REFERENCES

• ACKERSON, C.W., HAM, W.E. and MUSSEHL, F.E. (1940). The utilisation of food elements by growing chicks IX The nitrogen of urea. Nebraska Agr. Exp. Sta. Bull. 120.
   Google Scholar
• ADKINS, J. S., SUNDE, M. L. and HARPER, A. E. (1962). The Development of a Free Amino Acid Diet for the Growing Chick. Poult Sci. 41, 1382.
   Web of Science ®Google Scholar
• AGRICULTURAL RESEARCH COUNCIL (1963). The Nutrient Requirements of Farm Livestock No. 1 Poultry. London: Agricultural Research Council.
   Google Scholar
• BARE, L. N., WISEMAN, R. F. and ABBOTT, O. J. (1964). Effects of dietary antibiotics and uric acid on the growth of chicks. j. Nutr. 83, 27.
   Google Scholar
• BICE, C.M. and DEAN, L. A. (1942). Utilisation of urea nitrogen by growing chickens. Poult. Sci., 21, 15.
   Google Scholar
• BLAIR, R., SHANNON, D.W. F., MCNAB, J. M. and LEE, D. J. W. (1972). Effects on chick growth of adding glycine, proline, glutamic acid or diammonium citrate to diets containing crystalline essential amino acids. Br. Poult. Sci. (in press).
   Google Scholar
• BLAIR, R. and WARING, J. J. (1969). Growth response of chicks following addition to the diet of various sources of nitrogen. Br. Poult. Sci., 10, 37.
   PubMed Web of Science ®Google Scholar
• BLAIR, R. and YOUNG, R. J. (1970). Utilisation of ammonium nitrogen by growing and laying birds. Proc. Cornell Nutr. Conf. 93.
   Google Scholar
• BROWN, G. W. Jnr. (1970). Nitrogen metabolism of birds. In “Comparative Biochemistry of Nitrogen Metabolism”, pp. 711–792 (Ed. CAMPBELL, J. W.) Vol. 2. The Vertebrates. Academic Press London, New York.
   Google Scholar
• CHAVEZ, R., THOMAS, J. M. and REID, B. L. (1969). The utilisation of non-protein nitrogen by laying hens. Poult. Sci., 45, 547.
   Google Scholar
• DEAN, W. F. and SCOTT, H. M. (1965). The development of an amino acid reference diet for the early growth of chicks. Poult. Sci., 44. 803.
   PubMed Web of Science ®Google Scholar
• FARLIN, S. D., GARRIGUS, U. S., HATFIELD, E. E. and CONDON, R. J. (1968). Utilisation of biuret as a source of non-specific nitrogen in a crystalline amino acid chick diet. J. Nutr., 94, 32.
   PubMed Web of Science ®Google Scholar
• FEATHERSTON, W. R., BIRD, H. R. and HARPER, A. E. (1961). The effectiveness of different sources of nitrogen for the synthesis of non-essential amino acids. Poult. Sci. 40, 1401.
   Google Scholar
• FEATHERSTON, W. R., BIRD, H. R. and HARPER, A. E. (1962a). Effectiveness of urea and ammonium nitrogen for the synthesis of dispensable amino acids by the chick. J. Nutr. 78, 198.
   PubMed Web of Science ®Google Scholar
• FEATHERSTON, W. R., BIRD, H. R. and HARPER, A. E. (1962b). The ability of the chick to utilise D- and excess L-indispensable amino acid nitrogen in the synthesis of dispensable amino acids. J. Nutr. 78, 95.
   PubMed Web of Science ®Google Scholar
• FELL, R. V., WILKINSON, W. S. and WATTS, A. B. (1959). The utilisation by the chick of D and L amino acids in liquid and dry diets. Poult. Sci., 38, 1203.
   Web of Science ®Google Scholar
• HELBACKA, N. V. L. and HALL, K.N. (1958). Characteristics of albumen and shell quality of eggs from layers fed NH4Cl in the diet. (Abstract). Poult. Sci., 37, 1211.
   Web of Science ®Google Scholar
• HUNT, J. R. (1964). Electrolyte changes in albumen on feeding ammonium chloride. Poult. Sci., 43, 1331.
   Google Scholar
• JONES, H. L. and COMBS, G. F. (1953). Effect of Aureomycin HCl on the utilisation of inorganic nitrogen by the chick. Poult. Sci., 32, 873.
   Web of Science ®Google Scholar
• KLAIN, G. J., SCOTT, H. M. and JOHNSON, B. C. (1959). utilisation of nutrients in a crystalline amino acid diet as influenced by certain non-essential amino acids. Poult. Sci. 38, 489.
   Web of Science ®Google Scholar
• LEE, D. J. W., MCNAB, J. M., SHANNON, D. W. F. and BLAIR, R. (1972). Enzyme studies with the livers of chicks fed semisynthetic diets containing crystalline amino acids and diammonium hydrogen citrate. Br. Poult. Sci., (in press).
   Google Scholar
• LEE, D. J. W. and BLAIR, R. (1972). Effects on chick growth of adding monoammonium citrate, diammonium citrate, triammonium citrate, glutamic acid, urea, uric acid and dried poultry manure to diets containing crystalline essential amino acids., Br. Poult. Sci. (in press).
   Google Scholar
• MANOUKAS, A. G. and YOUNG, R. J. (1969). The performance of laying hens fed various levels of protein and a non-essential amino acid mixture. Poult. Sci., 48, 2037.
   Web of Science ®Google Scholar
• MCNAB, J. M., LEE, D. J. W. and SHANNON, D. W. F. (1970). The incorporation of ammonium nitrogen into amino acids by chick liver homogenates. Proc. Nutr. Soc., 29: 24A.
   Web of Science ®Google Scholar
• MEISTER, A. (1965). In “Biochemistry of The Amino Acids”, second edition. Vo. II, p. 1040 New York, London: Academic Press.
   Google Scholar
• MICHIE, W. (1971). In Research investigations and Field Trials 1969–70. North of Scotland College of Agriculture, 71.
   Google Scholar
• MORAN, E. T. Jr., SUMMERS, J. D. and PEPPER, W. F. (1967). Effect of non-protein nitrogen supplementation of low protein rations on laying hen performance with a note on essential amino acid requirements. Poult. Sci., 46, 1134.
   Web of Science ®Google Scholar
• OKUMURA, J. and TASAKI, I. (1968). Urinary nitrogen excretion in fowls fed acid or alkali. J. Nutr. 95: 148.
   PubMed Web of Science ®Google Scholar
• OLSEN, E. M., HILL, D. C. and BRANION, H. D. (1963). The effect of dietary diammonium citrate on glutamine and glutamic acid concentration in the blood plasma of chicks. Poult. Sci., 42, 1177.
   Web of Science ®Google Scholar
• PETERSON, D. W., BOND, D. C. and LANGBEHN, L. L. (1971). Growth responses of chicks to D and L isomers of glutamic and aspartic acids. Fed. Proc. 30, Abs. 232.
   Google Scholar
• RENNER, R. (1969). Effectiveness of various sources of non-essential nitorgen in promoting growth of chicks fed carbohydrate-containing and “carbohydrate-free” diets. J. Nutr., 98, 297.
   PubMed Web of Science ®Google Scholar
• RUSSELL, E. L., HALE, W. H. and HUBBERT, F. (1962). Evaluation of diammonium phosphate as a source of nitrogen for ruminants. J. Anim. Sci., 21, 523.
   Web of Science ®Google Scholar
• SCOTT, H. M., DEAN, W. F. and SMITH, R. E. (1963). Studies on the non-specific nitrogen requirement of chicks fed a crystalline amino acid diet. Poult. Sci., 42, 1305.
   Web of Science ®Google Scholar
• SCOTT, H. M., HUSTON, R. L. and KELLY, M. (1966). The effect of various supplements on the growth of chicks fed a crystalline amino acid diet. Poult. Sci., 45, 1123.
   Web of Science ®Google Scholar
• SCOTT, M. L., NESHEIM, M. C. and YOUNG, R. J. (1969). Nutrition of the Chicken, p. 73. Ithaca, New York: M. L. Scott & Essociates.
   Google Scholar
• SHANNON, D. W. F., BLAIR, R. and D'MELLO, J. P. F. (1969). Utilisation of ammonium nitrogen by the adult hen. Br. Poult. Sci., 10, 381.
   PubMed Web of Science ®Google Scholar
• SLINGER, S. J., PEPPER, W. F., HILL, D. C. and BRANION, H. D. (1952). Effect of penicillin on the growth and feed efficiency of chicks fed urea. Poult. Sci., 31: 1106.
   Web of Science ®Google Scholar
• SPRINSON, D. and RITTENBERG, D. (1949). The rate of utilization of ammonia for protein synthesis. J. Biol. Chem. 180, 707.
   PubMed Web of Science ®Google Scholar
• SUGAHARA, M. and ARIYOSHI, S. (1967a). The nutritional value of the individual nonessential amino acids as the nitrogen source in the chick nutrition. Agri. Biol. Chem. Tokyo, Japan, 31 (11): 1270.
   Google Scholar
• SUGAHARA, M. and ARIYOSHI, S. (1967b). The non-essentiality of Glycine and the Essentiality of L-Proline in the Chick Nutrition. Agri. Biol. Chem. Tokyo, Japan. 31 (1), 106.
   Google Scholar
• SUGAHARA, M. and ARIYOSHI, S. (1968). The role of dispensable amino acids for the maximum growth of chick. Agri. Biol. Chem. Tokyo, Japan 32(2), 153.
   Google Scholar
• SUGAHARA, M., MORIMOTO, T., KOBAYASHI, T. and ARIYOSHI, S. (1967). The Nutritional Value of D-Amino Acid in the Chick Nurtition. Agri. Biol. Chem., Tokyo, Japan, 31 (1). 77.
   Google Scholar
• SULLIVAN, T. W. and BIRD, H. R. (1957). Effect of quantity and source of dietary nitrogen on the utilisation of the hydroxy analogues of methionine and glycine by chicks. J. Nutr. 62. 143.
   PubMed Web of Science ®Google Scholar
• WATERHOUSE, H. N. and SCOTT, H. M. (1961a). Effect of Different Proteins and Protein Levels on the Glycine Need of the Chick Fed Purified Diets. Poult. Sci., 40: 1160.
   Web of Science ®Google Scholar
• WHITE, A., HANDLER, P. and SMITH, E. L. (1968). Principles of Biochemistry (4th Edition). New York: McGraw-Hill Book Co.
   Google Scholar
• WIXOM, R. L., PIPKIN, G. E. and DAY, P. L. (1955). Interrelationship of serine and glycine for chick growth. J. Nutr. 56, 409.
   PubMed Web of Science ®Google Scholar
• WIXOM, R. L., PIPKIN, G. E., WIKMAN, J. H. and DAY, P. I. (1958). Nutritional studie with glycine, aminoethanol and related compounds in the chick. J. Nutr., 64, 13.
   PubMed Web of Science ®Google Scholar
• YOUNG, R. J., GRIFFITH, M., DESAI, I. D. and SCOTT, M. L. (1965). The response of laying hens fed low protein diets to glutamic acid and diammonium citrate. Poult. Sci., 44, 1428.
   Web of Science ®Google Scholar