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Changes in Fatty Acid Composition of Cockerel Testes Due to Age and Fat Deficiency^1,2,

Department of Poultry Science, University of Georgia, Athens, Georgia 30601

Chicks were fed a basal fat-deficient diet or a corn oil-supplemented basal diet for 22 weeks. Analyses of the total lipid of the testes by gas-liquid chromatography were conducted at intervals from 3 to 22 weeks. The docosatetraenoic acid content of the testes of birds fed the corn oil-supplemented diet started to increase at week 8 and reached a maximum after week 15. Spermatids were observed on histological examination of testes taken from 15-week-old birds. The testes of the birds fed the basal fat-free diet showed a high docosatrienoic acid content at 22 weeks of age at which time spermatids were visible histologically. The possibility of associating the lipid change with spermatogenesis is discussed.

² Supported in part by U. S. Public Health Service Research Grant no. 6338 and Research Career Award no. 18,411 from the National Institute of Arthritis and Metabolic Diseases.

Manuscript received 26 June 1969.