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Publication Date
1981
Description
Large improvements in the feeding value of low-quality roughages have resulted from treatment of them with various chemicals. Chemical treatment of grains may also be a potentially useful practice. The research reported here was designed (1) to determine how Chelating Metal Caustic Swelling (CMCS), a nontoxic, alkaline, aqueous reagent, compares with sodium hydroxide (NaOH) in enhancing in-vitro cellulose digestion (IVCD) of cornstalks (CS) (Zea mays) and soybean residues (SBR) (G!),cine max.), and (2) to evaluate the effects of NaOH and CMCS treatments of fibrous grains using in-situ techniques. CMCS or 7.5% NaOH solutions were added to CS or SBR at chemical substrate ratios of 0: 1, 0.25: 1, 0.50: 1, 0.75: 1, 1: 1, 3: 1, and 5: 1. The mixtures were allowed to react for 24 hours, after which time they were washed with water and used immediately for IVCD determinations. As concentration of chemical increased, CS IVCD also increased. At the higher chemical:substrate ratios, NaOH treatment resulted in marked increases in IVCD compared with CMCS. Treatment of SBR with CMCS resulted in either similar or lower IVCDs compared with controls. NaOH had no effect on SBR IVCD, regardless of concentration. An in-situ digestion study was conducted to determine the effect of chemical treatment on ruminal digestion of whole oats (Avena sativa) and barley (Hordeum vulgare). In in-situ comparisons between 4% CMCS and 4% NaOH-treated whole oats and barley, CMCS was ineffective in enhancing digestion. In conclusion, these experiments (1) point to the marked differences in reactivity that occur when low-quality roughages are treated with various chemicals and (2) show that NaOH treatment has potential as a grain-processing method.
Citation
Fahey, G C. Jr; Berger, L L.; Mora, M I.; and Van Der Aar, P J., "Evaluations of Low-Quality Roughages and Fibrous Cereal Grains Treated with Various Chemicals" (1981). IGC Proceedings (1977-2023). 4.
(URL: https://uknowledge.uky.edu/igc/1981/section10/4)
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Evaluations of Low-Quality Roughages and Fibrous Cereal Grains Treated with Various Chemicals
Large improvements in the feeding value of low-quality roughages have resulted from treatment of them with various chemicals. Chemical treatment of grains may also be a potentially useful practice. The research reported here was designed (1) to determine how Chelating Metal Caustic Swelling (CMCS), a nontoxic, alkaline, aqueous reagent, compares with sodium hydroxide (NaOH) in enhancing in-vitro cellulose digestion (IVCD) of cornstalks (CS) (Zea mays) and soybean residues (SBR) (G!),cine max.), and (2) to evaluate the effects of NaOH and CMCS treatments of fibrous grains using in-situ techniques. CMCS or 7.5% NaOH solutions were added to CS or SBR at chemical substrate ratios of 0: 1, 0.25: 1, 0.50: 1, 0.75: 1, 1: 1, 3: 1, and 5: 1. The mixtures were allowed to react for 24 hours, after which time they were washed with water and used immediately for IVCD determinations. As concentration of chemical increased, CS IVCD also increased. At the higher chemical:substrate ratios, NaOH treatment resulted in marked increases in IVCD compared with CMCS. Treatment of SBR with CMCS resulted in either similar or lower IVCDs compared with controls. NaOH had no effect on SBR IVCD, regardless of concentration. An in-situ digestion study was conducted to determine the effect of chemical treatment on ruminal digestion of whole oats (Avena sativa) and barley (Hordeum vulgare). In in-situ comparisons between 4% CMCS and 4% NaOH-treated whole oats and barley, CMCS was ineffective in enhancing digestion. In conclusion, these experiments (1) point to the marked differences in reactivity that occur when low-quality roughages are treated with various chemicals and (2) show that NaOH treatment has potential as a grain-processing method.
