Journal of The Korean Society of Grassland and Forage Science (한국초지조사료학회지)

The Korean Society of Grassland and Forage Science (한국초지조사료학회)
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Effects of High Levels of Nutrients on Growth Performance and Carcass Characteristics of Hanwoo Cattle

  • Reddy, Kondreddy Eswar (Animal Nutritional & Physiology Team, National Institute of Animal Science, Rural Development Administration) ;
  • Jeong, Jin Young (Animal Nutritional & Physiology Team, National Institute of Animal Science, Rural Development Administration) ;
  • Ji, Sang Yun (Animal Nutritional & Physiology Team, National Institute of Animal Science, Rural Development Administration) ;
  • Baek, Youl-Chang (Animal Nutritional & Physiology Team, National Institute of Animal Science, Rural Development Administration) ;
  • Lee, Seul (Animal Nutritional & Physiology Team, National Institute of Animal Science, Rural Development Administration) ;
  • Kim, Minseok (Animal Nutritional & Physiology Team, National Institute of Animal Science, Rural Development Administration) ;
  • Oh, Young Kyun (Animal Nutritional & Physiology Team, National Institute of Animal Science, Rural Development Administration) ;
  • Lee, Hyun-Jeong (Animal Nutritional & Physiology Team, National Institute of Animal Science, Rural Development Administration)
  • Received : 2018.08.23
  • Accepted : 2018.09.17
  • Published : 2018.09.30
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Abstract

The present study was conducted to evaluate the effects of high levels of nutrients on the growth performance, blood metabolites and carcass characteristics of Hanwoo cattle. Eighteen Hanwoo steers were fed two types of diets: 1) Nine animals were fed the conventional diet including typical levels of crude protein (CP) and total digestive nutrients (TDN), and 2) Nine animals were fed the treatment diet including high levels of CP and TDN. The average body weight (BW) and dry matter intake (DMI) were greater (P < 0.05) in the treatment group than in the conventional group at early and late fattening stages. Also, in the treatment group, the average daily gain (ADG) was greater (P < 0.05) at the late fattening stage. The serum total lipid and cholesterol levels were higher (P < 0.05) in the late fattening stage of treatment group. The carcass weight, total fat weight, longissimus muscle area and the grade of meat quality were also greater (P < 0.05) in the treatment group than the conventional diet group. This study demonstrates that high levels of CP and TDN exhibit a positive effect on the growth performance and carcass characteristics, indicating that high levels of CP and TDN can be used as a cost-effective feeding program for Hanwoo cattle by shortening the feeding period.

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References

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