Relationships between early postpartum nutritional and metabolic profiles and subsequent reproductive performance of lactating dairy cows

The objective of this study was to examine the relationship between early postpartum nutritional and metabolic profiles in lactating dairy cows and subsequent pregnancy to first artificial insemination (AI), pregnancy by 150 d in milk (DIM) and pregnancy loss after first AI. A blood sample was colle...

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Bibliographic Details
Published in:Theriogenology 2020-07, Vol.151, p.52-57
Main Authors: Macmillan, K., Gobikrushanth, M., Helguera, I.López, Behrouzi, A., Colazo, M.G.
Format: Article
Language:English
Subjects:
Animal Nutritional Physiological Phenomena
Animals
Cattle - blood
Cattle - physiology
Cholesterol - blood
Cohort Studies
Energy balance
Energy Metabolism - physiology
Enzymes - blood
Female
Fertility
Haptoglobin
Insemination, Artificial
Lactation - physiology
Liver - enzymology
Magnesium
Minerals - blood
Odds Ratio
Postpartum Period
Pregnancy
Pregnancy loss
Retrospective Studies
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Summary:The objective of this study was to examine the relationship between early postpartum nutritional and metabolic profiles in lactating dairy cows and subsequent pregnancy to first artificial insemination (AI), pregnancy by 150 d in milk (DIM) and pregnancy loss after first AI. A blood sample was collected between 2 and 14 (median = 9) DIM from 869 lactating Holstein cows to determine serum concentrations of metabolites, minerals, and liver enzymes. Associations between analytes and fertility were determined using an adjusted odds ratio (OR). Overall, pregnancy to first AI, pregnancy by 150 DIM and pregnancy loss after first AI were 37.9, 65.8 and 11.2%, respectively. Compared to cows pregnant to first AI, non-pregnant cows had higher (P 
ISSN:0093-691X
1879-3231
DOI:10.1016/j.theriogenology.2020.03.034