topic>Ovaries</topic><topic>Ovulation</topic><topic>Parturition</topic><topic>Ultrasonic imaging</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Barański, W.</creatorcontrib><creatorcontrib>Nowicki, A.</creatorcontrib><creatorcontrib>Zduńczyk, S.</creatorcontrib><creatorcontrib>Tobolski, D.</creatorcontrib><collection>CrossRef</collection><collection>ProQuest Central (Corporate)</collection><collection>Health & Medical Collection</collection><collection>ProQuest Central (purchase pre-March 2016)</collection><collection>Medical Database (Alumni Edition)</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Natural Science Collection</collection><collection>Hospital Premium Collection</collection><collection>Hospital Premium Collection (Alumni Edition)</collection><collection>ProQuest Central (Alumni) (purchase pre-March 2016)</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest Central UK/Ireland</collection><collection>ProQuest Central Essentials</collection><collection>Biological Science Collection</collection><collection>ProQuest Central</collection><collection>Natural Science Collection</collection><collection>East Europe, Central Europe Database</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central Korea</collection><collection>Health Research Premium Collection</collection><collection>Health Research Premium Collection (Alumni)</collection><collection>ProQuest Central Student</collection><collection>SciTech Premium Collection</collection><collection>ProQuest Health & Medical Complete (Alumni)</collection><collection>ProQuest Biological Science Collection</collection><collection>Health & Medical Collection (Alumni Edition)</collection><collection>Medical Database</collection><collection>Biological Science Database</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>ProQuest Central China</collection><jtitle>Polish journal of veterinary sciences</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Barański, W.</au><au>Nowicki, A.</au><au>Zduńczyk, S.</au><au>Tobolski, D.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Effect of repeated low doses of GnRH on follicular development and ovulation in anovulatory dairy cows with follicle growth to emergence size</atitle><jtitle>Polish journal of veterinary sciences</jtitle><date>2022-01-01</date><risdate>2022</risdate><volume>25</volume><issue>3</issue><spage>391</spage><epage>396</epage><pages>391-396</pages><issn>1505-1773</issn><eissn>2300-2557</eissn><abstract>The aim of the study was to evaluate the effect of repeated low doses of GnRH agonist buserelin once a day for 5 days on follicle development and ovulation in anovulatory dairy cows with follicles growth only to emergence. The study was conducted on 71 anovulatory Polish Holstein Friesian cows. Anovulation with growth of follicles to emergence was defined as small ovaries with follicles of < 5 mm in diameter and without corpus luteum on two examinations in a 7-10 day interval between 50-60 days after parturition. Cows were allocated to one of two group. Cows from group 1 (n = 58) received 0.4 pg of buserelin (Receptal, MSD, Poland) i.m. once a day for 5 days. Control cows from group 2 (n = 13) received saline. Ovarian structures were monitored weekly after the end of treatment by ultrasound for 4 weeks. The diameter of ovarian follicles on the ovaries was measured and recorded. Occurrence of ovulation was determined by the presence of corpus luteum. Overall, ovulation occurred in 46.6% (27/58) of cows treated with repeated doses of GnRH, while no corpus luteum was observed in the control group during the study period. There were significantly (p<0.05) more follicles 6-9 mm in diameter and 10-20 mm in diameter in cows treated with GnRH than in control cows. In conclusion, repeated low doses of GnRH analogue buserelin once a day for 5 days stimulate the development of ovarian follicles in anovulatory dairy cows with small ovarian follicles and led to ovulation in 46.6% of cows during 4 weeks after the end of the treatment.</abstract><cop>Warsaw</cop><pub>Polish Academy of Sciences, Committee of Veterinary Sciences</pub><doi>10.24425/pjvs.2022.142022</doi><tpages>6</tpages><oa>free_for_read</oa></addata></record> |
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| source | Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals |
| subjects | Artificial insemination Corpus luteum Cysts Dairy cattle Fertility Follicles Gonadotropin-releasing hormone Ovaries Ovulation Parturition Ultrasonic imaging |
| title | Effect of repeated low doses of GnRH on follicular development and ovulation in anovulatory dairy cows with follicle growth to emergence size |
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