Improvement of nutritional quality of ruminant feed composed of soybean straw and ryegrass hay

The purpose of this study was to increase the nutritional value two raw materials (soybean straw and ryegrass hay), in order propose use as feed for ruminants. Different technologies were used develop animal feed: addition proteins, Spirulina platensis biomass, solid state fermentation by Aspergillus niger, encapsulation microalgae biomass (capsules with xanthan gum chitosan), well control tests. chemical composition (moisture, crude protein, lipids, ash, fiber, neutral detergent fiber acid fiber) different treatments determined. Although using fungus niger did not decrease content, soybean hay improved quality bulky feed, increasing until 87% 80% protein content hay, respectively. Furthermore, soy straw, gelatin or encapsulated, decreased fiber. bypass obtained encapsulated allows agro-industrial waste, adding which may milk production lactating cows.