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Journal of Nutrition Vol. 85 No. 1 January 1965, pp. 113-116
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Partition of Excreted Nitrogen from Honey Bees Fed Various Proteins1,2,

J. B. McNally, W. F. McCaughey, L. N. Standifer and F. E. Todd

Department of Agricultural Biochemistry, The University of Arizona, and Bee Culture Laboratory, Entomology Research Division, Agricultural Research Service, U. S. Department of Agriculture, Tucson, Arizona

Newly emerged honey bees were fed diets containing 5% protein in the form of dandelion pollen, egg albumin, soybean meal hydrolysate or casein for 7 days, after which the recta were removed and the nitrogenous excretory products determined in the fecal material. Bees fed pollen showed the following as percentage of total nitrogen: uric acid, 62.06; creatine, 1.5; creatinine, 1.47; amino nitrogen, 6.11; urea, 0; and ammonia, 0. Amino nitrogen showed a direct relationship to diet adequacy: 1.36 and 6.11% for the negative controls and pollen-fed groups, respectively. No consistent pattern was noted for creatine or creatinine, except that both were lower for the pollen-fed groups than for the negative controls. When dietary protein sources were arranged in order of decreasing adequacy based on pharyngeal gland development, uric acid excretion varied inversely with diet adequacy; pollen, 48 (percentage of total nitrogen excreted); egg albumin, 62; soy hydrolysate, 62; casein, 96; and negative control, 96.

1 Arizona Agricultural Experiment Station Technical Paper no. 889.

2 Taken from a thesis submitted by J. B. McNally to the Graduate College, the University of Arizona as a requirement for the M.S. degree. Presented in part at the 1961 meeting of the Federated Societies for Experimental Biology and Medicine (Federation Proc., 20: 350e).

Manuscript received 8 May 1964.




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