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Boosting digestibility of starch in maize silage using
RONOZYME® and hence animal production, fertility and herd profitability. RumiStar™ By Sion Richards, Ruminant Specialist EMEA at DSM
The ruminal starch degradability of maize silage depends on the growing and harvesting conditions. When this is low, an enzyme such as RONOZYME®
RumiStar™ can be added to the feed to boost degradability
For all dairy farmers, achieving herd efficiency and increasing milk yield are top priorities. For this reason, dairy producers invest in maize silage and maize grain that will deliver the most in terms of energy concentration as well as cost savings. In this process, special attention is paid to the starch content of maize (a potent source of energy for milk production) and its rumen degradability, as well as fibre content and digestibility. Maize silage and crimped maize are typically high in starch availability and therefore result in the production of good quality milk. However, 2016 was particularly challenging for dairy farmers due to the unusually rapid maize drying during the summer months, which led to very mature grain with increased vitreousness and, as a result, decreased ruminal starch degradability. As ruminal maize starch
miStar™ that
ows –
digestibility is strongly influenced by maize maturity, farmers have found maize silage to be higher in by-pass starch which means less starch is being digested in the dairy cow rumen. This has a negative impact on feed utilization and waste of energy supply is associated with reduced cow performance i.e. lower milk production, decreased milk quality and poorer fertility as well as significant incurring costs. RONOZYME®
RumiStar™
is the first enzyme that works in dairy cows, i t is a natural enzyme produced by fermentation, which complements perfectly the amylases produced naturally by cows. It is a fully approved EU feed enzyme for incorporation into mineral packs, compound feeds or blends.
cted of eed
bility of corn-based diets PAGE 30 MAY/JUNE 2017 FEED COMPOUNDER
In 15 out of 16 trials RumiStar™ showed a positive effect on milk yield (Cows <150 DIM)*
Germany, Field trial Klingerman, USA
* 1.4 2.3 3.6
Assessing starch digestibility Low starch digestibility can be assessed by farmers in a number of ways. For instance, a normal amount of starch in faeces is
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