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Effects of Protein Levels on Growth and Nitrogen Balance in Growing Jindo Dog

단백질 수준이 진도자견의 성장과 질소평형에 미치는 영향

  • Kang, T.I. (College of Animal Bioscience & Technology, Konkuk University) ;
  • Maeng, W.J. (College of Animal Bioscience & Technology, Konkuk University) ;
  • Kim, M.H. (College of Animal Bioscience & Technology, Konkuk University) ;
  • Lee, Sang-Rak (College of Animal Bioscience & Technology, Konkuk University)
  • 강태일 (건국대학교 동물생명과학대학) ;
  • 맹원재 (건국대학교 동물생명과학대학) ;
  • 김명화 (건국대학교 동물생명과학대학) ;
  • 이상락 (건국대학교 동물생명과학대학)
  • Published : 2007.10.31

Abstract

This study was conducted to determine the protein requirement level in growing Jindo dog through nitrogen balance experiment. Twelve female dogs aged 18~20 weeks old were allotted one of 3 dietary treatments containing 21, 23 and 25% of crude protein. Average daily gain of dogs fed experimental diets containing 21, 23 and 25% of crude protein were 65.42, 79.58 and 99.17g/d, respectively, and there was a significant difference between 21 and 25% of crude protein treatments(p<0.05). Retained nitrogen were calculated 0.74, 0.96 and 1.31g/kgBW.75/d for dogs fed diets containing 21, 23 and 25% of crude protein, respectively, and were significantly higher(p<0.05) in dogs fed 25% of crude protein diet then those of other dogs. A quadratic regression equation was calculated between nitrogen intake(x) and nitrogen retention(y); y=-2.519x2+12.79x-14.79, and it was found a significantly(p<0.05) higher regression coefficient of 0.782. From the above equation, it was estimated maintenance requirement of crude protein for growing Jindo dog is 11.25g/kg BW.75/d.

Keywords

Growing Jindo dog;Protein requirement level;Nitrogen balance

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