Anovulation in postpartum suckled beef cows. I. Associations among size and numbers of ovarian follicles, uterine involution, and hormones in serum and follicular fluid

Changes in sizes and numbers of ovarian antral follicles, uterine size and weight, serum hormones, and frequency and duration of suckling were examined during the postpartum anovulatory period in primiparous, suckled beef cows. Twenty-one anovulatory, suckled cows (n = 4 to 6/d) were slaughtered on...

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Veröffentlicht in:Journal of animal science 1986-03, Vol.62 (3), p.734-741
Hauptverfasser: Spicer, L.J, Leung, K, Convey, E.M, Gunther, J, Short, R.E, Tucker, H.A
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container_issue 3
container_start_page 734
container_title Journal of animal science
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creator Spicer, L.J
Leung, K
Convey, E.M
Gunther, J
Short, R.E
Tucker, H.A
description Changes in sizes and numbers of ovarian antral follicles, uterine size and weight, serum hormones, and frequency and duration of suckling were examined during the postpartum anovulatory period in primiparous, suckled beef cows. Twenty-one anovulatory, suckled cows (n = 4 to 6/d) were slaughtered on d 7, 14, 28 and 42 to 56 after parturition. In addition, a total of 11 postpartum cows that had begun cyclic activity were slaughtered on d 28, 42 or 56. Blood was collected at 10-min intervals for 6 h 1 d before slaughter for measurement of prolactin, cortisol and progesterone in serum. Numbers of medium (4.0 to 7.9 mm) follicles increased fourfold (P less than .05) between d 7 and 42 to 56 in anovulatory cows, whereas numbers of small (1.0 to 3.9 mm) and large (greater than or equal to 8.0 mm) follicles did not change (P greater than .10). Uterine involution was complete by d 28. In anovulatory cows, a higher (P less than .05) proportion of largest (but not second-largest) follicles was opposite the ovary containing the corpus albicans from pregnancy (CAP). In addition, 90% of these largest follicles opposite the CAP had concentrations of estradiol greater than progesterone. In cyclic cows, however, first ovulations occurred with equal frequency on either ovary. Concentrations of prolactin or cortisol in serum or duration of suckling were not associated with changes in uterine or ovarian measurements. In conclusion, growth and function of the largest (but not second-largest) follicle were reduced when located on the ovary containing the CAP.
doi_str_mv 10.2527/jas1986.623734x
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I. Associations among size and numbers of ovarian follicles, uterine involution, and hormones in serum and follicular fluid</title><source>MEDLINE</source><source>Alma/SFX Local Collection</source><creator>Spicer, L.J ; Leung, K ; Convey, E.M ; Gunther, J ; Short, R.E ; Tucker, H.A</creator><creatorcontrib>Spicer, L.J ; Leung, K ; Convey, E.M ; Gunther, J ; Short, R.E ; Tucker, H.A</creatorcontrib><description>Changes in sizes and numbers of ovarian antral follicles, uterine size and weight, serum hormones, and frequency and duration of suckling were examined during the postpartum anovulatory period in primiparous, suckled beef cows. Twenty-one anovulatory, suckled cows (n = 4 to 6/d) were slaughtered on d 7, 14, 28 and 42 to 56 after parturition. In addition, a total of 11 postpartum cows that had begun cyclic activity were slaughtered on d 28, 42 or 56. Blood was collected at 10-min intervals for 6 h 1 d before slaughter for measurement of prolactin, cortisol and progesterone in serum. Numbers of medium (4.0 to 7.9 mm) follicles increased fourfold (P less than .05) between d 7 and 42 to 56 in anovulatory cows, whereas numbers of small (1.0 to 3.9 mm) and large (greater than or equal to 8.0 mm) follicles did not change (P greater than .10). Uterine involution was complete by d 28. In anovulatory cows, a higher (P less than .05) proportion of largest (but not second-largest) follicles was opposite the ovary containing the corpus albicans from pregnancy (CAP). In addition, 90% of these largest follicles opposite the CAP had concentrations of estradiol greater than progesterone. In cyclic cows, however, first ovulations occurred with equal frequency on either ovary. Concentrations of prolactin or cortisol in serum or duration of suckling were not associated with changes in uterine or ovarian measurements. 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I. Associations among size and numbers of ovarian follicles, uterine involution, and hormones in serum and follicular fluid</title><title>Journal of animal science</title><addtitle>J Anim Sci</addtitle><description>Changes in sizes and numbers of ovarian antral follicles, uterine size and weight, serum hormones, and frequency and duration of suckling were examined during the postpartum anovulatory period in primiparous, suckled beef cows. Twenty-one anovulatory, suckled cows (n = 4 to 6/d) were slaughtered on d 7, 14, 28 and 42 to 56 after parturition. In addition, a total of 11 postpartum cows that had begun cyclic activity were slaughtered on d 28, 42 or 56. Blood was collected at 10-min intervals for 6 h 1 d before slaughter for measurement of prolactin, cortisol and progesterone in serum. 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In conclusion, growth and function of the largest (but not second-largest) follicle were reduced when located on the ovary containing the CAP.</description><subject>ALLAITEMENT</subject><subject>Animals</subject><subject>Anovulation - blood</subject><subject>Anovulation - metabolism</subject><subject>Anovulation - physiopathology</subject><subject>Anovulation - veterinary</subject><subject>BEEF CATTLE</subject><subject>BOVIN DE BOUCHERIE</subject><subject>Cattle - physiology</subject><subject>Cattle Diseases - blood</subject><subject>Cattle Diseases - metabolism</subject><subject>Cattle Diseases - physiopathology</subject><subject>COWS</subject><subject>ENFERMEDADES UTERINAS</subject><subject>Estradiol - blood</subject><subject>Estradiol - metabolism</subject><subject>ESTROGENOS</subject><subject>Female</subject><subject>GANADO DE CARNE</subject><subject>GRAAFIAN FOLLICLES</subject><subject>LACTANCIA</subject><subject>MALADIE DE L'UTERUS</subject><subject>OESTROGENE</subject><subject>OESTROGENS</subject><subject>Ovarian Follicle - metabolism</subject><subject>Ovarian Follicle - physiology</subject><subject>Postpartum Period</subject><subject>Pregnancy</subject><subject>Pregnancy, Animal</subject><subject>PROGESTERONA</subject><subject>PROGESTERONE</subject><subject>Progesterone - blood</subject><subject>Progesterone - metabolism</subject><subject>PUERPERIO</subject><subject>PUERPERIUM</subject><subject>SUCKLING</subject><subject>UTERINE DISEASES</subject><subject>Uterus - physiology</subject><subject>VACA</subject><subject>VACHE</subject><issn>0021-8812</issn><issn>1525-3163</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1986</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNo9kU9v1DAUxC0EKkvhjISE5Et7arb-kzjJcVVRqFSJA_RsOcnLrosTL37xFvhEfEycJuJkyfObmScNIe8524pClNePBnldqa0SspT5rxdkwwtRZJIr-ZJsGBM8qyouXpM3iI-McVHUxRk5k2WSSrYhf3ejP0VnJutHakd69DgdTZjiQDG2Pxx0tAHoaeufcEvvtnSH6Fv7zCM1gx_3FO0foGbs6BiHBgJS31N_MsGakfbeOds6wCsaJwh2hNRy8i7OAVfProMPKQZwrkcIqXn-XYzpskB7F233lrzqjUN4t77n5OH20_ebL9n91893N7v7rJVCTJnMK9NCy6WppGoKUAWXrOa8NwI6kTd1aTgrZdGVwGSf57XiQlZgVCO65CvkOblcco_B_4yAkx4stuCcGcFH1KWqGOd8Bq8XsA0eMUCvj8EOJvzWnOl5G71uo9dtkuPjGh2bAbr__DpG0i8W_WD3hycbQONgnEs0n7OU0FKnoMR9WLjeeG32waJ--FYpWeU8l_8ArbSjTg</recordid><startdate>198603</startdate><enddate>198603</enddate><creator>Spicer, L.J</creator><creator>Leung, K</creator><creator>Convey, E.M</creator><creator>Gunther, J</creator><creator>Short, R.E</creator><creator>Tucker, H.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>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>198603</creationdate><title>Anovulation in postpartum suckled beef cows. I. Associations among size and numbers of ovarian follicles, uterine involution, and hormones in serum and follicular fluid</title><author>Spicer, L.J ; Leung, K ; Convey, E.M ; Gunther, J ; Short, R.E ; Tucker, H.A</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c322t-348acec13a836b5e65130911fa2ed24b97a10735d7e03f44961238ea6b2dcec53</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1986</creationdate><topic>ALLAITEMENT</topic><topic>Animals</topic><topic>Anovulation - blood</topic><topic>Anovulation - metabolism</topic><topic>Anovulation - physiopathology</topic><topic>Anovulation - veterinary</topic><topic>BEEF CATTLE</topic><topic>BOVIN DE BOUCHERIE</topic><topic>Cattle - physiology</topic><topic>Cattle Diseases - blood</topic><topic>Cattle Diseases - metabolism</topic><topic>Cattle Diseases - physiopathology</topic><topic>COWS</topic><topic>ENFERMEDADES UTERINAS</topic><topic>Estradiol - blood</topic><topic>Estradiol - metabolism</topic><topic>ESTROGENOS</topic><topic>Female</topic><topic>GANADO DE CARNE</topic><topic>GRAAFIAN FOLLICLES</topic><topic>LACTANCIA</topic><topic>MALADIE DE L'UTERUS</topic><topic>OESTROGENE</topic><topic>OESTROGENS</topic><topic>Ovarian Follicle - metabolism</topic><topic>Ovarian Follicle - physiology</topic><topic>Postpartum Period</topic><topic>Pregnancy</topic><topic>Pregnancy, Animal</topic><topic>PROGESTERONA</topic><topic>PROGESTERONE</topic><topic>Progesterone - blood</topic><topic>Progesterone - metabolism</topic><topic>PUERPERIO</topic><topic>PUERPERIUM</topic><topic>SUCKLING</topic><topic>UTERINE DISEASES</topic><topic>Uterus - physiology</topic><topic>VACA</topic><topic>VACHE</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Spicer, L.J</creatorcontrib><creatorcontrib>Leung, K</creatorcontrib><creatorcontrib>Convey, E.M</creatorcontrib><creatorcontrib>Gunther, J</creatorcontrib><creatorcontrib>Short, R.E</creatorcontrib><creatorcontrib>Tucker, H.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>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Journal of animal science</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Spicer, L.J</au><au>Leung, K</au><au>Convey, E.M</au><au>Gunther, J</au><au>Short, R.E</au><au>Tucker, H.A</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Anovulation in postpartum suckled beef cows. I. Associations among size and numbers of ovarian follicles, uterine involution, and hormones in serum and follicular fluid</atitle><jtitle>Journal of animal science</jtitle><addtitle>J Anim Sci</addtitle><date>1986-03</date><risdate>1986</risdate><volume>62</volume><issue>3</issue><spage>734</spage><epage>741</epage><pages>734-741</pages><issn>0021-8812</issn><eissn>1525-3163</eissn><abstract>Changes in sizes and numbers of ovarian antral follicles, uterine size and weight, serum hormones, and frequency and duration of suckling were examined during the postpartum anovulatory period in primiparous, suckled beef cows. Twenty-one anovulatory, suckled cows (n = 4 to 6/d) were slaughtered on d 7, 14, 28 and 42 to 56 after parturition. In addition, a total of 11 postpartum cows that had begun cyclic activity were slaughtered on d 28, 42 or 56. Blood was collected at 10-min intervals for 6 h 1 d before slaughter for measurement of prolactin, cortisol and progesterone in serum. Numbers of medium (4.0 to 7.9 mm) follicles increased fourfold (P less than .05) between d 7 and 42 to 56 in anovulatory cows, whereas numbers of small (1.0 to 3.9 mm) and large (greater than or equal to 8.0 mm) follicles did not change (P greater than .10). Uterine involution was complete by d 28. In anovulatory cows, a higher (P less than .05) proportion of largest (but not second-largest) follicles was opposite the ovary containing the corpus albicans from pregnancy (CAP). In addition, 90% of these largest follicles opposite the CAP had concentrations of estradiol greater than progesterone. In cyclic cows, however, first ovulations occurred with equal frequency on either ovary. Concentrations of prolactin or cortisol in serum or duration of suckling were not associated with changes in uterine or ovarian measurements. In conclusion, growth and function of the largest (but not second-largest) follicle were reduced when located on the ovary containing the CAP.</abstract><cop>United States</cop><pub>Am Soc Animal Sci</pub><pmid>3700270</pmid><doi>10.2527/jas1986.623734x</doi><tpages>8</tpages></addata></record>
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subjects ALLAITEMENT
Animals
Anovulation - blood
Anovulation - metabolism
Anovulation - physiopathology
Anovulation - veterinary
BEEF CATTLE
BOVIN DE BOUCHERIE
Cattle - physiology
Cattle Diseases - blood
Cattle Diseases - metabolism
Cattle Diseases - physiopathology
COWS
ENFERMEDADES UTERINAS
Estradiol - blood
Estradiol - metabolism
ESTROGENOS
Female
GANADO DE CARNE
GRAAFIAN FOLLICLES
LACTANCIA
MALADIE DE L'UTERUS
OESTROGENE
OESTROGENS
Ovarian Follicle - metabolism
Ovarian Follicle - physiology
Postpartum Period
Pregnancy
Pregnancy, Animal
PROGESTERONA
PROGESTERONE
Progesterone - blood
Progesterone - metabolism
PUERPERIO
PUERPERIUM
SUCKLING
UTERINE DISEASES
Uterus - physiology
VACA
VACHE
title Anovulation in postpartum suckled beef cows. I. Associations among size and numbers of ovarian follicles, uterine involution, and hormones in serum and follicular fluid
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