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International Journal of Poultry Science

.: Home > International Journal of Poultry Science > 2014 > Volume 13 Number 8 > J.H. Kim, P.H. Patterson and W.K. Kim

Impact of Dietary Crude Protein, Synthetic Amino Acid and Keto Acid Formulation on Nitrogen Excretion

J.H. Kim, P.H. Patterson and W.K. Kim
Poultry Science Division, National Institute of Animal Science, RDA, Cheoan 330-808, Republic of Korea 1 Department of Animal Science, Pennsylvania State University, University Park, PA 16802, USA 2 Department of Poultry Science, University of Georgia, Athens, GA 30602, USA
Abstract :

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.

Keywords :
Feed formulation, keto acid, synthetic amino acids, hydroxyl analogue

Date Deposited : 24 Mar 2015 10:41

Last Modified : 24 Mar 2015 10:41

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Volume 13, Number 8, - 2014 , ISSN 1682-8356

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