title: Effect of dietary crude protein level on jejunal brush border enzyme activities in weaned pigs.
abstract: Forty weaned pigs (7.0 ± 0.5 kg, mean ± SD) were used to determine the effects of feeding a low crude protein, amino acid-supplemented diet to piglets on the activities of jejunal brush border enzymes. Pigs were randomly allotted to two diets: a 222 g crude protein (HCP) per kg diet, or a 173 g crude protein per kg diet supplemented with amino acids (LCP). Pigs fed the HCP diet had higher small intestine weight compared with those fed the LCP diet on day 7 after weaning. Diet had no effect on the specific activities of jejunal sucrase, lactase, leucine aminopeptidase, aminopeptidase A, aminopeptidase N and dipeptidyl peptidase IV. The activities of sucrase and lactase decreased (p < 0.05) from day 3 after weaning to day 7, but the activities of leucine aminopeptidase and aminopeptidase N increased. The results showed that feeding a low protein diet supplemented with amino acids according to the ideal protein ratio to piglets had no negative effect on the development of jejunal brush border enzymes.
authors.affiliation: a Department of Animal Science , University of Manitoba , Winnipeg , Manitoba , Canada.
authors.forename: Florence Omobola
authors.initials: FO
authors.lastname: Opapeju
authors.affiliation: b Evonik Degussa GmbH , Hanau-Wolfgang , Germany.
authors.forename: Meike
authors.initials: M
authors.lastname: Rademacher
authors.affiliation: a Department of Animal Science , University of Manitoba , Winnipeg , Manitoba , Canada.
authors.forename: Charles Martin
authors.initials: CM
authors.lastname: Nyachoti
mesh_terms: D000596:Amino Acids / Q000008:administration & dosage; D000821:Animal Feed / Q000032:analysis; D000824:Animal Nutritional Physiological Phenomena; D000818:Animals; D018753:Diet, Protein-Restricted / Q000662:veterinary*; D004044:Dietary Proteins / Q000008:administration & dosage; D019587:Dietary Supplements / Q000032:analysis; D005260:Female; D007583:Jejunum / Q000201:enzymology / Q000254:growth & development; D008297:Male; D008871:Microvilli / Q000201:enzymology; D011897:Random Allocation; D034421:Sus scrofa / Q000254:growth & development / Q000378:metabolism*; D014886:Weaning
chemical_list: D000596:Amino Acids; D004044:Dietary Proteins
keywords: amino acids; digestion; enzyme activity; piglets; protein