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Ku MJ, Miguel MA, Kim SH, Jeong CD, Ramos SC, Son AR, Cho YI, Lee SS, Lee SS. Effects of Italian ryegrass silage-based total mixed ration on rumen fermentation, growth performance, blood metabolites, and bacterial communities of growing Hanwoo heifers. JOURNAL OF ANIMAL SCIENCE AND TECHNOLOGY 2023; 65:951-970. [PMID: 37969342 PMCID: PMC10640938 DOI: 10.5187/jast.2023.e16] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 01/02/2023] [Accepted: 02/02/2023] [Indexed: 11/17/2023]
Abstract
This study utilized Italian ryegrass silage (IRGS) - based total mixed ration (TMR) as feedstuff and evaluated its effects on rumen fermentation, growth performance, blood parameters, and bacterial community in growing Hanwoo heifers. Twenty-seven Hanwoo heifers (body weight [BW], 225.11 ± 10.57 kg) were randomly allocated to three experimental diets. Heifers were fed 1 of 3 treatments as follows: TMR with oat, timothy, and alfalfa hay (CON), TMR with 19% of IRGS (L-IRGS), and TMR with 36% of IRGS (H-IRGS). Feeding high levels of IRGS (H-IRGS) and CON TMR to heifers resulted in a greater molar proportion of propionate in the rumen. The impact of different TMR diets on the BW, average daily gain, dry matter intake, and feed conversion ratio of Hanwoo heifers during the growing period did not differ (p > 0.05). Furthermore, the blood metabolites, total protein, albumin, aspartate aminotransferase, glucose, and total cholesterol of the heifers were not affected by the different TMR diets (p > 0.05). In terms of rumen bacterial community composition, 264 operational taxonomic units (OTUs) were observed across the three TMR diets with 240, 239, and 220 OTUs in CON, L-IRGS, and H-IRGS, respectively. IRGS-based diets increased the relative abundances of genera belonging to phylum Bacteroidetes but decreased the abundances of genus belonging to phylum Firmicutes compared with the control. Data showed that Bacteroidetes was the most dominant phylum, while Prevotella ruminicola was the dominant species across the three TMR groups. The relative abundance of Ruminococcus bromii in the rumen increased in heifers fed with high inclusion of IRGS in the TMR (H-IRGS TMR). The relative abundance of R. bromii in the rumen significantly increased when heifers were fed H-IRGS TMR while P. ruminicola increased in both L-IRGS and H-IRGS TMR groups. Results from the current study demonstrate that the inclusion of IRGS in the TMR is comparable with the TMR containing high-quality forage (CON). Thus, a high level of IRGS can be used as a replacement forage ingredient in TMR feeding and had a beneficial effect of possibly modulating the rumen bacterial community toward mainly propionate-producing microorganisms.
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Affiliation(s)
- Min-Jung Ku
- Livestock Research Institute, Jeonnam
Agricultural Research and Extension Services, Gangjin 59213,
Korea
| | - Michelle A. Miguel
- Department of Animal Science and
Technology, Sunchon National University, Suncheon 57922,
Korea
| | - Seon-Ho Kim
- Department of Animal Science and
Technology, Sunchon National University, Suncheon 57922,
Korea
| | - Chang-Dae Jeong
- Department of Animal Science and
Technology, Sunchon National University, Suncheon 57922,
Korea
| | - Sonny C. Ramos
- Department of Animal Science and
Technology, Sunchon National University, Suncheon 57922,
Korea
| | - A-Rang Son
- Department of Animal Science and
Technology, Sunchon National University, Suncheon 57922,
Korea
| | - Yong-Il Cho
- Department of Animal Science and
Technology, Sunchon National University, Suncheon 57922,
Korea
| | - Sung-Sill Lee
- Institute of Agriculture and Life Science
and University-Centered Laboratory, Gyeongsang National
University, Jinju 52828, Korea
| | - Sang-Suk Lee
- Department of Animal Science and
Technology, Sunchon National University, Suncheon 57922,
Korea
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Amani-Yengejeh M, Taghizadeh A, Mohammadzadeh H, Hosseinkhani A, Shirmohammadi S, Abachi S, Palangi V, Eseceli H, Besharati M, Giannenas I. Utilisation of slow-release non-protein nitrogen produced
from agro-industrial by-products: feed digestibility
and ruminal parameters. JOURNAL OF ANIMAL AND FEED SCIENCES 2022. [DOI: 10.22358/jafs/153864/2022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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3
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Ba T, Shen C, Zhang X, Liu CJ. Preparation and characterization of an edible metal-organic framework/rice wine residue composite. RSC Adv 2022; 12:14639-14643. [PMID: 35702247 PMCID: PMC9104762 DOI: 10.1039/d2ra02202h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Accepted: 05/06/2022] [Indexed: 11/21/2022] Open
Abstract
In this communication, using rice wine residue (RWR) as the support, an edible γ-cyclodextrin-metal-organic framework/RWR (γ-CD-MOF/RWR) composite with a macroscopic morphology was synthesized. The obtained edible composite is promising for applications in drug delivery, adsorption, food processing, and others.
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Affiliation(s)
- Teer Ba
- Collaborative Innovation Center of Chemical Science & Engineering, School of Chemical Engineering and Technology, Tianjin University Tianjin 300072 China
| | - Chenyang Shen
- Collaborative Innovation Center of Chemical Science & Engineering, School of Chemical Engineering and Technology, Tianjin University Tianjin 300072 China
| | - Xiaoshan Zhang
- Collaborative Innovation Center of Chemical Science & Engineering, School of Chemical Engineering and Technology, Tianjin University Tianjin 300072 China
| | - Chang-Jun Liu
- Collaborative Innovation Center of Chemical Science & Engineering, School of Chemical Engineering and Technology, Tianjin University Tianjin 300072 China
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4
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Wu Q, Cao M, Xie H, Huang Q, Zhou X, Guo J, Sun Y, Yang J, Lei D, Zhang A, Zuo F, Cao Y. Effects of probiotic administration on the digestibility characteristics and growth performance of finishing beef cattle fed a total mixed ration containing different levels of corn stover. Anim Sci J 2022; 93:e13751. [PMID: 35831959 DOI: 10.1111/asj.13751] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 04/26/2022] [Accepted: 05/13/2022] [Indexed: 11/30/2022]
Abstract
In this study, we aimed to assess the effects of probiotic administration on the digestibility characteristics and growth performance of finishing beef cattle fed a total mixed ration (TMR) containing different levels of corn stover. One hundred and sixty Simmental × Continental crossbred bulls were randomly allocated to two animal houses (80 bulls each) and randomly assigned four TMR differing in the level of corn stover-high (HCT) and low (LCT)-with or without probiotics in each animal house. Feeding HCT supplemented with probiotics increased (P < 0.05) the apparent digestibility of crude protein (CP), ether extract (EE), neutral detergent fiber (NDF), and acid detergent fiber (ADF). Regardless of probiotic supplementation, the nitrogen intake and fecal nitrogen levels of animals fed HCT were lower than those fed LCT (P < 0.05). Additionally, feeding probiotics increased (P < 0.05) the efficiency of ruminal fermentation, final body weight, and average daily gain (ADG) of animals, with this effect being stronger in animals fed HCT. In conclusion, supplementing probiotics with HCT has a positive effect on the growth of finishing beef cattle, thereby providing economic benefits.
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Affiliation(s)
- Qingyu Wu
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Heilongjiang Provincial Key Laboratory of Efficient Utilization of Feed Resources and Nutrition Manipulation in Cold Region, Daqing, China.,Engineering Research Center of Processing and Utilization of Grain By-products, Ministry of Education, Daqing, China
| | - Manyu Cao
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Huade Xie
- Buffalo Research Institute, Chinese Academy of Agricultural Sciences, Nanning, China
| | - Qiulian Huang
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Heilongjiang Provincial Key Laboratory of Efficient Utilization of Feed Resources and Nutrition Manipulation in Cold Region, Daqing, China.,Engineering Research Center of Processing and Utilization of Grain By-products, Ministry of Education, Daqing, China
| | - Xin Zhou
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Heilongjiang Provincial Key Laboratory of Efficient Utilization of Feed Resources and Nutrition Manipulation in Cold Region, Daqing, China.,Engineering Research Center of Processing and Utilization of Grain By-products, Ministry of Education, Daqing, China
| | - Jun Guo
- Animal Epidemic Control Center of Changling County, Songyuan, China
| | - Yun Sun
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Heilongjiang Provincial Key Laboratory of Efficient Utilization of Feed Resources and Nutrition Manipulation in Cold Region, Daqing, China.,Engineering Research Center of Processing and Utilization of Grain By-products, Ministry of Education, Daqing, China
| | - Jingjing Yang
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Heilongjiang Provincial Key Laboratory of Efficient Utilization of Feed Resources and Nutrition Manipulation in Cold Region, Daqing, China.,Engineering Research Center of Processing and Utilization of Grain By-products, Ministry of Education, Daqing, China
| | - De Lei
- Jilin Yutian Husbandry Co. Ltd, Daan, China
| | - Aizhong Zhang
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Heilongjiang Provincial Key Laboratory of Efficient Utilization of Feed Resources and Nutrition Manipulation in Cold Region, Daqing, China
| | - Feng Zuo
- Engineering Research Center of Processing and Utilization of Grain By-products, Ministry of Education, Daqing, China
| | - Yang Cao
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Heilongjiang Provincial Key Laboratory of Efficient Utilization of Feed Resources and Nutrition Manipulation in Cold Region, Daqing, China.,Engineering Research Center of Processing and Utilization of Grain By-products, Ministry of Education, Daqing, China.,Key Laboratory of Low-carbon Green Agriculture in Northeastern China, Ministry of Agriculture and Rural Affairs P. R. China, Daqing, China
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Kim SH, Ramos SC, Jeong CD, Mamuad LL, Park KK, Cho YI, Son A, Lee SS. Growth performance and blood profiles of Hanwoo steers at fattening stage fed Korean rice wine residue. JOURNAL OF ANIMAL SCIENCE AND TECHNOLOGY 2021; 62:812-823. [PMID: 33987562 PMCID: PMC7721570 DOI: 10.5187/jast.2020.62.6.812] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Revised: 08/11/2020] [Accepted: 08/27/2020] [Indexed: 12/01/2022]
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.
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Affiliation(s)
- Seon Ho Kim
- Ruminant Nutrition and Anaerobe Laboratory, Department of Animal Science and Technology, Sunchon National University, Suncheon 57922, Korea
| | - Sonny C Ramos
- Ruminant Nutrition and Anaerobe Laboratory, Department of Animal Science and Technology, Sunchon National University, Suncheon 57922, Korea
| | - Chang Dae Jeong
- Ruminant Nutrition and Anaerobe Laboratory, Department of Animal Science and Technology, Sunchon National University, Suncheon 57922, Korea
| | - Lovelia L Mamuad
- Ruminant Nutrition and Anaerobe Laboratory, Department of Animal Science and Technology, Sunchon National University, Suncheon 57922, Korea
| | - Keun Kyu Park
- Animal Resources Research Center, School of Animal Life and Science, Konkuk University, Seoul 05029, Korea
| | - Yong Il Cho
- Ruminant Nutrition and Anaerobe Laboratory, Department of Animal Science and Technology, Sunchon National University, Suncheon 57922, Korea
| | - Arang Son
- Ruminant Nutrition and Anaerobe Laboratory, Department of Animal Science and Technology, Sunchon National University, Suncheon 57922, Korea
| | - Sang-Suk Lee
- Ruminant Nutrition and Anaerobe Laboratory, Department of Animal Science and Technology, Sunchon National University, Suncheon 57922, Korea
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Ku MJ, Mamuad L, Nam KC, Cho YI, Kim SH, Choi YS, Lee SS. The Effects of Total Mixed Ration Feeding with High Roughage Content on Growth Performance, Carcass Characteristics, and Meat Quality of Hanwoo Steers. Food Sci Anim Resour 2021; 41:45-58. [PMID: 33506216 PMCID: PMC7810391 DOI: 10.5851/kosfa.2020.e73] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 08/03/2020] [Accepted: 08/21/2020] [Indexed: 11/15/2022] Open
Abstract
This study investigated the dietary effect of total mixed ration (TMR) based on high roughage content on the growth performance, carcass characteristics, and meat quality of Hanwoo steers. Twenty-four Hanwoo steers (average body weight, 195.3±4.7 kg; age, 8.5 mon) were randomly allocated to three experimental groups according to forage and concentrate ratio (DM basis): 25:75 (control), 50:50 (T50), and 70:30 (T70). Productivity in the fattening period and final body weight were significantly higher in the control. Average daily gain and feed conversion ratio were the same among treatments. Serum parameters, cholesterol, blood urea nitrogen, and total protein were higher in the control. Carcass weight was comparable in the control and T50 but feeding more roughage was significantly correlated with a higher intramuscular fat. Shear strength and drip loss were higher while n-6/n-3 was lower in T70 compared to the other groups. However, meat color was not significantly different among treatments. In terms of free amino acid contents, glutamic acid and glycine were higher in the control than T50 and T70. Overall, feeding Hanwoo steers with high forage content TMR had the lowest n-6/n-3 ratio of fatty acid content but highest intramuscular fat, shear strength, and drip loss. High forage content TMR is the best feed for Hanwoo steers that gives more benefits for human health and consumption but also provides the best meat grade and quality, which is important in the beef market in Korea.
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Affiliation(s)
- Min Jung Ku
- Livestock Research Institute, Jeonnam
Agricultural Research and Extension Services,
Gangjin 59213, Korea
| | - Lovelia Mamuad
- Department of Animal Science and
Technology, College of Bio-Industry Science, Sunchon National
University, Suncheon 57922, Korea
| | - Ki Chang Nam
- Department of Animal Science and
Technology, College of Bio-Industry Science, Sunchon National
University, Suncheon 57922, Korea
| | - Yong Il Cho
- Department of Animal Science and
Technology, College of Bio-Industry Science, Sunchon National
University, Suncheon 57922, Korea
| | - Seon Ho Kim
- Department of Animal Science and
Technology, College of Bio-Industry Science, Sunchon National
University, Suncheon 57922, Korea
| | - Young Sun Choi
- Livestock Research Institute, Jeonnam
Agricultural Research and Extension Services,
Gangjin 59213, Korea
| | - Sang Suk Lee
- Department of Animal Science and
Technology, College of Bio-Industry Science, Sunchon National
University, Suncheon 57922, Korea
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Fassah DM, Jeong JY, Baik M. Hepatic transcriptional changes in critical genes for gluconeogenesis following castration of bulls. ASIAN-AUSTRALASIAN JOURNAL OF ANIMAL SCIENCES 2018; 31:537-547. [PMID: 29502393 PMCID: PMC5838326 DOI: 10.5713/ajas.17.0875] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/27/2017] [Revised: 01/22/2018] [Accepted: 02/05/2018] [Indexed: 02/07/2023]
Abstract
Objective This study was performed to understand transcriptional changes in the genes involved in gluconeogenesis and glycolysis pathways following castration of bulls. Methods Twenty Korean bulls were weaned at average 3 months of age, and castrated at 6 months. Liver tissues were collected from bulls (n = 10) and steers (n = 10) of Korean cattle, and hepatic gene expression levels were measured using quantitative real-time polymerase chain reaction. We examined hepatic transcription levels of genes encoding enzymes for irreversible reactions in both gluconeogenesis and glycolysis as well as genes encoding enzymes for the utilization of several glucogenic substrates. Correlations between hepatic gene expression and carcass characteristics were performed to understand their associations. Results Castration increased the mRNA (3.6 fold; p<0.01) and protein levels (1.4 fold; p< 0.05) of pyruvate carboxylase and mitochondrial phosphoenolpyruvate carboxykinase genes (1.7 fold; p<0.05). Hepatic mRNA levels of genes encoding the glycolysis enzymes were not changed by castration. Castration increased mRNA levels of both lactate dehydrogenase A (1.5 fold; p<0.05) and lactate dehydrogenase B (2.2 fold; p<0.01) genes for lactate utilization. Castration increased mRNA levels of glycerol kinase (2.7 fold; p<0.05) and glycerol-3-phosphate dehydrogenase 1 (1.5 fold; p<0.05) genes for glycerol utilization. Castration also increased mRNA levels of propionyl-CoA carboxylase beta (mitochondrial) (3.5 fold; p<0.01) and acyl-CoA synthetase short chain family member 3 (1.3 fold; p = 0.06) genes for propionate incorporation. Conclusion Castration increases transcription levels of critical genes coding for enzymes involved in irreversible gluconeogenesis reactions from pyruvate to glucose and enzymes responsible for incorporation of glucogenic substrates including lactate, glycerol, and propionate. Hepatic gluconeogenic gene expression levels were associated with intramuscular fat deposition.
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Affiliation(s)
- Dilla Mareistia Fassah
- Department of Agricultural Biotechnology and Research Institute of Agriculture and Life Sciences, College of Agriculture and Life Sciences, Seoul National University, Seoul 08826, Korea
| | - Jin Young Jeong
- Animal Nutrition & Physiology Team, National Institute of Animal Science, Rural Development Administration, Wanju 55365, Korea
| | - Myunggi Baik
- Department of Agricultural Biotechnology and Research Institute of Agriculture and Life Sciences, College of Agriculture and Life Sciences, Seoul National University, Seoul 08826, Korea.,Institute of Green Bio Science and Technology, Seoul National University, Pyeongchang 25354, Korea
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Kim TI, Mayakrishnan V, Lim DH, Yeon JH, Baek KS. Effect of fermented total mixed rations on the growth performance, carcass and meat quality characteristics of Hanwoo steers. Anim Sci J 2017; 89:606-615. [PMID: 29205706 DOI: 10.1111/asj.12958] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2017] [Accepted: 10/12/2017] [Indexed: 12/01/2022]
Abstract
This study was conducted to assess the effects of fermented total mixed ration (FTMR) on the growth performance, carcass and meat quality traits of Hanwoo steers. The present study evidenced that the FTMR had a strong effect on dry matter intake, body weight, daily gain, slaughter weight and carcass characteristics compared with control animals. The results showed that the dry matter intake (7.17 ± 0.13 kg), average body weight (615.20 ± 112.82 kg), and daily gain (0.56 ± 0.16 kg) were greater in animals receiving FTMR than in control animals (P < 0.05). The meat quality characteristics indicated that cooking loss and the pH values did not vary between control and FTMR treated animals; however, animals in the treated groups (FTMR) had higher meat quality grades, carcass weight (396.13 ± 18.35), fat thickness (13.25 ± 1.75), marbling score (5.63 ± 0.56), meat color (40.06 ± 1.23), crude fat (18.39 ± 1.32) and sensory characteristics (flavor 5.03 ± 0.17; tenderness 4.42 ± 0.33; juiciness 5.10 ± 0.16). Nevertheless, the shear force values decreased significantly in FTMR-treated animals compared with control group steers. Overall, FTMR may not only improve the growth performance, biochemical metabolites, and fatty and acetic acid profiles of steers, but may also enhance the carcass and meat quality characteristics of Hanwoo steers. Regarding economics, our research findings suggest that FTMR-based feeds may enhance Hanwoo steer meat quality at a low cost.
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Affiliation(s)
- Tae-Il Kim
- Dairy Science Division, National Institute of Animal Science, Rural Development Administration, Cheonan-si, Chungcheongnam-do, Korea
| | - Vijayakumar Mayakrishnan
- Dairy Science Division, National Institute of Animal Science, Rural Development Administration, Cheonan-si, Chungcheongnam-do, Korea
| | - Dong-Hyun Lim
- Dairy Science Division, National Institute of Animal Science, Rural Development Administration, Cheonan-si, Chungcheongnam-do, Korea
| | - Jeong-Ha Yeon
- Dairy Science Division, National Institute of Animal Science, Rural Development Administration, Cheonan-si, Chungcheongnam-do, Korea
| | - Kwang-Soo Baek
- Dairy Science Division, National Institute of Animal Science, Rural Development Administration, Cheonan-si, Chungcheongnam-do, Korea
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Chung CS, Cho WK, Jang IS, Lee SS, Moon YH. Effects of feeding system on growth performance, plasma biochemical components and hormones, and carcass characteristics in Hanwoo steers. ASIAN-AUSTRALASIAN JOURNAL OF ANIMAL SCIENCES 2017; 30:1117-1123. [PMID: 28669143 PMCID: PMC5494485 DOI: 10.5713/ajas.17.0166] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 03/03/2017] [Revised: 04/18/2017] [Accepted: 05/27/2017] [Indexed: 11/27/2022]
Abstract
OBJECTIVE This study was conducted to compare growth performance, blood components and carcass traits by two feeding systems (concentrate with roughage separately [CON] vs total mixed ration [TMR]) in Hanwoo steers, and to learn the relationship between blood components during fattening or finishing phases and carcass traits in Hanwoo steers. METHODS Sixty steers aged 8 months were allotted to two feeding systems and fed similar amounts of average dry matter and total digestible nutrient throughout whole experimental period according to each feeding program. Steers were weighed monthly, taken blood at the end of growing, fattening and finishing periods, and slaughtered at 30 month of age. RESULTS Growing performance was higher (p<0.05) in the CON group compared to the TMR group during fattening and finishing periods. The CON group was lower (p<0.05) in blood aspartic acid transaminase, blood urea nitrogen and retinol levels during growing period, but higher in triglyceride and cholesterol levels during fattening and finishing periods compared to the TMR group. The CON group was greater (p<0.05) in rib-eye area, and lighter (p<0.05) red in meat color compared to the TMR group. In the correlation coefficients between blood components of steers and carcass traits, retinol had a negative (p<0.05) correlation with marbling score and rib-eye area. Leptin had a positive (p<0.05) correlation with back fat thickness. Blood cholesterol and triglyceride were positively (p<0.05) correlated with carcass weight and rib-eye area. CONCLUSION Growth performance, carcass ribeye area and meat color showed a more desirable result in the CON compared to the TMR in Hanwoo steers. Assessing the accumulated data of carcass traits with blood components including hormones-particularly retinol, cholesterol, triglyceride, and leptin-during the fattening or finishing phases, it may be possible to find a biomarker for determining beef quality in living animals.
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Affiliation(s)
- Chan Sung Chung
- Gyeonggido Livestock and Veterinary Service, Suwon 16381, Korea
| | - Woong Ki Cho
- Division of Applied Life Science(Institute of Agriculture & Life Science), BK21 plus, Gyeongsang National University, Jinju 52828, Korea
| | - In Seok Jang
- Department of Animal Science and Biotechnology, Gyeongnam National University of Science and Technology Jinju 52725, Korea
| | - Sung Sill Lee
- Division of Applied Life Science(Institute of Agriculture & Life Science), BK21 plus, Gyeongsang National University, Jinju 52828, Korea
| | - Yea Hwang Moon
- Department of Animal Science and Biotechnology, Gyeongnam National University of Science and Technology Jinju 52725, Korea
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