ISSN: 1659-2751

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Anaerobic Stabilization of Food Wastes for the Elaboration of Feed Supplements for Swine

Abstract

The main goal of this project was the production of a pelletized feed product for pigs prepared with kitchen waste from EARTH University’s cafeteria. Food scraps were collected from the cafeteria, ground to remove excess moisture, mixed with rice semolina and EM (Efficient Microorganisms), and fermented for 1 week in 20-kg plastic containers. The resulting product was again ground, and then dried, to form pellets. Two types of rice semolina (fermented and non-fermented), and three concentrations of EM (5 %, 10 %, and 15 %) were studied. The physical characteristics of consistency, texture and appearance, and the chemical characteristics of dry matter, crude protein, metabolic energy and pH, of the final product were evaluated. The results obtained indicated that the feed product containing the fermented rice semolina and 10% EM had the best texture, consistency and palatability characteristics. The highest crude protein percentage and lowest pH values were obtained in the products containing the previously fermented rice semolina. No significant differences were obtained between treatments as far as levels of metabolic energy and dry matter content. The palatability tests showed that the product was readily accepted by the test animals as an alternative feed source.

Key words: Silage, fermentation, Efficient Microorganisms (EM), kitchen waste, rice semolina.

Artículo en español (pdf) (1382)