Open Access Review Article

Silage and Enzyme Additives as Animal Feed and Animals Response

Mebrate Getabalew1, Asebu Mindaye2 and Tewodros Alemneh3*

1Holland Dairy Private Limited Company, Milk Collection Point Coordinator, Debre Zeit, Ethiopia.

2College of Agricultural and Natural Resources Science, Department of Animal Science, Debre Berhan University, Ethiopia.

3Woreta Town Office of Agriculture and Environmental Protection, South Gondar Zone, Amhara Regional State, Ethiopia

Corresponding Author

Received Date: May 12, 2022;  Published Date: September 21, 2022

Abstract

Silage making process can be explained very simply, it is actually very complex and dependent on many factors, such as the natural microbial population, harvesting conditions and the sugar content of the forage. Consequently, silage quality can be very variable and the only way to effectively control the fermentation process is to use an additive. Additives are natural or industrial products added in rather large quantities to the forage or grain mass. Additives control or prevent certain types of fermentation, thus reducing losses and improving silage stability. In order to assist in the fermentation process, various silage additives have been used to improve the nutrient and energy recovery in silage, often with subsequent improvements in animal performance. The purpose for applying additives to the silage is to ensure that the growth of lactic bacteria predominates during the fermentation process, producing lactic acid in quantities high enough to ensure good silage. Therefore, this review is made to focus on some practical aspects of the fermentation process and the uses of some common silage additives that include microbial inoculants, enzymes, and prop ionic acid. For smallholder farmers with limited production capacity, finding enough feed in the winter months to maintain good milk production is always a problem. Many are forced to buy hay, concentrates or silage just to keep their animals alive and are unable to benefit due to the higher prices paid for animal feed in the winter months. Silage making is long practiced by the larger agricultural sector, but the production method relies on heavy equipment and large production, in order to dig or build storage pits and to compress the green mass, putting it beyond the reach of smallholder farmers. Lactic acid is produced when the sugars in the forage plants are fermented by bacteria in a sealed container (‘silo’) with no air. Forage conserved this way is known as ‘ensiled forage’ or ‘silage’ and will keep for up to three years without deteriorating. Silage is very palatable to livestock and can be fed at any time.

Keywords:Silage; Silage additives; Enzymes; Fermentation; Inoculants; Lactic acid; Bacteria; Palatable; Concentrates

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