Effect of exogenous FSH on estrus, ovulation and endogenous hormone release in dairy cows
Fifteen lactating Holstein cows were randomly allotted to receive either 0 mg (group 0), 32 mg (group 1) or 50 mg (group 2) porcine follicle stimulating hormone (FSH-P) injected in 10 fractions at 12 hr intervals beginning on day 9 of the estrous cycle. All cows received 25 mg prostaglandin (PG) on...
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| Veröffentlicht in: | Theriogenology 1982-09, Vol.18 (3), p.311-323 |
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| container_title | Theriogenology |
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| creator | Barnes, M.A. Martinez Castellano, A. Kazmer, G.W. Wade, R.J. Halman, R.D. |
| description | Fifteen lactating Holstein cows were randomly allotted to receive either 0 mg (group 0), 32 mg (group 1) or 50 mg (group 2) porcine follicle stimulating hormone (FSH-P) injected in 10 fractions at 12 hr intervals beginning on day 9 of the estrous cycle. All cows received 25 mg prostaglandin (PG) on day 11. Jugular blood samples were collected from cows in all groups at 6 hr intervals beginning on day 7 and continuing through expression of estrus. Mean duration to occurrence of estrus and preovulatory LH surge after PG injection was reduced (
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| doi_str_mv | 10.1016/0093-691X(82)90009-7 |
| format | Article |
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P<.05) by injection of FSH-P. Mean number of ovulations increased (
P<.05) progressively with increased dose of FSH-P. Mean peripheral progesterone declined more uniformly in FSH-P treated cows after PG and increased earlier (
P<.05) after estrus in group 2 cows compared to group 0 and 1 cows. Mean plasma estradiol-17β elevated (
P<.05) after PG injection in both FSH-P-treated groups compared to group 0 cows. Both LH and FSH increased (
P<.05) for 36 hr after initiation of FSH-P injection in groups 1 and 2, then declined until after PG injection. Peak LH and FSH occurred more uniformly following PG in treated cows. Results indicate that FSH-P increased endogenous gonadotropin release, estradiol-17β, ovulation rate and reduced duration to estrus and preovulatory gonadotropin release after PG. Injection of 50 mg FSH-P increased plasma estradiol-17β and ovulation rate compared to injection of 32 mg FSH-P.</description><identifier>ISSN: 0093-691X</identifier><identifier>EISSN: 1879-3231</identifier><identifier>DOI: 10.1016/0093-691X(82)90009-7</identifier><identifier>PMID: 16725753</identifier><language>eng</language><publisher>United States: Elsevier Inc</publisher><ispartof>Theriogenology, 1982-09, Vol.18 (3), p.311-323</ispartof><rights>1982</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c359t-162e5ec602a5dd464db43d03801bb1a9494b5744ccaf3de6918457c3de9e758b3</citedby><cites>FETCH-LOGICAL-c359t-162e5ec602a5dd464db43d03801bb1a9494b5744ccaf3de6918457c3de9e758b3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/0093691X82900097$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3536,27903,27904,65309</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/16725753$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Barnes, M.A.</creatorcontrib><creatorcontrib>Martinez Castellano, A.</creatorcontrib><creatorcontrib>Kazmer, G.W.</creatorcontrib><creatorcontrib>Wade, R.J.</creatorcontrib><creatorcontrib>Halman, R.D.</creatorcontrib><title>Effect of exogenous FSH on estrus, ovulation and endogenous hormone release in dairy cows</title><title>Theriogenology</title><addtitle>Theriogenology</addtitle><description>Fifteen lactating Holstein cows were randomly allotted to receive either 0 mg (group 0), 32 mg (group 1) or 50 mg (group 2) porcine follicle stimulating hormone (FSH-P) injected in 10 fractions at 12 hr intervals beginning on day 9 of the estrous cycle. All cows received 25 mg prostaglandin (PG) on day 11. Jugular blood samples were collected from cows in all groups at 6 hr intervals beginning on day 7 and continuing through expression of estrus. Mean duration to occurrence of estrus and preovulatory LH surge after PG injection was reduced (
P<.05) by injection of FSH-P. Mean number of ovulations increased (
P<.05) progressively with increased dose of FSH-P. Mean peripheral progesterone declined more uniformly in FSH-P treated cows after PG and increased earlier (
P<.05) after estrus in group 2 cows compared to group 0 and 1 cows. Mean plasma estradiol-17β elevated (
P<.05) after PG injection in both FSH-P-treated groups compared to group 0 cows. Both LH and FSH increased (
P<.05) for 36 hr after initiation of FSH-P injection in groups 1 and 2, then declined until after PG injection. Peak LH and FSH occurred more uniformly following PG in treated cows. Results indicate that FSH-P increased endogenous gonadotropin release, estradiol-17β, ovulation rate and reduced duration to estrus and preovulatory gonadotropin release after PG. Injection of 50 mg FSH-P increased plasma estradiol-17β and ovulation rate compared to injection of 32 mg FSH-P.</description><issn>0093-691X</issn><issn>1879-3231</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1982</creationdate><recordtype>article</recordtype><recordid>eNp9kMtKAzEUQIMotlb_QCQ7FRxNJpnXRpDSWqHgQgVdhUxyRyMzE01mqv17U1t15yo3l3NfB6FDSs4poekFIQWL0oI-nuTxaUHCN8q20JDmWRGxmNFtNPxFBmjP-9fAsDSlu2hA0yxOsoQN0dOkqkB12FYYPu0ztLb3eHo3w7bF4DvX-zNsF30tOxMystUYWv3DvVjX2BawgxqkB2xarKVxS6zsh99HO5WsPRxs3hF6mE7ux7Nofnt9M76aR4olRRfRNIYEVEpimWjNU65LzjRhOaFlSWXBC14mGedKyYppCNfkPMlUCAvIkrxkI3S87vvm7HsfdhaN8QrqWrYQlhQZ45TklNNA8jWpnPXeQSXenGmkWwpKxMqpWAkTK2Eij8W301A-QkebAX3ZgP4r2kgMwOUagHDmwoATXhloFWjjgluhrfl_whcTZIZT</recordid><startdate>198209</startdate><enddate>198209</enddate><creator>Barnes, M.A.</creator><creator>Martinez Castellano, A.</creator><creator>Kazmer, G.W.</creator><creator>Wade, R.J.</creator><creator>Halman, R.D.</creator><general>Elsevier Inc</general><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>198209</creationdate><title>Effect of exogenous FSH on estrus, ovulation and endogenous hormone release in dairy cows</title><author>Barnes, M.A. ; Martinez Castellano, A. ; Kazmer, G.W. ; Wade, R.J. ; Halman, R.D.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c359t-162e5ec602a5dd464db43d03801bb1a9494b5744ccaf3de6918457c3de9e758b3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1982</creationdate><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Barnes, M.A.</creatorcontrib><creatorcontrib>Martinez Castellano, A.</creatorcontrib><creatorcontrib>Kazmer, G.W.</creatorcontrib><creatorcontrib>Wade, R.J.</creatorcontrib><creatorcontrib>Halman, R.D.</creatorcontrib><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Theriogenology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Barnes, M.A.</au><au>Martinez Castellano, A.</au><au>Kazmer, G.W.</au><au>Wade, R.J.</au><au>Halman, R.D.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Effect of exogenous FSH on estrus, ovulation and endogenous hormone release in dairy cows</atitle><jtitle>Theriogenology</jtitle><addtitle>Theriogenology</addtitle><date>1982-09</date><risdate>1982</risdate><volume>18</volume><issue>3</issue><spage>311</spage><epage>323</epage><pages>311-323</pages><issn>0093-691X</issn><eissn>1879-3231</eissn><abstract>Fifteen lactating Holstein cows were randomly allotted to receive either 0 mg (group 0), 32 mg (group 1) or 50 mg (group 2) porcine follicle stimulating hormone (FSH-P) injected in 10 fractions at 12 hr intervals beginning on day 9 of the estrous cycle. All cows received 25 mg prostaglandin (PG) on day 11. Jugular blood samples were collected from cows in all groups at 6 hr intervals beginning on day 7 and continuing through expression of estrus. Mean duration to occurrence of estrus and preovulatory LH surge after PG injection was reduced (
P<.05) by injection of FSH-P. Mean number of ovulations increased (
P<.05) progressively with increased dose of FSH-P. Mean peripheral progesterone declined more uniformly in FSH-P treated cows after PG and increased earlier (
P<.05) after estrus in group 2 cows compared to group 0 and 1 cows. Mean plasma estradiol-17β elevated (
P<.05) after PG injection in both FSH-P-treated groups compared to group 0 cows. Both LH and FSH increased (
P<.05) for 36 hr after initiation of FSH-P injection in groups 1 and 2, then declined until after PG injection. Peak LH and FSH occurred more uniformly following PG in treated cows. Results indicate that FSH-P increased endogenous gonadotropin release, estradiol-17β, ovulation rate and reduced duration to estrus and preovulatory gonadotropin release after PG. Injection of 50 mg FSH-P increased plasma estradiol-17β and ovulation rate compared to injection of 32 mg FSH-P.</abstract><cop>United States</cop><pub>Elsevier Inc</pub><pmid>16725753</pmid><doi>10.1016/0093-691X(82)90009-7</doi><tpages>13</tpages></addata></record> |
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| language | eng |
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| source | Elsevier ScienceDirect Journals |
| title | Effect of exogenous FSH on estrus, ovulation and endogenous hormone release in dairy cows |
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