Agriculture Reference
In-Depth Information
The daily intake of each amino acid
required for maintenance increases pro-
portionately as the bird grows, and even
during the reproductive phase the amount
required for maintenance is a large propor-
tion of the total required. An accurate esti-
mate of the maintenance requirement of
both growing and adult chickens is a ne-
cessity when calculating the daily amount
of amino acids required by these birds at
any stage of life. Therefore, a standardized
and reliable methodology should be used
that takes into consideration bird age, diet
formulation and an appropriate scale used
to express the amino acid requirement for
maintenance. The methodology used in
the trials reported here hopefully provides
a more considered theoretical and meth-
odological basis for measuring mainten-
ance requirements of poultry for amino
acids.
Acknowledgements
The authors wish to thank Fundação de
Amparo à Pesquisa do Estado de São Paulo
(FAPESP) for funding this study.
References
Allen, N.K. and Baker, D.H. (1972) Effect of excessive lysine on the utilization and requirement for
arginine by the chick.
Poultry Science
51,
902.
Armsby, H.P. and Moulton, C.R. (1925)
The Animal as a Converter of Matter and Energy
. The Chemical
Catalog Co. Inc., New York.
Association of Official Analytical Chemists (1990).
Official Methods of Analysis
, 15th edn, AOAC,
Washington, DC.
Bae, S.H., Kim, J.H., Shin, I.S. and Han, K.I. (1999a) Partition of amino acids requirement of broilers
between maintenance and growth. IV. Threonine and glycine.
Asian-Australian Journal of Animal
Science
12,
381-387.
Bae, S.H., Kim, J.H., Shin, I.S. and Han, K.I. (1999b) Partition of amino acids requirement of broilers
between maintenance and growth. V. Isoleucine and valine.
Asian-Australian Journal of Animal
Science
3,
388-394.
Baker, D.H. (1991) Partitioning of nutrients for growth and other metabolic functions: efficiency and
priority considerations.
Poultry Science
70,
1797-1805.
Ball, R.O., Law, G., Betolo, R.F.P. and Pencharz, P.B. (1999). Adequate oral threonine is critical for
mucin production and mucosal growth by neonatal piglet gut. In: Lobley, G.E., White, A. and
Macrae, J.C. (eds)
Proceedings of the VIIIth International Symposium on Protein Metabolism and
Nutrition
, EAAP Publication (96). Wageningen, The Netherlands, pp.
31.
Bequette, B.J. (2003) Amino acid metabolism in animals: an overview. In: D'Mello, J.F.P. (ed.)
Absorption
and Utilization of Amino Acids
. CAB International, Wallingford, UK, pp.
87-102.
Bonato, M.A., Sakomura, N.K., Siqueira, J.C., Fernandes, J.B.K. and Gous, R.M. (2011) Maintenance
requirements for methionine and cysteine, and threonine for poultry.
South African Journal of
Animal Science
41,
209-222.
Bowmaker, J.E. and Gous, R.M. (1991) The response of broiler breeder hens to dietary lysine and
methionine.
British Poultry Science
32,
1069-1088.
Brody, S. (1945)
Bioenergetics and Growth
. Reinhold Publishing Corporation, New York, USA.
Burnham, D. and Gous, R.M. (1992) Isoleucine requirements of the chicken: requirement for maintenance.
British Poultry Science
33,
59-69.
Burroughs, E.W., Burroughs, H.S. and Mitchell, H.H. (1940) The interdependence among amino acids
in their utilization in the endogenous metabolism.
Journal of Nutrition
19,
385-391.
Corzo, A., Moran, E.T. Jr and Hoehler, D. (2004) Valine needs of male broilers from
42
to 56 days of age.
Poultry Science
83,
946-951.
Corzo, A., Kidd, M.T. and Dozier, W.A. III (2007). Dietary threonine needs for growth and immunity
of broilers raised under different litter conditions.
Journal of Applied Poultry Research
16,
574-582.
Deschutter, A. and Leeson, S. (1986) Feather growth and development.
World's Poultry Science Journal
42,
259-267.
