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Effects of Level of CP and TDN in the Concentrate Supplement on Growth Performances and Carcass Characteristics in Hanwoo Steers during Final Fattening Period

한우거세우 비육후기 배합사료의 적정 조단백질 및 에너지함량 규명에 관한 연구

  • Received : 2010.05.17
  • Accepted : 2010.07.21
  • Published : 2010.08.31

Abstract

Seventy two Hanwoo steers in final fattening period ($585.87{\pm}41.02kg$) were randomly assigned to 3 groups, LPLT (relatively low protein and low energy; CP 12%, TDN 73%), LPHT (relatively low protein and high energy; CP 12%, TDN 75%) and HPHT (relatively high protein and high energy; CP 14%, TDN 75%) in concentrate feed for 163 days in order to investigate the effects on growth performance, carcass characteristics, and longissimus dorsi muscle's chemical compositions. Rice straw was also fed as a roughage. Because ADGs were higher in LPLT and HPHT than LPHT, feed efficiencies were improved in LPLT and HPHT group (P<0.05). Feeding concentrates with different CP and TDN levels had affected to improve back fat thickness and rib eye area in HPHT group but had no effect on carcass weight and meat yield index. Carcass weight for LPLT, LPHT and HPHT were $420.75{\pm}30.56$, $417.05{\pm}32.03$ and $418.32{\pm}32.03kg$, respectively. Meat quality grade was improved in HPHT (P<0.001), because the marbling score was highest in HPHT group. Auction prices (carcass/kg) of LPLT, LPHT and HPHT group were 17,904 won, 18,094 won and 18,899 won, respectively. The percentage of animals over grade 1 appeared in LPLT, LPHT and HPHT were 79.2, 72.7 and 90.8%, respectively. The results of chemical analysis of longissimus dorsi muscle showed no difference between groups but crude fat composition tended to be higher in HPHT group (P=0.088) than the other groups. Stearic acid contents in the muscle was significantly increased in HPHT group than LPLT group (P<0.05). Myristoleic acid and oleic acid composition in HPHT group was higher than LPLT and LPHT group. These results supported the hypothesis that supplementation of higher levels of crude protein and energy in concentrates to Hanwoo steers' during final fattening period improved the growth performance and the carcass quality grade.

Keywords

Hanwoo steers;Crude protein;TDN;Growth;Carcass;Fatty acid

References

  1. A.O.A.C. 1995. Official methods of analysis (15th Ed.). Association of Official Agricultural Chemists. Washington, D. C.
  2. Bodine, T. N. and Purvis II3, H. T. 2003. Effects of supplemental energy and/or degradable intake protein on performance, grazing behavior, intake, digestibility, and fecal and blood indices by beef steers grazed on dormant native tallgrass prairie. J. Anim. Sci. 81:304-317. https://doi.org/10.2527/2003.811304x
  3. Carstens, G. E., Johnson, D. E., Ellenberger, M. A. and Tatum, J. D. 1991. Physical and chemical components of the empty body during compensatory growth in beef steers. J. Anim. Sci. 69:3251-3264. https://doi.org/10.2527/1991.6983251x
  4. Chestnutt, D. M. B., Marsh, R., Wilson, J. G., Stewart, T. A., McCullough, T. A. and McCallion, T. 1975. Effects of breed of cattle on energy requirements for growth. Anim. Prod. 21:109-118. https://doi.org/10.1017/S000335610003052X
  5. Folch, J., Lee, M., Stanley, G. H. S. 1957. A simple method for the isolation and purification of total lipids from animal tissue. J. Biological chemistry, 226. 497-509.
  6. Fluharty, F. L., Loerch, S. C., Turner, T. B., Moeller, S. J. and Lowe, G. D. 2000. Effects of weaning age and diet on growth and carcass characteristics in steers. J. Anim. Sci. 78:1759-1767. https://doi.org/10.2527/2000.7871759x
  7. Galyean, M. L. 1996. Protein levels in beef cattle finishing diets: Industry application, university research and system results. J. Anim. Sci. 74:2860-2870. https://doi.org/10.2527/1996.74112860x
  8. Guenther, J. J., Bushman, D. H., Pope, L. S. and Morris, R. D. 1965. Growth and development of the carcass tissues in beef calves from weaning to slaughter weight, with reference to the effect of plane of nutrition. J. Anim. Sci. 24:1184-1191. https://doi.org/10.2527/jas1965.2441184x
  9. Hausman, G. J., Dodson, M. V., Ajuwon, K., Azain, M., Barnes, K. M., Guan, L. L., Jiang, Z., Poulos, S. P., Sainz, R. D., Smith, S., Spurlock, M., Novakofski, J., Fernyhough, M. E. and Bergen, W. G. 2009. BOARD-INVITED REVIEW: The biology and regulation of preadipocytes and adipocytes in meat animals. J. Anim. Sci. 87:1218-1246. https://doi.org/10.2527/jas.2008-1427
  10. Hendrickson, R. L., Pope, L. S. and Hendrikson, R. F. 1965. Effect of rate of gain of fattening beef calves on carcass composition. J. Anim. Sci. 24:507-513. https://doi.org/10.2527/jas1965.242507x
  11. McGuire, M. A., Bauman, D. E., Miller, M. A. and Hartnell, G. F. 1992. Response of somatomedins (IGF-I and IGF-II) in lactating cows to variations in dietary energy and protein and treatment with recombinant n-methionyl bovine somatotropin. J. Nutr. 122:128-136. https://doi.org/10.1093/jn/122.1.128
  12. Meyer, J. H., Hull, J. L., Weitkamp, W. H. and Bonilla, S. 1965. Compensatory growth responses of fattening steers following various low energy intake regimes on hay or irrigated pasture. J. Anim. Sci. 24:29-37. https://doi.org/10.2527/jas1965.24129x
  13. Rule, D. C., Busboom, J. R. and Kercher, C. J. 1994. Effect of dietary canola on fatty acid composition of bovine adipose tissue, muscle, kidney, and liver, J. Anim. Sci. 72:2735-2744. https://doi.org/10.2527/1994.72102735x
  14. SAS, 2005. PC-SAS package. SAS User’s guide; statistic. SAS institute Inc., Cary. NC. USA.
  15. Shoonmaker, J. P., Cecava, M. J., Faulkner, D. B., Fluharty, F. L., Zerby, H. N. and Loerch, S. C. 2003. Effects of energy and rate of growth on performance, carcass characteristics, ruminal fermentation and serum glucose and insulin of early-weaned steers. 81:843-855. https://doi.org/10.2527/2003.814843x
  16. Tarrant, P. V., Kenny, F. J., Harrington, D. and Murphy, M. 1992. Long distance transportation of steers to slaughter: Effects of stocking density on physiology, behavior and carcass quality. Livest. Prod. Sci. 30:223-232. https://doi.org/10.1016/S0301-6226(06)80012-6
  17. Waldman, R. C., Suess, G. G. and Brungardt, V. H. 1968. Fatty acids of certain bovine tissue and their association with growth, carcass and palatability traits. J. Anim. Sci. 27:632-635. https://doi.org/10.2527/jas1968.273632x
  18. Westerling, D. B. and Hderick, H. B. 1979. Fatty acid composition of bovine lipids as influenced by diet, sex and anatomical location and relationship to sensory characteristics. J. Anim. Sci. 48:1343-1348. https://doi.org/10.2527/jas1979.4861343x
  19. Wistuba, T. J., Kegley, E. B. and Apple, J. K. 2006. Influence of fish oil in finishing diets on growth performance, carcass characteristics, and sensory evaluation of cattle. J. Anim. Sci. 84:902-909. https://doi.org/10.2527/2006.844902x
  20. 강우성, 탁태영, 강태홍. 1989. Energy and protein requirements and their utilization in fattening Korean native and Holstein cattle. 한축지 31(7):443.
  21. 백봉현, 홍성구, 권응기, 조원모, 유영모, 신기준. 2005. 거세한우 비육후기농후사료 에너지 수준이 육질 및 경제성에 미치는 영향. 동물자원지 47(3):447-456.
  22. 일본사양표준(육용우). 2000. 농림수산성농림수산기술회의사무국편.
  23. 정준, 원유석, 박노형, 윤충근, 이성수, 정용기, 정귀현, 송만강, 김내수. 2005. Dairy beef의 비육기술개발에 관한 연구. 농림기술개발관리센터연구보고서.
  24. 정준. 2008. 한우 비육후기 거세우의 적정 사료급여수준에 관한 연구. 농협중앙회 2008년 연구보고서.
  25. 중앙축산회. 2000. 일본 사양표준(육용우) 농림수산성 농림수산기술회의사무국편.
  26. 최창본, 신현우, 이상욱, 김성일, 정근기, 최창원, 백경훈, 데이비드런트, 스테판 스미스, 2008. 한우, 앵거스 및 화우 교잡종의 등심내 콜레스테롤 함량 및 지방산 조성 비교. 한국동물자원과학회지. 50(4):519-526. https://doi.org/10.5187/JAST.2008.50.4.519
  27. 한국사양표준. 2007. 농촌진흥청 축산과학원.

Cited by

  1. Effect of mixed hay supplementation during fattening on carcass traits and meat quality of Hanwoo steers vol.59, pp.1, 2017, https://doi.org/10.1186/s40781-017-0131-y

Acknowledgement

Supported by : (주)농협사료