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Growth performance and blood profiles of Hanwoo steers at fattening stage fed Korean rice wine residue

한국축산학회지 2020년 62권 6호 p.812 ~ 823
김선호, Ramos Sonny C., 정창대, Mamuad Lovelia L., 박근규, 조용일, 손아랑, 이상석,
소속 상세정보
김선호 ( Kim Seon-Ho ) - Sunchon National University Department of Animal Science and Technology
 ( Ramos Sonny C. ) - Sunchon National University Department of Animal Science and Technology
정창대 ( Jeong Chang-Dae ) - Sunchon National University Department of Animal Science and Technology
 ( Mamuad Lovelia L. ) - Sunchon National University Department of Animal Science and Technology
박근규 ( Park Keun-Kyu ) - Konkuk University School of Animal Life and Science Animal Resources Research Center
조용일 ( Cho Yong-Il ) - Sunchon National University Department of Animal Science and Technology
손아랑 ( Son A-Rang ) - Sunchon National University Department of Animal Science and Technology
이상석 ( Lee Sang-Suk ) - Sunchon National University Department of Animal Science and Technology

Abstract


The aim of this study was to investigate the effects of Korean rice wine residue (RWR) on the growth performance and blood profiles of Hanwoo steers in the fattening stage. In situ and in vivo experiments were conducted to analyze rumen fermentation characteristics and total tract digestibility, respectively. Three cannulated Hanwoo steers (mean body weight: 448 ± 30 kg) were used in both analyses. The growth performance of 27 experimental animals in the fattening stage (initial body weight: 353.58 ± 9.76 kg) was evaluated after 13 months of feeding. The animals were divided into three treatment groups (n = 9/group). The treatments comprised total mixed ration (TMR) only (CON), TMR + 10% RWR (10% RWR), and TMR + 15% RWR (15% RWR). The diets of equal proportions were fed daily at 08:00 and 18:00 h based on 2% of the body weight. The animals had free access to water and trace mineral salts throughout the experiment. Supplementation of 15% RWR significantly decreased (p < 0.05) the rumen fluid pH compared with the control treatment, but there was no significant difference in the total volatile fatty acid concentration. It also significantly increased (p < 0.05) dry matter digestibility compared with the other treatments. The total weight gain and average daily gain of the animals in the RWR-supplemented groups were significantly higher (p < 0.05) than those in the control group. Furthermore, the feed intake and feed efficiency of the RWR-supplemented groups were higher than those of the control group. Supplementation of RWR did not affect the alcohol, albumin, glucose, total cholesterol, triglyceride, and low-density lipoprotein concentrations, and aspartate aminotransferase and alanine transaminase activities in the blood; these parameters were within the normal range. The high-density lipoprotein and creatinine concentrations were significantly higher in the 15% RWR group, whereas the blood urea nitrogen concentration was significantly higher in the 10% RWR group than in the other groups. These results suggest that TMR with 15% RWR can serve as an alternate feed resource for ruminants.

키워드

In situ; Hanwoo steer; In vivo; Korean rice wine residue

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