Ovarian and endocrine characteristics during an estrous cycle in Angus, Brahman, and Senepol cows in a subtropical environment
To determine breed differences in ovarian function and endocrine secretion, daily rectal ultrasonography was conducted on multiparous lactating Angus (temperate Bos taurus; n = 12), Brahman (tropical Bos indicus; n = 12), and Senepol (tropical Bos taurus; n = 12) cows during an estrous cycle in summ...
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| creator | Alvarez, P Spicer, L. J Chase, C. C., Jr Payton, M. E Hamilton, T. D Stewart, R. E Hammond, A. C Olson, T. A Wettemann, R. P |
| description | To determine breed differences in ovarian function and endocrine secretion, daily rectal ultrasonography was conducted on multiparous lactating Angus (temperate Bos taurus; n = 12), Brahman (tropical Bos indicus; n = 12), and Senepol (tropical Bos taurus; n = 12) cows during an estrous cycle in summer. Blood was collected daily to quantify plasma concentrations of FSH, LH, progesterone, estradiol, GH, insulin-like growth factor (IGF)-I, IGF-II, IGF binding proteins (IGFBP), insulin, glucose, and plasma urea nitrogen (PUN). Numbers of small (2 to 5 mm), medium (6 to 8 mm), and large follicles (> or = 9 mm) were greater (P < .05) in Brahman than in Angus and(or) Senepol cows. Length of the estrous cycle (SEM = .6 d) was similar (P > .10) among Senepol (20.4 d), Angus (19.5 d), and Brahman (19.7 d) cows. Senepol cows had greater (P < .05) diameters of the corpus luteum (CL) and a delayed regression of the CL as compared with Angus cows. The secondary surge of FSH (between d 1 and 2; d 0 = estrus) was greater in Angus than Brahman or Senepol cows (breed x day, P < .05). Between d 2 and 14 of the estrous cycle, concentrations of progesterone, LH, IGF-II, and binding activities of IGFBP-3, IGFBP-2, and the 27- to 29-kDa IGFBP in plasma did not differ (P > .10) among breeds. Concentrations of GH, IGF-I, insulin, and PUN were greater (P < .001) and binding activities of the 22-kDa and 20-kDa IGFBP tended (P < .10) to be greater in plasma of Brahman than in Angus or Senepol cows. Plasma glucose concentrations were greater (P < .05) in Senepol than in Brahman or Angus cows. In conclusion, Brahman (Bos indicus) and Senepol cows (tropical Bos taurus) had greater numbers of follicles in all size categories and greater diameter of CL than Angus (temperate Bos taurus) cows. These ovarian differences may be due to changes in the pattern of secretion of FSH, insulin, IGF-I, and GH but not LH, IGF-II, or IGFBP-2 or -3. |
| doi_str_mv | 10.2527/2000.7851291x |
| format | Article |
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J ; Chase, C. C., Jr ; Payton, M. E ; Hamilton, T. D ; Stewart, R. E ; Hammond, A. C ; Olson, T. A ; Wettemann, R. P</creator><creatorcontrib>Alvarez, P ; Spicer, L. J ; Chase, C. C., Jr ; Payton, M. E ; Hamilton, T. D ; Stewart, R. E ; Hammond, A. C ; Olson, T. A ; Wettemann, R. P</creatorcontrib><description><![CDATA[To determine breed differences in ovarian function and endocrine secretion, daily rectal ultrasonography was conducted on multiparous lactating Angus (temperate Bos taurus; n = 12), Brahman (tropical Bos indicus; n = 12), and Senepol (tropical Bos taurus; n = 12) cows during an estrous cycle in summer. Blood was collected daily to quantify plasma concentrations of FSH, LH, progesterone, estradiol, GH, insulin-like growth factor (IGF)-I, IGF-II, IGF binding proteins (IGFBP), insulin, glucose, and plasma urea nitrogen (PUN). Numbers of small (2 to 5 mm), medium (6 to 8 mm), and large follicles (> or = 9 mm) were greater (P < .05) in Brahman than in Angus and(or) Senepol cows. Length of the estrous cycle (SEM = .6 d) was similar (P > .10) among Senepol (20.4 d), Angus (19.5 d), and Brahman (19.7 d) cows. Senepol cows had greater (P < .05) diameters of the corpus luteum (CL) and a delayed regression of the CL as compared with Angus cows. The secondary surge of FSH (between d 1 and 2; d 0 = estrus) was greater in Angus than Brahman or Senepol cows (breed x day, P < .05). Between d 2 and 14 of the estrous cycle, concentrations of progesterone, LH, IGF-II, and binding activities of IGFBP-3, IGFBP-2, and the 27- to 29-kDa IGFBP in plasma did not differ (P > .10) among breeds. Concentrations of GH, IGF-I, insulin, and PUN were greater (P < .001) and binding activities of the 22-kDa and 20-kDa IGFBP tended (P < .10) to be greater in plasma of Brahman than in Angus or Senepol cows. Plasma glucose concentrations were greater (P < .05) in Senepol than in Brahman or Angus cows. In conclusion, Brahman (Bos indicus) and Senepol cows (tropical Bos taurus) had greater numbers of follicles in all size categories and greater diameter of CL than Angus (temperate Bos taurus) cows. These ovarian differences may be due to changes in the pattern of secretion of FSH, insulin, IGF-I, and GH but not LH, IGF-II, or IGFBP-2 or -3.]]></description><identifier>ISSN: 0021-8812</identifier><identifier>EISSN: 1525-3163</identifier><identifier>EISSN: 0021-8812</identifier><identifier>DOI: 10.2527/2000.7851291x</identifier><identifier>PMID: 10834585</identifier><language>eng</language><publisher>Savoy, IL: Am Soc Animal Sci</publisher><subject>Animal productions ; Animal reproduction ; Animals ; Biological and medical sciences ; Cattle ; Cattle - physiology ; Estradiol - blood ; Estrus - physiology ; Estrus Synchronization ; Female ; Follicle Stimulating Hormone - blood ; Fundamental and applied biological sciences. Psychology ; Growth Hormone - blood ; Hormones ; Luteinizing Hormone - blood ; Ovarian Follicle - diagnostic imaging ; Ovary - physiology ; Proteins ; Terrestrial animal productions ; Tropical Climate ; Ultrasonography ; Vertebrates</subject><ispartof>Journal of animal science, 2000-05, Vol.78 (5), p.1291-1302</ispartof><rights>2000 INIST-CNRS</rights><rights>Copyright American Society of Animal Science May 2000</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c442t-d0476dc6db18c13409dac4a2d0f273cee22db1ced0cd7be925dbba2a59fb13e43</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=1392956$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/10834585$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Alvarez, P</creatorcontrib><creatorcontrib>Spicer, L. J</creatorcontrib><creatorcontrib>Chase, C. C., Jr</creatorcontrib><creatorcontrib>Payton, M. E</creatorcontrib><creatorcontrib>Hamilton, T. D</creatorcontrib><creatorcontrib>Stewart, R. E</creatorcontrib><creatorcontrib>Hammond, A. C</creatorcontrib><creatorcontrib>Olson, T. A</creatorcontrib><creatorcontrib>Wettemann, R. P</creatorcontrib><title>Ovarian and endocrine characteristics during an estrous cycle in Angus, Brahman, and Senepol cows in a subtropical environment</title><title>Journal of animal science</title><addtitle>J Anim Sci</addtitle><description><![CDATA[To determine breed differences in ovarian function and endocrine secretion, daily rectal ultrasonography was conducted on multiparous lactating Angus (temperate Bos taurus; n = 12), Brahman (tropical Bos indicus; n = 12), and Senepol (tropical Bos taurus; n = 12) cows during an estrous cycle in summer. Blood was collected daily to quantify plasma concentrations of FSH, LH, progesterone, estradiol, GH, insulin-like growth factor (IGF)-I, IGF-II, IGF binding proteins (IGFBP), insulin, glucose, and plasma urea nitrogen (PUN). Numbers of small (2 to 5 mm), medium (6 to 8 mm), and large follicles (> or = 9 mm) were greater (P < .05) in Brahman than in Angus and(or) Senepol cows. Length of the estrous cycle (SEM = .6 d) was similar (P > .10) among Senepol (20.4 d), Angus (19.5 d), and Brahman (19.7 d) cows. Senepol cows had greater (P < .05) diameters of the corpus luteum (CL) and a delayed regression of the CL as compared with Angus cows. The secondary surge of FSH (between d 1 and 2; d 0 = estrus) was greater in Angus than Brahman or Senepol cows (breed x day, P < .05). Between d 2 and 14 of the estrous cycle, concentrations of progesterone, LH, IGF-II, and binding activities of IGFBP-3, IGFBP-2, and the 27- to 29-kDa IGFBP in plasma did not differ (P > .10) among breeds. Concentrations of GH, IGF-I, insulin, and PUN were greater (P < .001) and binding activities of the 22-kDa and 20-kDa IGFBP tended (P < .10) to be greater in plasma of Brahman than in Angus or Senepol cows. Plasma glucose concentrations were greater (P < .05) in Senepol than in Brahman or Angus cows. In conclusion, Brahman (Bos indicus) and Senepol cows (tropical Bos taurus) had greater numbers of follicles in all size categories and greater diameter of CL than Angus (temperate Bos taurus) cows. These ovarian differences may be due to changes in the pattern of secretion of FSH, insulin, IGF-I, and GH but not LH, IGF-II, or IGFBP-2 or -3.]]></description><subject>Animal productions</subject><subject>Animal reproduction</subject><subject>Animals</subject><subject>Biological and medical sciences</subject><subject>Cattle</subject><subject>Cattle - physiology</subject><subject>Estradiol - blood</subject><subject>Estrus - physiology</subject><subject>Estrus Synchronization</subject><subject>Female</subject><subject>Follicle Stimulating Hormone - blood</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Growth Hormone - blood</subject><subject>Hormones</subject><subject>Luteinizing Hormone - blood</subject><subject>Ovarian Follicle - diagnostic imaging</subject><subject>Ovary - physiology</subject><subject>Proteins</subject><subject>Terrestrial animal productions</subject><subject>Tropical Climate</subject><subject>Ultrasonography</subject><subject>Vertebrates</subject><issn>0021-8812</issn><issn>1525-3163</issn><issn>0021-8812</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2000</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><sourceid>8G5</sourceid><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><sourceid>GUQSH</sourceid><sourceid>M2O</sourceid><recordid>eNpd0UFvFCEUB3BiNHatHr0aYoynTgUGFuZYG6tNmvTQeiZv4M0umxlmhZnWXvzsst01bTyRwI_3ePwJec_ZqVBCfxGMsVNtFBcN__2CLLgSqqr5sn5JFowJXhnDxRF5k_OGMS5Uo16TI85MLZVRC_Ln-g5SgEgheorRjy6FiNStIYGbMIU8BZepn8v2qiCKeUrjnKl7cD3SEOlZXM35hH5NsB4gnjwWusGI27GnbrzPOwM0z225tw0O-tLmLqQxDhint-RVB33Gd4f1mPy8-HZ7_qO6uv5-eX52VTkpxVR5JvXSu6VvuXG8lqzx4CQIzzqha4coRDly6JnzusVGKN-2IEA1XctrlPUx-byvu03jr7nMYIeQHfY9RCzTWM251NLwAj_-BzfjnGJ5mxXcFGWMLqjaI5fGnBN2dpvCAOnBcmZ3qdhdKvZfKsV_OBSd2wH9M72PoYBPBwC5_FCXILqQn1zdiEYtn6ZYh9X6PiS0eYC-L1W53UDWxiq761j_Bfozo1o</recordid><startdate>20000501</startdate><enddate>20000501</enddate><creator>Alvarez, P</creator><creator>Spicer, L. 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J ; Chase, C. C., Jr ; Payton, M. E ; Hamilton, T. D ; Stewart, R. E ; Hammond, A. C ; Olson, T. A ; Wettemann, R. P</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c442t-d0476dc6db18c13409dac4a2d0f273cee22db1ced0cd7be925dbba2a59fb13e43</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2000</creationdate><topic>Animal productions</topic><topic>Animal reproduction</topic><topic>Animals</topic><topic>Biological and medical sciences</topic><topic>Cattle</topic><topic>Cattle - physiology</topic><topic>Estradiol - blood</topic><topic>Estrus - physiology</topic><topic>Estrus Synchronization</topic><topic>Female</topic><topic>Follicle Stimulating Hormone - blood</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>Growth Hormone - blood</topic><topic>Hormones</topic><topic>Luteinizing Hormone - blood</topic><topic>Ovarian Follicle - diagnostic imaging</topic><topic>Ovary - physiology</topic><topic>Proteins</topic><topic>Terrestrial animal productions</topic><topic>Tropical Climate</topic><topic>Ultrasonography</topic><topic>Vertebrates</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Alvarez, P</creatorcontrib><creatorcontrib>Spicer, L. J</creatorcontrib><creatorcontrib>Chase, C. C., Jr</creatorcontrib><creatorcontrib>Payton, M. E</creatorcontrib><creatorcontrib>Hamilton, T. D</creatorcontrib><creatorcontrib>Stewart, R. E</creatorcontrib><creatorcontrib>Hammond, A. C</creatorcontrib><creatorcontrib>Olson, T. A</creatorcontrib><creatorcontrib>Wettemann, R. 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J</au><au>Chase, C. C., Jr</au><au>Payton, M. E</au><au>Hamilton, T. D</au><au>Stewart, R. E</au><au>Hammond, A. C</au><au>Olson, T. A</au><au>Wettemann, R. P</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Ovarian and endocrine characteristics during an estrous cycle in Angus, Brahman, and Senepol cows in a subtropical environment</atitle><jtitle>Journal of animal science</jtitle><addtitle>J Anim Sci</addtitle><date>2000-05-01</date><risdate>2000</risdate><volume>78</volume><issue>5</issue><spage>1291</spage><epage>1302</epage><pages>1291-1302</pages><issn>0021-8812</issn><eissn>1525-3163</eissn><eissn>0021-8812</eissn><abstract><![CDATA[To determine breed differences in ovarian function and endocrine secretion, daily rectal ultrasonography was conducted on multiparous lactating Angus (temperate Bos taurus; n = 12), Brahman (tropical Bos indicus; n = 12), and Senepol (tropical Bos taurus; n = 12) cows during an estrous cycle in summer. Blood was collected daily to quantify plasma concentrations of FSH, LH, progesterone, estradiol, GH, insulin-like growth factor (IGF)-I, IGF-II, IGF binding proteins (IGFBP), insulin, glucose, and plasma urea nitrogen (PUN). Numbers of small (2 to 5 mm), medium (6 to 8 mm), and large follicles (> or = 9 mm) were greater (P < .05) in Brahman than in Angus and(or) Senepol cows. Length of the estrous cycle (SEM = .6 d) was similar (P > .10) among Senepol (20.4 d), Angus (19.5 d), and Brahman (19.7 d) cows. Senepol cows had greater (P < .05) diameters of the corpus luteum (CL) and a delayed regression of the CL as compared with Angus cows. The secondary surge of FSH (between d 1 and 2; d 0 = estrus) was greater in Angus than Brahman or Senepol cows (breed x day, P < .05). Between d 2 and 14 of the estrous cycle, concentrations of progesterone, LH, IGF-II, and binding activities of IGFBP-3, IGFBP-2, and the 27- to 29-kDa IGFBP in plasma did not differ (P > .10) among breeds. Concentrations of GH, IGF-I, insulin, and PUN were greater (P < .001) and binding activities of the 22-kDa and 20-kDa IGFBP tended (P < .10) to be greater in plasma of Brahman than in Angus or Senepol cows. Plasma glucose concentrations were greater (P < .05) in Senepol than in Brahman or Angus cows. In conclusion, Brahman (Bos indicus) and Senepol cows (tropical Bos taurus) had greater numbers of follicles in all size categories and greater diameter of CL than Angus (temperate Bos taurus) cows. These ovarian differences may be due to changes in the pattern of secretion of FSH, insulin, IGF-I, and GH but not LH, IGF-II, or IGFBP-2 or -3.]]></abstract><cop>Savoy, IL</cop><pub>Am Soc Animal Sci</pub><pmid>10834585</pmid><doi>10.2527/2000.7851291x</doi><tpages>12</tpages></addata></record> |
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| ispartof | Journal of animal science, 2000-05, Vol.78 (5), p.1291-1302 |
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| source | MEDLINE; Oxford University Press Journals All Titles (1996-Current) |
| subjects | Animal productions Animal reproduction Animals Biological and medical sciences Cattle Cattle - physiology Estradiol - blood Estrus - physiology Estrus Synchronization Female Follicle Stimulating Hormone - blood Fundamental and applied biological sciences. Psychology Growth Hormone - blood Hormones Luteinizing Hormone - blood Ovarian Follicle - diagnostic imaging Ovary - physiology Proteins Terrestrial animal productions Tropical Climate Ultrasonography Vertebrates |
| title | Ovarian and endocrine characteristics during an estrous cycle in Angus, Brahman, and Senepol cows in a subtropical environment |
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