An observation on the contents of nutrient, fatty acid and changes of lipid peroxide in different storaged commercial pet foods for dogs and cats

애완동물용 식품의 영양성분 및 지방산의 분석과 보관상태별 지질과산화물량의 변화 관찰

  • Aoki, Hisataka (Faculty of International Relations, Nihon University) ;
  • Sakai, Takeo (Department of Preventive Veterinary Medicine and Animal Health, School of Veterinary Medicine Nihon University) ;
  • Lee, Won-Chang (Department of Veterinary Medicine and Animal Resources Research Center, Kon-Kuk University)
  • ;
  • ;
  • 이원창 (건국대학교 수의학과, 동물자원연구센터)
  • Received : 1997.02.10
  • Published : 1997.06.25

Abstract

While the contents of protein, fat, fiber, sodium, vitamin A, and vitamin D in dry dog food were 22.0%, 7.8%. 5.4%, 0.36%, 2035 IU/100g and 201 IU/100g, respectevely, those in dry cat food were 29.8%, 6.5%, 4.5%, 0.38%, 1543 IU/100g and 163 IU/100g, respectively. Concerning the lipid contents of pet food, the concentration of unsturated fatty acid was slightly higher of dry dog food(59.2%) than that of dry cat food(55.9%), but the differences was statistically not significant. The lipid peroxide concentration in dry dog food after storage in a refrigerator at $4^{\circ}C$ or dark place of room temperture at $20{\pm}2^{\circ}C$ for 30 days(8.0 nmol/g and 7.8 nmol/g) was not different from the value at the beginning of storage. However, upon storage in direct sunlight at $20{\pm}2^{\circ}C$ of room temperture, the concentration increased 4.9-fold(35.5 nmol/g) after 5 days and 10.2-fold(73.6 nmol/g) after 30 days. These results suggest that pet food may be refrigerated or stored in a dark place after unsealing.