The effect of internal and external factors on bovine embryo transfer results in a tropical environment
The objectives of this work were to determine the effect of external (synchronization methods, month, embryo origin and farm effects) and internal factors (age and size of CL, embryo development and quality score, synchronization methods, age of recipient, quality of transfer and reuse of recipients...
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| Veröffentlicht in: | Animal reproduction science 2006-07, Vol.93 (3), p.268-279 |
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| container_title | Animal reproduction science |
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| creator | Bényei, Balázs Komlósi, István Pécsi, Anna Pollott, Geoffry Marcos, Cruvinel Heraldo de Oliveira Campos, Alexandre Lemes, Maida Paula |
| description | The objectives of this work were to determine the effect of external (synchronization methods, month, embryo origin and farm effects) and internal factors (age and size of CL, embryo development and quality score, synchronization methods, age of recipient, quality of transfer and reuse of recipients) on a commercial embryo transfer program in a tropical environment. In the program 1466 Holstein–Friesian purchased embryos were implanted to zebu/European crossbred recipients under field conditions. There were 502 pregnancies detected in this large-scale extension programme. Synchronization methods, month, embryo origin, and farm effects were found to have affected the success rate of embryo transfer. Due to the hot climate and large distances between recipient farms, seasonal effects, reused recipient pregnancy results and the effect of embryo development stage differed from previously reported results. Investigation by ultrasonograph showed that embryo loss occurred before 35 days of pregnancy. Under field conditions, routine fetal sexing resulted in |
| doi_str_mv | 10.1016/j.anireprosci.2005.07.012 |
| format | Article |
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In the program 1466 Holstein–Friesian purchased embryos were implanted to zebu/European crossbred recipients under field conditions. There were 502 pregnancies detected in this large-scale extension programme. Synchronization methods, month, embryo origin, and farm effects were found to have affected the success rate of embryo transfer. Due to the hot climate and large distances between recipient farms, seasonal effects, reused recipient pregnancy results and the effect of embryo development stage differed from previously reported results. Investigation by ultrasonograph showed that embryo loss occurred before 35 days of pregnancy. Under field conditions, routine fetal sexing resulted in <5% misidentification. In conclusion, under tropical conditions external factors have a major influence on the results of pregnancy from embryo transfer.</description><identifier>ISSN: 0378-4320</identifier><identifier>EISSN: 1873-2232</identifier><identifier>DOI: 10.1016/j.anireprosci.2005.07.012</identifier><identifier>PMID: 16169166</identifier><language>eng</language><publisher>Netherlands: Elsevier B.V</publisher><subject>Abortion, Veterinary - epidemiology ; Aging ; Animals ; Cattle - embryology ; Corpus Luteum - anatomy & histology ; Embryo absorption ; Embryo transfer ; Embryo Transfer - veterinary ; Embryonic Development ; Estrus Synchronization ; Female ; Fetal sexing ; Gestational Age ; Male ; Pregnancy ; Seasons ; Tropical Climate ; Ultrasonography</subject><ispartof>Animal reproduction science, 2006-07, Vol.93 (3), p.268-279</ispartof><rights>2005 Elsevier B.V.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c406t-c967da24550a3acfd5b5657eeb7c79a33d34880f5f670a0be1edc401541f52b53</citedby><cites>FETCH-LOGICAL-c406t-c967da24550a3acfd5b5657eeb7c79a33d34880f5f670a0be1edc401541f52b53</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S0378432005002447$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3537,27901,27902,65306</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/16169166$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Bényei, Balázs</creatorcontrib><creatorcontrib>Komlósi, István</creatorcontrib><creatorcontrib>Pécsi, Anna</creatorcontrib><creatorcontrib>Pollott, Geoffry</creatorcontrib><creatorcontrib>Marcos, Cruvinel Heraldo</creatorcontrib><creatorcontrib>de Oliveira Campos, Alexandre</creatorcontrib><creatorcontrib>Lemes, Maida Paula</creatorcontrib><title>The effect of internal and external factors on bovine embryo transfer results in a tropical environment</title><title>Animal reproduction science</title><addtitle>Anim Reprod Sci</addtitle><description>The objectives of this work were to determine the effect of external (synchronization methods, month, embryo origin and farm effects) and internal factors (age and size of CL, embryo development and quality score, synchronization methods, age of recipient, quality of transfer and reuse of recipients) on a commercial embryo transfer program in a tropical environment. In the program 1466 Holstein–Friesian purchased embryos were implanted to zebu/European crossbred recipients under field conditions. There were 502 pregnancies detected in this large-scale extension programme. Synchronization methods, month, embryo origin, and farm effects were found to have affected the success rate of embryo transfer. Due to the hot climate and large distances between recipient farms, seasonal effects, reused recipient pregnancy results and the effect of embryo development stage differed from previously reported results. Investigation by ultrasonograph showed that embryo loss occurred before 35 days of pregnancy. Under field conditions, routine fetal sexing resulted in <5% misidentification. In conclusion, under tropical conditions external factors have a major influence on the results of pregnancy from embryo transfer.</description><subject>Abortion, Veterinary - epidemiology</subject><subject>Aging</subject><subject>Animals</subject><subject>Cattle - embryology</subject><subject>Corpus Luteum - anatomy & histology</subject><subject>Embryo absorption</subject><subject>Embryo transfer</subject><subject>Embryo Transfer - veterinary</subject><subject>Embryonic Development</subject><subject>Estrus Synchronization</subject><subject>Female</subject><subject>Fetal sexing</subject><subject>Gestational Age</subject><subject>Male</subject><subject>Pregnancy</subject><subject>Seasons</subject><subject>Tropical Climate</subject><subject>Ultrasonography</subject><issn>0378-4320</issn><issn>1873-2232</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2006</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqNkUFv1DAQha0KRLeFv4DMhVvC2Int5IhWQCtV4lLOluOMqVeJvdjeFf33eLUrwa2cRjN63xvpPUI-MGgZMPlp15rgE-5TzNa3HEC0oFpg_Ips2KC6hvOOvyIb6NTQ9B2Ha3KT8w4AlJTjG3LNJJMjk3JDfj4-IUXn0BYaHfWhYApmoSbMFH9fFmdsiSnTGOgUjz5UYp3Sc6QlmZAdJpowH5aSK09Nvca9t5XDcPQphhVDeUteO7NkfHeZt-TH1y-P27vm4fu3--3nh8b2IEtjR6lmw3shwHTGullMQgqFOCmrRtN1c9cPAzjhpAIDEzKcK8lEz5zgk-huycezbw3n1wFz0avPFpfFBIyHrOUANS8-vihkY99zyU-O41loa9w5odP75FeTnjUDfapD7_Q_dehTHRqUrnVU9v3lyWFacf5LXvKvgu1ZgDWTo8ekqwUGi3M1tEXP0f_Hmz-qh6OZ</recordid><startdate>20060701</startdate><enddate>20060701</enddate><creator>Bényei, Balázs</creator><creator>Komlósi, István</creator><creator>Pécsi, Anna</creator><creator>Pollott, Geoffry</creator><creator>Marcos, Cruvinel Heraldo</creator><creator>de Oliveira Campos, Alexandre</creator><creator>Lemes, Maida Paula</creator><general>Elsevier B.V</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>7QO</scope><scope>8FD</scope><scope>FR3</scope><scope>P64</scope><scope>7X8</scope></search><sort><creationdate>20060701</creationdate><title>The effect of internal and external factors on bovine embryo transfer results in a tropical environment</title><author>Bényei, Balázs ; 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| fulltext | fulltext |
| identifier | ISSN: 0378-4320 |
| ispartof | Animal reproduction science, 2006-07, Vol.93 (3), p.268-279 |
| issn | 0378-4320 1873-2232 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_68020029 |
| source | MEDLINE; Elsevier ScienceDirect Journals |
| subjects | Abortion, Veterinary - epidemiology Aging Animals Cattle - embryology Corpus Luteum - anatomy & histology Embryo absorption Embryo transfer Embryo Transfer - veterinary Embryonic Development Estrus Synchronization Female Fetal sexing Gestational Age Male Pregnancy Seasons Tropical Climate Ultrasonography |
| title | The effect of internal and external factors on bovine embryo transfer results in a tropical environment |
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