Oestrus Signalling and Dairy Cow Well-Being
Author Information
Author(s): Emanuel Garcia, Jan Hultgren, Pontus Fällman, Johanna Geust, Bo Algers, George Stilwell, Stefan Gunnarsson, Heriberto Rodriguez-Martinez
Primary Institution: Swedish University of Agricultural Sciences
Hypothesis
Optimal behavioural display of oestrus indicates the level of well-being among dairy cattle.
Conclusion
Higher intensity of oestrus signalling is associated with better reproductive outcomes and animal well-being in dairy cows.
Supporting Evidence
- More heifers (46%) than C1-cows (10%) showed standing oestrus.
- Pregnancy rate was higher in heifers (72%) compared to C1-cows (37%).
- Standing oestrus was associated with 4.8-fold higher odds of pregnancy.
Takeaway
Cows that show strong signs of being in heat are more likely to get pregnant, which is good for their health and well-being.
Methodology
The study involved monitoring oestrous intensity and progesterone levels in 37 heifers and 30 first-parity cows, assessing their reproductive performance and well-being indicators.
Potential Biases
Potential bias from the observational nature of the study and reliance on personnel for oestrus detection.
Limitations
The study was conducted on a single farm, which may limit the generalizability of the findings.
Participant Demographics
The study included 37 heifers and 30 first-parity cows, primarily Swedish Red and Swedish Holstein breeds.
Statistical Information
P-Value
p<0.01
Confidence Interval
95% CI = 1.38–16.45 for pregnancy odds
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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