Efecto del ensilaje y la biodegradación con larva de mosca sobre las características nutricionales y bacterianas de la excreta de cerdo

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JOSÉ JUAN MARTÍNEZ MAYA
IVONNE AUBERT DE LA PARRA
GERMÁN BORBOLLA SOSA

Abstract

THE OBJECTIVE OF THE PRESENT STUDY WAS TO COMPARE THE NUTRITIONAL CHARACTERISTICS OF PIG MANURE SILAGE TO THAT OF PIG MANURE BIOLOGICALLY DEGRADED USING FLY LARVAE. DRY MATTER (DM) CONTENT DECREASED (P < 0.05) WITH THE BIODEGRADATION PROCESS (53.90% VS. 29.38%), BUT DID NOT CHANGE DURING THE ENSILING ONE (40.09% VS. 40.83%). CRUDE PROTEIN (CP), CRUDE FIBER (CF), AND ASH CONCENTRATIONS IN THE BIODEGRADATION PROCESS (26.2%, 12.1%, 14.6%) WERE HIGHER (P < 0.05) THAN THE ONES FOUND WITH THE SILAGE PROCESS. HOWEVER, FAT AND FREE NITROGEN CONTENT ON SILAGE MANURE (13.5%, 46.9%) WERE HIGHER (P < 0.05) THAN IN THE BIODEGRADATED MANURE (8.7%, 39.1%). NO DIFFERENCES (P > 0.05) WERE FOUND IN THE CONTENT OF NON PROTEIC NITROGEN (NPN) WHICH AVERAGED 6.6%. E COLI WAS DETECTED ON 10% OF THE SILAGES ONLY. ACCORDING TO THESE RESULTS, BOTH PROCESSES COULD BE CONSIDERED FOR A RECYCLING WASTE PROGRAM. THE BIODEGRADATION PROCESS PRESENTS SOME ADVANTAGES, RESULTING IN A MORE STABLE PRODUCT; IN ADDITION, 43.5 G OF FLY LARVAE PER KG OF MANURE WITH 48% CP WERE PRODUCED.
Keywords:
PIG MANURE ENSILAGE FLY LARVAE E COLI SALMONELLA spp
DOI: https://doi.org/10.21753/vmoa.32.004.56

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