Journal of Animal Science and Technology

  • 제66권3호
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  • Pages.493-503
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  • 2024
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  • 2672-0191(pISSN)
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  • 2055-0391(eISSN)
한국축산학회 (Korean Society of Animal Sciences and Technology)
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A reduction in dietary crude protein with amino acid balance has no negative effects in pigs

  • Junyoung Mun (Department of Animal Industry Convergence, Kangwon National University) ;
  • Habeeb Tajudeen (Department of Animal Industry Convergence, Kangwon National University) ;
  • Abdolreza Hosseindoust (Department of Animal Industry Convergence, Kangwon National University) ;
  • Sanghun Ha (Department of Animal Industry Convergence, Kangwon National University) ;
  • Serin Park (Department of Animal Industry Convergence, Kangwon National University) ;
  • Jinsoo Kim (Department of Animal Industry Convergence, Kangwon National University)
  • 투고 : 2023.05.12
  • 심사 : 2023.06.27
  • 발행 : 2024.05.31
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초록

The aim of this experiment was to evaluate the effects of low crude protein (CP) level with essential amino acids (AA) addition on growth performance, nutrient digestibility, microbiota, and volatile fatty acid composition in growing pigs. A total of 160 growing pigs (Landrace × Yorkshire × Duroc [LYD]; average initial body weight 16.68 ± 0.12 kg) were randomly allotted to one of the four treatments on the basis of initial body weight. A randomized complete block design was used to conduct this experiment in the Research Center of Animal Life Sciences at Kangwon National University. There were ten pigs/replicate with four replicates in each treatment. The treatments include; CON (Control, 17.2% dietary CP level), low protein (LP)-1.10 (15.7% dietary CP level + 1.10% lysine level), LP-1.15 (15.7% dietary CP level + 1.15% lysine level), LP1.2 (15.7% dietary CP level + 1.20% lysine level). The pigs fed CON and LP-1.2 diet showed greater final body weight than that of LP-1.1 diet (p < 0.05). Although average daily gain, average daily feed intake, and feed efficiency did not show any difference in phase 2 and 3, average daily gain and feed efficiency was significantly greater in CON and LP-1.20 in phase 1. However, the average daily feed intake did not show any difference during the experimental period. Isobutyric acid and isovaleric acid composition of LP treatments were lower than CON treatment in phase 2. Total branched chain fatty acid composition was significantly lower in LP treatment in phases 1 and 2. However, there was no significant difference among treatments in phase 3. The results of this study underscore the importance of AA supplementation when implementing a low-protein diet during the early growth phase (16-50 kg) in pigs.

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참고문헌

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