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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 (Institute of Agriculture and Life Science and University-Centered Labs, Gyeongsang National University) ;
  • Lee, Sang Suk (Ruminant Nutrition and Anaerobe Laboratory, Department of Animal Science and Technology, College of Bio-industry Science, Sunchon National University) ;
  • Kim, Eun Tae (National Institute of Animal Science, RDA) ;
  • Jeong, Jin Suk (Division of Applied Life Science (BK21 program) and Institute of Agriculture and Life Science (IALS), Gyeongsang National University) ;
  • Lee, Ji Hoon (Division of Applied Life Science (BK21 program) and Institute of Agriculture and Life Science (IALS), Gyeongsang National University) ;
  • Jeong, Joon (Livestock Research Center, National Agricultural Cooperative Federation) ;
  • Park, Joong Kook (Livestock Research Center, National Agricultural Cooperative Federation) ;
  • Park, Beom Young (National Institute of Animal Science, RDA) ;
  • Jeong, Ha Yeon (National Institute of Animal Science, RDA) ;
  • Ki, Kwang Seok (National Institute of Animal Science, RDA) ;
  • Kim, Chang Hyun (School of Animal Life and Environment Science, Hankyong National University) ;
  • Lee, Sung Sill (Institute of Agriculture and Life Science and University-Centered Labs, Gyeongsang National University)
  • Received : 2018.05.03
  • Accepted : 2018.06.26
  • Published : 2018.09.01

Abstract

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.

Keywords

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

Acknowledgement

Grant : Cooperative Research Program for Agriculture Science & Technology Development

Supported by : Rural Development Administration

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