Nutritional and economical efficiency of three biosilages from agroindustrial wastes in beef cattle
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Abstract
and 13.43 % crude protein; 30.56, 33.52 and 22.58 % crude fiber; 65.11, 60.49 and 70.11 % of lactic acid concentration; pH 4.60, 4.80 and 4.70 and ammonia nitrogen concentration of 3.05, 7.11 and 5.50 %, respectively. In a completely randomized design with three replications, 12 steers with an average initial live weight of 232.25 ? 5.12 kg were used. Animals consumed 3.07 kg/animal/d of dry matter. Best results
were attained with whey silage, with a daily live weight increase of 0.50 kg, feed conversion, 6.76 and an economical profitability of 37 %. Also, there were significant differences (P ? 0.01) between treatments. It is suggested that with this technology the nutritional quality of agroindustrial wastes can be improved and used in cattle fattening. Silage supply biologically activated with whey improves live weight gain, and mitigates environmental pollution.
Key words: biosilage, solid state fermentation, activator, whey, bovine feces
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