Effect of Rumen Protected Methionine and α-Tocopherol on Growth Performance, Carcass Characteristics, and Meat Composition of Late Fattening Hanwoo Steer in High-Temperature Seasons
Byung-Ki Park,
Jun-Sang Ahn,
Min-Ji Kim,
Gi-Hwal Son,
Sang-Hun Bong,
Deok-Yun Gil,
Joong-Kook Park,
Chang-Woo Lee,
Eung-Gi Kwon,
Sun-Sik Chang,
Jong-Suh Shin
Affiliations
Byung-Ki Park
Department of Animal Science, Kangwon National University, Chunchoen 24341, Korea
Jun-Sang Ahn
Hanwoo Research Institute, National Institute of Animal Science, RDA, Pyeongchang 25340, Korea
Min-Ji Kim
Department of Animal Science, Kangwon National University, Chunchoen 24341, Korea
Gi-Hwal Son
Department of Animal Science, Kangwon National University, Chunchoen 24341, Korea
Sang-Hun Bong
NUBO Bio & Technologies, Seoul 01838, Korea
Deok-Yun Gil
Department of Animal Science, Kangwon National University, Chunchoen 24341, Korea
Joong-Kook Park
Nonghyup Feed Co., Ltd., Seoul 05398, Korea
Chang-Woo Lee
Kangwon Livestock Technology Research Institute, Hoengseong 25266, Korea
Eung-Gi Kwon
Hanwoo Research Institute, National Institute of Animal Science, RDA, Pyeongchang 25340, Korea
Sun-Sik Chang
Hanwoo Research Institute, National Institute of Animal Science, RDA, Pyeongchang 25340, Korea
Jong-Suh Shin
Department of Animal Science, Kangwon National University, Chunchoen 24341, Korea
This study was conducted to investigate the effects of rumen-protected methionine and α-tocopherol (RPMT) on growth performance, carcass characteristics, and meat composition of late fattening Hanwoo steers in high-temperature seasons. Fourteen steers were randomly assigned to one of two diets; control (commercial concentrate) and treatment (commercial concentrate + 20 g of RPMT). Average daily gain was 34% higher in the treatment group than in the control group; however, there was no significant difference due to the small number under investigation. Feed conversion ratio was lower in the treatment group than in the control group (p p p < 0.01). Thus, the results suggest that RPMT have positive effects on growth performance, and Commission Internationale de l’Eclairage color stability in the longissimus muscle of late fattening Hanwoo steers in high-temperature seasons.
