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SiloSolve® FC reduces spoilage, increases dry matter recovery in corn silage

News   •   Jun 28, 2016 20:19 GMT

A recent study shows that SiloSolve® FC keeps corn silage fresher for longer, thanks to two bacterial strains that work together to increase dry matter recovery and reduce spoilage.

The newest addition to the portfolio of SiloSolve® silage inoculants, SiloSolve® FC contains two bacterial strains that reduce spoilage microorganisms in different, but complementary ways. According to product manager Mai-Brit Voss, a novel and patented strain known as Lactococcus lactis 0224 reduces residual oxygen in ensiled corn, limiting the ability of yeast and mold to grow. Meanwhile, Lactobacillus buchneri helps keep spoilage microorganisms in check at feed-out by increasing the amount of acetic acid, thereby improving aerobic stability.

“Our research confirms that the two bacterial strains in SiloSolve® FC work together to preserve silage both during fermentation and at feed-out,” Voss explains. “The result is increased dry matter recovery and less spoilage.”

Study design

The study was conducted at the Institute of Animal Science in Lithuania to evaluate the effect of SiloSolve® FC on fermentation and aerobic stability of corn silage. Corn with a moisture content of 61.5 % was chopped by a forage harvester under farm conditions to a length of 0.8 inches and ensiled in mini silos.

The trial included two treatments replicated five times each: untreated corn and corn inoculated with SiloSolve® FC at a dose of 150,000 cfu/g of fresh forage. Within two hours of crop preparation, mini silos were filled with approximately 2.2 lbs fresh cut corn forage, sealed and fermented for 90 days at a constant temperature of 68°F. On day 90, the moisture content was determined and a 10-day aerobic stability challenge was performed. Aerobic stability was determined by monitoring the temperature increase in silages stored in insulated PVC-tubes at 68°F ambient temperature.

Results

After 90 days of fermentation, yeasts and molds were significantly lower in silage treated with SiloSolve® FC than in the untreated control silage (Table 1).

The inoculated silage also had higher aerobic stability, as demonstrated by the lower amount of heat it generated after being exposed to air (heat signals nutrient degradation, which indicates spoilage). Whereas the untreated silage exceeded ambient temperature by 5.4°F 66 hours after aerobic exposure, the inoculated silage never exceeded ambient temperature and stayed visibly fresher throughout the 10-day aerobic stability challenge (Figures 1 and 2).

According to Voss, the benefit of reducing fungi was a 2.9% increase in dry matter recovery for the treated silage (Table 2). As seen in Figure 2, the treated silage still looks fresh compared to untreated after the 10-day aerobic stability challenge. (Figure 2)

“The significantly increased dry matter recovery we observed with SiloSolve® FC means feed stays fresher, longer,” Voss explains. “This translates not only to less waste, but also to better feed quality — which means better performance for dairy cows and better returns for the producer.”