DDGS (Dried Distillers Grains with Solubles) are an alternative feed for the formulation of pig diets as well as being a sustainable way in which to use the residues derived from cereal-based ethanol production.
The energy present in DDGS as well as fiber, protein and digestible phosphorus makes this raw material attractive for pig production, partially replacing corn and soybean meal.
DDGS have a brown coloration and can hold some golden tones,which are characteristic in fermented foods. Carbon dioxide and alcohol are also by products of the fermentation process(Corassa et al., 2018).
According to Curry et al. (2018) the use of corn DDGS in pig feed has increased due to:
Its availability
Its high energy value
Its available amino acid and phosphorus values
According to Wang et al. (2008) maize was the first cereal to be used for ethanol production in the United States, although triticale and sorghum were also used for the same purpose in pig feed.
When analyzing the chemical composition of the DDGS obtained from the three grains mentioned above, results show promising potential. Making them interesting alternatives to be considered in the formulation of pig diets(Table 1).
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Although Brazil is one of the world’s largest ethanol producers, most of its production currently comes from sugarcane.
According to data from UNICA (Union of the Sugarcane Industry) in the report published in the second quarter of 2021, ethanol from corn reached 2.57 billion liters of production during the 2020/21 campaign, which marked anincrease of 58.13% compared to the previous campaign.
In many recent studies, low-tannin sorghum with adequate processing demonstrated equal performance for pigs relative to maize-based diets, thus being able to completely replace dietary corn.
When talking about DDGS obtained from sorghum grains, the values of digestible fiber and metabolizable energy are lower than those obtained with corn DDGS (Corrassa, 2019).
In addition, some studies indicate that a greater inclusion of sorghum DDGS causes worsening of yield and lower feed efficiency for piglets, possibly associated with a variation in the nutritional composition of each source of DDGS, the amounts of solubles added in the diet and the adaptation of animals.
Therefore, it is important to correctly assess the situation and economic viability for the use of this raw material.
On the other hand, ...
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