in feeding experiments with piglets of the country species variously treated straw materials were used in concentrate -- straw meal mixtures after the traditional weaning date ( 49th day of life ) and studies were made of the fermentation of volatile fatty acids ( vfa ) in the large intestine ( colon ) and of the concentration of selected parameters of the protein , fat , carbohydrate and mineral metabolism in the blood serum of the animals .
C0021851
large intestine
C0009368
colon