title: Comparison of corn gluten meal and meat meal as a protein source in dry foods formulated for cats.
abstract: OBJECTIVE
  To compare the nutritional value of corn gluten meal (CGM) and meat meal (MM) as a dietary source of protein in dry food formulated for adult cats.
  
  
  METHODS
  8 healthy adult cats (4 males and 4 females).
  
  
  METHODS
  Diets containing CGM or MM as the main protein source were each fed for a 3-week period in a crossover study. Digestibility and nutritional balance experiments were conducted during the last 7 days of each period. Furthermore, freshly voided urine was obtained to measure urinary pH, struvite crystals, and sediment concentrations.
  
  
  RESULTS
  Daily food intake and dry-matter digestibility were significantly higher for the MM diet. Fecal moisture content also was higher for the MM diet. Apparent nitrogen (N) absorption and N retention were higher for the MM diet, even when values were expressed as a percentage to account for differences in N intake. Urinary pH, struvite activity product, number of struvite crystals in urine, and urinary sediment concentrations were not different between diets. Retention of calcium, phosphorus, and magnesium was lower for the CGM diet, and cats lost body calcium and magnesium when fed the CGM diet.
  
  
  CONCLUSIONS
  Meat meal was superior to CGM as a protein source in dry foods formulated for cats, because dry-matter digestibility and N utilization were higher for the MM diet. In addition, net loss of body calcium and magnesium for the CGM diet suggests that mineral requirements increase when CGM is used as a protein source.
authors.forename: Masayuki
authors.initials: M
authors.lastname: Funaba
authors.forename: Chiho
authors.initials: C
authors.lastname: Matsumoto
authors.forename: Kunihiro
authors.initials: K
authors.lastname: Matsuki
authors.forename: Ken
authors.initials: K
authors.lastname: Gotoh
authors.forename: Masahiro
authors.initials: M
authors.lastname: Kaneko
authors.forename: Tsunenori
authors.initials: T
authors.lastname: Iriki
authors.forename: Yoshikazu
authors.initials: Y
authors.lastname: Hatano
authors.forename: Matanobu
authors.initials: M
authors.lastname: Abe
mesh_terms: D000821:Animal Feed / Q000592:standards*; D000824:Animal Nutritional Physiological Phenomena; D000818:Animals; D002118:Calcium / Q000378:metabolism; D002415:Cats; D004044:Dietary Proteins; D005243:Feces / Q000737:chemistry; D005260:Female; D005983:Glutens; D008274:Magnesium / Q000378:metabolism; D008297:Male; D008461:Meat Products; D014556:Urine / Q000737:chemistry; D003313:Zea mays
chemical_list: D004044:Dietary Proteins; D005983:Glutens; D008274:Magnesium; D002118:Calcium