Impact of Dietary Crude Protein, Synthetic Amino Acid and Keto Acid Formulation on Nitrogen Excretion
DOI:
https://doi.org/10.3923/ijps.2014.429.436Keywords:
Feed formulation, hydroxyl analogue, keto acid, synthetic amino acidsAbstract
Nitrogen excretion from poultry facilities is one of the environment concerns. High levels of nitrogen excretion in poultry manure could cause eutrophication, nitrate or nitrite contamination in water, ammonia volatilization and acid deposition in the air. Therefore, minimizing nitrogen excretion in poultry manure is essential to maintain a clean environment. In order to minimize nitrogen excretion in manure, precise feed formulation to meet exact birds' nutrient requirements is critical. In this study, an empirical exercise was conducted to evaluate the possibilities of supplementing hydroxy-analogues or keto acids into low protein diets to minimize dietary nitrogen and reduce nitrogen excretion in poultry manure. The results showed that supplementing synthetic amino acids to the 16% CP diet greatly reduced N input (23.6% N) compared to a typical 23% CP corn and soybean meal diet supplemented with synthetic Met and Lys. Utilizing the three hydroxy-analogues with the 16% CP diet reduced nitrogen input further (approximately 3% more) compared to the 16% CP diet supplemented with synthetic amino acids. This empirical exercise showed the opportunities to reduce protein level and utilize synthetic amino acids, keto acids, or amino acid analogues to reduce nitrogen excretion.
References
Blair, R., J.P. Jacob, S. Ibrahim and P. Wang, 1999. A quantitative assessment of reduced protein diets and supplements to improve nitrogen utilization. J. Applied Poult. Res., 8: 25-47.
Edmonds, M.S., C.M. Parsons and D.H. Baker, 1985. Limiting amino acids in low-protein corn-soybean meal diets fed to growing chicks. Poult. Sci., 64: 1519-1526.
Moore, Jr. P.A., 1998. Best Management Practices for Poultry Manure Utilization that Enhance Agricultural Productivity and Reduce Pollution. In: Animal Waste Utilization: Effective Use of Manure as a Soil Resource, Hatfield, J.L. and B. Stewart (Eds.). CRC Press, Chelsea, MI., pp: 89-117.
NRC., 1994. Nutrient Requirements of Poultry. 9th Edn., National Academy Press, Washington, DC., USA., ISBN-13: 9780309048927, Pages: 176.
Parr, J.F. and J.D. Summers, 1991. The effect of minimizing amino acid excesses in broiler diets. Poult. Sci., 70: 1540-1549.
Pond, W.G., L.H. Breuer, J.K. Loosli and R.G. Warner, 1964. Effects of the α-hydroxy analogues of isoleucine, lysine, threonine and tryptophan and the α-keto analogue of tryptophan and the level of the corresponding amino acids on growth of rats. J. Nutr., 83: 85-93.
Summers, J.D., 1993. Reducing nitrogen excretion of the laying hen by feeding lower crude protein diets. Poult. Sci., 72: 1473-1478.
Waldroup, P.W., 2000. Feeding programs for broilers: The challenge of low protein diets. Proceeding of the 47th Maryland Nutrition Conference, March 22-24, 2000, University of Maryland, College Park, MD., pp: 119-134.
Wang, T.C. and M.F. Fuller, 1990. The effect of the plane of nutrition on the optimum dietary amino acid pattern for growing pigs. Anim. Prod., 50: 155-164.
Winitz, M., J.P. Greenstein and S.M. Birnbaum, 1957. Quantitative nutritional studies with water-soluble, chemically defined diets. V. Role of the isomeric arginines in growth. Arch. Biochem. Biophys., 72: 448-456.
Parsons, C.M., 1991. Amino acid digestibilities for poultry: Feed-stuff evaluation and requirements. Kyowa Hakko Technical Review-1. Kyowa, Chesterfield, MO., pp: 1-15.
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