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Publication Date
1981
Description
Treatment of crop residues with low levels of sodium hydroxide has been shown to improve organic-matter digestibility and animal performance. One objective of these experiments was to evaluate the effects of three treatments -water, sodium hydroxide, and chelating metal cellulose-swelling solution-on solubilization of cell-wall components in corn (Zea m£rys) stover. The two latter treatments were balanced for level of sodium hydroxide application, which was .3 .2 % of stover dry matter. The second objective was to determine the effects of these treatments on in-vitro and in-vivo digestibility as well as on consumption of corn stover. Twelve growing ram lambs were used in an intake and digestion trial composed of three periods. Chelating metal cellulose-swelling solution was capable of dissolving purified cellulose. Sodium hydroxide solubilized 18. 9 % of the hemicellulose and chelating metal cellulose-swelling solution solubilized 11.6% of the hemicellulose and 12.8% of the cellulose in corn stover. Daily consumption of all three treated stovers was 2.3.7 g dry matter/kg body weight0.75. Digestibility of neutral detergent fiber was improved in vitro and in vivo by treatment of stover with sodium hydroxide or chelating metal cellulose-swelling solution. The in-vivo digestibility ofhemicellulose was improved 11. 7 % and 8.3 % , and cellulose digestibility was improved in vivo by 9.4% and 5.6% by sodium hydroxide and chelating metal cellulose-swelling solution treatments, respectively. Nitrogen digestibility was not affected by the three treatments; however, nitrogen retention was depressed by the· chelating metal cellulose-swelling solution. An explanation for this result is not available, but further evaluation of the results indicated that it was not due to differences in urinary nitrogen excretion. It is speculated that cellulose crystallinity is not the only major determinant of plant cell-wall digestibility.
Citation
Schaefer, D M.; Ladisch, M R.; Noller, C H.; and Lechtenberg, V L., "Effect of Solvent Treatments on Intake and Digestibility of Corn Stover" (1981). IGC Proceedings (1977-2023). 3.
(URL: https://uknowledge.uky.edu/igc/1981/section10/3)
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Agricultural Science Commons, Agronomy and Crop Sciences Commons, Plant Biology Commons, Plant Pathology Commons, Soil Science Commons, Weed Science Commons
Effect of Solvent Treatments on Intake and Digestibility of Corn Stover
Treatment of crop residues with low levels of sodium hydroxide has been shown to improve organic-matter digestibility and animal performance. One objective of these experiments was to evaluate the effects of three treatments -water, sodium hydroxide, and chelating metal cellulose-swelling solution-on solubilization of cell-wall components in corn (Zea m£rys) stover. The two latter treatments were balanced for level of sodium hydroxide application, which was .3 .2 % of stover dry matter. The second objective was to determine the effects of these treatments on in-vitro and in-vivo digestibility as well as on consumption of corn stover. Twelve growing ram lambs were used in an intake and digestion trial composed of three periods. Chelating metal cellulose-swelling solution was capable of dissolving purified cellulose. Sodium hydroxide solubilized 18. 9 % of the hemicellulose and chelating metal cellulose-swelling solution solubilized 11.6% of the hemicellulose and 12.8% of the cellulose in corn stover. Daily consumption of all three treated stovers was 2.3.7 g dry matter/kg body weight0.75. Digestibility of neutral detergent fiber was improved in vitro and in vivo by treatment of stover with sodium hydroxide or chelating metal cellulose-swelling solution. The in-vivo digestibility ofhemicellulose was improved 11. 7 % and 8.3 % , and cellulose digestibility was improved in vivo by 9.4% and 5.6% by sodium hydroxide and chelating metal cellulose-swelling solution treatments, respectively. Nitrogen digestibility was not affected by the three treatments; however, nitrogen retention was depressed by the· chelating metal cellulose-swelling solution. An explanation for this result is not available, but further evaluation of the results indicated that it was not due to differences in urinary nitrogen excretion. It is speculated that cellulose crystallinity is not the only major determinant of plant cell-wall digestibility.
