The In Vitro Developmental Competence of Oocytes from Juvenile Calves is Related to Follicular Diameter
This study investigated the relationship between follicle size (FS) and developmental competence of calf oocytes. Cumulus-oocyte-complexes (COCs) from follicles >8 (L-COCs; n=19), 4-8 (M-COCs; n=54), and 2-3 mm (S-COCs; n=155) were recovered from non-stimulated 1-4 months old dairy calves post mo...
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| Veröffentlicht in: | Journal of Reproduction and Development 2005, Vol.51(3), pp.325-332 |
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| creator | KAUFFOLD, Johannes AMER, Hussein A. H. BERGFELD, Uwe WEBER, Wolfgang SOBIRAJ, Axel |
| description | This study investigated the relationship between follicle size (FS) and developmental competence of calf oocytes. Cumulus-oocyte-complexes (COCs) from follicles >8 (L-COCs; n=19), 4-8 (M-COCs; n=54), and 2-3 mm (S-COCs; n=155) were recovered from non-stimulated 1-4 months old dairy calves post mortem and ex vivo (laparoscopy), and in parallel from slaughtered adult cows from follicles of identical size categories [> 8 (n=91); 4-8 (n=138); 2-3 mm (n=193)]. Morphologically intact COCs were subjected to in vitro maturation, fertilization, and embryo culture. Cleavage rate (CR; 46 h post-insemination=p.i.), rate of morulae/blastocysts (M/Bl; day 7 p.i.), and blastocysts (Bl; day 9 p.i.) were recorded. FS had no effect on the CR in calves. However, calf L-COCs yielded the highest rates of M/Bl and Bl compared with the two other size categories (P |
| doi_str_mv | 10.1262/jrd.17002 |
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H. ; BERGFELD, Uwe ; WEBER, Wolfgang ; SOBIRAJ, Axel</creator><creatorcontrib>KAUFFOLD, Johannes ; AMER, Hussein A. H. ; BERGFELD, Uwe ; WEBER, Wolfgang ; SOBIRAJ, Axel</creatorcontrib><description>This study investigated the relationship between follicle size (FS) and developmental competence of calf oocytes. Cumulus-oocyte-complexes (COCs) from follicles >8 (L-COCs; n=19), 4-8 (M-COCs; n=54), and 2-3 mm (S-COCs; n=155) were recovered from non-stimulated 1-4 months old dairy calves post mortem and ex vivo (laparoscopy), and in parallel from slaughtered adult cows from follicles of identical size categories [> 8 (n=91); 4-8 (n=138); 2-3 mm (n=193)]. Morphologically intact COCs were subjected to in vitro maturation, fertilization, and embryo culture. Cleavage rate (CR; 46 h post-insemination=p.i.), rate of morulae/blastocysts (M/Bl; day 7 p.i.), and blastocysts (Bl; day 9 p.i.) were recorded. FS had no effect on the CR in calves. However, calf L-COCs yielded the highest rates of M/Bl and Bl compared with the two other size categories (P<0.05). In contrast, calf S- and M-COCs gave similar rates of M/Bl, whereas the proportion of Bl was lowest for S-COCs (P<0.05). This was almost identical to findings in cows, except that the CR was highest for L-COCs and M/Bl yields were lowest for S-COCs (P<0.05). There were no differences between calf and cows with regard to CR for the respective FS categories. L-COCs from calves and cows yielded similar rates of M/Bl and Bl, whereas calf S- and M-COCs yielded lower rates of Bl than S- and M-COCs from cows and a lower rate of M/Bl when S-and M-COCs were analyzed as one group (P<0.05). Whereas the CR was similar in calves and cows, calf COCs yielded lower rates of M/Bl and Bl (P<0.05). In conclusion, the results show that the developmental competence of calf oocytes is higher in those derived from follicles larger than 8 mm, and thus are almost equally as competent as cow oocytes derived from follicles of identical size. This suggests that calf oocytes acquire developmental competence within the large follicle, potentially due to a process similar to prematuration of the oocyte in the adult cow. It is proposed that procedures that facilitate prematuration, such as "coasting" following a preceding superstimulation, might increase the developmental competence of calf oocytes.</description><identifier>ISSN: 0916-8818</identifier><identifier>EISSN: 1348-4400</identifier><identifier>DOI: 10.1262/jrd.17002</identifier><identifier>PMID: 16000866</identifier><language>eng</language><publisher>Japan: THE SOCIETY FOR REPRODUCTION AND DEVELOPMENT</publisher><subject>Age Factors ; Animals ; Blastocyst - physiology ; Calf ; Cattle - physiology ; Developmental competence ; Embryo Culture Techniques ; Female ; Fertilization in Vitro ; Follicle size ; In vitro ; Morula - physiology ; Oocyte ; Oocytes - physiology ; Ovarian Follicle - anatomy & histology ; Ovarian Follicle - physiology ; Time Factors</subject><ispartof>Journal of Reproduction and Development, 2005, Vol.51(3), pp.325-332</ispartof><rights>2005 Society for Reproduction and Development</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c546t-17140e84440dc7f7a2760e9027ef47b15a1ba4a8e38dde8b00444522d0c240e43</citedby><cites>FETCH-LOGICAL-c546t-17140e84440dc7f7a2760e9027ef47b15a1ba4a8e38dde8b00444522d0c240e43</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,864,1883,27924,27925</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/16000866$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>KAUFFOLD, Johannes</creatorcontrib><creatorcontrib>AMER, Hussein A. H.</creatorcontrib><creatorcontrib>BERGFELD, Uwe</creatorcontrib><creatorcontrib>WEBER, Wolfgang</creatorcontrib><creatorcontrib>SOBIRAJ, Axel</creatorcontrib><title>The In Vitro Developmental Competence of Oocytes from Juvenile Calves is Related to Follicular Diameter</title><title>Journal of Reproduction and Development</title><addtitle>J. Reprod. Dev.</addtitle><description>This study investigated the relationship between follicle size (FS) and developmental competence of calf oocytes. Cumulus-oocyte-complexes (COCs) from follicles >8 (L-COCs; n=19), 4-8 (M-COCs; n=54), and 2-3 mm (S-COCs; n=155) were recovered from non-stimulated 1-4 months old dairy calves post mortem and ex vivo (laparoscopy), and in parallel from slaughtered adult cows from follicles of identical size categories [> 8 (n=91); 4-8 (n=138); 2-3 mm (n=193)]. Morphologically intact COCs were subjected to in vitro maturation, fertilization, and embryo culture. Cleavage rate (CR; 46 h post-insemination=p.i.), rate of morulae/blastocysts (M/Bl; day 7 p.i.), and blastocysts (Bl; day 9 p.i.) were recorded. FS had no effect on the CR in calves. However, calf L-COCs yielded the highest rates of M/Bl and Bl compared with the two other size categories (P<0.05). In contrast, calf S- and M-COCs gave similar rates of M/Bl, whereas the proportion of Bl was lowest for S-COCs (P<0.05). This was almost identical to findings in cows, except that the CR was highest for L-COCs and M/Bl yields were lowest for S-COCs (P<0.05). There were no differences between calf and cows with regard to CR for the respective FS categories. L-COCs from calves and cows yielded similar rates of M/Bl and Bl, whereas calf S- and M-COCs yielded lower rates of Bl than S- and M-COCs from cows and a lower rate of M/Bl when S-and M-COCs were analyzed as one group (P<0.05). Whereas the CR was similar in calves and cows, calf COCs yielded lower rates of M/Bl and Bl (P<0.05). In conclusion, the results show that the developmental competence of calf oocytes is higher in those derived from follicles larger than 8 mm, and thus are almost equally as competent as cow oocytes derived from follicles of identical size. This suggests that calf oocytes acquire developmental competence within the large follicle, potentially due to a process similar to prematuration of the oocyte in the adult cow. It is proposed that procedures that facilitate prematuration, such as "coasting" following a preceding superstimulation, might increase the developmental competence of calf oocytes.</description><subject>Age Factors</subject><subject>Animals</subject><subject>Blastocyst - physiology</subject><subject>Calf</subject><subject>Cattle - physiology</subject><subject>Developmental competence</subject><subject>Embryo Culture Techniques</subject><subject>Female</subject><subject>Fertilization in Vitro</subject><subject>Follicle size</subject><subject>In vitro</subject><subject>Morula - physiology</subject><subject>Oocyte</subject><subject>Oocytes - physiology</subject><subject>Ovarian Follicle - anatomy & histology</subject><subject>Ovarian Follicle - physiology</subject><subject>Time Factors</subject><issn>0916-8818</issn><issn>1348-4400</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2005</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNpFkU1LxDAQhoMoun4c_AOSk-ChOknTNJ5E1m8EQdRryKZT7ZI2a5Iu-O-N7qKXGZh55oX3HUIOGZwyLvnZPDSnrAbgG2TCSqEKIQA2yQTOmSyUYmqH7MY4Byh5JcU22WESAJSUE_L-8oH0fqBvXQqeXuESnV_0OCTj6NT3C0w4WKS-pU_efiWMtA2-pw_jEofOIZ0at8zDLtJndCZhQ5OnN965zo7OBHrVmT5rhH2y1RoX8WDd98jrzfXL9K54fLq9n14-FrYSMhWsZgJQiWygsXVbG15LwHPgNbainrHKsJkRRmGpmgbVDCCjFecNWJ4PRblHjle6i-A_R4xJ91206JwZ0I9RSwWMZecZPFmBNvgYA7Z6EbrehC_NQP-kqnOq-jfVzB6tRcdZj80_uY4xAxcrYB6Tecc_wITUWYe_UhXT5arkL_xt7IcJGofyGyFviR8</recordid><startdate>20050601</startdate><enddate>20050601</enddate><creator>KAUFFOLD, Johannes</creator><creator>AMER, Hussein A. H.</creator><creator>BERGFELD, Uwe</creator><creator>WEBER, Wolfgang</creator><creator>SOBIRAJ, Axel</creator><general>THE SOCIETY FOR REPRODUCTION AND DEVELOPMENT</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>20050601</creationdate><title>The In Vitro Developmental Competence of Oocytes from Juvenile Calves is Related to Follicular Diameter</title><author>KAUFFOLD, Johannes ; AMER, Hussein A. H. ; BERGFELD, Uwe ; WEBER, Wolfgang ; SOBIRAJ, Axel</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c546t-17140e84440dc7f7a2760e9027ef47b15a1ba4a8e38dde8b00444522d0c240e43</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2005</creationdate><topic>Age Factors</topic><topic>Animals</topic><topic>Blastocyst - physiology</topic><topic>Calf</topic><topic>Cattle - physiology</topic><topic>Developmental competence</topic><topic>Embryo Culture Techniques</topic><topic>Female</topic><topic>Fertilization in Vitro</topic><topic>Follicle size</topic><topic>In vitro</topic><topic>Morula - physiology</topic><topic>Oocyte</topic><topic>Oocytes - physiology</topic><topic>Ovarian Follicle - anatomy & histology</topic><topic>Ovarian Follicle - physiology</topic><topic>Time Factors</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>KAUFFOLD, Johannes</creatorcontrib><creatorcontrib>AMER, Hussein A. H.</creatorcontrib><creatorcontrib>BERGFELD, Uwe</creatorcontrib><creatorcontrib>WEBER, Wolfgang</creatorcontrib><creatorcontrib>SOBIRAJ, Axel</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>Journal of Reproduction and Development</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>KAUFFOLD, Johannes</au><au>AMER, Hussein A. H.</au><au>BERGFELD, Uwe</au><au>WEBER, Wolfgang</au><au>SOBIRAJ, Axel</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>The In Vitro Developmental Competence of Oocytes from Juvenile Calves is Related to Follicular Diameter</atitle><jtitle>Journal of Reproduction and Development</jtitle><addtitle>J. Reprod. Dev.</addtitle><date>2005-06-01</date><risdate>2005</risdate><volume>51</volume><issue>3</issue><spage>325</spage><epage>332</epage><pages>325-332</pages><issn>0916-8818</issn><eissn>1348-4400</eissn><abstract>This study investigated the relationship between follicle size (FS) and developmental competence of calf oocytes. Cumulus-oocyte-complexes (COCs) from follicles >8 (L-COCs; n=19), 4-8 (M-COCs; n=54), and 2-3 mm (S-COCs; n=155) were recovered from non-stimulated 1-4 months old dairy calves post mortem and ex vivo (laparoscopy), and in parallel from slaughtered adult cows from follicles of identical size categories [> 8 (n=91); 4-8 (n=138); 2-3 mm (n=193)]. Morphologically intact COCs were subjected to in vitro maturation, fertilization, and embryo culture. Cleavage rate (CR; 46 h post-insemination=p.i.), rate of morulae/blastocysts (M/Bl; day 7 p.i.), and blastocysts (Bl; day 9 p.i.) were recorded. FS had no effect on the CR in calves. However, calf L-COCs yielded the highest rates of M/Bl and Bl compared with the two other size categories (P<0.05). In contrast, calf S- and M-COCs gave similar rates of M/Bl, whereas the proportion of Bl was lowest for S-COCs (P<0.05). This was almost identical to findings in cows, except that the CR was highest for L-COCs and M/Bl yields were lowest for S-COCs (P<0.05). There were no differences between calf and cows with regard to CR for the respective FS categories. L-COCs from calves and cows yielded similar rates of M/Bl and Bl, whereas calf S- and M-COCs yielded lower rates of Bl than S- and M-COCs from cows and a lower rate of M/Bl when S-and M-COCs were analyzed as one group (P<0.05). Whereas the CR was similar in calves and cows, calf COCs yielded lower rates of M/Bl and Bl (P<0.05). In conclusion, the results show that the developmental competence of calf oocytes is higher in those derived from follicles larger than 8 mm, and thus are almost equally as competent as cow oocytes derived from follicles of identical size. This suggests that calf oocytes acquire developmental competence within the large follicle, potentially due to a process similar to prematuration of the oocyte in the adult cow. It is proposed that procedures that facilitate prematuration, such as "coasting" following a preceding superstimulation, might increase the developmental competence of calf oocytes.</abstract><cop>Japan</cop><pub>THE SOCIETY FOR REPRODUCTION AND DEVELOPMENT</pub><pmid>16000866</pmid><doi>10.1262/jrd.17002</doi><tpages>8</tpages><oa>free_for_read</oa></addata></record> |
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| source | J-STAGE Free; MEDLINE; DOAJ Directory of Open Access Journals; EZB-FREE-00999 freely available EZB journals; AgriKnowledge（アグリナレッジ）AGROLib |
| subjects | Age Factors Animals Blastocyst - physiology Calf Cattle - physiology Developmental competence Embryo Culture Techniques Female Fertilization in Vitro Follicle size In vitro Morula - physiology Oocyte Oocytes - physiology Ovarian Follicle - anatomy & histology Ovarian Follicle - physiology Time Factors |
| title | The In Vitro Developmental Competence of Oocytes from Juvenile Calves is Related to Follicular Diameter |
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