Use of dried waste of cassava starch extraction for feeding lactating cows

Abstract

The aim of this study was to determine the best level of utilization of dried waste of cassava starch extraction (WCSEd) as a substitute for corn for lactating cows. Four lactating cows were fed diets with increasing levels (0%, 33%, 66% and 100%) of WCSEd as a substitute for corn. The intake and digestibility of dry matter and nutrients, milk production and composition, blood parameters of glucose and urea and microbial synthesis of the diets were evaluated. There was a reduction in dry matter intake, organic matter, ether extract and total carbohydrate, and increased intake of acid detergent fiber. Nutrient digestibility was not affected while the synthesis of microbial protein increased. These changes resulted in reduced milk production, without altering the efficiency of production or the constituents of milk, with a decreasing effect on daily production of lactose, solids and minerals. Metabolic parameters, glucose and urea nitrogen in plasma, remained within appropriate levels. The dried residue from the extraction of cassava starch can be used as feed for dairy cows to replace up to 100% of the corn ration. However, its use promotes a reduction in intake of dry matter and nutrients as well as a reduction in the production of milk, with impacts on the profitability of the product.

Nutritional assessment of waste of cassava starch extraction dried in cattle feed

“…These results corroborate with those presented by Fernandes et al (2015), in which cows fed with corn-based animal feed showed a higher intake of 10.27% compared to those that were fed with rations based on WCSEd. The reduction of intake may be associated with increased levels of NDF in diet, since the period for feeding the animals was limited to 8 hours a day, increasing the effect of NDF on ingestion (SILVA, 2011).…”

“…The reduction of intake may be associated with increased levels of NDF in diet, since the period for feeding the animals was limited to 8 hours a day, increasing the effect of NDF on ingestion (SILVA, 2011). The DM intake as a percentage of BW was not influenced by diet, corroborating with the effects observed by Fernandes et al (2015), using the wet residue of cassava in place of maize, in the feeding of lactating cows. The animals showed no weight gain throughout the experiment.…”

“…The coproducts of cassava processing stand out as cheaper energy substitutes for feed formulation for ruminants FERNANDES et al, 2015). This also enables the reduction of agribusiness waste, which would be discarded without treatment, resulting in damage to the environment (MELO et al, 2011).…”

Feeding Value Assessment of Substituting Cassava (Manihot esculenta) Residue for Concentrate of Dairy Cows Using an In Vitro Gas Test

“…One study demonstrated that dried residue after starch extraction could be used to feed dairy cows at around 100 days of lactation to replace more than 100% of corn [ 10 ]. One study showed that fermented cassava residue can be used as an energy source for beef cattle without impacting the digestibility as well as growth and meat performance [ 11 ].…”

Microbiological and physicochemical profiles of the sour cassava starch and bagasse obtained from cassava agroindustry

“…The conservation of this residue is hampered by its high levels of humidity (85%) (Abrahão et al, 2006). The drying of this byproduct would enable its proper conservation and transport, but raise the costs of acquisition (Fernandes et al, 2015). On 2015, Brazil produced 750 thousand tons of cassava starch (Associação Brasileira dos Produtores de Amido de Mandioca, 2018).…”