The US study builds on previous research showing a methane mitigation effect when 3-NOP is administered through the total mixed ration (TMR).
The methane inhibitor – 3-nitrooxypropanol or 3NOP – was developed under DSM’s 10-year long Project Clean Cow. DSM has trials running all over the world on this product currently, in both intensive production systems and in pasture based models. And it has filed for market approval on 3NOP in several regions.
In terms of this study, scientists from six universities report, in an article published in the Journal of Dairy Science, on a trial at The Pennsylvania State University's Dairy Teaching and Research Center evaluating the methane mitigation effects of varying doses of 3-NOP in the feed of 49 multiparous Holstein cows.
After a 14-day adjustment period, they outlined how cows received the base TMR mixed with a placebo or one of six treatment doses of 3-NOP ranging from 40 to 200 mg of 3-NOP/kg of feed. Dose levels were chosen based on previous research at this laboratory as well as studies conducted in beef cattle.
The scientists hypothesized that within the range of application rates studied, 3-NOP would decrease enteric methane emissions without affecting dry matter intake or lactational performance of the cows.
The researchers said they found that the inclusion of 3-NOP in the TMR quadratically decreased daily enteric methane emissions by 22 to 40% in lactating dairy cows, with an average reduction of 31%. In this experiment, 3-NOP had no effect on dry matter intake or milk yield but linearly increased milk fat concentration and yield.
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June 25, 2020 at 05:06PM
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US study supports methane emission reduction claims for DSM feed additive - FeedNavigator.com
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