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New Zealand Veterinary Journal Volume 52, 2004 - Issue 5
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Correspondence

Expression of behavioural signs of oestrus during mid-cycle in a dairy cow

MW Fisher Kotare Bioethics Ltd, PO Box 2484, Stortford Lodge, Hastings, New Zealand E-mail: [email protected]
&
GE Lamming Cattle Fertility Research Group School of Biological Sciences, University of Nottingham Sutton Bonington Campus, Loughborough, LE12 5RD, United Kingdom
Page 297 | Received 02 Feb 2004, Published online: 22 Feb 2011

References

  • Bulman , DC and Lamming , GE . 1978 . Milk progesterone levels in relation to conception, repeat breeding and factors influencing acyclicity in dairy cows . Journal of Reproduction and Fertility , 54 : 447 – 448 .
  • Fisher , MW . 1983 . “ The control of reproduction in the post-partum cow ” . In PhD thesis , Sutton Bonington, , UK : Nottingham University .
  • Garcia , A , van , der , Colenbrander , B and Bevers , MM . 1999 . Monitoring follicular development in cattle by real-time ultrasonography: a review . Veterinary Record , 145 : 334 – 340 .
  • Peters , AR , Lamming , GE and Fisher , MW . 1981 . A comparison of plasma LH concentrations in milked and suckling post-partum cows . Journal of Reproduction and Fertility , 62 : 567 – 573 .
  • Price , CA and Webb , R . 1989 . Ovarian reponse to hCG treatment during the oestrous cycle in heifers . Journal of Reproduction and Fertility , 86 : 303 – 308 .
  • Rajakoski , E . 1960 . The ovarian follicular system in sexually mature heifers with special reference to seasonal, cyclical and left-right variations . Acta Endocrinologica 52 , 52 ( Copenhagen Supplement ) : 1 – 68 .
  • Royal , MD , Darwash , AO , Flint , APF , Webb , R , Wooliams , JA and Lamming , GE . 2000 . Detecting fertility in dairy cattle: changes in traditional and endocrine parameters of fertility . Animal Science , 70 : 487 – 501 .
  • Sturman , H , Oltenacu , EAB and Foote , RH . 2000 . Importance of inseminating only cows in estrus . Theriogenology , 53 : 1657 – 1667 .

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