Energy Balance and Ovarian Activity in Dairy Cows
Author Information
Author(s): Kristian Konigsson, Giovanni Savoini, Nadia Govoni, Guido Invernizzi, Alberto Prandi, Hans Kindahl, Maria Cristina Veronesi
Primary Institution: Department of Clinical Sciences, SLU, Uppsala, Sweden
Hypothesis
The study aims to characterize the energy balance and plasma levels of leptin, NEFA, and IGF-I in Swedish Red and White cows with and without ovarian activity resumption within 7 weeks postpartum.
Conclusion
The study found no significant differences in body weight loss, milk yield, energy balance, and plasma levels of leptin and NEFA between cows with and without ovarian activity resumption, but higher IGF-I levels were observed in cows with ovarian activity resumption.
Supporting Evidence
- 8 out of 12 cows resumed ovarian activity within 7 weeks postpartum.
- Mean body weight loss was greater in cows without ovarian activity resumption.
- Milk protein content was significantly lower in cows without ovarian activity resumption during the third week postpartum.
- IGF-I levels were significantly higher in cows with ovarian activity resumption during the first two weeks postpartum.
Takeaway
The study looked at how cows' energy levels after giving birth affect their ability to start having babies again, and found that some hormones play a big role.
Methodology
The study involved 12 primiparous cows, measuring energy balance weekly and collecting blood samples for hormone analysis over 7 weeks postpartum.
Limitations
The study's estimates of energy balance were based on prediction equations, which may be less accurate than actual measurements.
Participant Demographics
All participants were primiparous Swedish Red and White cows.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
Want to read the original?
Access the complete publication on the publisher's website