- Published:
The Relationship Between Blood and Fertility Parameters in Post Partum Dairy Cows
Relationen mellan blod och fertilitetsparametrar hos mjölkkor efter partus
Acta Veterinaria Scandinavica volume 29, pages 393–399 (1988)
Abstract
The onset of post partum ovarian activity, the number of artificial inseminations (AI) and the time of conception were monitored in 412 Icelandic dairy cows during a period of 3 years. Blood was sampled from the animals at various times after calving and the serum concentration of glucoce, urea, calcium (Ca) and magnesium (Mg) measured. A significant positive correlation was found between the levels of glucose, urea and Ca and the number of days from calving.
A significant negative correlation was found between the level of urea and the time of first post partum ovulation. A significant positive correlation was found between the level of glucose and the time of conception. No correlation was found between the blood parameters and the number of AI per animal, the length of first post partum ovarian cycle or the ammount of progesterone found during that cycle.
A distinct, although not statistically significant, tendency towards a negative correlation between the level of glucose and the time of first post partum ovulation was found.
Our results show that the levels of glucose and urea shortly after parturition do indicate the time of onset of post partum ovarian cyclicity.
Our findings indicate that low blood glucose and urea values early post partum lead to subclinical or clinical ketosis which can considerably delay the onset of ovarian activity.
Sammenfattning
Tidpunkten for ny äggstocksaktivitet efter partus, antalet konstgjorda inseminationer (ai) och tidpunkten för konception registrerades hos 412 isländska mjölkkor under en 3 års tid. Blod insamlades från djur vid olika tider efter kalvning och serumkoncentrationen av glukos, urea, kalcium (Ca) och magnesium (Mg) analyserades.
Signifikanta positiva korrelationer erhölls mellan nivåer av glukos och Ca och antal dagar från kalvning. Signifikanta negativa korrelationer erhölls mellan nivå av urea och tiden för första ovulation efter partus. Signifikanta positiva korrelationer hittades mellan nivån av glukos och tidpunkten för konception. Ingen korrelation syntes mellan blodparametrar och antalet ai per djur, längden av första brunstcykeln efter partus eller mängden av progesteron som uppmättas under cyclus.
Resultaten visade en klar, även om inte statistiskt signifikant, benägenhet tili en negativ korrelation mellan nivåer av glukos och tidpunkten för första Ovulation efter partus.
Våra resultat visar att nivåer av glukos och urea kort tid efter förlossningen antyder tidpunkten för början av ny äggstocksaktivitet efter partus. Våra fynd visar att låga blodglukos och ureavärden kort tid efter partus leder till subklinisk eller klinisk ketos vilket kan avsevärt försena början av äggstocksaktiviteten.
References
Bjarnason B: Ketose hos malkekoer i Austur-Skafta-fellssysla vinteren 1984–1985 (Ketosis in dairy cows in the East–Skaftafell Commune during the winter 1984–1985). Dansk VetTidsskr. 1986, 69, 881–889.
Butler WR, Everett RW, Coppock CE: The relationships between energy balance, milk production and ovulation in post partum Holstein cows. J. Anim. Sci. 1981, 53, 742–748.
Eldon J, Olafsson TH, Thorsteinsson TH: A survey of the post partum reproductive performance of dairy cows with fertility problems in southern Iceland. Acta vet. scand. 1985, 26, 431–441.
Eldon J, Olafsson TH: The post partum reproductive status of dairy cows in two areas in Iceland. Acta vet. scand. 1986, 27, 421–439.
Eldon J, Thorsteinsson, TH, Olafsson TH: The concentration of blood glucose, urea, calcium and magnesium in milking dairy cows. J. Vet. Med. A. 1988, 35, 44–53.
Hignet SL, Hignet PG: The influence of nutrition on reproductive efficiency in cattle. Vet. Rec. 1951, 63, 603–609.
Howard Η J, Aalseth EP, Adams GD, Bush LJ, Mc–New R W, Dawson LJ: Influence of dietary protein on reproductive performance of dairy cows. J. Dairy Sci. 1987, 70, 1563–1571.
Kappel LC, Ingraham RH, Morgan EB, Zeringue L, Wilson D, Babcock DK: Relationship between fertility and blood glucose and cholesterol concentrations in Holsein cows. Amer. J. vet. Res. 1984, 45, 2607–2612.
McClure TJ: Hypoglycaemia, an apparent cause of infertility of lactating cows. Brit. vet. J. 1968, 124, 126–130.
Morrow DA, Tyrell HF, Trimberger GW: Effects of liberal concentrate feedingt on reproduction in dairy cattle. J. Amer. vet. med. Ass. 1969, 155, 1946–1954.
Olafsson G, Sigurdarson S, Thorsteinsson TH: Sur–doði og fόðun um burð um burd (Ketosis and feeding at calving). Freyr. 1974, 70, 429–431.
Oltner R, Edqvist L-E: Progesteron i mjölk (Progesterone in milk). In »Progesteron i mjölk«. SHS Communication no. 101, 1980, 4–28.
Oltner R, Edqvist L–E: Progesterone in defatted milk: Its relation to insemination and pregnancy in normal cows as compared with cows on problem farms and individual problem animals. Brit. vet. J. 1981, 37, 78–87.
Payne JM, Leech FB: Factors affecting plasma calcium and inorganic phosphorus concentrations in the cow with particular reference to pregnancy, lactation and age. Brit. vet. J. 1964. 120, 385–388.
Saarinen P: A statistical study of the effect of excessive feeding of calcium and phosphorus supplements on the blood calcium and phosphorus of dairy cows. J. Sci. Agr. Soc, Finnland, 1950, 10, 122–131.
Sigurdarson S, Thorsteinsson TH: Krammpadoði, bráðadauði og magnesinskortur (Grass tetany, sudden death and hypomagnesaemia). In: J. Jónsson ed. Handbók Baenda. Bunaðarfélag islands 1978, p. 279–281.
SPSS Inc.: SPSS–X Users Guide. 2nd ed. McGraw Hill Book Company, New York, 1983.
Tainturier D, Braun JP, Rico AG, Thouvenot JP: Variations in blood composition in dairy cows during pregnancy and after calving. Res. Vet. Sci. 1984, 37, 129–131.
Visek WJ: Ammonia: Its effects on biological systems, metabolic hormones, and reproduction. J. Dairy Sci. 1984. 67, 481–498.
Acknowledgments
We thank Prof. H. Kindahl, at the Department of Obstetrics and Gynaecology, Swedish University of Agricultural Sciences, and Dr. G. Georgsson, Institute for Experimental Pathology, Keldur, for reviewing the manuscript. This study was supported by the Icelandic Science Fund and the International Atomic Energy Agency.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Eldon, J., Ólafsson, T. & Thorsteinsson, T. The Relationship Between Blood and Fertility Parameters in Post Partum Dairy Cows. Acta Vet Scand 29, 393–399 (1988). https://doi.org/10.1186/BF03548634
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1186/BF03548634