Nutrient composition having lipid metabolism-improving action

A livestock feed comprising

• a cellulose acetate having a total degree of acetyl substitution of 0.4 to 1.1,
• wherein the cellulose acetate comprises a cellulose acetate material prepared under effective hydrolysis and precipitation conditions to obtain a compositional distribution index (CDI) of 2.0 or less, where the compositional distribution index is specified by the formula:
• CDI=(Measured value of half height width of chemical composition)/(Theoretical value of half height width of chemical composition)
• wherein:
• the measured value of half height width of chemical composition is a half height width of chemical composition determined by HPLC analysis of a cellulose acetate propionate prepared by propionylating all residual hydroxy groups of the cellulose acetate material;
• and
• the theoretical value of half height width of chemical composition is specified by a formula Math.1:
• [Math.1]
• Theoretical value of half height width of chemical composition
• =2.35482√{square root over (3*DPw*(DS/3)*(1−DS/3))}/DPw
• wherein:
• DS is the total degree of acetyl substitution;
• and
• DPw is a weight-average degree of polymerization determined by a GPC-light scattering method using a cellulose acetate propionate prepared by propionylating all residual hydroxy groups of the cellulose acetate material.

A lipid metabolism-improving agent comprising

• a cellulose acetate having a total degree of acetyl substitution of 0.4 to 1.1,
• wherein the cellulose acetate comprises a cellulose acetate material prepared under effective hydrolysis and precipitation conditions to obtain a compositional distribution index (CDI) of 2.0 or less, where the compositional distribution index is specified by the formula:
• CDI=(Measured value of half height width of chemical composition)/(Theoretical value of half height width of chemical composition)
• wherein:
• the measured value of half height width of chemical composition is a half height width of chemical composition determined by HPLC analysis of a cellulose acetate propionate prepared by propionylating all residual hydroxy groups of the cellulose acetate material;
• and
• the theoretical value of half height width of chemical composition is specified by a formula Math.1:
• [Math.1]
• Theoretical value of half height width of chemical composition
• =2.35482√{square root over (3*DPw*(DS/3)*(1−DS/3))}/DPw
• wherein:
• DS is the total degree of acetyl substitution;
• and
• DPw is a weight-average degree of polymerization determined by a GPC-light scattering method using a cellulose acetate propionate prepared by propionylating all residual hydroxy groups of the cellulose acetate material.

An improving agent for inflammatory bowel diseases or immune disorder, the agent comprising

• a cellulose acetate having a total degree of acetyl substitution of 0.4 to 1.1,
• wherein the cellulose acetate comprises a cellulose acetate material prepared under effective hydrolysis and precipitation conditions to obtain a compositional distribution index (CDI) of 2.0 or less, where the compositional distribution index is specified by the formula:
• CDI=(Measured value of half height width of chemical composition)/(Theoretical value of half height width of chemical composition)
• wherein:
• the measured value of half height width of chemical composition is a half height width of chemical composition determined by HPLC analysis of a cellulose acetate propionate prepared by propionylating all residual hydroxy groups of the cellulose acetate material;
• and
• the theoretical value of half height width of chemical composition is specified by a formula Math.1:
• [Math. 1]
• Theoretical value of half height width of chemical composition
• =2.35482√{square root over (3*DPw*(DS/3)*(1−DS/3))}/DPw
• wherein:
• DS is the total degree of acetyl substitution;
• and
• DPw is a weight-average degree of polymerization determined by a GPC-light scattering method using a cellulose acetate propionate prepared by propionylating all residual hydroxy groups of the cellulose acetate material.