Effect of optimal sodium stearoyl-2-lactylate supplementation on growth performance and blood and carcass characteristics in Hanwoo steers during the early fattening period

  • Lee, Shin Ja ;
  • Lee, Sang Suk ;
  • Kim, Eun Tae ;
  • Jeong, Jin Suk ;
  • Lee, Ji Hoon ;
  • Jeong, Joon ;
  • Park, Joong Kook ;
  • Park, Beom Young ;
  • Jeong, Ha Yeon ;
  • Ki, Kwang Seok ;
  • Kim, Chang Hyun ;
  • Lee, Sung Sill
  • 투고 : 2018.05.03
  • 심사 : 2018.06.26
  • 발행 : 2018.09.01


Objective: This study was conducted to evaluate the effect of different levels of total digestible nutrients (TDN) and sodium stearoyl-2-lactylate (SSL) supplementation on growth performance and blood and carcass characteristics in Hanwoo steers during the early fattening period. Methods: Sixty Hanwoo steers (average body weight, $333{\pm}36.4kg$) were randomly allotted to 3 treatments, with twenty steers per treatment, and ten steers per pen with a size of $80m^2$. Dietary treatments were as follows: CON, basal diet; treatment (TRT) 0.5, 0.5% down-spec of TDN with 0.1% SSL; TRT 1.0, 1.0% down-spec of TDN with 0.1% SSL. Results: The results demonstrated that average daily gain and feed efficiency increased with TRT 0.5 (0.85 kg and 11.68) vs CON (0.82 kg and 11.27) or TRT 1.0 (0.78 kg and 10.74), indicating that 0.1% SSL supplementation in the feed of early fattening steers may result in a saving of 0.5% TDN. No significant differences were observed amongst all treatments (p>0.05) for blood metabolite concentration and blood corpuscle values, which were all within the normally accepted range for healthy steers. Conclusion: Our study suggests that a TDN 0.5% down spec with 0.1% SSL supplemented feed may be effective and profitable for the early fattening period of Hanwoo steers without causing adverse effects.


Blood Characteristic;Carcass Characteristic;Early Fattening Period;Growth Performance;Sodium stearoyl-2-lactylate


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연구 과제번호 : Cooperative Research Program for Agriculture Science & Technology Development

연구 과제 주관 기관 : Rural Development Administration