Keeping your inoculant cool and in suspension during application is a critical component of producing top quality silage.
Lallemand Animal Nutrition Technical Services Manager, David Lewis, says that high temperature can have a dramatic impact on the viability and biological activity of silage inoculants.
“The goal of producing quality silage is always to improve livestock health and productivity – and that starts with keeping inoculant cool and in suspension and then ensuring even application.
“The viability of many inoculants can fall by more than 50 percent in the first five hours after hydration under moderately high temperatures.
“Any reduction in viability can dramatically affect silage quality by reducing the efficacy of the inoculant.”
Lactic acid bacteria tend to grow at temperatures of 20–45°C, with the majority preferring temperatures under 40°C.
“Do not leave inoculant products in direct sunlight ie, next to tractor windows, or in areas that are going to heat, David says.
“Inoculant should be stored in its original packaging, out of direct sunlight and kept refrigerated at all times, even when you’re out in the paddock.
Protecting viability is even more important if using an ultra-low volume (ULV) application system, which apply the same number of bacteria as conventional liquid application rates but at rates of just 10 to 50 mL/tonne.
“Viability becomes particularly important with ULV application because low volumes warm up much more quickly than larger volumes,” David says.
“For this reason, the applicator tank should be insulated and positioned well away from heat sources on the forage harvester.
“The other important point to consider is the homogeneity of the solution being applied and its effect on fermentation.
“Bacteria are heavier than water, which means they will start to settle in the bottom of the tank within an hour.
“This means you are going to be applying the correct concentration of bacteria for the first 30 minutes, a more concentrated suspension for the next 30 minutes and then pretty much water for the rest of the day.”
To address these issues, Lallemand Animal Nutrition silage inoculants feature high concentration (HC) technology.
“Put simply, this technology delivers a high concentration of viable bacteria and keeps it in a stable suspension for up to 24 hours to ensure the consistent application of live bacteria to silage throughout the harvesting day.
“HC technology can be used with all application systems and is especially suitable for ULV application systems as there is less risk of clogged pumps.
Lallemand Animal Nutrition is Australia’s leading supplier of silage technology and technical support when it comes to developing and understanding forage-based feeding systems, silage inoculants, sealing systems and associated technologies.
Lallemand can be contacted on tel: 07 5451 0125. See the website at: https://lallemandanimalnutrition.com/en/australia/