Browse > Article
http://dx.doi.org/10.5187/JAST.2007.49.3.369

Effects of Different Levels of CP Intake on Protein Utilization and N Excretion in Varying Growth Stages of Hanwoo Steers  

Oh, Y.G. (National Institute of Animal Science, RDA)
Nam, I.S. (National Institute of Animal Science, RDA)
Choi, C.W. (National Institute of Animal Science, RDA)
Baek, K.H. (National Institute of Animal Science, RDA)
Kim, J.H. (Department of Animal Science and Environment, Konkuk University)
Kim, D.H. (Division of Applied Life Science, Gyeongsang University)
Seol, Y.J. (Division of Applied Life Science, Gyeongsang University)
Kim, K.H. (National Institute of Animal Science, RDA)
Publication Information
Journal of Animal Science and Technology / v.49, no.3, 2007 , pp. 369-378 More about this Journal
Abstract
Three experiments with different stage of Hanwoo steers (average BW of 167kg, 355kg and 449kg, respectively) were conducted to examine the effect of different quantities of CP intake with similar DM intake on protein balance and N excretion. Twelve Hanwoo steers in each experiment were offered three diets containing three levels of protein (9, 14 and 18% on DM basis) in the concentrate formulated with using different amount of ground corn grain or corn gluten meal. There were significant effects of increasing CP intake on CP digestibility but not on DM digestibility. Despite different CP intake, apparent fecal N outputs were not significantly affected. However, amounts of N excreted into urine increased (p<0.05) with increasing CP intake. There was an obvious effect of live body weight on efficiency of body protein conversion of CP consumed in excess of animal requirement for maintenance, with slopes of 70% and 46~39% for growing and fattening stage, respectively. Nitrogen excretion into feces and urine in this experiment was 70% of the daily N consumption for fattening stage, compared with 60% for growing stage.
Keywords
CP intake; Growth stages; Hanwoo steers; N excretion;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
1 農林水魔技術合議事務局 : 日本飼養標準, 肉周年. (2000), 中央畜産會. 東京
2 圖師和好, 井口明浩, 小林正和, 森 知夫, 生井 和夫, 笠井勝美, 棚井草雄, 岩倉直行, 紳適佳弘, 增山秀人, 斎藤友喜, 須藤慶子, 浅田 勉, 宮重 俊一, 甫立京子, 阿部啓之, 河北由美, 阿部 亮. 1999.肥育前期もこおける飼料中 CP 水準及び肥 育後期もこあけるデンプン, NDF水準が黒毛化種 去勢牛の産育性に及ぼす影響. 畜試研究資料, 13: 1-88
3 김경훈, 이주환, 오영균, 강수원, 이상철, 박웅렬, 고영두. 2005. 거세한우에 잇어서 배합사료의 적정 TDN 수준과 도축 월령. 한국동물자원과학회지. 47:731-744
4 A. O. A. C. 1990. Official Methods of Analysis. 15th ed. Association of Official Analytical Chemists. Washington, D. C.
5 Brannan, W. L., Hatfield, E. E., Owens, F. N. and Lewis, J. M. 1973. Protein concen- tration and sources for finishing ruminants fed high-concentrate diets. J. Anim. Sci., 36:782-787   DOI
6 Castillo, A. R., Kebreab, E., Beever, D. E., Barbi, J. H., Sutton, J. D., Kirby H. C. and France, J. 2001a. The effect of energy supplementation on nitrogen utilization in lactating dairy cows fed grass silage diets. J. Anim. Sci., 79:240-245
7 Castillo, A. R., Kebreab, E., Beever, D. E., Barbi, J. H., Sutton, J. D., Kirby, H. C. and France, J. 2001b. The effect of protein supplementation on nitrogen utilization in lactating dairy cows fed grass silage diets. J. Anim. Sci., 79:247-253
8 Krysl, L. J., Branine, M. E., Cheema, A. U., Funk, M. A. and Galyean, M. L 1989. Influence of soybean meal and sorghum grain supplementation on intake, digesta kinetics, ruminal fermentation, site and extent of digestion and microbial protein synthesis in beef steers grazing blue grama rangeland. J. Anim. Sci. 67:3040-3051   DOI
9 National Research Council, 2000. Nutrient requirements of domestic animals: Nutrient requirements of beef cattle. update. NAS- NRC, Washinton, D.C
10 Reynal, S. M. and Broderick, G. A. 2003. Effects of feeding dairy cows protein supplements of varying ruminal degradability, J. Dairy Sci. 86:835-843   DOI   ScienceOn
11 SAS. 1996. SAS user's guide. Release 6.12 edition, SAS Institute. Inc., Cary, NC
12 Stokes, S. R., Goetsch, A. L.., Jones, A. L.. and Landis, K. M. 1988. Feed intake and digestion by beef cows fed Prairie hay with different levels of soybean meal and receiving postruminal adrninistration of antibiotics, J. Anim. Sci. 66:1778-1789   DOI
13 Wright, T. C., Moscardini, S., Luimes, P. H. and Mclsride, B. W. 1998. Effects of rumenundegradable protein and feed intake on nitrogen balance and milk protein production in dairy cows. J. Dairy Sci. 81:784-793   DOI   ScienceOn
14 Susmel, P., Spanghero, M., Stefanon, B. and Mills, C R. 1991. Performance of lactating Simmental cows fed two diets differing in the content of digestible intestinal protein (PDI). Livest. Prod. Sci. 27:157-175   DOI   ScienceOn
15 Sutton, J. D., Cammell, S. B., Beever, D. E., Humphries, D. J. and Phipps, R. H. 1998. Energy and nitrogen balance of lactating dairy cows given mixtures of urea-treated whole-crop wheat and geass silage. Ani,. sci. 67:203-212   DOI   ScienceOn
16 Tamminga, S. 1992. Nutrition management of dairy cows as a contribution to pollution control. J. Dairy Sci. 75:345-357   DOI
17 김경훈, 오영균, 이상철, 신기준, 강수원, 문여황, 송만강. 2006. 단백질 균형시험에 의한 한우 거세우의 유지 조단백질 요구량. 한국동물자원과학회지. 48:533-540   DOI
18 김경훈, 오영균, 이상철, 신기준, 정환태, 강수원, 홍성구, 주종철, 백봉현. 2007. 비교도체법에 의한 한우 거세우으 ㅣ증체에너지 및 단백질 요구량. 한국동물자원과학회지. 49:41-50   DOI
19 농림부. 2002. 한국사양표준 (한우)
20 Swanson, K. C, Caton, J. S., Redmer, D. A., Burke' V. I. and Reynolds, 1.. P. 2000. Influence of undegraded intake protein on intake, digestion, serum hormones and metabolites, and nitrogen balance in sheep. Small Ruminant Research 35: 225-233   DOI   ScienceOn
21 Hungate, R. E. 1966. The Rumen and its Microbes. Academic Press, New York
22 Eck, T. P., Bartle, S. J., Preston, R. L, Brandt, R. T. and Richardson, C. R. 1988. Protein source and level for incoming feed-lot cattle. J. Anim. Sci. 66:1871-1876   DOI
23 Hannah, S. M., Cochran, R. C, Vanzant. E. S. and Harmon, D. L. 1991. Influence of protein supplementation on site and extent of digestion, forage intake, and nutrient flow characteristics in steers consuming dormant bluestem-range forage. J. Anim. Sci. 69: 2624-2633   DOI