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

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Jonsson, N.N., Pepper, P.M., Daniel, R.C.W., McGowan, M.C. and Fulkerson, W. (1999) Association between non-parturient post-partum hypocalcaemia and the interval from calving to first ovulation in Holstein-Friesian cows. Animal Science, 69 (2). pp. 377-383. ISSN 1357-7298

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Article Link: https://doi.org/10.1017/S1357729800050943

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.

Item Type:Article
Subjects:Animal culture > Breeding and breeds
Animal culture > Cattle
Veterinary medicine > Diseases of special classes of animals > Cattle
Live Archive:04 Mar 2024 01:42
Last Modified:04 Mar 2024 01:42

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