Effect of intrauterine administration of gonadotropin releasing hormone with glycerol on serum LH concentrations in lactating dairy cows
The objectives of the study were to assess: (1) preovulatory serum LH concentrations and (2) synchrony of ovulation after im or iu administration of GnRH with or without the addition of glycerol. Cows were presynchronized with 2 injections of PGF2α given 14d apart (starting at 26±3DIM) followed by O...
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| Veröffentlicht in: | Animal reproduction science 2014-02, Vol.145 (1-2), p.15-22 |
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| creator | Bas, S. Maquivar, M.G. Silva, M.A. Coutinho da Day, M.L. Daglio, M.C. Harguindeguy, S. Titler, M. Schuenemann, G.M. |
| description | The objectives of the study were to assess: (1) preovulatory serum LH concentrations and (2) synchrony of ovulation after im or iu administration of GnRH with or without the addition of glycerol. Cows were presynchronized with 2 injections of PGF2α given 14d apart (starting at 26±3DIM) followed by Ovsynch (OV; GnRH-7d-PGF2α-48h-GnRH) 12d later. At the time of the second GnRH of OV (GnRH2), cows were blocked by parity and randomly allocated to 1 of 4 treatments: (1) control (CON; n=8) received 2mL of sterile water im; (2) im (IM; n=8) received 100μg of GnRH im; (3) cows were infused with 200μg GnRH into the uterus (IU; n=9); and (4) iu administration of 200μg GnRH plus glycerol 7% v/v (IUG; n=8). Serum circulating progesterone concentrations at hour 0 did not differ (P>0.05) among groups. Concentrations of LH were greater (P |
| doi_str_mv | 10.1016/j.anireprosci.2013.12.017 |
| format | Article |
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Cows were presynchronized with 2 injections of PGF2α given 14d apart (starting at 26±3DIM) followed by Ovsynch (OV; GnRH-7d-PGF2α-48h-GnRH) 12d later. At the time of the second GnRH of OV (GnRH2), cows were blocked by parity and randomly allocated to 1 of 4 treatments: (1) control (CON; n=8) received 2mL of sterile water im; (2) im (IM; n=8) received 100μg of GnRH im; (3) cows were infused with 200μg GnRH into the uterus (IU; n=9); and (4) iu administration of 200μg GnRH plus glycerol 7% v/v (IUG; n=8). Serum circulating progesterone concentrations at hour 0 did not differ (P>0.05) among groups. Concentrations of LH were greater (P<0.05) in IM than IU, IUG, and CON cows at hours 1, 1.5, 2, and 3. All cows ovulated within 48h in the IM (8/8) group followed by IU (6/9) and IUG (4/8) groups, and only two out of eight cows ovulated in the CON group. Although iu administration of GnRH in the IU and IUG groups resulted in lower serum concentrations of LH than IM cows, IU or IUG cows were able to ovulate within 48h after GnRH2 administration.</description><identifier>ISSN: 0378-4320</identifier><identifier>EISSN: 1873-2232</identifier><identifier>DOI: 10.1016/j.anireprosci.2013.12.017</identifier><identifier>PMID: 24461792</identifier><language>eng</language><publisher>Netherlands: Elsevier B.V</publisher><subject>Animals ; Cattle - blood ; Dairy cattle ; Dairying ; Drug Administration Routes ; Estrus Synchronization - methods ; Female ; Glycerol - administration & dosage ; Gonadotropin-Releasing Hormone - administration & dosage ; Intrauterine GnRH ; Lactation - blood ; Luteinizing Hormone - blood ; Ovulation ; Ovulation - drug effects ; Ovulation Induction - methods ; Ovulation Induction - veterinary ; Progesterone - blood ; Uterus</subject><ispartof>Animal reproduction science, 2014-02, Vol.145 (1-2), p.15-22</ispartof><rights>2014 Elsevier B.V.</rights><rights>Copyright © 2014 Elsevier B.V. All rights reserved.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c377t-bb927ada1ba774c63e17b9bc7df1bb1f36916e4741e4c892ebb42056744384e13</citedby><cites>FETCH-LOGICAL-c377t-bb927ada1ba774c63e17b9bc7df1bb1f36916e4741e4c892ebb42056744384e13</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.anireprosci.2013.12.017$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>315,782,786,3552,27931,27932,46002</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/24461792$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Bas, S.</creatorcontrib><creatorcontrib>Maquivar, M.G.</creatorcontrib><creatorcontrib>Silva, M.A. Coutinho da</creatorcontrib><creatorcontrib>Day, M.L.</creatorcontrib><creatorcontrib>Daglio, M.C.</creatorcontrib><creatorcontrib>Harguindeguy, S.</creatorcontrib><creatorcontrib>Titler, M.</creatorcontrib><creatorcontrib>Schuenemann, G.M.</creatorcontrib><title>Effect of intrauterine administration of gonadotropin releasing hormone with glycerol on serum LH concentrations in lactating dairy cows</title><title>Animal reproduction science</title><addtitle>Anim Reprod Sci</addtitle><description>The objectives of the study were to assess: (1) preovulatory serum LH concentrations and (2) synchrony of ovulation after im or iu administration of GnRH with or without the addition of glycerol. Cows were presynchronized with 2 injections of PGF2α given 14d apart (starting at 26±3DIM) followed by Ovsynch (OV; GnRH-7d-PGF2α-48h-GnRH) 12d later. At the time of the second GnRH of OV (GnRH2), cows were blocked by parity and randomly allocated to 1 of 4 treatments: (1) control (CON; n=8) received 2mL of sterile water im; (2) im (IM; n=8) received 100μg of GnRH im; (3) cows were infused with 200μg GnRH into the uterus (IU; n=9); and (4) iu administration of 200μg GnRH plus glycerol 7% v/v (IUG; n=8). Serum circulating progesterone concentrations at hour 0 did not differ (P>0.05) among groups. Concentrations of LH were greater (P<0.05) in IM than IU, IUG, and CON cows at hours 1, 1.5, 2, and 3. All cows ovulated within 48h in the IM (8/8) group followed by IU (6/9) and IUG (4/8) groups, and only two out of eight cows ovulated in the CON group. Although iu administration of GnRH in the IU and IUG groups resulted in lower serum concentrations of LH than IM cows, IU or IUG cows were able to ovulate within 48h after GnRH2 administration.</description><subject>Animals</subject><subject>Cattle - blood</subject><subject>Dairy cattle</subject><subject>Dairying</subject><subject>Drug Administration Routes</subject><subject>Estrus Synchronization - methods</subject><subject>Female</subject><subject>Glycerol - administration & dosage</subject><subject>Gonadotropin-Releasing Hormone - administration & dosage</subject><subject>Intrauterine GnRH</subject><subject>Lactation - blood</subject><subject>Luteinizing Hormone - blood</subject><subject>Ovulation</subject><subject>Ovulation - drug effects</subject><subject>Ovulation Induction - methods</subject><subject>Ovulation Induction - veterinary</subject><subject>Progesterone - blood</subject><subject>Uterus</subject><issn>0378-4320</issn><issn>1873-2232</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqNkcFuEzEURS0EakPpLyCzYzODn-2OM0sUFYoUiU27tmzPm9TRjB1sD1X-gM_GUQJiycqyfe59evcS8gFYCwy6T_vWBJ_wkGJ2vuUMRAu8ZaBekRWslWg4F_w1WTGh1o0UnF2TtznvGWOq6_orcs2l7ED1fEV-3Y8jukLjSH0oySwFkw9IzTD74HN9KT6G0_cuBjPEkuLBB5pwQpN92NHnmOZYBS--PNPddHSY4kSrJGNaZrp9oC4Gh-HilOsYOhlX6q2qB-PTsRIv-R15M5op4-3lvCFPX-4fNw_N9vvXb5vP28YJpUpjbc-VGQxYo5R0nUBQtrdODSNYC6PoeuhQKgko3brnaK3k7K5TUoq1RBA35OPZt6b3Y8Fc9Oyzw2kyAeOSNci-hxN_V9H-jLoadE446kPys0lHDUyfitB7_U8R-lSEBq5rEVX7_jJmsTMOf5V_kq_A5gxgXfanx6SrBdakhmroih6i_48xvwH1-aPL</recordid><startdate>201402</startdate><enddate>201402</enddate><creator>Bas, S.</creator><creator>Maquivar, M.G.</creator><creator>Silva, M.A. Coutinho da</creator><creator>Day, M.L.</creator><creator>Daglio, M.C.</creator><creator>Harguindeguy, S.</creator><creator>Titler, M.</creator><creator>Schuenemann, G.M.</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>201402</creationdate><title>Effect of intrauterine administration of gonadotropin releasing hormone with glycerol on serum LH concentrations in lactating dairy cows</title><author>Bas, S. ; Maquivar, M.G. ; Silva, M.A. Coutinho da ; Day, M.L. ; Daglio, M.C. ; Harguindeguy, S. ; Titler, M. ; Schuenemann, G.M.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c377t-bb927ada1ba774c63e17b9bc7df1bb1f36916e4741e4c892ebb42056744384e13</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2014</creationdate><topic>Animals</topic><topic>Cattle - blood</topic><topic>Dairy cattle</topic><topic>Dairying</topic><topic>Drug Administration Routes</topic><topic>Estrus Synchronization - methods</topic><topic>Female</topic><topic>Glycerol - administration & dosage</topic><topic>Gonadotropin-Releasing Hormone - administration & dosage</topic><topic>Intrauterine GnRH</topic><topic>Lactation - blood</topic><topic>Luteinizing Hormone - blood</topic><topic>Ovulation</topic><topic>Ovulation - drug effects</topic><topic>Ovulation Induction - methods</topic><topic>Ovulation Induction - veterinary</topic><topic>Progesterone - blood</topic><topic>Uterus</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Bas, S.</creatorcontrib><creatorcontrib>Maquivar, M.G.</creatorcontrib><creatorcontrib>Silva, M.A. Coutinho da</creatorcontrib><creatorcontrib>Day, M.L.</creatorcontrib><creatorcontrib>Daglio, M.C.</creatorcontrib><creatorcontrib>Harguindeguy, S.</creatorcontrib><creatorcontrib>Titler, M.</creatorcontrib><creatorcontrib>Schuenemann, G.M.</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>Bas, S.</au><au>Maquivar, M.G.</au><au>Silva, M.A. Coutinho da</au><au>Day, M.L.</au><au>Daglio, M.C.</au><au>Harguindeguy, S.</au><au>Titler, M.</au><au>Schuenemann, G.M.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Effect of intrauterine administration of gonadotropin releasing hormone with glycerol on serum LH concentrations in lactating dairy cows</atitle><jtitle>Animal reproduction science</jtitle><addtitle>Anim Reprod Sci</addtitle><date>2014-02</date><risdate>2014</risdate><volume>145</volume><issue>1-2</issue><spage>15</spage><epage>22</epage><pages>15-22</pages><issn>0378-4320</issn><eissn>1873-2232</eissn><abstract>The objectives of the study were to assess: (1) preovulatory serum LH concentrations and (2) synchrony of ovulation after im or iu administration of GnRH with or without the addition of glycerol. Cows were presynchronized with 2 injections of PGF2α given 14d apart (starting at 26±3DIM) followed by Ovsynch (OV; GnRH-7d-PGF2α-48h-GnRH) 12d later. At the time of the second GnRH of OV (GnRH2), cows were blocked by parity and randomly allocated to 1 of 4 treatments: (1) control (CON; n=8) received 2mL of sterile water im; (2) im (IM; n=8) received 100μg of GnRH im; (3) cows were infused with 200μg GnRH into the uterus (IU; n=9); and (4) iu administration of 200μg GnRH plus glycerol 7% v/v (IUG; n=8). Serum circulating progesterone concentrations at hour 0 did not differ (P>0.05) among groups. Concentrations of LH were greater (P<0.05) in IM than IU, IUG, and CON cows at hours 1, 1.5, 2, and 3. All cows ovulated within 48h in the IM (8/8) group followed by IU (6/9) and IUG (4/8) groups, and only two out of eight cows ovulated in the CON group. Although iu administration of GnRH in the IU and IUG groups resulted in lower serum concentrations of LH than IM cows, IU or IUG cows were able to ovulate within 48h after GnRH2 administration.</abstract><cop>Netherlands</cop><pub>Elsevier B.V</pub><pmid>24461792</pmid><doi>10.1016/j.anireprosci.2013.12.017</doi><tpages>8</tpages></addata></record> |
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| ispartof | Animal reproduction science, 2014-02, Vol.145 (1-2), p.15-22 |
| issn | 0378-4320 1873-2232 |
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| source | MEDLINE; Access via ScienceDirect (Elsevier) |
| subjects | Animals Cattle - blood Dairy cattle Dairying Drug Administration Routes Estrus Synchronization - methods Female Glycerol - administration & dosage Gonadotropin-Releasing Hormone - administration & dosage Intrauterine GnRH Lactation - blood Luteinizing Hormone - blood Ovulation Ovulation - drug effects Ovulation Induction - methods Ovulation Induction - veterinary Progesterone - blood Uterus |
| title | Effect of intrauterine administration of gonadotropin releasing hormone with glycerol on serum LH concentrations in lactating dairy cows |
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