Abstract
Abstract As the future of agricultural sciences, it is imperative that student scientists seek to investigate alternatives to help improve production by lowering costs while meeting dietary requirements, increasing output, and maintaining sustainability. Anthropogenic waste as potential feedstock, we are engaging in an innovative wave of agricultural research. While previous research in our laboratory has evaluated newspaper, waste popcorn, and crawfish shells as feedstock, their potential for ensiling represents an alternative avenue for upcycling and long-term storage. The objective of this experiment was to determine the optimum concentrations of newspaper, waste popcorn, and crawfish shells for ideal silage fermentation. This experiment was conducted as a Box-Wilson composite design with four replications. Prescribed amounts of shredded newspaper, ground crawfish shells and heads, and waster popcorn were thoroughly mixed, and water and inoculant were added to achieve 25% dry matter. Central points for popcorn were 35.5, 1.3, 35.5, and 1.3% dry matter, respectively, for grain silage, grass silage, high combination, and low combination. Central points for crawfish were 4.0, 6.4, 4.0, and 6.4% dry matter, respectively, for grain silage, grass silage, high combination, and low combination. Samples were sealed using a food-grade sealer and allowed to ferment for 35 d. A subsample was frozen for assay of pH and silage acids. The remaining sample was dried at 55°C, ground, and assayed for NDF, ADF, CP, and IVTD. Across block, there was no effect of crawfish or popcorn inclusion on NDF (P ≥ 0.09; μ = 74%), ADF (P ≥ 0.24; μ = 60%), or IVTD (P ≥ 0.12; μ = 35%). Results are interpreted to mean that these feed ingredients may be used in non-feedstock silage production, but its usefulness to livestock production is questionable.
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