Introduction
Lactobacillus buchneri is a bacterial inoculant approved for use in grass silages, corn silage, legume silage and high moisture grains. Lactobacillus buchneri has been demonstrated to improve aerobic stability of silages by reducing the growth of yeasts. The net result is that silages inoculated with L. buchneri are more resistant to heating at feed out (exposed to air) as compared to untreated silages.
L. buchneri was originally isolated from naturally occurring aerobically stable silages. L. buchneri is a heterofermentative bacteria that produces lactic and acetic acid during fermentation. Silages treated with an effective dose (up to 5 x 105 CFU/gram of fresh material) of L. buchneri have higher concentrations of acetic acid and lower levels of lactic acid than untreated silages.
Lactobacillus buchneri is a bacterium that can improve the aerobic stability of silages and other plant materials by producing acetic acid and reducing yeast growth:
- Aerobic stability: L. buchneri can improve the aerobic stability of silages, making them more resistant to heating when exposed to air. This is because L. buchneri can convert lactic acid to acetic acid, which creates a stable acidic pH that inhibits the growth of molds and other bacteria.
- Yeast growth: L. buchneri can reduce the growth of yeasts.
- Feed intake: Acetic acid produced by L. buchneri can reduce feed intake in ruminants.
L. buchneri is most beneficial in situations where aerobic instability is expected, such as when high moisture corn is exposed to air or when corn silage is transferred between silos.
L. buchneri is also one of the most common bacteria that produces biogenic amines in dairy foods, such as cheese. Biogenic amines can cause amine intoxication, which can lead to headaches, nausea, and urticaria.
Dosing
L. buchneri is a heterofermentative bacteria that produces lactic and acetic acid during fermentation. Silages treated with an effective dose (up to 5 x 105 CFU/gram of fresh material) of L. buchneri have higher concentrations of acetic acid and lower levels of lactic acid than untreated silages.
Storage
Lactobacillus buchneri can be stored in a variety of temperatures and conditions, depending on the desired outcome and the type of silage being treated:
- Silage storage: Silage bags containing L. buchneri can be stored at 20°C or 30°C.
- Ambient temperature: Silos can be stored at ambient temperatures, which can range from 20–27°C.
- Aerobic instability: L. buchneri can be used to treat silage that is expected to have problems with aerobic instability. This can be beneficial for corn silage, small grain silage, and high moisture corn, which are more likely to spoil when exposed to air.
Lactobacillus buchneri is a heterofermentative lactic acid bacteria that can increase the stability of silages against deterioration by yeasts and molds. The acetic acid formed from lactic acid by L. buchneri is responsible for the increased stability.
Other factors that can decrease the aerobic stability of silage include: high ambient temperatures, slow filling, improper packing, low surface removal rate, and poor feed bunk management.
Related, Lactobacillus reuteri Lactobacillus fermentum Lacticaseibacillus casei
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