Pituitary concentrations of gonadotropins and receptors for GnRH in suckled beef cows at various intervals after calving
Mature beef cows were slaughtered at 5 (n = 6), 10 (n = 6), 20 (n = 6) or 30 (n = 5) d after calving to identify endocrine events that may affect the duration of postpartum anestrus. Additional cows (n = 6) were slaughtered 12 to 14 d after their first postpartum estrus (luteal phase cows). Anterior...
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| Veröffentlicht in: | Journal of animal science 1985-01, Vol.60 (1), p.285-293 |
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| creator | Moss, G.E Parfet, J.R Marvin, C.A Allrich, R.D Diekman, M.A |
| description | Mature beef cows were slaughtered at 5 (n = 6), 10 (n = 6), 20 (n = 6) or 30 (n = 5) d after calving to identify endocrine events that may affect the duration of postpartum anestrus. Additional cows (n = 6) were slaughtered 12 to 14 d after their first postpartum estrus (luteal phase cows). Anterior pituitary concentrations of luteinizing hormone (LH) were low at d 5 (383 +/- 69 micrograms/g), averaged 445 +/- 103 and 682 +/- 207 micrograms/g at d 10 and 20, respectively, and were elevated (P less than .05) by d 30 (1,097 +/- 174 micrograms) to a concentration similar to luteal phase cows (1,208 +/- 148 micrograms/g). Concentrations of follicle-stimulating hormone (FSH) averaged 12.4 +/- 1.1, 9.6 +/- 2, 8.6 +/- 1.8 and 7.4 +/- 3.3 mg/g at d 5, 10, 20 and 30, respectively. Affinity (1.6 +/- .2 X 10(9) M-1) of anterior pituitary receptors for the GnRH (gonadotropin-releasing hormone) analog (DAla6; des-Gly10, [D-Ala6]-LH-RH ethylamide) and weights (2.1 +/- .1 g) of the anterior pituitaries did not differ among groups (P greater than .05). Number of receptors for GnRH averaged 37 +/- 7, 39 +/- 9, 25 +/- 5 and 23 +/- 5 X 10(-14) M/mg protein at d 5, 10, 20 and 30, respectively. Anterior pituitaries from luteal phase cows contained 22 +/- 2 X 10(-14) M/mg protein of receptors for GnRH. |
| doi_str_mv | 10.2527/jas1985.601285x |
| format | Article |
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Additional cows (n = 6) were slaughtered 12 to 14 d after their first postpartum estrus (luteal phase cows). Anterior pituitary concentrations of luteinizing hormone (LH) were low at d 5 (383 +/- 69 micrograms/g), averaged 445 +/- 103 and 682 +/- 207 micrograms/g at d 10 and 20, respectively, and were elevated (P less than .05) by d 30 (1,097 +/- 174 micrograms) to a concentration similar to luteal phase cows (1,208 +/- 148 micrograms/g). Concentrations of follicle-stimulating hormone (FSH) averaged 12.4 +/- 1.1, 9.6 +/- 2, 8.6 +/- 1.8 and 7.4 +/- 3.3 mg/g at d 5, 10, 20 and 30, respectively. Affinity (1.6 +/- .2 X 10(9) M-1) of anterior pituitary receptors for the GnRH (gonadotropin-releasing hormone) analog (DAla6; des-Gly10, [D-Ala6]-LH-RH ethylamide) and weights (2.1 +/- .1 g) of the anterior pituitaries did not differ among groups (P greater than .05). Number of receptors for GnRH averaged 37 +/- 7, 39 +/- 9, 25 +/- 5 and 23 +/- 5 X 10(-14) M/mg protein at d 5, 10, 20 and 30, respectively. Anterior pituitaries from luteal phase cows contained 22 +/- 2 X 10(-14) M/mg protein of receptors for GnRH.</description><identifier>ISSN: 0021-8812</identifier><identifier>EISSN: 1525-3163</identifier><identifier>DOI: 10.2527/jas1985.601285x</identifier><identifier>PMID: 2982780</identifier><language>eng</language><publisher>United States: Am Soc Animal Sci</publisher><subject>Anestrus ; Animals ; BEEF CATTLE ; BOVIN DE BOUCHERIE ; Cattle - metabolism ; COWS ; DATE (DE L'EVENEMENT) ; EPOCA ; Female ; Follicle Stimulating Hormone - metabolism ; GANADO DE CARNE ; GLANDULA PITUITARIA ; GONADOTROPHINE ; GONADOTROPINAS ; GONADOTROPINS ; HYPOPHYSE ; Lactation ; Luteinizing Hormone - metabolism ; PARTO ; PARTURITION ; PITUITARY GLAND ; Pituitary Gland, Anterior - metabolism ; Postpartum Period ; Pregnancy ; Radioimmunoassay ; Receptors, Cell Surface - metabolism ; Receptors, LHRH ; Time Factors ; TIMING ; VACA ; VACHE</subject><ispartof>Journal of animal science, 1985-01, Vol.60 (1), p.285-293</ispartof><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/2982780$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Moss, G.E</creatorcontrib><creatorcontrib>Parfet, J.R</creatorcontrib><creatorcontrib>Marvin, C.A</creatorcontrib><creatorcontrib>Allrich, R.D</creatorcontrib><creatorcontrib>Diekman, M.A</creatorcontrib><title>Pituitary concentrations of gonadotropins and receptors for GnRH in suckled beef cows at various intervals after calving</title><title>Journal of animal science</title><addtitle>J Anim Sci</addtitle><description>Mature beef cows were slaughtered at 5 (n = 6), 10 (n = 6), 20 (n = 6) or 30 (n = 5) d after calving to identify endocrine events that may affect the duration of postpartum anestrus. Additional cows (n = 6) were slaughtered 12 to 14 d after their first postpartum estrus (luteal phase cows). Anterior pituitary concentrations of luteinizing hormone (LH) were low at d 5 (383 +/- 69 micrograms/g), averaged 445 +/- 103 and 682 +/- 207 micrograms/g at d 10 and 20, respectively, and were elevated (P less than .05) by d 30 (1,097 +/- 174 micrograms) to a concentration similar to luteal phase cows (1,208 +/- 148 micrograms/g). Concentrations of follicle-stimulating hormone (FSH) averaged 12.4 +/- 1.1, 9.6 +/- 2, 8.6 +/- 1.8 and 7.4 +/- 3.3 mg/g at d 5, 10, 20 and 30, respectively. Affinity (1.6 +/- .2 X 10(9) M-1) of anterior pituitary receptors for the GnRH (gonadotropin-releasing hormone) analog (DAla6; des-Gly10, [D-Ala6]-LH-RH ethylamide) and weights (2.1 +/- .1 g) of the anterior pituitaries did not differ among groups (P greater than .05). Number of receptors for GnRH averaged 37 +/- 7, 39 +/- 9, 25 +/- 5 and 23 +/- 5 X 10(-14) M/mg protein at d 5, 10, 20 and 30, respectively. Anterior pituitaries from luteal phase cows contained 22 +/- 2 X 10(-14) M/mg protein of receptors for GnRH.</description><subject>Anestrus</subject><subject>Animals</subject><subject>BEEF CATTLE</subject><subject>BOVIN DE BOUCHERIE</subject><subject>Cattle - metabolism</subject><subject>COWS</subject><subject>DATE (DE L'EVENEMENT)</subject><subject>EPOCA</subject><subject>Female</subject><subject>Follicle Stimulating Hormone - metabolism</subject><subject>GANADO DE CARNE</subject><subject>GLANDULA PITUITARIA</subject><subject>GONADOTROPHINE</subject><subject>GONADOTROPINAS</subject><subject>GONADOTROPINS</subject><subject>HYPOPHYSE</subject><subject>Lactation</subject><subject>Luteinizing Hormone - metabolism</subject><subject>PARTO</subject><subject>PARTURITION</subject><subject>PITUITARY GLAND</subject><subject>Pituitary Gland, Anterior - metabolism</subject><subject>Postpartum Period</subject><subject>Pregnancy</subject><subject>Radioimmunoassay</subject><subject>Receptors, Cell Surface - metabolism</subject><subject>Receptors, LHRH</subject><subject>Time Factors</subject><subject>TIMING</subject><subject>VACA</subject><subject>VACHE</subject><issn>0021-8812</issn><issn>1525-3163</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1985</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNotkd1LHDEUxUOp6Gr7XCgIealvY_MxmWQei7QqCEpbn8OdfKzR2WRNMqv97xvYfbqXc35cLucg9IWSSyaY_P4MhY5KXA6EMiXeP6AVFUx0nA78I1oRwminFGUn6LSUZ9IgMYpjdMxGxaQiK_T-EOoSKuR_2KRoXKwZakix4OTxOkWwqea0DU2AaHF2xm1rygX7lPF1_H2DQ8RlMS-zs3hyzrczb42teAc5pKU0v7q8g7mJvm3YwLwLcf0JHfkmus-HeYYef_38e3XT3d1f3179uOs8laR2QISnvbQeeiq5nIixbJpGpVgPPVdCGDDCKks8J9L1oOikuJHcUgA6yp6foYv93W1Or4srVW9CMW6eIbr2npZDC4kw2cDzA7hMG2f1NodNi0Ufomr-t73_FNZPbyE7XTYwz42murUwEE11q6BxX_ech6RhnUPRj3_UQIZeKv4fCO2C6A</recordid><startdate>198501</startdate><enddate>198501</enddate><creator>Moss, G.E</creator><creator>Parfet, J.R</creator><creator>Marvin, C.A</creator><creator>Allrich, R.D</creator><creator>Diekman, M.A</creator><general>Am Soc Animal Sci</general><scope>FBQ</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>7X8</scope></search><sort><creationdate>198501</creationdate><title>Pituitary concentrations of gonadotropins and receptors for GnRH in suckled beef cows at various intervals after calving</title><author>Moss, G.E ; Parfet, J.R ; Marvin, C.A ; Allrich, R.D ; Diekman, M.A</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-f170t-a05f147dfa41737b0cd2bb98824a43855cac5d8d0f307e4a81b83c73d1aa19743</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1985</creationdate><topic>Anestrus</topic><topic>Animals</topic><topic>BEEF CATTLE</topic><topic>BOVIN DE BOUCHERIE</topic><topic>Cattle - metabolism</topic><topic>COWS</topic><topic>DATE (DE L'EVENEMENT)</topic><topic>EPOCA</topic><topic>Female</topic><topic>Follicle Stimulating Hormone - metabolism</topic><topic>GANADO DE CARNE</topic><topic>GLANDULA PITUITARIA</topic><topic>GONADOTROPHINE</topic><topic>GONADOTROPINAS</topic><topic>GONADOTROPINS</topic><topic>HYPOPHYSE</topic><topic>Lactation</topic><topic>Luteinizing Hormone - metabolism</topic><topic>PARTO</topic><topic>PARTURITION</topic><topic>PITUITARY GLAND</topic><topic>Pituitary Gland, Anterior - metabolism</topic><topic>Postpartum Period</topic><topic>Pregnancy</topic><topic>Radioimmunoassay</topic><topic>Receptors, Cell Surface - metabolism</topic><topic>Receptors, LHRH</topic><topic>Time Factors</topic><topic>TIMING</topic><topic>VACA</topic><topic>VACHE</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Moss, G.E</creatorcontrib><creatorcontrib>Parfet, J.R</creatorcontrib><creatorcontrib>Marvin, C.A</creatorcontrib><creatorcontrib>Allrich, R.D</creatorcontrib><creatorcontrib>Diekman, M.A</creatorcontrib><collection>AGRIS</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>MEDLINE - Academic</collection><jtitle>Journal of animal science</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Moss, G.E</au><au>Parfet, J.R</au><au>Marvin, C.A</au><au>Allrich, R.D</au><au>Diekman, M.A</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Pituitary concentrations of gonadotropins and receptors for GnRH in suckled beef cows at various intervals after calving</atitle><jtitle>Journal of animal science</jtitle><addtitle>J Anim Sci</addtitle><date>1985-01</date><risdate>1985</risdate><volume>60</volume><issue>1</issue><spage>285</spage><epage>293</epage><pages>285-293</pages><issn>0021-8812</issn><eissn>1525-3163</eissn><abstract>Mature beef cows were slaughtered at 5 (n = 6), 10 (n = 6), 20 (n = 6) or 30 (n = 5) d after calving to identify endocrine events that may affect the duration of postpartum anestrus. Additional cows (n = 6) were slaughtered 12 to 14 d after their first postpartum estrus (luteal phase cows). Anterior pituitary concentrations of luteinizing hormone (LH) were low at d 5 (383 +/- 69 micrograms/g), averaged 445 +/- 103 and 682 +/- 207 micrograms/g at d 10 and 20, respectively, and were elevated (P less than .05) by d 30 (1,097 +/- 174 micrograms) to a concentration similar to luteal phase cows (1,208 +/- 148 micrograms/g). Concentrations of follicle-stimulating hormone (FSH) averaged 12.4 +/- 1.1, 9.6 +/- 2, 8.6 +/- 1.8 and 7.4 +/- 3.3 mg/g at d 5, 10, 20 and 30, respectively. Affinity (1.6 +/- .2 X 10(9) M-1) of anterior pituitary receptors for the GnRH (gonadotropin-releasing hormone) analog (DAla6; des-Gly10, [D-Ala6]-LH-RH ethylamide) and weights (2.1 +/- .1 g) of the anterior pituitaries did not differ among groups (P greater than .05). Number of receptors for GnRH averaged 37 +/- 7, 39 +/- 9, 25 +/- 5 and 23 +/- 5 X 10(-14) M/mg protein at d 5, 10, 20 and 30, respectively. Anterior pituitaries from luteal phase cows contained 22 +/- 2 X 10(-14) M/mg protein of receptors for GnRH.</abstract><cop>United States</cop><pub>Am Soc Animal Sci</pub><pmid>2982780</pmid><doi>10.2527/jas1985.601285x</doi><tpages>9</tpages></addata></record> |
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| subjects | Anestrus Animals BEEF CATTLE BOVIN DE BOUCHERIE Cattle - metabolism COWS DATE (DE L'EVENEMENT) EPOCA Female Follicle Stimulating Hormone - metabolism GANADO DE CARNE GLANDULA PITUITARIA GONADOTROPHINE GONADOTROPINAS GONADOTROPINS HYPOPHYSE Lactation Luteinizing Hormone - metabolism PARTO PARTURITION PITUITARY GLAND Pituitary Gland, Anterior - metabolism Postpartum Period Pregnancy Radioimmunoassay Receptors, Cell Surface - metabolism Receptors, LHRH Time Factors TIMING VACA VACHE |
| title | Pituitary concentrations of gonadotropins and receptors for GnRH in suckled beef cows at various intervals after calving |
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