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Association between non-parturient post-partum hypocalcaemia and the interval from calving to first ovulation in Holstein-Friesian cows

Published online by Cambridge University Press:  18 August 2016

N.N. Jonsson ,
P.M. Pepper ,
R.C.W. Daniel ,
M.C. McGowan  and
W. Fulkerson
N.N. Jonsson
Affiliation:
Department of Primary Industries Queensland, Australian Tropical Dairy Institute, MS 825 Peak Crossing, Queensland 4306, Australia
P.M. Pepper
Affiliation:
Department of Primary Industries Queensland, Animal Research Institute, Moorooka, Queensland 4150, Australia
R.C.W. Daniel
Affiliation:
University of Queensland, Veterinary Science and Animal Production, Queensland 4072, Australia
M.C. McGowan
Affiliation:
University of Queensland, Veterinary Science and Animal Production, Queensland 4072, Australia
W. Fulkerson
Affiliation:
NSW Agriculture, Wollongbar Agricultural Institute, NSW2477, Australia
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Abstract

This study was undertaken to quantify the effect of episodes of subclinical hypocalcaemia on the interval from calving to first ovulation. It incorporated three separate surveys during early lactation of 44 and 60 cows at Mutdapilly Research Station and 56 cows at Wollongbar Agricultural Institute. Twenty-five, 37 and 39% of cows respectively, experienced episodes later than 3 days after calving, of non-parturient post-partum hypocalcaemia, when plasma calcium concentration fell below 2⋅00 mmolll. Episodes of subclinical hypocalcaemia did not affect the interval to first post-partum ovulation in the two experiments conducted at Mutdapilly Research Station but ovulation was significantly delayed in cows that experienced episodes of subclinical hypocalcaemia at Wollongbar Agricultural Institute.

Keywords

dairy cattlehypocalcaemiaovulation

Information

Type
Research Article
Information
Animal Science , Volume 69 , Issue 2 , October 1999 , pp. 377 - 383
Copyright
Copyright © British Society of Animal Science 1999

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