Effects of Different Starch Sources on Dairy Cows' Milk Production
Author Information
Author(s): Albornoz Rodrigo I., Russo Victoria M., Ho Christie K. M., Giri Khageswor, Allen Michael S., Lock Adam L., Wales William J., Knight Matthew I.
Primary Institution: Agriculture Victoria Research
Hypothesis
Feeding a starch with moderate fermentability (ground corn) will lead to increased dry matter intake and milk production compared to a more fermentable starch (crushed wheat).
Conclusion
The type of starch source offered to dairy cows during the early postpartum period did not significantly affect their feed intake or milk production.
Supporting Evidence
- Both starch sources did not significantly affect dry matter intake.
- Milk yield was slightly higher for cows fed ground corn, but not statistically significant.
- Blood markers of energy status were not affected by the starch source.
Takeaway
This study looked at how different types of starch in cow food affect their milk production. It found that it didn't really matter which starch was used.
Methodology
Thirty-two multiparous dairy cows were fed either crushed wheat or ground corn twice a day and their feed intake and milk production were measured.
Limitations
The study's design limited the cows' access to forage, which may have affected the results.
Participant Demographics
Multiparous Holstein–Friesian cows
Statistical Information
P-Value
p=0.60 for milk yield
Statistical Significance
p>0.05
Digital Object Identifier (DOI)
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