유지에너지 이상의 사료공급이 거세 한우의 영양소 소화율 및 에너지가에 미치는 영향
Effects of Feeding Levels Above Maintenance Energy on Nutrients Digestibility and Energy Value in Hanwoo Steers
1
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
Supplying an appropriate amount of feed is an economical and environmentally friendly by increasing the nutrient digestibility of livestock and reducing nutrients released from overfeeding. Therefore, this study was conducted to determine the nutrient digestibility according to dietary feeding levels of Hanwoo steers. Three treatments in feeding trial were used feeding amount based on the maintenance energy level of the Korean feeding standard for Hanwoo (2022): 100% (control, CON), 140% (treatment 1, TRT1), and 190% (treatment 2, TRT2). The experiment was designed in replicate 3×3 balanced Latin square designs using six Hanwoo steers. In this study, energy value was predicted according to treatment groups. In addition, nutrient digestibility and energy value were measured through a feeding trial to Hanwoo steers. All energy values, including total digestible nutrients and digestible energy, were predicted to decrease linearly with increasing feeding levels. TRT2 showed lower digestibility than CON for dry matter, crude protein, non-fiber carbohydrates, and total digestible nutrients in the feeding trial (p<0.05). However, there was no significant difference between CON and TRT1. Total digestible nutrients (TDN) and digestibility of feed are set based on the maintenance energy. However nutrient digestibility and TDN decreased when feeding level increased by more than 190% compared to maintenance energy in this study. Therefore, it is necessary to correct the TDN by considering the feeding level when mixing the feed.
Abstract
Supplying an appropriate amount of feed is an economical and environmentally friendly by increasing the nutrient digestibility of livestock and reducing nutrients released from overfeeding. Therefore, this study was conducted to determine the nutrient digestibility according to dietary feeding levels of Hanwoo steers. Three treatments in feeding trial were used feeding amount based on the maintenance energy level of the Korean feeding standard for Hanwoo (2022): 100% (control, CON), 140% (treatment 1, TRT1), and 190% (treatment 2, TRT2). The experiment was designed in replicate 3×3 balanced Latin square designs using six Hanwoo steers. In this study, energy value was predicted according to treatment groups. In addition, nutrient digestibility and energy value were measured through a feeding trial to Hanwoo steers. All energy values, including total digestible nutrients and digestible energy, were predicted to decrease linearly with increasing feeding levels. TRT2 showed lower digestibility than CON for dry matter, crude protein, non-fiber carbohydrates, and total digestible nutrients in the feeding trial (p<0.05). However, there was no significant difference between CON and TRT1. Total digestible nutrients (TDN) and digestibility of feed are set based on the maintenance energy. However nutrient digestibility and TDN decreased when feeding level increased by more than 190% compared to maintenance energy in this study. Therefore, it is necessary to correct the TDN by considering the feeding level when mixing the feed.
참고문헌 (18)
- Albornoz, R. I., "Feed Restriction Reduces Short-Chain Fatty Acid Absorption Across the Reticulorumen of Beef Cattle Independent of Diet", J. Anim. Sci, 91, pp.4730~4738 (2013)
- Cooper, R., "Effects of Imposed Feed Intake Variation on Acidosis and Performance of Finishing Steers", J. Anim. Sci, 77, pp.1093~1099 (1999)
- Doreau, M., "Consequences of Underfeeding on Digestion and Absorption in Sheep", Small Rumin. Res, 49, pp.289~301 (2003)
- Official Methods of Analysis of AOAC International. 18th ed Gaithersburg, "Horwitz, W.", AOAC International, ~ (2005)
- 김경훈, "거세한우의 유지에너지 요구량 결정", 한국축산학회지, 46(2), pp.193~200 (2004), 한국축산학회
- 이상철, "절식대사 시험에 의한 한우 수소의 유지에너지 요구량 결정에 관한 연구", 한국축산학회지, 45(1), pp.113~122 (2003), 한국축산학회
- Licitra, G., "Standardization of Procedures for Nitrogen Fractionation of Ruminant Feeds", Anim. feed Sci. Technol, 57, pp.347~358 (1996)
- National Institute of Animal Science, "Maintenance energy level of the Korean feeding standard for Hanwoo", ~ (2022)
- NRC(National Research Council), "Nutrient Requirements of Dairy Cattle" (2001), National Academies Press
- NASEM(National Academies of Sciences, Engineering, and Medicine), "Nutrient Requirements of Dairy Cattle" (2021), National Academies Press
- 오영균, "한우 거세우의 성장단계별 CP 급여수준이 단백질 체내 이용성 및 N 배설량에 미치는 효과", 한국축산학회지, 49(3), pp.369~378 (2007), 한국축산학회
- Puchala, R., "Effects of Feed Restriction and Realimentation on Mohair Fiber Growth and Tissue Gain by Growing Angora Goats", Livest. Sci, 138, pp.180~186 (2011)
- Sauvant, D., "Quantification of the main digestive processes in ruminants : the equations involved in the renewed energy and protein feed evaluation systems", Animal, 10(5), pp.755~770 (2016)
- 설용주, "육성기 거세한우의 유지에너지 요구량 결정에 관한 연구", 한국축산학회지, 53(2), pp.155~160 (2011), 한국축산학회
- Shi, F. Y., "Effects of Level of Feed Intake and Season on Digestibility of Dietary Components, Efficiency of Microbial Protein Synthesis, Rumen Fermentation and Ruminal Microbiota in Yaks", Anim. Feed Sci. Technol, 259, pp.114359~ (2020)
- Spek, J. W., "CVB Feed Table 2022. Chemical composition and nutritional value of feedstuffs", Stichting CVB, 1~625 (2022)
- Stock, R., "Feed Iintake Variation. In: Symposium:Intake by Feedlot Cattle", Okla. Agric. Exp. Stn, pp.942~ (1995)
- Van Soest, P., "Methods for Dietary Fiber, Neutral Detergent Fiber, and Nonstarch Polysaccharides in Relation to Animal Nutrition", J. Dairy Sci, 74, pp.3583~3597 (1991)