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Abstract

The Phantom Cow Syndrome is a major impediment to achieving compact conception patterns in Victorian herds. Some inseminated cows fail to return for a further insemination even though they are not pregnant because the corpus luteum formed following insemination is maintained for an extended period. ...

Author(s)
Pino, C. S.; Macmillan, K. L.; Anderson, G. A.
Publisher
New Zealand Society of Animal Production, Hamilton, New Zealand
Citation
Proceedings of the New Zealand Society of Animal Production, 2006, 66, pp 325-328
Abstract

One aim of this study was to compare the reproductive performance of cows and heifers when resynchronizing returns to oestrus for a second insemination by treating with an intravaginal progesterone-releasing device (IVD) for 7 or 8 d when estradiol benzoate (EB) was administered at the start of...

Author(s)
Cavalieri, J.; Hepworth, G.; Smart, V. M.; Ryan, M.; Macmillan, K. L.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2007, 67, 4, pp 824-834