Effect of embryo transfer following artificial insemination (ETFAI) on reproductive performance in dairy cows in south-western Japan
In order to improve the reproductive performance during the summer period, embryo transfer (ET; Japanese black embryo) following artificial insemination (AI; Holstein semen: ETFAI) was conducted in dairy cows in south-western Japan (n=56). The conception rate was improved in cows with ETFAI compared...
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Published in | Journal of Veterinary Medical Science Vol. 72; no. 5; pp. 627 - 629 |
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Main Authors | , , , , , , , , , |
Format | Journal Article |
Language | English |
Published |
Japan
JAPANESE SOCIETY OF VETERINARY SCIENCE
01.05.2010
Japan Science and Technology Agency |
Subjects | |
Online Access | Get full text |
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Summary: | In order to improve the reproductive performance during the summer period, embryo transfer (ET; Japanese black embryo) following artificial insemination (AI; Holstein semen: ETFAI) was conducted in dairy cows in south-western Japan (n=56). The conception rate was improved in cows with ETFAI compared with conventional AI, which served as the control (n=195; 30.4% vs. 13.8%. P0.01). However, higher fetal loss was observed in ETFAI compared with the controls (38.1% vs. 7.4%, P0.05). Four cases of twin pregnancy resulted in 2 singletons and a set of twins. There was no difference in the plasma progesterone level on d0 or d7 (d0 |
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Bibliography: | L70 2010005366 L01 ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 0916-7250 1347-7439 |
DOI: | 10.1292/jvms.09-0401 |