Objective: The goal of this study was to evaluate kenaf as a roughage source in vitro and its effects on meat quality of Hanwoo (Korean native) cattle. Methods: Three roughage materials, rice straw silage, ryegrass silage, and kenaf silage, were tested in a batch culture and feeding trial. Rumen fer...
Objective: The goal of this study was to evaluate kenaf as a roughage source in vitro and its effects on meat quality of Hanwoo (Korean native) cattle. Methods: Three roughage materials, rice straw silage, ryegrass silage, and kenaf silage, were tested in a batch culture and feeding trial. Rumen fermentation parameters, including gas, pH, volatile fatty acid (VFA), and ammonia were analyzed. In the feeding trial, Hanwoo steers ($373.5{\pm}5.1kg$, n = 36, 11 month of age) were divided into three feeding groups (n = 12 each). Animals were fed with each silage and concentrate until the fattening stage. Results: Crude protein, ether extract, and non-structural carbohydrates were greater in kenaf silage. Total gas production was higher in ryegrass silage, followed by kenaf silage and rice straw silage (p<0.05). Total VFA and individual VFA (acetate, propionate, and n-butyrate) were greater in kenaf silage than rice straw silage (p<0.05). In vitro dry matter digestibility showed a similar trend to that of total gas and VFA production; it was higher in ryegrass silage and lower in rice straw (p<0.05). Throughout the feeding trial, the rice straw silage group showed significantly greater average daily gain than did the others (p<0.05). The feed conversion ratio in the group fed kenaf silage was significantly greater than that of others (p0.05). Conclusion: The results indicated that no negative effects on growth performance and carcass characteristics occurred across treatments. Therefore, kenaf could be substituted for rice straw, which is most widely used as a roughage source in Korea.
Objective: The goal of this study was to evaluate kenaf as a roughage source in vitro and its effects on meat quality of Hanwoo (Korean native) cattle. Methods: Three roughage materials, rice straw silage, ryegrass silage, and kenaf silage, were tested in a batch culture and feeding trial. Rumen fermentation parameters, including gas, pH, volatile fatty acid (VFA), and ammonia were analyzed. In the feeding trial, Hanwoo steers ($373.5{\pm}5.1kg$, n = 36, 11 month of age) were divided into three feeding groups (n = 12 each). Animals were fed with each silage and concentrate until the fattening stage. Results: Crude protein, ether extract, and non-structural carbohydrates were greater in kenaf silage. Total gas production was higher in ryegrass silage, followed by kenaf silage and rice straw silage (p<0.05). Total VFA and individual VFA (acetate, propionate, and n-butyrate) were greater in kenaf silage than rice straw silage (p<0.05). In vitro dry matter digestibility showed a similar trend to that of total gas and VFA production; it was higher in ryegrass silage and lower in rice straw (p<0.05). Throughout the feeding trial, the rice straw silage group showed significantly greater average daily gain than did the others (p<0.05). The feed conversion ratio in the group fed kenaf silage was significantly greater than that of others (p0.05). Conclusion: The results indicated that no negative effects on growth performance and carcass characteristics occurred across treatments. Therefore, kenaf could be substituted for rice straw, which is most widely used as a roughage source in Korea.
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제안 방법
Three roughage sources, rice straw silage, ryegrass silage, and kenaf silage, were tested to compare the effectiveness of kenaf silage as a new forage material. In vitro fermentation was performed as described by Tilley and Terry [8].
However, there has been little study concerning the effects of kenaf feeding on Hanwoo steer, Korean native steer. We therefore designed this study to evaluate kenaf in vitro and its effects on the meat quality of Hanwoo steer.
대상 데이터
Daily feed intake was checked. The feeding trial was performed at an experimental farm located in Jeong-eup city, Korea.
데이터처리
Rumen fermentation parameters from the batch culture, including gas production, pH, VFA, and ammonia, as well as IVDMD, growth performance, carcass characteristics, and meat quality in the feeding trial were averaged and subjected to an analysis of variance using the general linear model procedure of SPSS (version 12). Duncan’s multiple range test was employed for multiple comparisons.
성능/효과
ADG was lower in the kenaf silage group than the rice straw silage group (p<0.05), and the feed conversion ratio was significantly greater in kenaf silage (16.92) than in the rice straw silage (12.06) and ryegrass silage (14.48) (p<0.05).
No significant differences were observed in yield and quality traits, including carcass weight, ribeye area, backfat thickness, and scores of marbling, meat color, and fat color (p>0.05).
참고문헌 (27)
1 Danalatos NG Archontoulis SV Growth and biomass productivity of kenaf ( Hibiscus cannabinus , L.) under different agricultural inputs and management practices in central Greece Ind Crops Prod 2010 32 231 40
2 Chantiratikul A Chaikong C Chinrasri O Kangkun P Evaluation of yield and nutritive value of kenaf ( Hibiscus cannabinus ) at various stages of maturity Pakistan J Nutr 2009 8 1055 8
3 Sgwane TS Teleni E Gardiner CP Kenaf seeds as a potential supplement to sheep Proceedings of Australian Rangeland Society 15th Biennial Conference 2008 Sep 26–Oct 2 Charters Towers, QLD, Australia Australian Rangeland Society 2008
4 Rajashekher AR Rao PV Reddy VR Chemical composition and nutritive value of Ambadi ( Hibiscus cannabinus ) meal for layers Anim Feed Sci Technol 1993 44 151 66
5 Phillips WA Reuter RR Brown MA Growth and performance of lambs fed finishing diet containing either alfalfa or kenaf as the roughage source Small Rumin Res 2002 46 75 9
6 Rude BJ Baldwin BS Hanson KC Performance and nutrient utilization of steers consuming kenaf, pearl millet, or mixed grass Prof Anim Sci 2002 18 74 8
7 Kim BW Sung KI Nejad JG Shin JS Nutritive value and fermentation quality of the silage of three Kenaf ( Hibiscus cannabinas L.) cultivars at three different growth stages J Kor Grassl Forage Sci 2012 32 353 60
10 AOAC Official Methods of Analysis 15th ed Assoc Off Anal Chem Arlington VA, USA AOAC International 1990
11 Van Soest PJ Robertson JB Lewis BA Methods for dietary fiber, neutral detergent fiber, and nonstarch polysaccharides in relation to animal nutrition J Dairy Sci 1991 74 3583 97 1660498
12 Mamvura CI Cho S Mbiriri DT Lee HG Choi NJ Effect of encapsulating nitrate in sesame gum on in vitro rumen fermentation parameters Asian-Australas J Anim Sci 2014 27 1577 83 25358317
13 Erwin ES Marco GJ Emery EM Volatile fatty acid analyses of blood and rumen fluid by gas chromatography J Dairy Sci 1961 44 1768 71
15 Moore JE Procedure for the two-stage in vitro digestion of forage Harris LE Nutrition research techniques for domestic and wild animals 1 Logan, UT, USA Utah State University 1970
16 Buxton DR Redfearn DD Plant limitations to fiber digestion and utilization J Nutr 1997 127 814S 8S 9164243
17 Baumont R Prache S Meuret M Morand-Fehr P How forage characteristics influence behavior and intake in small ruminant: a review Livest Prod Sci 2000 64 15 28
18 Han KJ Albrecht KA Muck RE Kim DA Moisture effect on fermentation characteristics of cup-plant silage Asian-Australas J Anim Sci 2000 13 636 40
19 Kim DH Amanullah SM Lee HJ Effects of different cutting height on nutritional quality of whole crop barley silage and feed value on Hanwoo Heifers Asian-Australas J Anim Sci 2016 29 1265 72 27165022
20 Kang CH Yoo YJ Choi KH Analysis of ecotype, growth and development, yield and feed value of kenaf ( Hibiscus cannabinus L.) genetic resources Korean J Plant Res 2014 27 556 66
21 Han SE Sung KI Kim BW Changes of dry matter yield and nutritive value of kenaf ( Hibiscus cannabis L.) cultivars on different harvest dates in Chunchon area Ann Anim Resour Sci 2017 28 122 33
22 Firdous R Gilani AH Effect of stage of growth and cultivar on chemical compostion of whole maize plant and its morphological fractions Asian-Australas J Anim Sci 1999 12 366 70
23 Xie ZL Zhang TF Chen XZ Li GD Zhang JG Effects of maturity stage on the nutritive composition and silage quality of whole crop wheat Asian-Australas J Anim Sci 2012 25 1374 80 25049492
24 Bowman JGP Sowell BF Surber LMM Daniels TK Nonstructural carbohydrate supplementation of yearling heifers and range beef cows J Anim Sci 2004 82 2724 33 15446489
25 Tan ZL Lu DX Hu M Effect of dietary structural to nonstructural carbohydrate ratio on rumen degradability and digestibility of fiber fractions of wheat straw in sheep Asian-Australas J Anim Sci 2002 15 1591 8
26 Phillips WA Rao S Tungeln DLV Fitch GQ Digestibility of freshly harvested, ensiled, and mature kenaf by sheep Prof Anim Sci 1996 12 99 104
27 Cho SB Lee SM Kim EJ Effect of different forages on growth performance, meat production and meat quality of Hanwoo steers: Meta-analysis J Kor Grassl Forage Sci 2012 32 175 84
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